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Merge branch 'sched-core-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip

Browse Source 
Pull scheduler updates from Ingo Molnar:
 "The main changes in this (fairly busy) cycle were:

   - There was a class of scheduler bugs related to forgetting to update
     the rq-clock timestamp which can cause weird and hard to debug
     problems, so there's a new debug facility for this: which uncovered
     a whole lot of bugs which convinced us that we want to keep the
     debug facility.

     (Peter Zijlstra, Matt Fleming)

   - Various cputime related updates: eliminate cputime and use u64
     nanoseconds directly, simplify and improve the arch interfaces,
     implement delayed accounting more widely, etc. - (Frederic
     Weisbecker)

   - Move code around for better structure plus cleanups (Ingo Molnar)

   - Move IO schedule accounting deeper into the scheduler plus related
     changes to improve the situation (Tejun Heo)

   - ... plus a round of sched/rt and sched/deadline fixes, plus other
     fixes, updats and cleanups"

* 'sched-core-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: (85 commits)
  sched/core: Remove unlikely() annotation from sched_move_task()
  sched/autogroup: Rename auto_group.[ch] to autogroup.[ch]
  sched/topology: Split out scheduler topology code from core.c into topology.c
  sched/core: Remove unnecessary #include headers
  sched/rq_clock: Consolidate the ordering of the rq_clock methods
  delayacct: Include <uapi/linux/taskstats.h>
  sched/core: Clean up comments
  sched/rt: Show the 'sched_rr_timeslice' SCHED_RR timeslice tuning knob in milliseconds
  sched/clock: Add dummy clear_sched_clock_stable() stub function
  sched/cputime: Remove generic asm headers
  sched/cputime: Remove unused nsec_to_cputime()
  s390, sched/cputime: Remove unused cputime definitions
  powerpc, sched/cputime: Remove unused cputime definitions
  s390, sched/cputime: Make arch_cpu_idle_time() to return nsecs
  ia64, sched/cputime: Remove unused cputime definitions
  ia64: Convert vtime to use nsec units directly
  ia64, sched/cputime: Move the nsecs based cputime headers to the last arch using it
  sched/cputime: Remove jiffies based cputime
  sched/cputime, vtime: Return nsecs instead of cputime_t to account
  sched/cputime: Complete nsec conversion of tick based accounting
  ...
This commit is contained in:
Linus Torvalds 2017-02-20 12:52:55 -08:00
commit 828cad8ea0
124 changed files with 3142 additions and 3372 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

6
Documentation/scheduler/sched-deadline.txt
View File

@ -408,6 +408,11 @@ CONTENTS
* the new scheduling related syscalls that manipulate it, i.e.,
sched_setattr() and sched_getattr() are implemented.
For debugging purposes, the leftover runtime and absolute deadline of a
SCHED_DEADLINE task can be retrieved through /proc/<pid>/sched (entries
dl.runtime and dl.deadline, both values in ns). A programmatic way to
retrieve these values from production code is under discussion.
4.3 Default behavior
---------------------
@ -476,6 +481,7 @@ CONTENTS
Still missing:
- programmatic way to retrieve current runtime and absolute deadline
- refinements to deadline inheritance, especially regarding the possibility
of retaining bandwidth isolation among non-interacting tasks. This is
being studied from both theoretical and practical points of view, and

8
Documentation/scheduler/sched-rt-group.txt
View File

@ -158,11 +158,11 @@ as its prone to starvation without deadline scheduling.
Consider two sibling groups A and B; both have 50% bandwidth, but A's
period is twice the length of B's.
* group A: period=100000us, runtime=10000us
- this runs for 0.01s once every 0.1s
* group A: period=100000us, runtime=50000us
- this runs for 0.05s once every 0.1s
* group B: period= 50000us, runtime=10000us
- this runs for 0.01s twice every 0.1s (or once every 0.05 sec).
* group B: period= 50000us, runtime=25000us
- this runs for 0.025s twice every 0.1s (or once every 0.05 sec).
This means that currently a while (1) loop in A will run for the full period of
B and can starve B's tasks (assuming they are of lower priority) for a whole

1
arch/alpha/include/asm/Kbuild
View File

@ -1,7 +1,6 @@
generic-y += clkdev.h
generic-y += cputime.h
generic-y += exec.h
generic-y += export.h
generic-y += irq_work.h

10
arch/alpha/kernel/osf_sys.c
View File

@ -1145,7 +1145,7 @@ struct rusage32 {
SYSCALL_DEFINE2(osf_getrusage, int, who, struct rusage32 __user *, ru)
{
struct rusage32 r;
cputime_t utime, stime;
u64 utime, stime;
unsigned long utime_jiffies, stime_jiffies;
if (who != RUSAGE_SELF && who != RUSAGE_CHILDREN)
@ -1155,16 +1155,16 @@ SYSCALL_DEFINE2(osf_getrusage, int, who, struct rusage32 __user *, ru)
switch (who) {
case RUSAGE_SELF:
task_cputime(current, &utime, &stime);
utime_jiffies = cputime_to_jiffies(utime);
stime_jiffies = cputime_to_jiffies(stime);
utime_jiffies = nsecs_to_jiffies(utime);
stime_jiffies = nsecs_to_jiffies(stime);
jiffies_to_timeval32(utime_jiffies, &r.ru_utime);
jiffies_to_timeval32(stime_jiffies, &r.ru_stime);
r.ru_minflt = current->min_flt;
r.ru_majflt = current->maj_flt;
break;
case RUSAGE_CHILDREN:
utime_jiffies = cputime_to_jiffies(current->signal->cutime);
stime_jiffies = cputime_to_jiffies(current->signal->cstime);
utime_jiffies = nsecs_to_jiffies(current->signal->cutime);
stime_jiffies = nsecs_to_jiffies(current->signal->cstime);
jiffies_to_timeval32(utime_jiffies, &r.ru_utime);
jiffies_to_timeval32(stime_jiffies, &r.ru_stime);
r.ru_minflt = current->signal->cmin_flt;

1
arch/arc/include/asm/Kbuild
View File

@ -2,7 +2,6 @@ generic-y += auxvec.h
generic-y += bitsperlong.h
generic-y += bugs.h
generic-y += clkdev.h
generic-y += cputime.h
generic-y += device.h
generic-y += div64.h
generic-y += emergency-restart.h

1
arch/arm/include/asm/Kbuild
View File

@ -2,7 +2,6 @@
generic-y += bitsperlong.h
generic-y += clkdev.h
generic-y += cputime.h
generic-y += current.h
generic-y += early_ioremap.h
generic-y += emergency-restart.h

1
arch/arm64/include/asm/Kbuild
View File

@ -1,6 +1,5 @@
generic-y += bugs.h
generic-y += clkdev.h
generic-y += cputime.h
generic-y += delay.h
generic-y += div64.h
generic-y += dma.h

1
arch/avr32/include/asm/Kbuild
View File

@ -1,6 +1,5 @@
generic-y += clkdev.h
generic-y += cputime.h
generic-y += delay.h
generic-y += device.h
generic-y += div64.h

1
arch/blackfin/include/asm/Kbuild
View File

@ -2,7 +2,6 @@
generic-y += auxvec.h
generic-y += bitsperlong.h
generic-y += bugs.h
generic-y += cputime.h
generic-y += current.h
generic-y += device.h
generic-y += div64.h

1
arch/c6x/include/asm/Kbuild
View File

@ -5,7 +5,6 @@ generic-y += barrier.h
generic-y += bitsperlong.h
generic-y += bugs.h
generic-y += clkdev.h
generic-y += cputime.h
generic-y += current.h
generic-y += device.h
generic-y += div64.h

1
arch/cris/include/asm/Kbuild
View File

@ -4,7 +4,6 @@ generic-y += barrier.h
generic-y += bitsperlong.h
generic-y += clkdev.h
generic-y += cmpxchg.h
generic-y += cputime.h
generic-y += device.h
generic-y += div64.h
generic-y += errno.h

1
arch/frv/include/asm/Kbuild
View File

@ -1,6 +1,5 @@
generic-y += clkdev.h
generic-y += cputime.h
generic-y += exec.h
generic-y += irq_work.h
generic-y += mcs_spinlock.h

1
arch/h8300/include/asm/Kbuild
View File

@ -5,7 +5,6 @@ generic-y += bugs.h
generic-y += cacheflush.h
generic-y += checksum.h
generic-y += clkdev.h
generic-y += cputime.h
generic-y += current.h
generic-y += delay.h
generic-y += device.h

1
arch/hexagon/include/asm/Kbuild
View File

@ -6,7 +6,6 @@ generic-y += barrier.h
generic-y += bug.h
generic-y += bugs.h
generic-y += clkdev.h
generic-y += cputime.h
generic-y += current.h
generic-y += device.h
generic-y += div64.h

6
arch/ia64/include/asm/cputime.h
View File

@ -18,11 +18,7 @@
#ifndef __IA64_CPUTIME_H
#define __IA64_CPUTIME_H
#ifndef CONFIG_VIRT_CPU_ACCOUNTING_NATIVE
# include <asm-generic/cputime.h>
#else
# include <asm/processor.h>
# include <asm-generic/cputime_nsecs.h>
#ifdef CONFIG_VIRT_CPU_ACCOUNTING_NATIVE
extern void arch_vtime_task_switch(struct task_struct *tsk);
#endif /* CONFIG_VIRT_CPU_ACCOUNTING_NATIVE */

6
arch/ia64/include/asm/thread_info.h
View File

@ -27,6 +27,12 @@ struct thread_info {
mm_segment_t addr_limit; /* user-level address space limit */
int preempt_count; /* 0=premptable, <0=BUG; will also serve as bh-counter */
#ifdef CONFIG_VIRT_CPU_ACCOUNTING_NATIVE
__u64 utime;
__u64 stime;
__u64 gtime;
__u64 hardirq_time;
__u64 softirq_time;
__u64 idle_time;
__u64 ac_stamp;
__u64 ac_leave;
__u64 ac_stime;

4
arch/ia64/kernel/head.S
View File

@ -1031,7 +1031,7 @@ GLOBAL_ENTRY(ia64_native_sched_clock)
END(ia64_native_sched_clock)
#ifdef CONFIG_VIRT_CPU_ACCOUNTING_NATIVE
GLOBAL_ENTRY(cycle_to_cputime)
GLOBAL_ENTRY(cycle_to_nsec)
alloc r16=ar.pfs,1,0,0,0
addl r8=THIS_CPU(ia64_cpu_info) + IA64_CPUINFO_NSEC_PER_CYC_OFFSET,r0
;;
@ -1047,7 +1047,7 @@ GLOBAL_ENTRY(cycle_to_cputime)
;;
shrp r8=r9,r8,IA64_NSEC_PER_CYC_SHIFT
br.ret.sptk.many rp
END(cycle_to_cputime)
END(cycle_to_nsec)
#endif /* CONFIG_VIRT_CPU_ACCOUNTING_NATIVE */
#ifdef CONFIG_IA64_BRL_EMU

2
arch/ia64/kernel/setup.c
View File

@ -619,6 +619,8 @@ setup_arch (char **cmdline_p)
check_sal_cache_flush();
#endif
paging_init();
clear_sched_clock_stable();
}
/*

67
arch/ia64/kernel/time.c
View File

@ -21,6 +21,7 @@
#include <linux/timex.h>
#include <linux/timekeeper_internal.h>
#include <linux/platform_device.h>
#include <linux/cputime.h>
#include <asm/machvec.h>
#include <asm/delay.h>
@ -59,18 +60,43 @@ static struct clocksource *itc_clocksource;
#include <linux/kernel_stat.h>
extern cputime_t cycle_to_cputime(u64 cyc);
extern u64 cycle_to_nsec(u64 cyc);
void vtime_account_user(struct task_struct *tsk)
void vtime_flush(struct task_struct *tsk)
{
cputime_t delta_utime;
struct thread_info *ti = task_thread_info(tsk);
u64 delta;
if (ti->ac_utime) {
delta_utime = cycle_to_cputime(ti->ac_utime);
account_user_time(tsk, delta_utime);
ti->ac_utime = 0;
if (ti->utime)
account_user_time(tsk, cycle_to_nsec(ti->utime));
if (ti->gtime)
account_guest_time(tsk, cycle_to_nsec(ti->gtime));
if (ti->idle_time)
account_idle_time(cycle_to_nsec(ti->idle_time));
if (ti->stime) {
delta = cycle_to_nsec(ti->stime);
account_system_index_time(tsk, delta, CPUTIME_SYSTEM);
}
if (ti->hardirq_time) {
delta = cycle_to_nsec(ti->hardirq_time);
account_system_index_time(tsk, delta, CPUTIME_IRQ);
}
if (ti->softirq_time) {
delta = cycle_to_nsec(ti->softirq_time));
account_system_index_time(tsk, delta, CPUTIME_SOFTIRQ);
}
ti->utime = 0;
ti->gtime = 0;
ti->idle_time = 0;
ti->stime = 0;
ti->hardirq_time = 0;
ti->softirq_time = 0;
}
/*
@ -83,7 +109,7 @@ void arch_vtime_task_switch(struct task_struct *prev)
struct thread_info *pi = task_thread_info(prev);
struct thread_info *ni = task_thread_info(current);
pi->ac_stamp = ni->ac_stamp;
ni->ac_stamp = pi->ac_stamp;
ni->ac_stime = ni->ac_utime = 0;
}
@ -91,18 +117,15 @@ void arch_vtime_task_switch(struct task_struct *prev)
* Account time for a transition between system, hard irq or soft irq state.
* Note that this function is called with interrupts enabled.
*/
static cputime_t vtime_delta(struct task_struct *tsk)
static __u64 vtime_delta(struct task_struct *tsk)
{
struct thread_info *ti = task_thread_info(tsk);
cputime_t delta_stime;
__u64 now;
__u64 now, delta_stime;
WARN_ON_ONCE(!irqs_disabled());
now = ia64_get_itc();
delta_stime = cycle_to_cputime(ti->ac_stime + (now - ti->ac_stamp));
ti->ac_stime = 0;
delta_stime = now - ti->ac_stamp;
ti->ac_stamp = now;
return delta_stime;
@ -110,15 +133,25 @@ static cputime_t vtime_delta(struct task_struct *tsk)
void vtime_account_system(struct task_struct *tsk)
{
cputime_t delta = vtime_delta(tsk);
struct thread_info *ti = task_thread_info(tsk);
__u64 stime = vtime_delta(tsk);
account_system_time(tsk, 0, delta);
if ((tsk->flags & PF_VCPU) && !irq_count())
ti->gtime += stime;
else if (hardirq_count())
ti->hardirq_time += stime;
else if (in_serving_softirq())
ti->softirq_time += stime;
else
ti->stime += stime;
}
EXPORT_SYMBOL_GPL(vtime_account_system);
void vtime_account_idle(struct task_struct *tsk)
{
account_idle_time(vtime_delta(tsk));
struct thread_info *ti = task_thread_info(tsk);
ti->idle_time += vtime_delta(tsk);
}
#endif /* CONFIG_VIRT_CPU_ACCOUNTING_NATIVE */

1
arch/m32r/include/asm/Kbuild
View File

@ -1,6 +1,5 @@
generic-y += clkdev.h
generic-y += cputime.h
generic-y += exec.h
generic-y += irq_work.h
generic-y += kvm_para.h

1
arch/m68k/include/asm/Kbuild
View File

@ -1,7 +1,6 @@
generic-y += barrier.h
generic-y += bitsperlong.h
generic-y += clkdev.h
generic-y += cputime.h
generic-y += device.h
generic-y += emergency-restart.h
generic-y += errno.h

1
arch/metag/include/asm/Kbuild
View File

@ -2,7 +2,6 @@ generic-y += auxvec.h
generic-y += bitsperlong.h
generic-y += bugs.h
generic-y += clkdev.h
generic-y += cputime.h
generic-y += current.h
generic-y += device.h
generic-y += dma.h

1
arch/microblaze/include/asm/Kbuild
View File

@ -1,7 +1,6 @@
generic-y += barrier.h
generic-y += clkdev.h
generic-y += cputime.h
generic-y += device.h
generic-y += exec.h
generic-y += irq_work.h

1
arch/mips/include/asm/Kbuild
View File

@ -1,7 +1,6 @@
# MIPS headers
generic-(CONFIG_GENERIC_CSUM) += checksum.h
generic-y += clkdev.h
generic-y += cputime.h
generic-y += current.h
generic-y += dma-contiguous.h
generic-y += emergency-restart.h

12
arch/mips/kernel/binfmt_elfn32.c
View File

@ -99,15 +99,7 @@ jiffies_to_compat_timeval(unsigned long jiffies, struct compat_timeval *value)
#undef TASK_SIZE
#define TASK_SIZE TASK_SIZE32
#undef cputime_to_timeval
#define cputime_to_timeval cputime_to_compat_timeval
static __inline__ void
cputime_to_compat_timeval(const cputime_t cputime, struct compat_timeval *value)
{
unsigned long jiffies = cputime_to_jiffies(cputime);
value->tv_usec = (jiffies % HZ) * (1000000L / HZ);
value->tv_sec = jiffies / HZ;
}
#undef ns_to_timeval
#define ns_to_timeval ns_to_compat_timeval
#include "../../../fs/binfmt_elf.c"

12
arch/mips/kernel/binfmt_elfo32.c
View File

@ -102,15 +102,7 @@ jiffies_to_compat_timeval(unsigned long jiffies, struct compat_timeval *value)
#undef TASK_SIZE
#define TASK_SIZE TASK_SIZE32
#undef cputime_to_timeval
#define cputime_to_timeval cputime_to_compat_timeval
static __inline__ void
cputime_to_compat_timeval(const cputime_t cputime, struct compat_timeval *value)
{
unsigned long jiffies = cputime_to_jiffies(cputime);
value->tv_usec = (jiffies % HZ) * (1000000L / HZ);
value->tv_sec = jiffies / HZ;
}
#undef ns_to_timeval
#define ns_to_timeval ns_to_compat_timeval
#include "../../../fs/binfmt_elf.c"

1
arch/mn10300/include/asm/Kbuild
View File

@ -1,7 +1,6 @@
generic-y += barrier.h
generic-y += clkdev.h
generic-y += cputime.h
generic-y += exec.h
generic-y += irq_work.h
generic-y += mcs_spinlock.h

1
arch/nios2/include/asm/Kbuild
View File

@ -6,7 +6,6 @@ generic-y += bitsperlong.h
generic-y += bug.h
generic-y += bugs.h
generic-y += clkdev.h
generic-y += cputime.h
generic-y += current.h
generic-y += device.h
generic-y += div64.h

1
arch/openrisc/include/asm/Kbuild
View File

@ -12,7 +12,6 @@ generic-y += checksum.h
generic-y += clkdev.h
generic-y += cmpxchg-local.h
generic-y += cmpxchg.h
generic-y += cputime.h
generic-y += current.h
generic-y += device.h
generic-y += div64.h

1
arch/parisc/include/asm/Kbuild
View File

@ -2,7 +2,6 @@
generic-y += auxvec.h
generic-y += barrier.h
generic-y += clkdev.h
generic-y += cputime.h
generic-y += device.h
generic-y += div64.h
generic-y += emergency-restart.h

11
arch/parisc/kernel/binfmt_elf32.c
View File

@ -91,14 +91,7 @@ struct elf_prpsinfo32
current->thread.map_base = DEFAULT_MAP_BASE32; \
current->thread.task_size = DEFAULT_TASK_SIZE32 \
#undef cputime_to_timeval
#define cputime_to_timeval cputime_to_compat_timeval
static __inline__ void
cputime_to_compat_timeval(const cputime_t cputime, struct compat_timeval *value)
{
unsigned long jiffies = cputime_to_jiffies(cputime);
value->tv_usec = (jiffies % HZ) * (1000000L / HZ);
value->tv_sec = jiffies / HZ;
}
#undef ns_to_timeval
#define ns_to_timeval ns_to_compat_timeval
#include "../../../fs/binfmt_elf.c"

2
arch/parisc/kernel/setup.c
View File

@ -36,6 +36,7 @@
#undef PCI_DEBUG
#include <linux/proc_fs.h>
#include <linux/export.h>
#include <linux/sched.h>
#include <asm/processor.h>
#include <asm/sections.h>
@ -176,6 +177,7 @@ void __init setup_arch(char **cmdline_p)
conswitchp = &dummy_con; /* we use do_take_over_console() later ! */
#endif
clear_sched_clock_stable();
}
/*

14
arch/powerpc/include/asm/accounting.h
View File

@ -12,9 +12,17 @@
/* Stuff for accurate time accounting */
struct cpu_accounting_data {
unsigned long user_time; /* accumulated usermode TB ticks */
unsigned long system_time; /* accumulated system TB ticks */
unsigned long user_time_scaled; /* accumulated usermode SPURR ticks */
/* Accumulated cputime values to flush on ticks*/
unsigned long utime;
unsigned long stime;
unsigned long utime_scaled;
unsigned long stime_scaled;
unsigned long gtime;
unsigned long hardirq_time;
unsigned long softirq_time;
unsigned long steal_time;
unsigned long idle_time;
/* Internal counters */
unsigned long starttime; /* TB value snapshot */
unsigned long starttime_user; /* TB value on exit to usermode */
unsigned long startspurr; /* SPURR value snapshot */

177
arch/powerpc/include/asm/cputime.h
View File

@ -16,12 +16,7 @@
#ifndef __POWERPC_CPUTIME_H
#define __POWERPC_CPUTIME_H
#ifndef CONFIG_VIRT_CPU_ACCOUNTING_NATIVE
#include <asm-generic/cputime.h>
#ifdef __KERNEL__
static inline void setup_cputime_one_jiffy(void) { }
#endif
#else
#ifdef CONFIG_VIRT_CPU_ACCOUNTING_NATIVE
#include <linux/types.h>
#include <linux/time.h>
@ -36,65 +31,6 @@ typedef u64 __nocast cputime64_t;
#define cmpxchg_cputime(ptr, old, new) cmpxchg(ptr, old, new)
#ifdef __KERNEL__
/*
* One jiffy in timebase units computed during initialization
*/
extern cputime_t cputime_one_jiffy;
/*
* Convert cputime <-> jiffies
*/
extern u64 __cputime_jiffies_factor;
static inline unsigned long cputime_to_jiffies(const cputime_t ct)
{
return mulhdu((__force u64) ct, __cputime_jiffies_factor);
}
static inline cputime_t jiffies_to_cputime(const unsigned long jif)
{
u64 ct;
unsigned long sec;
/* have to be a little careful about overflow */
ct = jif % HZ;
sec = jif / HZ;
if (ct) {
ct *= tb_ticks_per_sec;
do_div(ct, HZ);
}
if (sec)
ct += (cputime_t) sec * tb_ticks_per_sec;
return (__force cputime_t) ct;
}
static inline void setup_cputime_one_jiffy(void)
{
cputime_one_jiffy = jiffies_to_cputime(1);
}
static inline cputime64_t jiffies64_to_cputime64(const u64 jif)
{
u64 ct;
u64 sec = jif;
/* have to be a little careful about overflow */
ct = do_div(sec, HZ);
if (ct) {
ct *= tb_ticks_per_sec;
do_div(ct, HZ);
}
if (sec)
ct += (u64) sec * tb_ticks_per_sec;
return (__force cputime64_t) ct;
}
static inline u64 cputime64_to_jiffies64(const cputime_t ct)
{
return mulhdu((__force u64) ct, __cputime_jiffies_factor);
}
/*
* Convert cputime <-> microseconds
*/
@ -105,117 +41,6 @@ static inline unsigned long cputime_to_usecs(const cputime_t ct)
return mulhdu((__force u64) ct, __cputime_usec_factor);
}
static inline cputime_t usecs_to_cputime(const unsigned long us)
{
u64 ct;
unsigned long sec;
/* have to be a little careful about overflow */
ct = us % 1000000;
sec = us / 1000000;
if (ct) {
ct *= tb_ticks_per_sec;
do_div(ct, 1000000);
}
if (sec)
ct += (cputime_t) sec * tb_ticks_per_sec;
return (__force cputime_t) ct;
}
#define usecs_to_cputime64(us) usecs_to_cputime(us)
/*
* Convert cputime <-> seconds
*/
extern u64 __cputime_sec_factor;
static inline unsigned long cputime_to_secs(const cputime_t ct)
{
return mulhdu((__force u64) ct, __cputime_sec_factor);
}
static inline cputime_t secs_to_cputime(const unsigned long sec)
{
return (__force cputime_t)((u64) sec * tb_ticks_per_sec);
}
/*
* Convert cputime <-> timespec
*/
static inline void cputime_to_timespec(const cputime_t ct, struct timespec *p)
{
u64 x = (__force u64) ct;
unsigned int frac;
frac = do_div(x, tb_ticks_per_sec);
p->tv_sec = x;
x = (u64) frac * 1000000000;
do_div(x, tb_ticks_per_sec);
p->tv_nsec = x;
}
static inline cputime_t timespec_to_cputime(const struct timespec *p)
{
u64 ct;
ct = (u64) p->tv_nsec * tb_ticks_per_sec;
do_div(ct, 1000000000);
return (__force cputime_t)(ct + (u64) p->tv_sec * tb_ticks_per_sec);
}
/*
* Convert cputime <-> timeval
*/
static inline void cputime_to_timeval(const cputime_t ct, struct timeval *p)
{
u64 x = (__force u64) ct;
unsigned int frac;
frac = do_div(x, tb_ticks_per_sec);
p->tv_sec = x;
x = (u64) frac * 1000000;
do_div(x, tb_ticks_per_sec);
p->tv_usec = x;
}
static inline cputime_t timeval_to_cputime(const struct timeval *p)
{
u64 ct;
ct = (u64) p->tv_usec * tb_ticks_per_sec;
do_div(ct, 1000000);
return (__force cputime_t)(ct + (u64) p->tv_sec * tb_ticks_per_sec);
}
/*
* Convert cputime <-> clock_t (units of 1/USER_HZ seconds)
*/
extern u64 __cputime_clockt_factor;
static inline unsigned long cputime_to_clock_t(const cputime_t ct)
{
return mulhdu((__force u64) ct, __cputime_clockt_factor);
}
static inline cputime_t clock_t_to_cputime(const unsigned long clk)
{
u64 ct;
unsigned long sec;
/* have to be a little careful about overflow */
ct = clk % USER_HZ;
sec = clk / USER_HZ;
if (ct) {
ct *= tb_ticks_per_sec;
do_div(ct, USER_HZ);
}
if (sec)
ct += (u64) sec * tb_ticks_per_sec;
return (__force cputime_t) ct;
}
#define cputime64_to_clock_t(ct) cputime_to_clock_t((cputime_t)(ct))
/*
* PPC64 uses PACA which is task independent for storing accounting data while
* PPC32 uses struct thread_info, therefore at task switch the accounting data

1
arch/powerpc/include/asm/paca.h
View File

@ -187,7 +187,6 @@ struct paca_struct {
/* Stuff for accurate time accounting */
struct cpu_accounting_data accounting;
u64 stolen_time; /* TB ticks taken by hypervisor */
u64 dtl_ridx; /* read index in dispatch log */
struct dtl_entry *dtl_curr; /* pointer corresponding to dtl_ridx */

8
arch/powerpc/kernel/asm-offsets.c
View File

@ -249,9 +249,9 @@ int main(void)
DEFINE(ACCOUNT_STARTTIME_USER,
offsetof(struct paca_struct, accounting.starttime_user));
DEFINE(ACCOUNT_USER_TIME,
offsetof(struct paca_struct, accounting.user_time));
offsetof(struct paca_struct, accounting.utime));
DEFINE(ACCOUNT_SYSTEM_TIME,
offsetof(struct paca_struct, accounting.system_time));
offsetof(struct paca_struct, accounting.stime));
DEFINE(PACA_TRAP_SAVE, offsetof(struct paca_struct, trap_save));
DEFINE(PACA_NAPSTATELOST, offsetof(struct paca_struct, nap_state_lost));
DEFINE(PACA_SPRG_VDSO, offsetof(struct paca_struct, sprg_vdso));
@ -262,9 +262,9 @@ int main(void)
DEFINE(ACCOUNT_STARTTIME_USER,
offsetof(struct thread_info, accounting.starttime_user));
DEFINE(ACCOUNT_USER_TIME,
offsetof(struct thread_info, accounting.user_time));
offsetof(struct thread_info, accounting.utime));
DEFINE(ACCOUNT_SYSTEM_TIME,
offsetof(struct thread_info, accounting.system_time));
offsetof(struct thread_info, accounting.stime));
#endif
#endif /* CONFIG_PPC64 */

161
arch/powerpc/kernel/time.c
View File

@ -57,6 +57,7 @@
#include <linux/clk-provider.h>
#include <linux/suspend.h>
#include <linux/rtc.h>
#include <linux/cputime.h>
#include <asm/trace.h>
#include <asm/io.h>
@ -72,7 +73,6 @@
#include <asm/smp.h>
#include <asm/vdso_datapage.h>
#include <asm/firmware.h>
#include <asm/cputime.h>
#include <asm/asm-prototypes.h>
/* powerpc clocksource/clockevent code */
@ -152,20 +152,11 @@ EXPORT_SYMBOL_GPL(ppc_tb_freq);
#ifdef CONFIG_VIRT_CPU_ACCOUNTING_NATIVE
/*
* Factors for converting from cputime_t (timebase ticks) to
* jiffies, microseconds, seconds, and clock_t (1/USER_HZ seconds).
* These are all stored as 0.64 fixed-point binary fractions.
* Factor for converting from cputime_t (timebase ticks) to
* microseconds. This is stored as 0.64 fixed-point binary fraction.
*/
u64 __cputime_jiffies_factor;
EXPORT_SYMBOL(__cputime_jiffies_factor);
u64 __cputime_usec_factor;
EXPORT_SYMBOL(__cputime_usec_factor);
u64 __cputime_sec_factor;
EXPORT_SYMBOL(__cputime_sec_factor);
u64 __cputime_clockt_factor;
EXPORT_SYMBOL(__cputime_clockt_factor);
cputime_t cputime_one_jiffy;
#ifdef CONFIG_PPC_SPLPAR
void (*dtl_consumer)(struct dtl_entry *, u64);
@ -181,14 +172,8 @@ static void calc_cputime_factors(void)
{
struct div_result res;
div128_by_32(HZ, 0, tb_ticks_per_sec, &res);
__cputime_jiffies_factor = res.result_low;
div128_by_32(1000000, 0, tb_ticks_per_sec, &res);
__cputime_usec_factor = res.result_low;
div128_by_32(1, 0, tb_ticks_per_sec, &res);
__cputime_sec_factor = res.result_low;
div128_by_32(USER_HZ, 0, tb_ticks_per_sec, &res);
__cputime_clockt_factor = res.result_low;
}
/*
@ -271,25 +256,19 @@ void accumulate_stolen_time(void)
sst = scan_dispatch_log(acct->starttime_user);
ust = scan_dispatch_log(acct->starttime);
acct->system_time -= sst;
acct->user_time -= ust;
local_paca->stolen_time += ust + sst;
acct->stime -= sst;
acct->utime -= ust;
acct->steal_time += ust + sst;
local_paca->soft_enabled = save_soft_enabled;
}
static inline u64 calculate_stolen_time(u64 stop_tb)
{
u64 stolen = 0;
if (get_paca()->dtl_ridx != be64_to_cpu(get_lppaca()->dtl_idx))
return scan_dispatch_log(stop_tb);
if (get_paca()->dtl_ridx != be64_to_cpu(get_lppaca()->dtl_idx)) {
stolen = scan_dispatch_log(stop_tb);
get_paca()->accounting.system_time -= stolen;
}
stolen += get_paca()->stolen_time;
get_paca()->stolen_time = 0;
return stolen;
return 0;
}
#else /* CONFIG_PPC_SPLPAR */
@ -305,28 +284,27 @@ static inline u64 calculate_stolen_time(u64 stop_tb)
* or soft irq state.
*/
static unsigned long vtime_delta(struct task_struct *tsk,
unsigned long *sys_scaled,
unsigned long *stolen)
unsigned long *stime_scaled,
unsigned long *steal_time)
{
unsigned long now, nowscaled, deltascaled;
unsigned long udelta, delta, user_scaled;
unsigned long stime;
unsigned long utime, utime_scaled;
struct cpu_accounting_data *acct = get_accounting(tsk);
WARN_ON_ONCE(!irqs_disabled());
now = mftb();
nowscaled = read_spurr(now);
acct->system_time += now - acct->starttime;
stime = now - acct->starttime;
acct->starttime = now;
deltascaled = nowscaled - acct->startspurr;
acct->startspurr = nowscaled;
*stolen = calculate_stolen_time(now);
*steal_time = calculate_stolen_time(now);
delta = acct->system_time;
acct->system_time = 0;
udelta = acct->user_time - acct->utime_sspurr;
acct->utime_sspurr = acct->user_time;
utime = acct->utime - acct->utime_sspurr;
acct->utime_sspurr = acct->utime;
/*
* Because we don't read the SPURR on every kernel entry/exit,
@ -338,62 +316,105 @@ static unsigned long vtime_delta(struct task_struct *tsk,
* the user ticks get saved up in paca->user_time_scaled to be
* used by account_process_tick.
*/
*sys_scaled = delta;
user_scaled = udelta;
if (deltascaled != delta + udelta) {
if (udelta) {
*sys_scaled = deltascaled * delta / (delta + udelta);
user_scaled = deltascaled - *sys_scaled;
*stime_scaled = stime;
utime_scaled = utime;
if (deltascaled != stime + utime) {
if (utime) {
*stime_scaled = deltascaled * stime / (stime + utime);
utime_scaled = deltascaled - *stime_scaled;
} else {
*sys_scaled = deltascaled;
*stime_scaled = deltascaled;
}
}
acct->user_time_scaled += user_scaled;
acct->utime_scaled += utime_scaled;
return delta;
return stime;
}
void vtime_account_system(struct task_struct *tsk)
{
unsigned long delta, sys_scaled, stolen;
unsigned long stime, stime_scaled, steal_time;
struct cpu_accounting_data *acct = get_accounting(tsk);
delta = vtime_delta(tsk, &sys_scaled, &stolen);
account_system_time(tsk, 0, delta);
tsk->stimescaled += sys_scaled;
if (stolen)
account_steal_time(stolen);
stime = vtime_delta(tsk, &stime_scaled, &steal_time);
stime -= min(stime, steal_time);
acct->steal_time += steal_time;
if ((tsk->flags & PF_VCPU) && !irq_count()) {
acct->gtime += stime;
acct->utime_scaled += stime_scaled;
} else {
if (hardirq_count())
acct->hardirq_time += stime;
else if (in_serving_softirq())
acct->softirq_time += stime;
else
acct->stime += stime;
acct->stime_scaled += stime_scaled;
}
}
EXPORT_SYMBOL_GPL(vtime_account_system);
void vtime_account_idle(struct task_struct *tsk)
{
unsigned long delta, sys_scaled, stolen;
unsigned long stime, stime_scaled, steal_time;
struct cpu_accounting_data *acct = get_accounting(tsk);
delta = vtime_delta(tsk, &sys_scaled, &stolen);
account_idle_time(delta + stolen);
stime = vtime_delta(tsk, &stime_scaled, &steal_time);
acct->idle_time += stime + steal_time;
}
/*
* Transfer the user time accumulated in the paca
* by the exception entry and exit code to the generic
* process user time records.
* Account the whole cputime accumulated in the paca
* Must be called with interrupts disabled.
* Assumes that vtime_account_system/idle() has been called
* recently (i.e. since the last entry from usermode) so that
* get_paca()->user_time_scaled is up to date.
*/
void vtime_account_user(struct task_struct *tsk)
void vtime_flush(struct task_struct *tsk)
{
cputime_t utime, utimescaled;
struct cpu_accounting_data *acct = get_accounting(tsk);
utime = acct->user_time;
utimescaled = acct->user_time_scaled;
acct->user_time = 0;
acct->user_time_scaled = 0;
if (acct->utime)
account_user_time(tsk, cputime_to_nsecs(acct->utime));
if (acct->utime_scaled)
tsk->utimescaled += cputime_to_nsecs(acct->utime_scaled);
if (acct->gtime)
account_guest_time(tsk, cputime_to_nsecs(acct->gtime));
if (acct->steal_time)
account_steal_time(cputime_to_nsecs(acct->steal_time));
if (acct->idle_time)
account_idle_time(cputime_to_nsecs(acct->idle_time));
if (acct->stime)
account_system_index_time(tsk, cputime_to_nsecs(acct->stime),
CPUTIME_SYSTEM);
if (acct->stime_scaled)
tsk->stimescaled += cputime_to_nsecs(acct->stime_scaled);
if (acct->hardirq_time)
account_system_index_time(tsk, cputime_to_nsecs(acct->hardirq_time),
CPUTIME_IRQ);
if (acct->softirq_time)
account_system_index_time(tsk, cputime_to_nsecs(acct->softirq_time),
CPUTIME_SOFTIRQ);
acct->utime = 0;
acct->utime_scaled = 0;
acct->utime_sspurr = 0;
account_user_time(tsk, utime);
tsk->utimescaled += utimescaled;
acct->gtime = 0;
acct->steal_time = 0;
acct->idle_time = 0;
acct->stime = 0;
acct->stime_scaled = 0;
acct->hardirq_time = 0;
acct->softirq_time = 0;
}
#ifdef CONFIG_PPC32
@ -407,8 +428,7 @@ void arch_vtime_task_switch(struct task_struct *prev)
struct cpu_accounting_data *acct = get_accounting(current);
acct->starttime = get_accounting(prev)->starttime;
acct->system_time = 0;
acct->user_time = 0;
acct->startspurr = get_accounting(prev)->startspurr;
}
#endif /* CONFIG_PPC32 */
@ -1018,7 +1038,6 @@ void __init time_init(void)
tb_ticks_per_sec = ppc_tb_freq;
tb_ticks_per_usec = ppc_tb_freq / 1000000;
calc_cputime_factors();
setup_cputime_one_jiffy();
/*
* Compute scale factor for sched_clock.

8
arch/powerpc/xmon/xmon.c
View File

@ -2287,14 +2287,14 @@ static void dump_one_paca(int cpu)
DUMP(p, subcore_sibling_mask, "x");
#endif
DUMP(p, accounting.user_time, "llx");
DUMP(p, accounting.system_time, "llx");
DUMP(p, accounting.user_time_scaled, "llx");
DUMP(p, accounting.utime, "llx");
DUMP(p, accounting.stime, "llx");
DUMP(p, accounting.utime_scaled, "llx");
DUMP(p, accounting.starttime, "llx");
DUMP(p, accounting.starttime_user, "llx");
DUMP(p, accounting.startspurr, "llx");
DUMP(p, accounting.utime_sspurr, "llx");
DUMP(p, stolen_time, "llx");
DUMP(p, accounting.steal_time, "llx");
#undef DUMP
catch_memory_errors = 0;

16
arch/s390/appldata/appldata_os.c
View File

@ -113,21 +113,21 @@ static void appldata_get_os_data(void *data)
j = 0;
for_each_online_cpu(i) {
os_data->os_cpu[j].per_cpu_user =
cputime_to_jiffies(kcpustat_cpu(i).cpustat[CPUTIME_USER]);
nsecs_to_jiffies(kcpustat_cpu(i).cpustat[CPUTIME_USER]);
os_data->os_cpu[j].per_cpu_nice =
cputime_to_jiffies(kcpustat_cpu(i).cpustat[CPUTIME_NICE]);
nsecs_to_jiffies(kcpustat_cpu(i).cpustat[CPUTIME_NICE]);
os_data->os_cpu[j].per_cpu_system =
cputime_to_jiffies(kcpustat_cpu(i).cpustat[CPUTIME_SYSTEM]);
nsecs_to_jiffies(kcpustat_cpu(i).cpustat[CPUTIME_SYSTEM]);
os_data->os_cpu[j].per_cpu_idle =
cputime_to_jiffies(kcpustat_cpu(i).cpustat[CPUTIME_IDLE]);
nsecs_to_jiffies(kcpustat_cpu(i).cpustat[CPUTIME_IDLE]);
os_data->os_cpu[j].per_cpu_irq =
cputime_to_jiffies(kcpustat_cpu(i).cpustat[CPUTIME_IRQ]);
nsecs_to_jiffies(kcpustat_cpu(i).cpustat[CPUTIME_IRQ]);
os_data->os_cpu[j].per_cpu_softirq =
cputime_to_jiffies(kcpustat_cpu(i).cpustat[CPUTIME_SOFTIRQ]);
nsecs_to_jiffies(kcpustat_cpu(i).cpustat[CPUTIME_SOFTIRQ]);
os_data->os_cpu[j].per_cpu_iowait =
cputime_to_jiffies(kcpustat_cpu(i).cpustat[CPUTIME_IOWAIT]);
nsecs_to_jiffies(kcpustat_cpu(i).cpustat[CPUTIME_IOWAIT]);
os_data->os_cpu[j].per_cpu_steal =
cputime_to_jiffies(kcpustat_cpu(i).cpustat[CPUTIME_STEAL]);
nsecs_to_jiffies(kcpustat_cpu(i).cpustat[CPUTIME_STEAL]);
os_data->os_cpu[j].cpu_id = i;
j++;
}

109
arch/s390/include/asm/cputime.h
View File

@ -25,33 +25,6 @@ static inline unsigned long __div(unsigned long long n, unsigned long base)
return n / base;
}
#define cputime_one_jiffy jiffies_to_cputime(1)
/*
* Convert cputime to jiffies and back.
*/
static inline unsigned long cputime_to_jiffies(const cputime_t cputime)
{
return __div((__force unsigned long long) cputime, CPUTIME_PER_SEC / HZ);
}
static inline cputime_t jiffies_to_cputime(const unsigned int jif)
{
return (__force cputime_t)(jif * (CPUTIME_PER_SEC / HZ));
}
static inline u64 cputime64_to_jiffies64(cputime64_t cputime)
{
unsigned long long jif = (__force unsigned long long) cputime;
do_div(jif, CPUTIME_PER_SEC / HZ);
return jif;
}
static inline cputime64_t jiffies64_to_cputime64(const u64 jif)
{
return (__force cputime64_t)(jif * (CPUTIME_PER_SEC / HZ));
}
/*
* Convert cputime to microseconds and back.
*/
@ -60,88 +33,8 @@ static inline unsigned int cputime_to_usecs(const cputime_t cputime)
return (__force unsigned long long) cputime >> 12;
}
static inline cputime_t usecs_to_cputime(const unsigned int m)
{
return (__force cputime_t)(m * CPUTIME_PER_USEC);
}
#define usecs_to_cputime64(m) usecs_to_cputime(m)
/*
* Convert cputime to milliseconds and back.
*/
static inline unsigned int cputime_to_secs(const cputime_t cputime)
{
return __div((__force unsigned long long) cputime, CPUTIME_PER_SEC / 2) >> 1;
}
static inline cputime_t secs_to_cputime(const unsigned int s)
{
return (__force cputime_t)(s * CPUTIME_PER_SEC);
}
/*
* Convert cputime to timespec and back.
*/
static inline cputime_t timespec_to_cputime(const struct timespec *value)
{
unsigned long long ret = value->tv_sec * CPUTIME_PER_SEC;
return (__force cputime_t)(ret + __div(value->tv_nsec * CPUTIME_PER_USEC, NSEC_PER_USEC));
}
static inline void cputime_to_timespec(const cputime_t cputime,
struct timespec *value)
{
unsigned long long __cputime = (__force unsigned long long) cputime;
value->tv_nsec = (__cputime % CPUTIME_PER_SEC) * NSEC_PER_USEC / CPUTIME_PER_USEC;
value->tv_sec = __cputime / CPUTIME_PER_SEC;
}
/*
* Convert cputime to timeval and back.
* Since cputime and timeval have the same resolution (microseconds)
* this is easy.
*/
static inline cputime_t timeval_to_cputime(const struct timeval *value)
{
unsigned long long ret = value->tv_sec * CPUTIME_PER_SEC;
return (__force cputime_t)(ret + value->tv_usec * CPUTIME_PER_USEC);
}
static inline void cputime_to_timeval(const cputime_t cputime,
struct timeval *value)
{
unsigned long long __cputime = (__force unsigned long long) cputime;
value->tv_usec = (__cputime % CPUTIME_PER_SEC) / CPUTIME_PER_USEC;
value->tv_sec = __cputime / CPUTIME_PER_SEC;
}
/*
* Convert cputime to clock and back.
*/
static inline clock_t cputime_to_clock_t(cputime_t cputime)
{
unsigned long long clock = (__force unsigned long long) cputime;
do_div(clock, CPUTIME_PER_SEC / USER_HZ);
return clock;
}
static inline cputime_t clock_t_to_cputime(unsigned long x)
{
return (__force cputime_t)(x * (CPUTIME_PER_SEC / USER_HZ));
}
/*
* Convert cputime64 to clock.
*/
static inline clock_t cputime64_to_clock_t(cputime64_t cputime)
{
unsigned long long clock = (__force unsigned long long) cputime;
do_div(clock, CPUTIME_PER_SEC / USER_HZ);
return clock;
}
cputime64_t arch_cpu_idle_time(int cpu);
u64 arch_cpu_idle_time(int cpu);
#define arch_idle_time(cpu) arch_cpu_idle_time(cpu)

65
arch/s390/include/asm/lowcore.h
View File

@ -85,53 +85,56 @@ struct lowcore {
__u64 mcck_enter_timer; /* 0x02c0 */
__u64 exit_timer; /* 0x02c8 */
__u64 user_timer; /* 0x02d0 */
__u64 system_timer; /* 0x02d8 */
__u64 steal_timer; /* 0x02e0 */
__u64 last_update_timer; /* 0x02e8 */
__u64 last_update_clock; /* 0x02f0 */
__u64 int_clock; /* 0x02f8 */
__u64 mcck_clock; /* 0x0300 */
__u64 clock_comparator; /* 0x0308 */
__u64 guest_timer; /* 0x02d8 */
__u64 system_timer; /* 0x02e0 */
__u64 hardirq_timer; /* 0x02e8 */
__u64 softirq_timer; /* 0x02f0 */
__u64 steal_timer; /* 0x02f8 */
__u64 last_update_timer; /* 0x0300 */
__u64 last_update_clock; /* 0x0308 */
__u64 int_clock; /* 0x0310 */
__u64 mcck_clock; /* 0x0318 */
__u64 clock_comparator; /* 0x0320 */
/* Current process. */
__u64 current_task; /* 0x0310 */
__u8 pad_0x318[0x320-0x318]; /* 0x0318 */
__u64 kernel_stack; /* 0x0320 */
__u64 current_task; /* 0x0328 */
__u8 pad_0x318[0x320-0x318]; /* 0x0330 */
__u64 kernel_stack; /* 0x0338 */
/* Interrupt, panic and restart stack. */
__u64 async_stack; /* 0x0328 */
__u64 panic_stack; /* 0x0330 */
__u64 restart_stack; /* 0x0338 */
__u64 async_stack; /* 0x0340 */
__u64 panic_stack; /* 0x0348 */
__u64 restart_stack; /* 0x0350 */
/* Restart function and parameter. */
__u64 restart_fn; /* 0x0340 */
__u64 restart_data; /* 0x0348 */
__u64 restart_source; /* 0x0350 */
__u64 restart_fn; /* 0x0358 */
__u64 restart_data; /* 0x0360 */
__u64 restart_source; /* 0x0368 */
/* Address space pointer. */
__u64 kernel_asce; /* 0x0358 */
__u64 user_asce; /* 0x0360 */
__u64 kernel_asce; /* 0x0370 */
__u64 user_asce; /* 0x0378 */
/*
* The lpp and current_pid fields form a
* 64-bit value that is set as program
* parameter with the LPP instruction.
*/
__u32 lpp; /* 0x0368 */
__u32 current_pid; /* 0x036c */
__u32 lpp; /* 0x0380 */
__u32 current_pid; /* 0x0384 */
/* SMP info area */
__u32 cpu_nr; /* 0x0370 */
__u32 softirq_pending; /* 0x0374 */
__u64 percpu_offset; /* 0x0378 */
__u64 vdso_per_cpu_data; /* 0x0380 */
__u64 machine_flags; /* 0x0388 */
__u32 preempt_count; /* 0x0390 */
__u8 pad_0x0394[0x0398-0x0394]; /* 0x0394 */
__u64 gmap; /* 0x0398 */
__u32 spinlock_lockval; /* 0x03a0 */
__u32 fpu_flags; /* 0x03a4 */
__u8 pad_0x03a8[0x0400-0x03a8]; /* 0x03a8 */
__u32 cpu_nr; /* 0x0388 */
__u32 softirq_pending; /* 0x038c */
__u64 percpu_offset; /* 0x0390 */
__u64 vdso_per_cpu_data; /* 0x0398 */
__u64 machine_flags; /* 0x03a0 */
__u32 preempt_count; /* 0x03a8 */
__u8 pad_0x03ac[0x03b0-0x03ac]; /* 0x03ac */
__u64 gmap; /* 0x03b0 */
__u32 spinlock_lockval; /* 0x03b8 */
__u32 fpu_flags; /* 0x03bc */
__u8 pad_0x03c0[0x0400-0x03c0]; /* 0x03c0 */
/* Per cpu primary space access list */
__u32 paste[16]; /* 0x0400 */

3
arch/s390/include/asm/processor.h
View File

@ -111,7 +111,10 @@ struct thread_struct {
unsigned int acrs[NUM_ACRS];
unsigned long ksp; /* kernel stack pointer */
unsigned long user_timer; /* task cputime in user space */
unsigned long guest_timer; /* task cputime in kvm guest */
unsigned long system_timer; /* task cputime in kernel space */
unsigned long hardirq_timer; /* task cputime in hardirq context */
unsigned long softirq_timer; /* task cputime in softirq context */
unsigned long sys_call_table; /* system call table address */
mm_segment_t mm_segment;
unsigned long gmap_addr; /* address of last gmap fault. */

9
arch/s390/kernel/idle.c
View File

@ -12,7 +12,7 @@
#include <linux/notifier.h>
#include <linux/init.h>
#include <linux/cpu.h>
#include <asm/cputime.h>
#include <linux/cputime.h>
#include <asm/nmi.h>
#include <asm/smp.h>
#include "entry.h"
@ -43,7 +43,7 @@ void enabled_wait(void)
idle->clock_idle_enter = idle->clock_idle_exit = 0ULL;
idle->idle_time += idle_time;
idle->idle_count++;
account_idle_time(idle_time);
account_idle_time(cputime_to_nsecs(idle_time));
write_seqcount_end(&idle->seqcount);
}
NOKPROBE_SYMBOL(enabled_wait);
@ -84,7 +84,7 @@ static ssize_t show_idle_time(struct device *dev,
}
DEVICE_ATTR(idle_time_us, 0444, show_idle_time, NULL);
cputime64_t arch_cpu_idle_time(int cpu)
u64 arch_cpu_idle_time(int cpu)
{
struct s390_idle_data *idle = &per_cpu(s390_idle, cpu);
unsigned long long now, idle_enter, idle_exit;
@ -96,7 +96,8 @@ cputime64_t arch_cpu_idle_time(int cpu)
idle_enter = ACCESS_ONCE(idle->clock_idle_enter);
idle_exit = ACCESS_ONCE(idle->clock_idle_exit);
} while (read_seqcount_retry(&idle->seqcount, seq));
return idle_enter ? ((idle_exit ?: now) - idle_enter) : 0;
return cputime_to_nsecs(idle_enter ? ((idle_exit ?: now) - idle_enter) : 0);
}
void arch_cpu_idle_enter(void)

138
arch/s390/kernel/vtime.c
View File

@ -6,13 +6,13 @@
*/
#include <linux/kernel_stat.h>
#include <linux/cputime.h>
#include <linux/export.h>
#include <linux/kernel.h>
#include <linux/timex.h>
#include <linux/types.h>
#include <linux/time.h>
#include <asm/cputime.h>
#include <asm/vtimer.h>
#include <asm/vtime.h>
#include <asm/cpu_mf.h>
@ -90,14 +90,41 @@ static void update_mt_scaling(void)
__this_cpu_write(mt_scaling_jiffies, jiffies_64);
}
static inline u64 update_tsk_timer(unsigned long *tsk_vtime, u64 new)
{
u64 delta;
delta = new - *tsk_vtime;
*tsk_vtime = new;
return delta;
}
static inline u64 scale_vtime(u64 vtime)
{
u64 mult = __this_cpu_read(mt_scaling_mult);
u64 div = __this_cpu_read(mt_scaling_div);
if (smp_cpu_mtid)
return vtime * mult / div;
return vtime;
}
static void account_system_index_scaled(struct task_struct *p,
cputime_t cputime, cputime_t scaled,
enum cpu_usage_stat index)
{
p->stimescaled += cputime_to_nsecs(scaled);
account_system_index_time(p, cputime_to_nsecs(cputime), index);
}
/*
* Update process times based on virtual cpu times stored by entry.S
* to the lowcore fields user_timer, system_timer & steal_clock.
*/
static int do_account_vtime(struct task_struct *tsk)
{
u64 timer, clock, user, system, steal;
u64 user_scaled, system_scaled;
u64 timer, clock, user, guest, system, hardirq, softirq, steal;
timer = S390_lowcore.last_update_timer;
clock = S390_lowcore.last_update_clock;
@ -110,53 +137,76 @@ static int do_account_vtime(struct task_struct *tsk)
#endif
: "=m" (S390_lowcore.last_update_timer),
"=m" (S390_lowcore.last_update_clock));
S390_lowcore.system_timer += timer - S390_lowcore.last_update_timer;
S390_lowcore.steal_timer += S390_lowcore.last_update_clock - clock;
clock = S390_lowcore.last_update_clock - clock;
timer -= S390_lowcore.last_update_timer;
if (hardirq_count())
S390_lowcore.hardirq_timer += timer;
else
S390_lowcore.system_timer += timer;
/* Update MT utilization calculation */
if (smp_cpu_mtid &&
time_after64(jiffies_64, this_cpu_read(mt_scaling_jiffies)))
update_mt_scaling();
user = S390_lowcore.user_timer - tsk->thread.user_timer;
S390_lowcore.steal_timer -= user;
tsk->thread.user_timer = S390_lowcore.user_timer;
/* Calculate cputime delta */
user = update_tsk_timer(&tsk->thread.user_timer,
READ_ONCE(S390_lowcore.user_timer));
guest = update_tsk_timer(&tsk->thread.guest_timer,
READ_ONCE(S390_lowcore.guest_timer));
system = update_tsk_timer(&tsk->thread.system_timer,
READ_ONCE(S390_lowcore.system_timer));
hardirq = update_tsk_timer(&tsk->thread.hardirq_timer,
READ_ONCE(S390_lowcore.hardirq_timer));
softirq = update_tsk_timer(&tsk->thread.softirq_timer,
READ_ONCE(S390_lowcore.softirq_timer));
S390_lowcore.steal_timer +=
clock - user - guest - system - hardirq - softirq;
system = S390_lowcore.system_timer - tsk->thread.system_timer;
S390_lowcore.steal_timer -= system;
tsk->thread.system_timer = S390_lowcore.system_timer;
user_scaled = user;
system_scaled = system;
/* Do MT utilization scaling */
if (smp_cpu_mtid) {
u64 mult = __this_cpu_read(mt_scaling_mult);
u64 div = __this_cpu_read(mt_scaling_div);
user_scaled = (user_scaled * mult) / div;
system_scaled = (system_scaled * mult) / div;
/* Push account value */
if (user) {
account_user_time(tsk, cputime_to_nsecs(user));
tsk->utimescaled += cputime_to_nsecs(scale_vtime(user));
}
account_user_time(tsk, user);
tsk->utimescaled += user_scaled;
account_system_time(tsk, 0, system);
tsk->stimescaled += system_scaled;
if (guest) {
account_guest_time(tsk, cputime_to_nsecs(guest));
tsk->utimescaled += cputime_to_nsecs(scale_vtime(guest));
}
if (system)
account_system_index_scaled(tsk, system, scale_vtime(system),
CPUTIME_SYSTEM);
if (hardirq)
account_system_index_scaled(tsk, hardirq, scale_vtime(hardirq),
CPUTIME_IRQ);
if (softirq)
account_system_index_scaled(tsk, softirq, scale_vtime(softirq),
CPUTIME_SOFTIRQ);
steal = S390_lowcore.steal_timer;
if ((s64) steal > 0) {
S390_lowcore.steal_timer = 0;
account_steal_time(steal);
account_steal_time(cputime_to_nsecs(steal));
}
return virt_timer_forward(user + system);
return virt_timer_forward(user + guest + system + hardirq + softirq);
}
void vtime_task_switch(struct task_struct *prev)
{
do_account_vtime(prev);
prev->thread.user_timer = S390_lowcore.user_timer;
prev->thread.guest_timer = S390_lowcore.guest_timer;
prev->thread.system_timer = S390_lowcore.system_timer;
prev->thread.hardirq_timer = S390_lowcore.hardirq_timer;
prev->thread.softirq_timer = S390_lowcore.softirq_timer;
S390_lowcore.user_timer = current->thread.user_timer;
S390_lowcore.guest_timer = current->thread.guest_timer;
S390_lowcore.system_timer = current->thread.system_timer;
S390_lowcore.hardirq_timer = current->thread.hardirq_timer;
S390_lowcore.softirq_timer = current->thread.softirq_timer;
}
/*
@ -164,7 +214,7 @@ void vtime_task_switch(struct task_struct *prev)
* accounting system time in order to correctly compute
* the stolen time accounting.
*/
void vtime_account_user(struct task_struct *tsk)
void vtime_flush(struct task_struct *tsk)
{
if (do_account_vtime(tsk))
virt_timer_expire();
@ -176,32 +226,22 @@ void vtime_account_user(struct task_struct *tsk)
*/
void vtime_account_irq_enter(struct task_struct *tsk)
{
u64 timer, system, system_scaled;
u64 timer;
timer = S390_lowcore.last_update_timer;
S390_lowcore.last_update_timer = get_vtimer();
S390_lowcore.system_timer += timer - S390_lowcore.last_update_timer;
timer -= S390_lowcore.last_update_timer;
/* Update MT utilization calculation */
if (smp_cpu_mtid &&
time_after64(jiffies_64, this_cpu_read(mt_scaling_jiffies)))
update_mt_scaling();
if ((tsk->flags & PF_VCPU) && (irq_count() == 0))
S390_lowcore.guest_timer += timer;
else if (hardirq_count())
S390_lowcore.hardirq_timer += timer;
else if (in_serving_softirq())
S390_lowcore.softirq_timer += timer;
else
S390_lowcore.system_timer += timer;
system = S390_lowcore.system_timer - tsk->thread.system_timer;
S390_lowcore.steal_timer -= system;
tsk->thread.system_timer = S390_lowcore.system_timer;
system_scaled = system;
/* Do MT utilization scaling */
if (smp_cpu_mtid) {
u64 mult = __this_cpu_read(mt_scaling_mult);
u64 div = __this_cpu_read(mt_scaling_div);
system_scaled = (system_scaled * mult) / div;
}
account_system_time(tsk, 0, system);
tsk->stimescaled += system_scaled;
virt_timer_forward(system);
virt_timer_forward(timer);
}
EXPORT_SYMBOL_GPL(vtime_account_irq_enter);

1
arch/score/include/asm/Kbuild
View File

@ -4,7 +4,6 @@ header-y +=
generic-y += barrier.h
generic-y += clkdev.h
generic-y += cputime.h
generic-y += irq_work.h
generic-y += mcs_spinlock.h
generic-y += mm-arch-hooks.h

1
arch/sh/include/asm/Kbuild
View File

@ -1,7 +1,6 @@
generic-y += bitsperlong.h
generic-y += clkdev.h
generic-y += cputime.h
generic-y += current.h
generic-y += delay.h
generic-y += div64.h

1
arch/sparc/include/asm/Kbuild
View File

@ -2,7 +2,6 @@
generic-y += clkdev.h
generic-y += cputime.h
generic-y += div64.h
generic-y += emergency-restart.h
generic-y += exec.h

1
arch/tile/include/asm/Kbuild
View File

@ -4,7 +4,6 @@ header-y += ../arch/
generic-y += bug.h
generic-y += bugs.h
generic-y += clkdev.h
generic-y += cputime.h
generic-y += emergency-restart.h
generic-y += errno.h
generic-y += exec.h

1
arch/um/include/asm/Kbuild
View File

@ -1,7 +1,6 @@
generic-y += barrier.h
generic-y += bug.h
generic-y += clkdev.h
generic-y += cputime.h
generic-y += current.h
generic-y += delay.h
generic-y += device.h

1
arch/unicore32/include/asm/Kbuild
View File

@ -4,7 +4,6 @@ generic-y += auxvec.h
generic-y += bitsperlong.h
generic-y += bugs.h
generic-y += clkdev.h
generic-y += cputime.h
generic-y += current.h
generic-y += device.h
generic-y += div64.h

1
arch/x86/include/asm/Kbuild
View File

@ -7,7 +7,6 @@ generated-y += unistd_64_x32.h
generated-y += xen-hypercalls.h
generic-y += clkdev.h
generic-y += cputime.h
generic-y += dma-contiguous.h
generic-y += early_ioremap.h
generic-y += mcs_spinlock.h

6
arch/x86/kernel/apm_32.c
View File

@ -905,8 +905,8 @@ static int apm_cpu_idle(struct cpuidle_device *dev,
{
static int use_apm_idle; /* = 0 */
static unsigned int last_jiffies; /* = 0 */
static unsigned int last_stime; /* = 0 */
cputime_t stime, utime;
static u64 last_stime; /* = 0 */
u64 stime, utime;
int apm_idle_done = 0;
unsigned int jiffies_since_last_check = jiffies - last_jiffies;
@ -919,7 +919,7 @@ static int apm_cpu_idle(struct cpuidle_device *dev,
} else if (jiffies_since_last_check > idle_period) {
unsigned int idle_percentage;
idle_percentage = cputime_to_jiffies(stime - last_stime);
idle_percentage = nsecs_to_jiffies(stime - last_stime);
idle_percentage *= 100;
idle_percentage /= jiffies_since_last_check;
use_apm_idle = (idle_percentage > idle_threshold);

6
arch/x86/kernel/cpu/amd.c
View File

@ -555,8 +555,10 @@ static void early_init_amd(struct cpuinfo_x86 *c)
if (c->x86_power & (1 << 8)) {
set_cpu_cap(c, X86_FEATURE_CONSTANT_TSC);
set_cpu_cap(c, X86_FEATURE_NONSTOP_TSC);
if (!check_tsc_unstable())
set_sched_clock_stable();
if (check_tsc_unstable())
clear_sched_clock_stable();
} else {
clear_sched_clock_stable();
}
/* Bit 12 of 8000_0007 edx is accumulated power mechanism. */

6
arch/x86/kernel/cpu/centaur.c
View File

@ -1,5 +1,5 @@
#include <linux/bitops.h>
#include <linux/kernel.h>
#include <linux/sched.h>
#include <asm/cpufeature.h>
#include <asm/e820.h>
@ -104,6 +104,8 @@ static void early_init_centaur(struct cpuinfo_x86 *c)
#ifdef CONFIG_X86_64
set_cpu_cap(c, X86_FEATURE_SYSENTER32);
#endif
clear_sched_clock_stable();
}
static void init_centaur(struct cpuinfo_x86 *c)

3
arch/x86/kernel/cpu/common.c
View File

@ -83,6 +83,7 @@ static void default_init(struct cpuinfo_x86 *c)
strcpy(c->x86_model_id, "386");
}
#endif
clear_sched_clock_stable();
}
static const struct cpu_dev default_cpu = {
@ -1056,6 +1057,8 @@ static void identify_cpu(struct cpuinfo_x86 *c)
*/
if (this_cpu->c_init)
this_cpu->c_init(c);
else
clear_sched_clock_stable();
/* Disable the PN if appropriate */
squash_the_stupid_serial_number(c);

2
arch/x86/kernel/cpu/cyrix.c
View File

@ -9,6 +9,7 @@
#include <asm/pci-direct.h>
#include <asm/tsc.h>
#include <asm/cpufeature.h>
#include <linux/sched.h>
#include "cpu.h"
@ -183,6 +184,7 @@ static void early_init_cyrix(struct cpuinfo_x86 *c)
set_cpu_cap(c, X86_FEATURE_CYRIX_ARR);
break;
}
clear_sched_clock_stable();
}
static void init_cyrix(struct cpuinfo_x86 *c)

6
arch/x86/kernel/cpu/intel.c
View File

@ -119,8 +119,10 @@ static void early_init_intel(struct cpuinfo_x86 *c)
if (c->x86_power & (1 << 8)) {
set_cpu_cap(c, X86_FEATURE_CONSTANT_TSC);
set_cpu_cap(c, X86_FEATURE_NONSTOP_TSC);
if (!check_tsc_unstable())
set_sched_clock_stable();
if (check_tsc_unstable())
clear_sched_clock_stable();
} else {
clear_sched_clock_stable();
}
/* Penwell and Cloverview have the TSC which doesn't sleep on S3 */

3
arch/x86/kernel/cpu/transmeta.c
View File

@ -1,4 +1,5 @@
#include <linux/kernel.h>
#include <linux/sched.h>
#include <linux/mm.h>
#include <asm/cpufeature.h>
#include <asm/msr.h>
@ -14,6 +15,8 @@ static void early_init_transmeta(struct cpuinfo_x86 *c)
if (xlvl >= 0x80860001)
c->x86_capability[CPUID_8086_0001_EDX] = cpuid_edx(0x80860001);
}
clear_sched_clock_stable();
}
static void init_transmeta(struct cpuinfo_x86 *c)

6
arch/x86/kernel/itmt.c
View File

@ -132,10 +132,8 @@ int sched_set_itmt_support(void)
sysctl_sched_itmt_enabled = 1;
if (sysctl_sched_itmt_enabled) {
x86_topology_update = true;
rebuild_sched_domains();
}
x86_topology_update = true;
rebuild_sched_domains();
mutex_unlock(&itmt_update_mutex);

2
arch/x86/kernel/kvmclock.c
View File

@ -107,12 +107,12 @@ static inline void kvm_sched_clock_init(bool stable)
{
if (!stable) {
pv_time_ops.sched_clock = kvm_clock_read;
clear_sched_clock_stable();
return;
}
kvm_sched_clock_offset = kvm_clock_read();
pv_time_ops.sched_clock = kvm_sched_clock_read;
set_sched_clock_stable();
printk(KERN_INFO "kvm-clock: using sched offset of %llu cycles\n",
kvm_sched_clock_offset);

11
arch/x86/kernel/tsc.c
View File

@ -1107,6 +1107,16 @@ static u64 read_tsc(struct clocksource *cs)
return (u64)rdtsc_ordered();
}
static void tsc_cs_mark_unstable(struct clocksource *cs)
{
if (tsc_unstable)
return;
tsc_unstable = 1;
clear_sched_clock_stable();
disable_sched_clock_irqtime();
pr_info("Marking TSC unstable due to clocksource watchdog\n");
}
/*
* .mask MUST be CLOCKSOURCE_MASK(64). See comment above read_tsc()
*/
@ -1119,6 +1129,7 @@ static struct clocksource clocksource_tsc = {
CLOCK_SOURCE_MUST_VERIFY,
.archdata = { .vclock_mode = VCLOCK_TSC },
.resume = tsc_resume,
.mark_unstable = tsc_cs_mark_unstable,
};
void mark_tsc_unstable(char *reason)

5
arch/x86/kvm/hyperv.c
View File

@ -964,10 +964,11 @@ static int kvm_hv_set_msr_pw(struct kvm_vcpu *vcpu, u32 msr, u64 data,
/* Calculate cpu time spent by current task in 100ns units */
static u64 current_task_runtime_100ns(void)
{
cputime_t utime, stime;
u64 utime, stime;
task_cputime_adjusted(current, &utime, &stime);
return div_u64(cputime_to_nsecs(utime + stime), 100);
return div_u64(utime + stime, 100);
}
static int kvm_hv_set_msr(struct kvm_vcpu *vcpu, u32 msr, u64 data, bool host)

1
arch/xtensa/include/asm/Kbuild
View File

@ -1,7 +1,6 @@
generic-y += bitsperlong.h
generic-y += bug.h
generic-y += clkdev.h
generic-y += cputime.h
generic-y += div64.h
generic-y += dma-contiguous.h
generic-y += emergency-restart.h

6
drivers/cpufreq/cpufreq.c
View File

@ -132,7 +132,7 @@ static inline u64 get_cpu_idle_time_jiffy(unsigned int cpu, u64 *wall)
u64 cur_wall_time;
u64 busy_time;
cur_wall_time = jiffies64_to_cputime64(get_jiffies_64());
cur_wall_time = jiffies64_to_nsecs(get_jiffies_64());
busy_time = kcpustat_cpu(cpu).cpustat[CPUTIME_USER];
busy_time += kcpustat_cpu(cpu).cpustat[CPUTIME_SYSTEM];
@ -143,9 +143,9 @@ static inline u64 get_cpu_idle_time_jiffy(unsigned int cpu, u64 *wall)
idle_time = cur_wall_time - busy_time;
if (wall)
*wall = cputime_to_usecs(cur_wall_time);
*wall = div_u64(cur_wall_time, NSEC_PER_USEC);
return cputime_to_usecs(idle_time);
return div_u64(idle_time, NSEC_PER_USEC);
}
u64 get_cpu_idle_time(unsigned int cpu, u64 *wall, int io_busy)

2
drivers/cpufreq/cpufreq_governor.c
View File

@ -152,7 +152,7 @@ unsigned int dbs_update(struct cpufreq_policy *policy)
if (ignore_nice) {
u64 cur_nice = kcpustat_cpu(j).cpustat[CPUTIME_NICE];
idle_time += cputime_to_usecs(cur_nice - j_cdbs->prev_cpu_nice);
idle_time += div_u64(cur_nice - j_cdbs->prev_cpu_nice, NSEC_PER_USEC);
j_cdbs->prev_cpu_nice = cur_nice;
}

1
drivers/cpufreq/cpufreq_stats.c
View File

@ -13,7 +13,6 @@
#include <linux/cpufreq.h>
#include <linux/module.h>
#include <linux/slab.h>
#include <linux/cputime.h>
static DEFINE_SPINLOCK(cpufreq_stats_lock);

4
drivers/isdn/mISDN/stack.c
View File

@ -203,7 +203,7 @@ mISDNStackd(void *data)
{
struct mISDNstack *st = data;
#ifdef MISDN_MSG_STATS
cputime_t utime, stime;
u64 utime, stime;
#endif
int err = 0;
@ -308,7 +308,7 @@ mISDNStackd(void *data)
st->stopped_cnt);
task_cputime(st->thread, &utime, &stime);
printk(KERN_DEBUG
"mISDNStackd daemon for %s utime(%ld) stime(%ld)\n",
"mISDNStackd daemon for %s utime(%llu) stime(%llu)\n",
dev_name(&st->dev->dev), utime, stime);
printk(KERN_DEBUG
"mISDNStackd daemon for %s nvcsw(%ld) nivcsw(%ld)\n",

28
drivers/macintosh/rack-meter.c
View File

@ -52,8 +52,8 @@ struct rackmeter_dma {
struct rackmeter_cpu {
struct delayed_work sniffer;
struct rackmeter *rm;
cputime64_t prev_wall;
cputime64_t prev_idle;
u64 prev_wall;
u64 prev_idle;
int zero;
} ____cacheline_aligned;
@ -81,7 +81,7 @@ static int rackmeter_ignore_nice;
/* This is copied from cpufreq_ondemand, maybe we should put it in
* a common header somewhere
*/
static inline cputime64_t get_cpu_idle_time(unsigned int cpu)
static inline u64 get_cpu_idle_time(unsigned int cpu)
{
u64 retval;
@ -217,23 +217,23 @@ static void rackmeter_do_timer(struct work_struct *work)
container_of(work, struct rackmeter_cpu, sniffer.work);
struct rackmeter *rm = rcpu->rm;
unsigned int cpu = smp_processor_id();
cputime64_t cur_jiffies, total_idle_ticks;
unsigned int total_ticks, idle_ticks;
u64 cur_nsecs, total_idle_nsecs;
u64 total_nsecs, idle_nsecs;
int i, offset, load, cumm, pause;
cur_jiffies = jiffies64_to_cputime64(get_jiffies_64());
total_ticks = (unsigned int) (cur_jiffies - rcpu->prev_wall);
rcpu->prev_wall = cur_jiffies;
cur_nsecs = jiffies64_to_nsecs(get_jiffies_64());
total_nsecs = cur_nsecs - rcpu->prev_wall;
rcpu->prev_wall = cur_nsecs;
total_idle_ticks = get_cpu_idle_time(cpu);
idle_ticks = (unsigned int) (total_idle_ticks - rcpu->prev_idle);
idle_ticks = min(idle_ticks, total_ticks);
rcpu->prev_idle = total_idle_ticks;
total_idle_nsecs = get_cpu_idle_time(cpu);
idle_nsecs = total_idle_nsecs - rcpu->prev_idle;
idle_nsecs = min(idle_nsecs, total_nsecs);
rcpu->prev_idle = total_idle_nsecs;
/* We do a very dumb calculation to update the LEDs for now,
* we'll do better once we have actual PWM implemented
*/
load = (9 * (total_ticks - idle_ticks)) / total_ticks;
load = div64_u64(9 * (total_nsecs - idle_nsecs), total_nsecs);
offset = cpu << 3;
cumm = 0;
@ -278,7 +278,7 @@ static void rackmeter_init_cpu_sniffer(struct rackmeter *rm)
continue;
rcpu = &rm->cpu[cpu];
rcpu->prev_idle = get_cpu_idle_time(cpu);
rcpu->prev_wall = jiffies64_to_cputime64(get_jiffies_64());
rcpu->prev_wall = jiffies64_to_nsecs(get_jiffies_64());
schedule_delayed_work_on(cpu, &rm->cpu[cpu].sniffer,
msecs_to_jiffies(CPU_SAMPLING_RATE));
}

15
fs/binfmt_elf.c
View File

@ -1428,17 +1428,18 @@ static void fill_prstatus(struct elf_prstatus *prstatus,
* group-wide total, not its individual thread total.
*/
thread_group_cputime(p, &cputime);
cputime_to_timeval(cputime.utime, &prstatus->pr_utime);
cputime_to_timeval(cputime.stime, &prstatus->pr_stime);
prstatus->pr_utime = ns_to_timeval(cputime.utime);
prstatus->pr_stime = ns_to_timeval(cputime.stime);
} else {
cputime_t utime, stime;
u64 utime, stime;
task_cputime(p, &utime, &stime);
cputime_to_timeval(utime, &prstatus->pr_utime);
cputime_to_timeval(stime, &prstatus->pr_stime);
prstatus->pr_utime = ns_to_timeval(utime);
prstatus->pr_stime = ns_to_timeval(stime);
}
cputime_to_timeval(p->signal->cutime, &prstatus->pr_cutime);
cputime_to_timeval(p->signal->cstime, &prstatus->pr_cstime);
prstatus->pr_cutime = ns_to_timeval(p->signal->cutime);
prstatus->pr_cstime = ns_to_timeval(p->signal->cstime);
}
static int fill_psinfo(struct elf_prpsinfo *psinfo, struct task_struct *p,

14
fs/binfmt_elf_fdpic.c
View File

@ -1349,17 +1349,17 @@ static void fill_prstatus(struct elf_prstatus *prstatus,
* group-wide total, not its individual thread total.
*/
thread_group_cputime(p, &cputime);
cputime_to_timeval(cputime.utime, &prstatus->pr_utime);
cputime_to_timeval(cputime.stime, &prstatus->pr_stime);
prstatus->pr_utime = ns_to_timeval(cputime.utime);
prstatus->pr_stime = ns_to_timeval(cputime.stime);
} else {
cputime_t utime, stime;
u64 utime, stime;
task_cputime(p, &utime, &stime);
cputime_to_timeval(utime, &prstatus->pr_utime);
cputime_to_timeval(stime, &prstatus->pr_stime);
prstatus->pr_utime = ns_to_timeval(utime);
prstatus->pr_stime = ns_to_timeval(stime);
}
cputime_to_timeval(p->signal->cutime, &prstatus->pr_cutime);
cputime_to_timeval(p->signal->cstime, &prstatus->pr_cstime);
prstatus->pr_cutime = ns_to_timeval(p->signal->cutime);
prstatus->pr_cstime = ns_to_timeval(p->signal->cstime);
prstatus->pr_exec_fdpic_loadmap = p->mm->context.exec_fdpic_loadmap;
prstatus->pr_interp_fdpic_loadmap = p->mm->context.interp_fdpic_loadmap;

18
fs/compat_binfmt_elf.c
View File

@ -51,22 +51,8 @@
#define elf_prstatus compat_elf_prstatus
#define elf_prpsinfo compat_elf_prpsinfo
/*
* Compat version of cputime_to_compat_timeval, perhaps this
* should be an inline in <linux/compat.h>.
*/
static void cputime_to_compat_timeval(const cputime_t cputime,
struct compat_timeval *value)
{
struct timeval tv;
cputime_to_timeval(cputime, &tv);
value->tv_sec = tv.tv_sec;
value->tv_usec = tv.tv_usec;
}
#undef cputime_to_timeval
#define cputime_to_timeval cputime_to_compat_timeval
#undef ns_to_timeval
#define ns_to_timeval ns_to_compat_timeval
/*
* To use this file, asm/elf.h must define compat_elf_check_arch.

2
fs/jbd2/commit.c
View File

@ -393,7 +393,7 @@ void jbd2_journal_commit_transaction(journal_t *journal)
/* Do we need to erase the effects of a prior jbd2_journal_flush? */
if (journal->j_flags & JBD2_FLUSHED) {
jbd_debug(3, "super block updated\n");
mutex_lock(&journal->j_checkpoint_mutex);
mutex_lock_io(&journal->j_checkpoint_mutex);
/*
* We hold j_checkpoint_mutex so tail cannot change under us.
* We don't need any special data guarantees for writing sb

12
fs/jbd2/journal.c
View File

@ -944,7 +944,7 @@ int __jbd2_update_log_tail(journal_t *journal, tid_t tid, unsigned long block)
*/
void jbd2_update_log_tail(journal_t *journal, tid_t tid, unsigned long block)
{
mutex_lock(&journal->j_checkpoint_mutex);
mutex_lock_io(&journal->j_checkpoint_mutex);
if (tid_gt(tid, journal->j_tail_sequence))
__jbd2_update_log_tail(journal, tid, block);
mutex_unlock(&journal->j_checkpoint_mutex);
@ -1304,7 +1304,7 @@ static int journal_reset(journal_t *journal)
journal->j_flags |= JBD2_FLUSHED;
} else {
/* Lock here to make assertions happy... */
mutex_lock(&journal->j_checkpoint_mutex);
mutex_lock_io(&journal->j_checkpoint_mutex);
/*
* Update log tail information. We use REQ_FUA since new
* transaction will start reusing journal space and so we
@ -1691,7 +1691,7 @@ int jbd2_journal_destroy(journal_t *journal)
spin_lock(&journal->j_list_lock);
while (journal->j_checkpoint_transactions != NULL) {
spin_unlock(&journal->j_list_lock);
mutex_lock(&journal->j_checkpoint_mutex);
mutex_lock_io(&journal->j_checkpoint_mutex);
err = jbd2_log_do_checkpoint(journal);
mutex_unlock(&journal->j_checkpoint_mutex);
/*
@ -1713,7 +1713,7 @@ int jbd2_journal_destroy(journal_t *journal)
if (journal->j_sb_buffer) {
if (!is_journal_aborted(journal)) {
mutex_lock(&journal->j_checkpoint_mutex);
mutex_lock_io(&journal->j_checkpoint_mutex);
write_lock(&journal->j_state_lock);
journal->j_tail_sequence =
@ -1955,7 +1955,7 @@ int jbd2_journal_flush(journal_t *journal)
spin_lock(&journal->j_list_lock);
while (!err && journal->j_checkpoint_transactions != NULL) {
spin_unlock(&journal->j_list_lock);
mutex_lock(&journal->j_checkpoint_mutex);
mutex_lock_io(&journal->j_checkpoint_mutex);
err = jbd2_log_do_checkpoint(journal);
mutex_unlock(&journal->j_checkpoint_mutex);
spin_lock(&journal->j_list_lock);
@ -1965,7 +1965,7 @@ int jbd2_journal_flush(journal_t *journal)
if (is_journal_aborted(journal))
return -EIO;
mutex_lock(&journal->j_checkpoint_mutex);
mutex_lock_io(&journal->j_checkpoint_mutex);
if (!err) {
err = jbd2_cleanup_journal_tail(journal);
if (err < 0) {

16
fs/proc/array.c
View File

@ -401,8 +401,8 @@ static int do_task_stat(struct seq_file *m, struct pid_namespace *ns,
unsigned long long start_time;
unsigned long cmin_flt = 0, cmaj_flt = 0;
unsigned long min_flt = 0, maj_flt = 0;
cputime_t cutime, cstime, utime, stime;
cputime_t cgtime, gtime;
u64 cutime, cstime, utime, stime;
u64 cgtime, gtime;
unsigned long rsslim = 0;
char tcomm[sizeof(task->comm)];
unsigned long flags;
@ -497,10 +497,10 @@ static int do_task_stat(struct seq_file *m, struct pid_namespace *ns,
seq_put_decimal_ull(m, " ", cmin_flt);
seq_put_decimal_ull(m, " ", maj_flt);
seq_put_decimal_ull(m, " ", cmaj_flt);
seq_put_decimal_ull(m, " ", cputime_to_clock_t(utime));
seq_put_decimal_ull(m, " ", cputime_to_clock_t(stime));
seq_put_decimal_ll(m, " ", cputime_to_clock_t(cutime));
seq_put_decimal_ll(m, " ", cputime_to_clock_t(cstime));
seq_put_decimal_ull(m, " ", nsec_to_clock_t(utime));
seq_put_decimal_ull(m, " ", nsec_to_clock_t(stime));
seq_put_decimal_ll(m, " ", nsec_to_clock_t(cutime));
seq_put_decimal_ll(m, " ", nsec_to_clock_t(cstime));
seq_put_decimal_ll(m, " ", priority);
seq_put_decimal_ll(m, " ", nice);
seq_put_decimal_ll(m, " ", num_threads);
@ -542,8 +542,8 @@ static int do_task_stat(struct seq_file *m, struct pid_namespace *ns,
seq_put_decimal_ull(m, " ", task->rt_priority);
seq_put_decimal_ull(m, " ", task->policy);
seq_put_decimal_ull(m, " ", delayacct_blkio_ticks(task));
seq_put_decimal_ull(m, " ", cputime_to_clock_t(gtime));
seq_put_decimal_ll(m, " ", cputime_to_clock_t(cgtime));
seq_put_decimal_ull(m, " ", nsec_to_clock_t(gtime));
seq_put_decimal_ll(m, " ", nsec_to_clock_t(cgtime));
if (mm && permitted) {
seq_put_decimal_ull(m, " ", mm->start_data);

64
fs/proc/stat.c
View File

@ -21,9 +21,9 @@
#ifdef arch_idle_time
static cputime64_t get_idle_time(int cpu)
static u64 get_idle_time(int cpu)
{
cputime64_t idle;
u64 idle;
idle = kcpustat_cpu(cpu).cpustat[CPUTIME_IDLE];
if (cpu_online(cpu) && !nr_iowait_cpu(cpu))
@ -31,9 +31,9 @@ static cputime64_t get_idle_time(int cpu)
return idle;
}
static cputime64_t get_iowait_time(int cpu)
static u64 get_iowait_time(int cpu)
{
cputime64_t iowait;
u64 iowait;
iowait = kcpustat_cpu(cpu).cpustat[CPUTIME_IOWAIT];
if (cpu_online(cpu) && nr_iowait_cpu(cpu))
@ -45,32 +45,32 @@ static cputime64_t get_iowait_time(int cpu)
static u64 get_idle_time(int cpu)
{
u64 idle, idle_time = -1ULL;
u64 idle, idle_usecs = -1ULL;
if (cpu_online(cpu))
idle_time = get_cpu_idle_time_us(cpu, NULL);
idle_usecs = get_cpu_idle_time_us(cpu, NULL);
if (idle_time == -1ULL)
if (idle_usecs == -1ULL)
/* !NO_HZ or cpu offline so we can rely on cpustat.idle */
idle = kcpustat_cpu(cpu).cpustat[CPUTIME_IDLE];
else
idle = usecs_to_cputime64(idle_time);
idle = idle_usecs * NSEC_PER_USEC;
return idle;
}
static u64 get_iowait_time(int cpu)
{
u64 iowait, iowait_time = -1ULL;
u64 iowait, iowait_usecs = -1ULL;
if (cpu_online(cpu))
iowait_time = get_cpu_iowait_time_us(cpu, NULL);
iowait_usecs = get_cpu_iowait_time_us(cpu, NULL);
if (iowait_time == -1ULL)
if (iowait_usecs == -1ULL)
/* !NO_HZ or cpu offline so we can rely on cpustat.iowait */
iowait = kcpustat_cpu(cpu).cpustat[CPUTIME_IOWAIT];
else
iowait = usecs_to_cputime64(iowait_time);
iowait = iowait_usecs * NSEC_PER_USEC;
return iowait;
}
@ -115,16 +115,16 @@ static int show_stat(struct seq_file *p, void *v)
}
sum += arch_irq_stat();
seq_put_decimal_ull(p, "cpu ", cputime64_to_clock_t(user));
seq_put_decimal_ull(p, " ", cputime64_to_clock_t(nice));
seq_put_decimal_ull(p, " ", cputime64_to_clock_t(system));
seq_put_decimal_ull(p, " ", cputime64_to_clock_t(idle));
seq_put_decimal_ull(p, " ", cputime64_to_clock_t(iowait));
seq_put_decimal_ull(p, " ", cputime64_to_clock_t(irq));
seq_put_decimal_ull(p, " ", cputime64_to_clock_t(softirq));
seq_put_decimal_ull(p, " ", cputime64_to_clock_t(steal));
seq_put_decimal_ull(p, " ", cputime64_to_clock_t(guest));
seq_put_decimal_ull(p, " ", cputime64_to_clock_t(guest_nice));
seq_put_decimal_ull(p, "cpu ", nsec_to_clock_t(user));
seq_put_decimal_ull(p, " ", nsec_to_clock_t(nice));
seq_put_decimal_ull(p, " ", nsec_to_clock_t(system));
seq_put_decimal_ull(p, " ", nsec_to_clock_t(idle));
seq_put_decimal_ull(p, " ", nsec_to_clock_t(iowait));
seq_put_decimal_ull(p, " ", nsec_to_clock_t(irq));
seq_put_decimal_ull(p, " ", nsec_to_clock_t(softirq));
seq_put_decimal_ull(p, " ", nsec_to_clock_t(steal));
seq_put_decimal_ull(p, " ", nsec_to_clock_t(guest));
seq_put_decimal_ull(p, " ", nsec_to_clock_t(guest_nice));
seq_putc(p, '\n');
for_each_online_cpu(i) {
@ -140,16 +140,16 @@ static int show_stat(struct seq_file *p, void *v)
guest = kcpustat_cpu(i).cpustat[CPUTIME_GUEST];
guest_nice = kcpustat_cpu(i).cpustat[CPUTIME_GUEST_NICE];
seq_printf(p, "cpu%d", i);
seq_put_decimal_ull(p, " ", cputime64_to_clock_t(user));
seq_put_decimal_ull(p, " ", cputime64_to_clock_t(nice));
seq_put_decimal_ull(p, " ", cputime64_to_clock_t(system));
seq_put_decimal_ull(p, " ", cputime64_to_clock_t(idle));
seq_put_decimal_ull(p, " ", cputime64_to_clock_t(iowait));
seq_put_decimal_ull(p, " ", cputime64_to_clock_t(irq));
seq_put_decimal_ull(p, " ", cputime64_to_clock_t(softirq));
seq_put_decimal_ull(p, " ", cputime64_to_clock_t(steal));
seq_put_decimal_ull(p, " ", cputime64_to_clock_t(guest));
seq_put_decimal_ull(p, " ", cputime64_to_clock_t(guest_nice));
seq_put_decimal_ull(p, " ", nsec_to_clock_t(user));
seq_put_decimal_ull(p, " ", nsec_to_clock_t(nice));
seq_put_decimal_ull(p, " ", nsec_to_clock_t(system));
seq_put_decimal_ull(p, " ", nsec_to_clock_t(idle));
seq_put_decimal_ull(p, " ", nsec_to_clock_t(iowait));
seq_put_decimal_ull(p, " ", nsec_to_clock_t(irq));
seq_put_decimal_ull(p, " ", nsec_to_clock_t(softirq));
seq_put_decimal_ull(p, " ", nsec_to_clock_t(steal));
seq_put_decimal_ull(p, " ", nsec_to_clock_t(guest));
seq_put_decimal_ull(p, " ", nsec_to_clock_t(guest_nice));
seq_putc(p, '\n');
}
seq_put_decimal_ull(p, "intr ", (unsigned long long)sum);

7
fs/proc/uptime.c
View File

@ -5,23 +5,20 @@
#include <linux/seq_file.h>
#include <linux/time.h>
#include <linux/kernel_stat.h>
#include <linux/cputime.h>
static int uptime_proc_show(struct seq_file *m, void *v)
{
struct timespec uptime;
struct timespec idle;
u64 idletime;
u64 nsec;
u32 rem;
int i;
idletime = 0;
nsec = 0;
for_each_possible_cpu(i)
idletime += (__force u64) kcpustat_cpu(i).cpustat[CPUTIME_IDLE];
nsec += (__force u64) kcpustat_cpu(i).cpustat[CPUTIME_IDLE];
get_monotonic_boottime(&uptime);
nsec = cputime64_to_jiffies64(idletime) * TICK_NSEC;
idle.tv_sec = div_u64_rem(nsec, NSEC_PER_SEC, &rem);
idle.tv_nsec = rem;
seq_printf(m, "%lu.%02lu %lu.%02lu\n",

15
include/asm-generic/cputime.h
View File

@ -1,15 +0,0 @@
#ifndef _ASM_GENERIC_CPUTIME_H
#define _ASM_GENERIC_CPUTIME_H
#include <linux/time.h>
#include <linux/jiffies.h>
#ifndef CONFIG_VIRT_CPU_ACCOUNTING
# include <asm-generic/cputime_jiffies.h>
#endif
#ifdef CONFIG_VIRT_CPU_ACCOUNTING_GEN
# include <asm-generic/cputime_nsecs.h>
#endif
#endif

75
include/asm-generic/cputime_jiffies.h
View File

@ -1,75 +0,0 @@
#ifndef _ASM_GENERIC_CPUTIME_JIFFIES_H
#define _ASM_GENERIC_CPUTIME_JIFFIES_H
typedef unsigned long __nocast cputime_t;
#define cmpxchg_cputime(ptr, old, new) cmpxchg(ptr, old, new)
#define cputime_one_jiffy jiffies_to_cputime(1)
#define cputime_to_jiffies(__ct) (__force unsigned long)(__ct)
#define jiffies_to_cputime(__hz) (__force cputime_t)(__hz)
typedef u64 __nocast cputime64_t;
#define cputime64_to_jiffies64(__ct) (__force u64)(__ct)
#define jiffies64_to_cputime64(__jif) (__force cputime64_t)(__jif)
/*
* Convert nanoseconds <-> cputime
*/
#define cputime_to_nsecs(__ct) \
jiffies_to_nsecs(cputime_to_jiffies(__ct))
#define nsecs_to_cputime64(__nsec) \
jiffies64_to_cputime64(nsecs_to_jiffies64(__nsec))
#define nsecs_to_cputime(__nsec) \
jiffies_to_cputime(nsecs_to_jiffies(__nsec))
/*
* Convert cputime to microseconds and back.
*/
#define cputime_to_usecs(__ct) \
jiffies_to_usecs(cputime_to_jiffies(__ct))
#define usecs_to_cputime(__usec) \
jiffies_to_cputime(usecs_to_jiffies(__usec))
#define usecs_to_cputime64(__usec) \
jiffies64_to_cputime64(nsecs_to_jiffies64((__usec) * 1000))
/*
* Convert cputime to seconds and back.
*/
#define cputime_to_secs(jif) (cputime_to_jiffies(jif) / HZ)
#define secs_to_cputime(sec) jiffies_to_cputime((sec) * HZ)
/*
* Convert cputime to timespec and back.
*/
#define timespec_to_cputime(__val) \
jiffies_to_cputime(timespec_to_jiffies(__val))
#define cputime_to_timespec(__ct,__val) \
jiffies_to_timespec(cputime_to_jiffies(__ct),__val)
/*
* Convert cputime to timeval and back.
*/
#define timeval_to_cputime(__val) \
jiffies_to_cputime(timeval_to_jiffies(__val))
#define cputime_to_timeval(__ct,__val) \
jiffies_to_timeval(cputime_to_jiffies(__ct),__val)
/*
* Convert cputime to clock and back.
*/
#define cputime_to_clock_t(__ct) \
jiffies_to_clock_t(cputime_to_jiffies(__ct))
#define clock_t_to_cputime(__x) \
jiffies_to_cputime(clock_t_to_jiffies(__x))
/*
* Convert cputime64 to clock.
*/
#define cputime64_to_clock_t(__ct) \
jiffies_64_to_clock_t(cputime64_to_jiffies64(__ct))
#endif

121
include/asm-generic/cputime_nsecs.h
View File

@ -1,121 +0,0 @@
/*
* Definitions for measuring cputime in nsecs resolution.
*
* Based on <arch/ia64/include/asm/cputime.h>
*
* Copyright (C) 2007 FUJITSU LIMITED
* Copyright (C) 2007 Hidetoshi Seto <seto.hidetoshi@jp.fujitsu.com>
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License
* as published by the Free Software Foundation; either version
* 2 of the License, or (at your option) any later version.
*
*/
#ifndef _ASM_GENERIC_CPUTIME_NSECS_H
#define _ASM_GENERIC_CPUTIME_NSECS_H
#include <linux/math64.h>
typedef u64 __nocast cputime_t;
typedef u64 __nocast cputime64_t;
#define cmpxchg_cputime(ptr, old, new) cmpxchg64(ptr, old, new)
#define cputime_one_jiffy jiffies_to_cputime(1)
#define cputime_div(__ct, divisor) div_u64((__force u64)__ct, divisor)
#define cputime_div_rem(__ct, divisor, remainder) \
div_u64_rem((__force u64)__ct, divisor, remainder);
/*
* Convert cputime <-> jiffies (HZ)
*/
#define cputime_to_jiffies(__ct) \
cputime_div(__ct, NSEC_PER_SEC / HZ)
#define jiffies_to_cputime(__jif) \
(__force cputime_t)((__jif) * (NSEC_PER_SEC / HZ))
#define cputime64_to_jiffies64(__ct) \
cputime_div(__ct, NSEC_PER_SEC / HZ)
#define jiffies64_to_cputime64(__jif) \
(__force cputime64_t)((__jif) * (NSEC_PER_SEC / HZ))
/*
* Convert cputime <-> nanoseconds
*/
#define cputime_to_nsecs(__ct) \
(__force u64)(__ct)
#define nsecs_to_cputime(__nsecs) \
(__force cputime_t)(__nsecs)
#define nsecs_to_cputime64(__nsecs) \
(__force cputime64_t)(__nsecs)
/*
* Convert cputime <-> microseconds
*/
#define cputime_to_usecs(__ct) \
cputime_div(__ct, NSEC_PER_USEC)
#define usecs_to_cputime(__usecs) \
(__force cputime_t)((__usecs) * NSEC_PER_USEC)
#define usecs_to_cputime64(__usecs) \
(__force cputime64_t)((__usecs) * NSEC_PER_USEC)
/*
* Convert cputime <-> seconds
*/
#define cputime_to_secs(__ct) \
cputime_div(__ct, NSEC_PER_SEC)
#define secs_to_cputime(__secs) \
(__force cputime_t)((__secs) * NSEC_PER_SEC)
/*
* Convert cputime <-> timespec (nsec)
*/
static inline cputime_t timespec_to_cputime(const struct timespec *val)
{
u64 ret = (u64)val->tv_sec * NSEC_PER_SEC + val->tv_nsec;
return (__force cputime_t) ret;
}
static inline void cputime_to_timespec(const cputime_t ct, struct timespec *val)
{
u32 rem;
val->tv_sec = cputime_div_rem(ct, NSEC_PER_SEC, &rem);
val->tv_nsec = rem;
}
/*
* Convert cputime <-> timeval (msec)
*/
static inline cputime_t timeval_to_cputime(const struct timeval *val)
{
u64 ret = (u64)val->tv_sec * NSEC_PER_SEC +
val->tv_usec * NSEC_PER_USEC;
return (__force cputime_t) ret;
}
static inline void cputime_to_timeval(const cputime_t ct, struct timeval *val)
{
u32 rem;
val->tv_sec = cputime_div_rem(ct, NSEC_PER_SEC, &rem);
val->tv_usec = rem / NSEC_PER_USEC;
}
/*
* Convert cputime <-> clock (USER_HZ)
*/
#define cputime_to_clock_t(__ct) \
cputime_div(__ct, (NSEC_PER_SEC / USER_HZ))
#define clock_t_to_cputime(__x) \
(__force cputime_t)((__x) * (NSEC_PER_SEC / USER_HZ))
/*
* Convert cputime64 to clock.
*/
#define cputime64_to_clock_t(__ct) \
cputime_to_clock_t((__force cputime_t)__ct)
#endif

3
include/linux/clocksource.h
View File

@ -62,6 +62,8 @@ struct module;
* @archdata: arch-specific data
* @suspend: suspend function for the clocksource, if necessary
* @resume: resume function for the clocksource, if necessary
* @mark_unstable: Optional function to inform the clocksource driver that
* the watchdog marked the clocksource unstable
* @owner: module reference, must be set by clocksource in modules
*
* Note: This struct is not used in hotpathes of the timekeeping code
@ -93,6 +95,7 @@ struct clocksource {
unsigned long flags;
void (*suspend)(struct clocksource *cs);
void (*resume)(struct clocksource *cs);
void (*mark_unstable)(struct clocksource *cs);
/* private: */
#ifdef CONFIG_CLOCKSOURCE_WATCHDOG

20
include/linux/compat.h
View File

@ -731,7 +731,25 @@ asmlinkage long compat_sys_fanotify_mark(int, unsigned int, __u32, __u32,
static inline bool in_compat_syscall(void) { return is_compat_task(); }
#endif
#else
/**
* ns_to_compat_timeval - Compat version of ns_to_timeval
* @nsec: the nanoseconds value to be converted
*
* Returns the compat_timeval representation of the nsec parameter.
*/
static inline struct compat_timeval ns_to_compat_timeval(s64 nsec)
{
struct timeval tv;
struct compat_timeval ctv;
tv = ns_to_timeval(nsec);
ctv.tv_sec = tv.tv_sec;
ctv.tv_usec = tv.tv_usec;
return ctv;
}
#else /* !CONFIG_COMPAT */
#define is_compat_task() (0)
static inline bool in_compat_syscall(void) { return false; }

7
include/linux/cputime.h
View File

@ -1,6 +1,7 @@
#ifndef __LINUX_CPUTIME_H
#define __LINUX_CPUTIME_H
#ifdef CONFIG_VIRT_CPU_ACCOUNTING_NATIVE
#include <asm/cputime.h>
#ifndef cputime_to_nsecs
@ -8,9 +9,5 @@
(cputime_to_usecs(__ct) * NSEC_PER_USEC)
#endif
#ifndef nsecs_to_cputime
# define nsecs_to_cputime(__nsecs) \
usecs_to_cputime((__nsecs) / NSEC_PER_USEC)
#endif
#endif /* CONFIG_VIRT_CPU_ACCOUNTING_NATIVE */
#endif /* __LINUX_CPUTIME_H */

1
include/linux/delayacct.h
View File

@ -17,6 +17,7 @@
#ifndef _LINUX_DELAYACCT_H
#define _LINUX_DELAYACCT_H
#include <uapi/linux/taskstats.h>
#include <linux/sched.h>
#include <linux/slab.h>

2
include/linux/jiffies.h
View File

@ -293,6 +293,8 @@ static inline u64 jiffies_to_nsecs(const unsigned long j)
return (u64)jiffies_to_usecs(j) * NSEC_PER_USEC;
}
extern u64 jiffies64_to_nsecs(u64 j);
extern unsigned long __msecs_to_jiffies(const unsigned int m);
#if HZ <= MSEC_PER_SEC && !(MSEC_PER_SEC % HZ)
/*

14
include/linux/kernel_stat.h
View File

@ -9,7 +9,6 @@
#include <linux/sched.h>
#include <linux/vtime.h>
#include <asm/irq.h>
#include <linux/cputime.h>
/*
* 'kernel_stat.h' contains the definitions needed for doing
@ -78,15 +77,18 @@ static inline unsigned int kstat_cpu_irqs_sum(unsigned int cpu)
return kstat_cpu(cpu).irqs_sum;
}
extern void account_user_time(struct task_struct *, cputime_t);
extern void account_system_time(struct task_struct *, int, cputime_t);
extern void account_steal_time(cputime_t);
extern void account_idle_time(cputime_t);
extern void account_user_time(struct task_struct *, u64);
extern void account_guest_time(struct task_struct *, u64);
extern void account_system_time(struct task_struct *, int, u64);
extern void account_system_index_time(struct task_struct *, u64,
enum cpu_usage_stat);
extern void account_steal_time(u64);
extern void account_idle_time(u64);
#ifdef CONFIG_VIRT_CPU_ACCOUNTING_NATIVE
static inline void account_process_tick(struct task_struct *tsk, int user)
{
vtime_account_user(tsk);
vtime_flush(tsk);
}
#else
extern void account_process_tick(struct task_struct *, int user);

4
include/linux/mutex.h
View File

@ -156,10 +156,12 @@ extern int __must_check mutex_lock_interruptible_nested(struct mutex *lock,
unsigned int subclass);
extern int __must_check mutex_lock_killable_nested(struct mutex *lock,
unsigned int subclass);
extern void mutex_lock_io_nested(struct mutex *lock, unsigned int subclass);
#define mutex_lock(lock) mutex_lock_nested(lock, 0)
#define mutex_lock_interruptible(lock) mutex_lock_interruptible_nested(lock, 0)
#define mutex_lock_killable(lock) mutex_lock_killable_nested(lock, 0)
#define mutex_lock_io(lock) mutex_lock_io_nested(lock, 0)
#define mutex_lock_nest_lock(lock, nest_lock) \
do { \
@ -171,11 +173,13 @@ do { \
extern void mutex_lock(struct mutex *lock);
extern int __must_check mutex_lock_interruptible(struct mutex *lock);
extern int __must_check mutex_lock_killable(struct mutex *lock);
extern void mutex_lock_io(struct mutex *lock);
# define mutex_lock_nested(lock, subclass) mutex_lock(lock)
# define mutex_lock_interruptible_nested(lock, subclass) mutex_lock_interruptible(lock)
# define mutex_lock_killable_nested(lock, subclass) mutex_lock_killable(lock)
# define mutex_lock_nest_lock(lock, nest_lock) mutex_lock(lock)
# define mutex_lock_io_nested(lock, subclass) mutex_lock(lock)
#endif
/*

14
include/linux/posix-timers.h
View File

@ -8,19 +8,9 @@
#include <linux/alarmtimer.h>
static inline unsigned long long cputime_to_expires(cputime_t expires)
{
return (__force unsigned long long)expires;
}
static inline cputime_t expires_to_cputime(unsigned long long expires)
{
return (__force cputime_t)expires;
}
struct cpu_timer_list {
struct list_head entry;
unsigned long long expires, incr;
u64 expires, incr;
struct task_struct *task;
int firing;
};
@ -129,7 +119,7 @@ void run_posix_cpu_timers(struct task_struct *task);
void posix_cpu_timers_exit(struct task_struct *task);
void posix_cpu_timers_exit_group(struct task_struct *task);
void set_process_cpu_timer(struct task_struct *task, unsigned int clock_idx,
cputime_t *newval, cputime_t *oldval);
u64 *newval, u64 *oldval);
long clock_nanosleep_restart(struct restart_block *restart_block);

80
include/linux/sched.h
View File

@ -29,7 +29,6 @@ struct sched_param {
#include <asm/page.h>
#include <asm/ptrace.h>
#include <linux/cputime.h>
#include <linux/smp.h>
#include <linux/sem.h>
@ -461,12 +460,10 @@ extern signed long schedule_timeout_idle(signed long timeout);
asmlinkage void schedule(void);
extern void schedule_preempt_disabled(void);
extern int __must_check io_schedule_prepare(void);
extern void io_schedule_finish(int token);
extern long io_schedule_timeout(long timeout);
static inline void io_schedule(void)
{
io_schedule_timeout(MAX_SCHEDULE_TIMEOUT);
}
extern void io_schedule(void);
void __noreturn do_task_dead(void);
@ -565,15 +562,13 @@ struct pacct_struct {
int ac_flag;
long ac_exitcode;
unsigned long ac_mem;
cputime_t ac_utime, ac_stime;
u64 ac_utime, ac_stime;
unsigned long ac_minflt, ac_majflt;
};
struct cpu_itimer {
cputime_t expires;
cputime_t incr;
u32 error;
u32 incr_error;
u64 expires;
u64 incr;
};
/**
@ -587,8 +582,8 @@ struct cpu_itimer {
*/
struct prev_cputime {
#ifndef CONFIG_VIRT_CPU_ACCOUNTING_NATIVE
cputime_t utime;
cputime_t stime;
u64 utime;
u64 stime;
raw_spinlock_t lock;
#endif
};
@ -603,8 +598,8 @@ static inline void prev_cputime_init(struct prev_cputime *prev)
/**
* struct task_cputime - collected CPU time counts
* @utime: time spent in user mode, in &cputime_t units
* @stime: time spent in kernel mode, in &cputime_t units
* @utime: time spent in user mode, in nanoseconds
* @stime: time spent in kernel mode, in nanoseconds
* @sum_exec_runtime: total time spent on the CPU, in nanoseconds
*
* This structure groups together three kinds of CPU time that are tracked for
@ -612,8 +607,8 @@ static inline void prev_cputime_init(struct prev_cputime *prev)
* these counts together and treat all three of them in parallel.
*/
struct task_cputime {
cputime_t utime;
cputime_t stime;
u64 utime;
u64 stime;
unsigned long long sum_exec_runtime;
};
@ -622,13 +617,6 @@ struct task_cputime {
#define prof_exp stime
#define sched_exp sum_exec_runtime
#define INIT_CPUTIME \
(struct task_cputime) { \
.utime = 0, \
.stime = 0, \
.sum_exec_runtime = 0, \
}
/*
* This is the atomic variant of task_cputime, which can be used for
* storing and updating task_cputime statistics without locking.
@ -787,9 +775,9 @@ struct signal_struct {
* in __exit_signal, except for the group leader.
*/
seqlock_t stats_lock;
cputime_t utime, stime, cutime, cstime;
cputime_t gtime;
cputime_t cgtime;
u64 utime, stime, cutime, cstime;
u64 gtime;
u64 cgtime;
struct prev_cputime prev_cputime;
unsigned long nvcsw, nivcsw, cnvcsw, cnivcsw;
unsigned long min_flt, maj_flt, cmin_flt, cmaj_flt;
@ -1668,11 +1656,11 @@ struct task_struct {
int __user *set_child_tid; /* CLONE_CHILD_SETTID */
int __user *clear_child_tid; /* CLONE_CHILD_CLEARTID */
cputime_t utime, stime;
u64 utime, stime;
#ifdef CONFIG_ARCH_HAS_SCALED_CPUTIME
cputime_t utimescaled, stimescaled;
u64 utimescaled, stimescaled;
#endif
cputime_t gtime;
u64 gtime;
struct prev_cputime prev_cputime;
#ifdef CONFIG_VIRT_CPU_ACCOUNTING_GEN
seqcount_t vtime_seqcount;
@ -1824,7 +1812,7 @@ struct task_struct {
#if defined(CONFIG_TASK_XACCT)
u64 acct_rss_mem1; /* accumulated rss usage */
u64 acct_vm_mem1; /* accumulated virtual memory usage */
cputime_t acct_timexpd; /* stime + utime since last update */
u64 acct_timexpd; /* stime + utime since last update */
#endif
#ifdef CONFIG_CPUSETS
nodemask_t mems_allowed; /* Protected by alloc_lock */
@ -2269,17 +2257,17 @@ struct task_struct *try_get_task_struct(struct task_struct **ptask);
#ifdef CONFIG_VIRT_CPU_ACCOUNTING_GEN
extern void task_cputime(struct task_struct *t,
cputime_t *utime, cputime_t *stime);
extern cputime_t task_gtime(struct task_struct *t);
u64 *utime, u64 *stime);
extern u64 task_gtime(struct task_struct *t);
#else
static inline void task_cputime(struct task_struct *t,
cputime_t *utime, cputime_t *stime)
u64 *utime, u64 *stime)
{
*utime = t->utime;
*stime = t->stime;
}
static inline cputime_t task_gtime(struct task_struct *t)
static inline u64 task_gtime(struct task_struct *t)
{
return t->gtime;
}
@ -2287,23 +2275,23 @@ static inline cputime_t task_gtime(struct task_struct *t)
#ifdef CONFIG_ARCH_HAS_SCALED_CPUTIME
static inline void task_cputime_scaled(struct task_struct *t,
cputime_t *utimescaled,
cputime_t *stimescaled)
u64 *utimescaled,
u64 *stimescaled)
{
*utimescaled = t->utimescaled;
*stimescaled = t->stimescaled;
}
#else
static inline void task_cputime_scaled(struct task_struct *t,
cputime_t *utimescaled,
cputime_t *stimescaled)
u64 *utimescaled,
u64 *stimescaled)
{
task_cputime(t, utimescaled, stimescaled);
}
#endif
extern void task_cputime_adjusted(struct task_struct *p, cputime_t *ut, cputime_t *st);
extern void thread_group_cputime_adjusted(struct task_struct *p, cputime_t *ut, cputime_t *st);
extern void task_cputime_adjusted(struct task_struct *p, u64 *ut, u64 *st);
extern void thread_group_cputime_adjusted(struct task_struct *p, u64 *ut, u64 *st);
/*
* Per process flags
@ -2522,10 +2510,18 @@ extern u64 sched_clock_cpu(int cpu);
extern void sched_clock_init(void);
#ifndef CONFIG_HAVE_UNSTABLE_SCHED_CLOCK
static inline void sched_clock_init_late(void)
{
}
static inline void sched_clock_tick(void)
{
}
static inline void clear_sched_clock_stable(void)
{
}
static inline void sched_clock_idle_sleep_event(void)
{
}
@ -2544,6 +2540,7 @@ static inline u64 local_clock(void)
return sched_clock();
}
#else
extern void sched_clock_init_late(void);
/*
* Architectures can set this to 1 if they have specified
* CONFIG_HAVE_UNSTABLE_SCHED_CLOCK in their arch Kconfig,
@ -2551,7 +2548,6 @@ static inline u64 local_clock(void)
* is reliable after all:
*/
extern int sched_clock_stable(void);
extern void set_sched_clock_stable(void);
extern void clear_sched_clock_stable(void);
extern void sched_clock_tick(void);

1
include/linux/sched/sysctl.h
View File

@ -59,6 +59,7 @@ extern unsigned int sysctl_sched_cfs_bandwidth_slice;
extern unsigned int sysctl_sched_autogroup_enabled;
#endif
extern int sysctl_sched_rr_timeslice;
extern int sched_rr_timeslice;
extern int sched_rr_handler(struct ctl_table *table, int write,

7
include/linux/vtime.h
View File

@ -58,27 +58,28 @@ static inline void vtime_task_switch(struct task_struct *prev)
extern void vtime_account_system(struct task_struct *tsk);
extern void vtime_account_idle(struct task_struct *tsk);
extern void vtime_account_user(struct task_struct *tsk);
#else /* !CONFIG_VIRT_CPU_ACCOUNTING */
static inline void vtime_task_switch(struct task_struct *prev) { }
static inline void vtime_account_system(struct task_struct *tsk) { }
static inline void vtime_account_user(struct task_struct *tsk) { }
#endif /* !CONFIG_VIRT_CPU_ACCOUNTING */
#ifdef CONFIG_VIRT_CPU_ACCOUNTING_GEN
extern void arch_vtime_task_switch(struct task_struct *tsk);
extern void vtime_account_user(struct task_struct *tsk);
extern void vtime_user_enter(struct task_struct *tsk);
static inline void vtime_user_exit(struct task_struct *tsk)
{
vtime_account_user(tsk);
}
extern void vtime_guest_enter(struct task_struct *tsk);
extern void vtime_guest_exit(struct task_struct *tsk);
extern void vtime_init_idle(struct task_struct *tsk, int cpu);
#else /* !CONFIG_VIRT_CPU_ACCOUNTING_GEN */
static inline void vtime_account_user(struct task_struct *tsk) { }
static inline void vtime_user_enter(struct task_struct *tsk) { }
static inline void vtime_user_exit(struct task_struct *tsk) { }
static inline void vtime_guest_enter(struct task_struct *tsk) { }
@ -93,9 +94,11 @@ static inline void vtime_account_irq_exit(struct task_struct *tsk)
/* On hard|softirq exit we always account to hard|softirq cputime */
vtime_account_system(tsk);
}
extern void vtime_flush(struct task_struct *tsk);
#else /* !CONFIG_VIRT_CPU_ACCOUNTING_NATIVE */
static inline void vtime_account_irq_enter(struct task_struct *tsk) { }
static inline void vtime_account_irq_exit(struct task_struct *tsk) { }
static inline void vtime_flush(struct task_struct *tsk) { }
#endif

26
include/trace/events/timer.h
View File

@ -269,17 +269,17 @@ DEFINE_EVENT(hrtimer_class, hrtimer_cancel,
TRACE_EVENT(itimer_state,
TP_PROTO(int which, const struct itimerval *const value,
cputime_t expires),
unsigned long long expires),
TP_ARGS(which, value, expires),
TP_STRUCT__entry(
__field( int, which )
__field( cputime_t, expires )
__field( long, value_sec )
__field( long, value_usec )
__field( long, interval_sec )
__field( long, interval_usec )
__field( int, which )
__field( unsigned long long, expires )
__field( long, value_sec )
__field( long, value_usec )
__field( long, interval_sec )
__field( long, interval_usec )
),
TP_fast_assign(
@ -292,7 +292,7 @@ TRACE_EVENT(itimer_state,
),
TP_printk("which=%d expires=%llu it_value=%ld.%ld it_interval=%ld.%ld",
__entry->which, (unsigned long long)__entry->expires,
__entry->which, __entry->expires,
__entry->value_sec, __entry->value_usec,
__entry->interval_sec, __entry->interval_usec)
);
@ -305,14 +305,14 @@ TRACE_EVENT(itimer_state,
*/
TRACE_EVENT(itimer_expire,
TP_PROTO(int which, struct pid *pid, cputime_t now),
TP_PROTO(int which, struct pid *pid, unsigned long long now),
TP_ARGS(which, pid, now),
TP_STRUCT__entry(
__field( int , which )
__field( pid_t, pid )
__field( cputime_t, now )
__field( int , which )
__field( pid_t, pid )
__field( unsigned long long, now )
),
TP_fast_assign(
@ -322,7 +322,7 @@ TRACE_EVENT(itimer_expire,
),
TP_printk("which=%d pid=%d now=%llu", __entry->which,
(int) __entry->pid, (unsigned long long)__entry->now)
(int) __entry->pid, __entry->now)
);
#ifdef CONFIG_NO_HZ_COMMON

1
init/main.c
View File

@ -625,7 +625,6 @@ asmlinkage __visible void __init start_kernel(void)
numa_policy_init();
if (late_time_init)
late_time_init();
sched_clock_init();
calibrate_delay();
pidmap_init();
anon_vma_init();

7
kernel/acct.c
View File

@ -453,8 +453,8 @@ static void fill_ac(acct_t *ac)
spin_lock_irq(&current->sighand->siglock);
tty = current->signal->tty; /* Safe as we hold the siglock */
ac->ac_tty = tty ? old_encode_dev(tty_devnum(tty)) : 0;
ac->ac_utime = encode_comp_t(jiffies_to_AHZ(cputime_to_jiffies(pacct->ac_utime)));
ac->ac_stime = encode_comp_t(jiffies_to_AHZ(cputime_to_jiffies(pacct->ac_stime)));
ac->ac_utime = encode_comp_t(nsec_to_AHZ(pacct->ac_utime));
ac->ac_stime = encode_comp_t(nsec_to_AHZ(pacct->ac_stime));
ac->ac_flag = pacct->ac_flag;
ac->ac_mem = encode_comp_t(pacct->ac_mem);
ac->ac_minflt = encode_comp_t(pacct->ac_minflt);
@ -530,7 +530,7 @@ static void do_acct_process(struct bsd_acct_struct *acct)
void acct_collect(long exitcode, int group_dead)
{
struct pacct_struct *pacct = &current->signal->pacct;
cputime_t utime, stime;
u64 utime, stime;
unsigned long vsize = 0;
if (group_dead && current->mm) {
@ -559,6 +559,7 @@ void acct_collect(long exitcode, int group_dead)
pacct->ac_flag |= ACORE;
if (current->flags & PF_SIGNALED)
pacct->ac_flag |= AXSIG;
task_cputime(current, &utime, &stime);
pacct->ac_utime += utime;
pacct->ac_stime += stime;

6
kernel/delayacct.c
View File

@ -82,19 +82,19 @@ void __delayacct_blkio_end(void)
int __delayacct_add_tsk(struct taskstats *d, struct task_struct *tsk)
{
cputime_t utime, stime, stimescaled, utimescaled;
u64 utime, stime, stimescaled, utimescaled;
unsigned long long t2, t3;
unsigned long flags, t1;
s64 tmp;
task_cputime(tsk, &utime, &stime);
tmp = (s64)d->cpu_run_real_total;
tmp += cputime_to_nsecs(utime + stime);
tmp += utime + stime;
d->cpu_run_real_total = (tmp < (s64)d->cpu_run_real_total) ? 0 : tmp;
task_cputime_scaled(tsk, &utimescaled, &stimescaled);
tmp = (s64)d->cpu_scaled_run_real_total;
tmp += cputime_to_nsecs(utimescaled + stimescaled);
tmp += utimescaled + stimescaled;
d->cpu_scaled_run_real_total =
(tmp < (s64)d->cpu_scaled_run_real_total) ? 0 : tmp;

4
kernel/exit.c
View File

@ -86,7 +86,7 @@ static void __exit_signal(struct task_struct *tsk)
bool group_dead = thread_group_leader(tsk);
struct sighand_struct *sighand;
struct tty_struct *uninitialized_var(tty);
cputime_t utime, stime;
u64 utime, stime;
sighand = rcu_dereference_check(tsk->sighand,
lockdep_tasklist_lock_is_held());
@ -1091,7 +1091,7 @@ static int wait_task_zombie(struct wait_opts *wo, struct task_struct *p)
struct signal_struct *sig = p->signal;
struct signal_struct *psig = current->signal;
unsigned long maxrss;
cputime_t tgutime, tgstime;
u64 tgutime, tgstime;
/*
* The resource counters for the group leader are in its

2
kernel/fork.c
View File

@ -1314,7 +1314,7 @@ static void posix_cpu_timers_init_group(struct signal_struct *sig)
cpu_limit = READ_ONCE(sig->rlim[RLIMIT_CPU].rlim_cur);
if (cpu_limit != RLIM_INFINITY) {
sig->cputime_expires.prof_exp = secs_to_cputime(cpu_limit);
sig->cputime_expires.prof_exp = cpu_limit * NSEC_PER_SEC;
sig->cputimer.running = true;
}

24
kernel/locking/mutex.c
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@ -783,6 +783,20 @@ mutex_lock_interruptible_nested(struct mutex *lock, unsigned int subclass)
}
EXPORT_SYMBOL_GPL(mutex_lock_interruptible_nested);
void __sched
mutex_lock_io_nested(struct mutex *lock, unsigned int subclass)
{
int token;
might_sleep();
token = io_schedule_prepare();
__mutex_lock_common(lock, TASK_UNINTERRUPTIBLE,
subclass, NULL, _RET_IP_, NULL, 0);
io_schedule_finish(token);
}
EXPORT_SYMBOL_GPL(mutex_lock_io_nested);
static inline int
ww_mutex_deadlock_injection(struct ww_mutex *lock, struct ww_acquire_ctx *ctx)
{
@ -950,6 +964,16 @@ int __sched mutex_lock_killable(struct mutex *lock)
}
EXPORT_SYMBOL(mutex_lock_killable);
void __sched mutex_lock_io(struct mutex *lock)
{
int token;
token = io_schedule_prepare();
mutex_lock(lock);
io_schedule_finish(token);
}
EXPORT_SYMBOL_GPL(mutex_lock_io);
static noinline void __sched
__mutex_lock_slowpath(struct mutex *lock)
{

4
kernel/sched/Makefile
View File

@ -18,8 +18,8 @@ endif
obj-y += core.o loadavg.o clock.o cputime.o
obj-y += idle_task.o fair.o rt.o deadline.o stop_task.o
obj-y += wait.o swait.o completion.o idle.o
obj-$(CONFIG_SMP) += cpupri.o cpudeadline.o
obj-$(CONFIG_SCHED_AUTOGROUP) += auto_group.o
obj-$(CONFIG_SMP) += cpupri.o cpudeadline.o topology.o
obj-$(CONFIG_SCHED_AUTOGROUP) += autogroup.o
obj-$(CONFIG_SCHEDSTATS) += stats.o
obj-$(CONFIG_SCHED_DEBUG) += debug.o
obj-$(CONFIG_CGROUP_CPUACCT) += cpuacct.o

0
kernel/sched/auto_group.c → kernel/sched/autogroup.c
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0
kernel/sched/auto_group.h → kernel/sched/autogroup.h
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