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ARM: perf: consistently use struct perf_event in arm_pmu functions 

The arm_pmu functions have wildly varied parameters which can often be
derived from struct perf_event.

This patch changes the arm_pmu function prototypes so that struct
perf_event pointers are passed in preference to fields that can be
derived from the event.

Signed-off-by: Sudeep KarkadaNagesha <Sudeep.KarkadaNagesha@arm.com>
Signed-off-by: Will Deacon <will.deacon@arm.com>
This commit is contained in:
Sudeep KarkadaNagesha 2012-07-30 12:00:02 +01:00 committed by Will Deacon
parent 513c99ce4e
commit ed6f2a5223
6 changed files with 142 additions and 121 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

26
arch/arm/include/asm/pmu.h
View File

@ -67,19 +67,19 @@ struct arm_pmu {
cpumask_t active_irqs;
char *name;
irqreturn_t (*handle_irq)(int irq_num, void *dev);
void (*enable)(struct hw_perf_event *evt, int idx);
void (*disable)(struct hw_perf_event *evt, int idx);
void (*enable)(struct perf_event *event);
void (*disable)(struct perf_event *event);
int (*get_event_idx)(struct pmu_hw_events *hw_events,
struct hw_perf_event *hwc);
struct perf_event *event);
int (*set_event_filter)(struct hw_perf_event *evt,
struct perf_event_attr *attr);
u32 (*read_counter)(int idx);
void (*write_counter)(int idx, u32 val);
void (*start)(void);
void (*stop)(void);
u32 (*read_counter)(struct perf_event *event);
void (*write_counter)(struct perf_event *event, u32 val);
void (*start)(struct arm_pmu *);
void (*stop)(struct arm_pmu *);
void (*reset)(void *);
int (*request_irq)(irq_handler_t handler);
void (*free_irq)(void);
int (*request_irq)(struct arm_pmu *, irq_handler_t handler);
void (*free_irq)(struct arm_pmu *);
int (*map_event)(struct perf_event *event);
int num_events;
atomic_t active_events;
@ -95,13 +95,9 @@ extern const struct dev_pm_ops armpmu_dev_pm_ops;
int armpmu_register(struct arm_pmu *armpmu, char *name, int type);
u64 armpmu_event_update(struct perf_event *event,
struct hw_perf_event *hwc,
int idx);
u64 armpmu_event_update(struct perf_event *event);
int armpmu_event_set_period(struct perf_event *event,
struct hw_perf_event *hwc,
int idx);
int armpmu_event_set_period(struct perf_event *event);
int armpmu_map_event(struct perf_event *event,
const unsigned (*event_map)[PERF_COUNT_HW_MAX],

44
arch/arm/kernel/perf_event.c
View File

@ -86,12 +86,10 @@ armpmu_map_event(struct perf_event *event,
return -ENOENT;
}
int
armpmu_event_set_period(struct perf_event *event,
struct hw_perf_event *hwc,
int idx)
int armpmu_event_set_period(struct perf_event *event)
{
struct arm_pmu *armpmu = to_arm_pmu(event->pmu);
struct hw_perf_event *hwc = &event->hw;
s64 left = local64_read(&hwc->period_left);
s64 period = hwc->sample_period;
int ret = 0;
@ -119,24 +117,22 @@ armpmu_event_set_period(struct perf_event *event,
local64_set(&hwc->prev_count, (u64)-left);
armpmu->write_counter(idx, (u64)(-left) & 0xffffffff);
armpmu->write_counter(event, (u64)(-left) & 0xffffffff);
perf_event_update_userpage(event);
return ret;
}
u64
armpmu_event_update(struct perf_event *event,
struct hw_perf_event *hwc,
int idx)
u64 armpmu_event_update(struct perf_event *event)
{
struct arm_pmu *armpmu = to_arm_pmu(event->pmu);
struct hw_perf_event *hwc = &event->hw;
u64 delta, prev_raw_count, new_raw_count;
again:
prev_raw_count = local64_read(&hwc->prev_count);
new_raw_count = armpmu->read_counter(idx);
new_raw_count = armpmu->read_counter(event);
if (local64_cmpxchg(&hwc->prev_count, prev_raw_count,
new_raw_count) != prev_raw_count)
@ -159,7 +155,7 @@ armpmu_read(struct perf_event *event)
if (hwc->idx < 0)
return;
armpmu_event_update(event, hwc, hwc->idx);
armpmu_event_update(event);
}
static void
@ -173,14 +169,13 @@ armpmu_stop(struct perf_event *event, int flags)
* PERF_EF_UPDATE, see comments in armpmu_start().
*/
if (!(hwc->state & PERF_HES_STOPPED)) {
armpmu->disable(hwc, hwc->idx);
armpmu_event_update(event, hwc, hwc->idx);
armpmu->disable(event);
armpmu_event_update(event);
hwc->state |= PERF_HES_STOPPED | PERF_HES_UPTODATE;
}
}
static void
armpmu_start(struct perf_event *event, int flags)
static void armpmu_start(struct perf_event *event, int flags)
{
struct arm_pmu *armpmu = to_arm_pmu(event->pmu);
struct hw_perf_event *hwc = &event->hw;
@ -200,8 +195,8 @@ armpmu_start(struct perf_event *event, int flags)
* get an interrupt too soon or *way* too late if the overflow has
* happened since disabling.
*/
armpmu_event_set_period(event, hwc, hwc->idx);
armpmu->enable(hwc, hwc->idx);
armpmu_event_set_period(event);
armpmu->enable(event);
}
static void
@ -233,7 +228,7 @@ armpmu_add(struct perf_event *event, int flags)
perf_pmu_disable(event->pmu);
/* If we don't have a space for the counter then finish early. */
idx = armpmu->get_event_idx(hw_events, hwc);
idx = armpmu->get_event_idx(hw_events, event);
if (idx < 0) {
err = idx;
goto out;
@ -244,7 +239,7 @@ armpmu_add(struct perf_event *event, int flags)
* sure it is disabled.
*/
event->hw.idx = idx;
armpmu->disable(hwc, idx);
armpmu->disable(event);
hw_events->events[idx] = event;
hwc->state = PERF_HES_STOPPED | PERF_HES_UPTODATE;
@ -264,13 +259,12 @@ validate_event(struct pmu_hw_events *hw_events,
struct perf_event *event)
{
struct arm_pmu *armpmu = to_arm_pmu(event->pmu);
struct hw_perf_event fake_event = event->hw;
struct pmu *leader_pmu = event->group_leader->pmu;
if (event->pmu != leader_pmu || event->state <= PERF_EVENT_STATE_OFF)
return 1;
return armpmu->get_event_idx(hw_events, &fake_event) >= 0;
return armpmu->get_event_idx(hw_events, event) >= 0;
}
static int
@ -316,7 +310,7 @@ static irqreturn_t armpmu_dispatch_irq(int irq, void *dev)
static void
armpmu_release_hardware(struct arm_pmu *armpmu)
{
armpmu->free_irq();
armpmu->free_irq(armpmu);
pm_runtime_put_sync(&armpmu->plat_device->dev);
}
@ -330,7 +324,7 @@ armpmu_reserve_hardware(struct arm_pmu *armpmu)
return -ENODEV;
pm_runtime_get_sync(&pmu_device->dev);
err = armpmu->request_irq(armpmu_dispatch_irq);
err = armpmu->request_irq(armpmu, armpmu_dispatch_irq);
if (err) {
armpmu_release_hardware(armpmu);
return err;
@ -465,13 +459,13 @@ static void armpmu_enable(struct pmu *pmu)
int enabled = bitmap_weight(hw_events->used_mask, armpmu->num_events);
if (enabled)
armpmu->start();
armpmu->start(armpmu);
}
static void armpmu_disable(struct pmu *pmu)
{
struct arm_pmu *armpmu = to_arm_pmu(pmu);
armpmu->stop();
armpmu->stop(armpmu);
}
#ifdef CONFIG_PM_RUNTIME

8
arch/arm/kernel/perf_event_cpu.c
View File

@ -71,7 +71,7 @@ static struct pmu_hw_events *cpu_pmu_get_cpu_events(void)
return &__get_cpu_var(cpu_hw_events);
}
static void cpu_pmu_free_irq(void)
static void cpu_pmu_free_irq(struct arm_pmu *cpu_pmu)
{
int i, irq, irqs;
struct platform_device *pmu_device = cpu_pmu->plat_device;
@ -87,7 +87,7 @@ static void cpu_pmu_free_irq(void)
}
}
static int cpu_pmu_request_irq(irq_handler_t handler)
static int cpu_pmu_request_irq(struct arm_pmu *cpu_pmu, irq_handler_t handler)
{
int i, err, irq, irqs;
struct platform_device *pmu_device = cpu_pmu->plat_device;
@ -148,7 +148,7 @@ static void __devinit cpu_pmu_init(struct arm_pmu *cpu_pmu)
/* Ensure the PMU has sane values out of reset. */
if (cpu_pmu && cpu_pmu->reset)
on_each_cpu(cpu_pmu->reset, NULL, 1);
on_each_cpu(cpu_pmu->reset, cpu_pmu, 1);
}
/*
@ -164,7 +164,7 @@ static int __cpuinit cpu_pmu_notify(struct notifier_block *b,
return NOTIFY_DONE;
if (cpu_pmu && cpu_pmu->reset)
cpu_pmu->reset(NULL);
cpu_pmu->reset(cpu_pmu);
return NOTIFY_OK;
}

54
arch/arm/kernel/perf_event_v6.c
View File

@ -401,9 +401,10 @@ armv6_pmcr_counter_has_overflowed(unsigned long pmcr,
return ret;
}
static inline u32
armv6pmu_read_counter(int counter)
static inline u32 armv6pmu_read_counter(struct perf_event *event)
{
struct hw_perf_event *hwc = &event->hw;
int counter = hwc->idx;
unsigned long value = 0;
if (ARMV6_CYCLE_COUNTER == counter)
@ -418,10 +419,11 @@ armv6pmu_read_counter(int counter)
return value;
}
static inline void
armv6pmu_write_counter(int counter,
u32 value)
static inline void armv6pmu_write_counter(struct perf_event *event, u32 value)
{
struct hw_perf_event *hwc = &event->hw;
int counter = hwc->idx;
if (ARMV6_CYCLE_COUNTER == counter)
asm volatile("mcr p15, 0, %0, c15, c12, 1" : : "r"(value));
else if (ARMV6_COUNTER0 == counter)
@ -432,12 +434,13 @@ armv6pmu_write_counter(int counter,
WARN_ONCE(1, "invalid counter number (%d)\n", counter);
}
static void
armv6pmu_enable_event(struct hw_perf_event *hwc,
int idx)
static void armv6pmu_enable_event(struct perf_event *event)
{
unsigned long val, mask, evt, flags;
struct arm_pmu *cpu_pmu = to_arm_pmu(event->pmu);
struct hw_perf_event *hwc = &event->hw;
struct pmu_hw_events *events = cpu_pmu->get_hw_events();
int idx = hwc->idx;
if (ARMV6_CYCLE_COUNTER == idx) {
mask = 0;
@ -473,7 +476,8 @@ armv6pmu_handle_irq(int irq_num,
{
unsigned long pmcr = armv6_pmcr_read();
struct perf_sample_data data;
struct pmu_hw_events *cpuc;
struct arm_pmu *cpu_pmu = (struct arm_pmu *)dev;
struct pmu_hw_events *cpuc = cpu_pmu->get_hw_events();
struct pt_regs *regs;
int idx;
@ -489,7 +493,6 @@ armv6pmu_handle_irq(int irq_num,
*/
armv6_pmcr_write(pmcr);
cpuc = &__get_cpu_var(cpu_hw_events);
for (idx = 0; idx < cpu_pmu->num_events; ++idx) {
struct perf_event *event = cpuc->events[idx];
struct hw_perf_event *hwc;
@ -506,13 +509,13 @@ armv6pmu_handle_irq(int irq_num,
continue;
hwc = &event->hw;
armpmu_event_update(event, hwc, idx);
armpmu_event_update(event);
perf_sample_data_init(&data, 0, hwc->last_period);
if (!armpmu_event_set_period(event, hwc, idx))
if (!armpmu_event_set_period(event))
continue;
if (perf_event_overflow(event, &data, regs))
cpu_pmu->disable(hwc, idx);
cpu_pmu->disable(event);
}
/*
@ -527,8 +530,7 @@ armv6pmu_handle_irq(int irq_num,
return IRQ_HANDLED;
}
static void
armv6pmu_start(void)
static void armv6pmu_start(struct arm_pmu *cpu_pmu)
{
unsigned long flags, val;
struct pmu_hw_events *events = cpu_pmu->get_hw_events();
@ -540,8 +542,7 @@ armv6pmu_start(void)
raw_spin_unlock_irqrestore(&events->pmu_lock, flags);
}
static void
armv6pmu_stop(void)
static void armv6pmu_stop(struct arm_pmu *cpu_pmu)
{
unsigned long flags, val;
struct pmu_hw_events *events = cpu_pmu->get_hw_events();
@ -555,10 +556,11 @@ armv6pmu_stop(void)
static int
armv6pmu_get_event_idx(struct pmu_hw_events *cpuc,
struct hw_perf_event *event)
struct perf_event *event)
{
struct hw_perf_event *hwc = &event->hw;
/* Always place a cycle counter into the cycle counter. */
if (ARMV6_PERFCTR_CPU_CYCLES == event->config_base) {
if (ARMV6_PERFCTR_CPU_CYCLES == hwc->config_base) {
if (test_and_set_bit(ARMV6_CYCLE_COUNTER, cpuc->used_mask))
return -EAGAIN;
@ -579,12 +581,13 @@ armv6pmu_get_event_idx(struct pmu_hw_events *cpuc,
}
}
static void
armv6pmu_disable_event(struct hw_perf_event *hwc,
int idx)
static void armv6pmu_disable_event(struct perf_event *event)
{
unsigned long val, mask, evt, flags;
struct arm_pmu *cpu_pmu = to_arm_pmu(event->pmu);
struct hw_perf_event *hwc = &event->hw;
struct pmu_hw_events *events = cpu_pmu->get_hw_events();
int idx = hwc->idx;
if (ARMV6_CYCLE_COUNTER == idx) {
mask = ARMV6_PMCR_CCOUNT_IEN;
@ -613,12 +616,13 @@ armv6pmu_disable_event(struct hw_perf_event *hwc,
raw_spin_unlock_irqrestore(&events->pmu_lock, flags);
}
static void
armv6mpcore_pmu_disable_event(struct hw_perf_event *hwc,
int idx)
static void armv6mpcore_pmu_disable_event(struct perf_event *event)
{
unsigned long val, mask, flags, evt = 0;
struct arm_pmu *cpu_pmu = to_arm_pmu(event->pmu);
struct hw_perf_event *hwc = &event->hw;
struct pmu_hw_events *events = cpu_pmu->get_hw_events();
int idx = hwc->idx;
if (ARMV6_CYCLE_COUNTER == idx) {
mask = ARMV6_PMCR_CCOUNT_IEN;

46
arch/arm/kernel/perf_event_v7.c
View File

@ -840,8 +840,10 @@ static inline int armv7_pmnc_select_counter(int idx)
return idx;
}
static inline u32 armv7pmu_read_counter(int idx)
static inline u32 armv7pmu_read_counter(struct perf_event *event)
{
struct hw_perf_event *hwc = &event->hw;
int idx = hwc->idx;
u32 value = 0;
if (!armv7_pmnc_counter_valid(idx))
@ -855,8 +857,11 @@ static inline u32 armv7pmu_read_counter(int idx)
return value;
}
static inline void armv7pmu_write_counter(int idx, u32 value)
static inline void armv7pmu_write_counter(struct perf_event *event, u32 value)
{
struct hw_perf_event *hwc = &event->hw;
int idx = hwc->idx;
if (!armv7_pmnc_counter_valid(idx))
pr_err("CPU%u writing wrong counter %d\n",
smp_processor_id(), idx);
@ -991,10 +996,13 @@ static void armv7_pmnc_dump_regs(void)
}
#endif
static void armv7pmu_enable_event(struct hw_perf_event *hwc, int idx)
static void armv7pmu_enable_event(struct perf_event *event)
{
unsigned long flags;
struct hw_perf_event *hwc = &event->hw;
struct arm_pmu *cpu_pmu = to_arm_pmu(event->pmu);
struct pmu_hw_events *events = cpu_pmu->get_hw_events();
int idx = hwc->idx;
/*
* Enable counter and interrupt, and set the counter to count
@ -1028,10 +1036,13 @@ static void armv7pmu_enable_event(struct hw_perf_event *hwc, int idx)
raw_spin_unlock_irqrestore(&events->pmu_lock, flags);
}
static void armv7pmu_disable_event(struct hw_perf_event *hwc, int idx)
static void armv7pmu_disable_event(struct perf_event *event)
{
unsigned long flags;
struct hw_perf_event *hwc = &event->hw;
struct arm_pmu *cpu_pmu = to_arm_pmu(event->pmu);
struct pmu_hw_events *events = cpu_pmu->get_hw_events();
int idx = hwc->idx;
/*
* Disable counter and interrupt
@ -1055,7 +1066,8 @@ static irqreturn_t armv7pmu_handle_irq(int irq_num, void *dev)
{
u32 pmnc;
struct perf_sample_data data;
struct pmu_hw_events *cpuc;
struct arm_pmu *cpu_pmu = (struct arm_pmu *)dev;
struct pmu_hw_events *cpuc = cpu_pmu->get_hw_events();
struct pt_regs *regs;
int idx;
@ -1075,7 +1087,6 @@ static irqreturn_t armv7pmu_handle_irq(int irq_num, void *dev)
*/
regs = get_irq_regs();
cpuc = &__get_cpu_var(cpu_hw_events);
for (idx = 0; idx < cpu_pmu->num_events; ++idx) {
struct perf_event *event = cpuc->events[idx];
struct hw_perf_event *hwc;
@ -1092,13 +1103,13 @@ static irqreturn_t armv7pmu_handle_irq(int irq_num, void *dev)
continue;
hwc = &event->hw;
armpmu_event_update(event, hwc, idx);
armpmu_event_update(event);
perf_sample_data_init(&data, 0, hwc->last_period);
if (!armpmu_event_set_period(event, hwc, idx))
if (!armpmu_event_set_period(event))
continue;
if (perf_event_overflow(event, &data, regs))
cpu_pmu->disable(hwc, idx);
cpu_pmu->disable(event);
}
/*
@ -1113,7 +1124,7 @@ static irqreturn_t armv7pmu_handle_irq(int irq_num, void *dev)
return IRQ_HANDLED;
}
static void armv7pmu_start(void)
static void armv7pmu_start(struct arm_pmu *cpu_pmu)
{
unsigned long flags;
struct pmu_hw_events *events = cpu_pmu->get_hw_events();
@ -1124,7 +1135,7 @@ static void armv7pmu_start(void)
raw_spin_unlock_irqrestore(&events->pmu_lock, flags);
}
static void armv7pmu_stop(void)
static void armv7pmu_stop(struct arm_pmu *cpu_pmu)
{
unsigned long flags;
struct pmu_hw_events *events = cpu_pmu->get_hw_events();
@ -1136,10 +1147,12 @@ static void armv7pmu_stop(void)
}
static int armv7pmu_get_event_idx(struct pmu_hw_events *cpuc,
struct hw_perf_event *event)
struct perf_event *event)
{
int idx;
unsigned long evtype = event->config_base & ARMV7_EVTYPE_EVENT;
struct arm_pmu *cpu_pmu = to_arm_pmu(event->pmu);
struct hw_perf_event *hwc = &event->hw;
unsigned long evtype = hwc->config_base & ARMV7_EVTYPE_EVENT;
/* Always place a cycle counter into the cycle counter. */
if (evtype == ARMV7_PERFCTR_CPU_CYCLES) {
@ -1190,11 +1203,14 @@ static int armv7pmu_set_event_filter(struct hw_perf_event *event,
static void armv7pmu_reset(void *info)
{
struct arm_pmu *cpu_pmu = (struct arm_pmu *)info;
u32 idx, nb_cnt = cpu_pmu->num_events;
/* The counter and interrupt enable registers are unknown at reset. */
for (idx = ARMV7_IDX_CYCLE_COUNTER; idx < nb_cnt; ++idx)
armv7pmu_disable_event(NULL, idx);
for (idx = ARMV7_IDX_CYCLE_COUNTER; idx < nb_cnt; ++idx) {
armv7_pmnc_disable_counter(idx);
armv7_pmnc_disable_intens(idx);
}
/* Initialize & Reset PMNC: C and P bits */
armv7_pmnc_write(ARMV7_PMNC_P | ARMV7_PMNC_C);

85
arch/arm/kernel/perf_event_xscale.c
View File

@ -224,7 +224,8 @@ xscale1pmu_handle_irq(int irq_num, void *dev)
{
unsigned long pmnc;
struct perf_sample_data data;
struct pmu_hw_events *cpuc;
struct arm_pmu *cpu_pmu = (struct arm_pmu *)dev;
struct pmu_hw_events *cpuc = cpu_pmu->get_hw_events();
struct pt_regs *regs;
int idx;
@ -248,7 +249,6 @@ xscale1pmu_handle_irq(int irq_num, void *dev)
regs = get_irq_regs();
cpuc = &__get_cpu_var(cpu_hw_events);
for (idx = 0; idx < cpu_pmu->num_events; ++idx) {
struct perf_event *event = cpuc->events[idx];
struct hw_perf_event *hwc;
@ -260,13 +260,13 @@ xscale1pmu_handle_irq(int irq_num, void *dev)
continue;
hwc = &event->hw;
armpmu_event_update(event, hwc, idx);
armpmu_event_update(event);
perf_sample_data_init(&data, 0, hwc->last_period);
if (!armpmu_event_set_period(event, hwc, idx))
if (!armpmu_event_set_period(event))
continue;
if (perf_event_overflow(event, &data, regs))
cpu_pmu->disable(hwc, idx);
cpu_pmu->disable(event);
}
irq_work_run();
@ -280,11 +280,13 @@ xscale1pmu_handle_irq(int irq_num, void *dev)
return IRQ_HANDLED;
}
static void
xscale1pmu_enable_event(struct hw_perf_event *hwc, int idx)
static void xscale1pmu_enable_event(struct perf_event *event)
{
unsigned long val, mask, evt, flags;
struct arm_pmu *cpu_pmu = to_arm_pmu(event->pmu);
struct hw_perf_event *hwc = &event->hw;
struct pmu_hw_events *events = cpu_pmu->get_hw_events();
int idx = hwc->idx;
switch (idx) {
case XSCALE_CYCLE_COUNTER:
@ -314,11 +316,13 @@ xscale1pmu_enable_event(struct hw_perf_event *hwc, int idx)
raw_spin_unlock_irqrestore(&events->pmu_lock, flags);
}
static void
xscale1pmu_disable_event(struct hw_perf_event *hwc, int idx)
static void xscale1pmu_disable_event(struct perf_event *event)
{
unsigned long val, mask, evt, flags;
struct arm_pmu *cpu_pmu = to_arm_pmu(event->pmu);
struct hw_perf_event *hwc = &event->hw;
struct pmu_hw_events *events = cpu_pmu->get_hw_events();
int idx = hwc->idx;
switch (idx) {
case XSCALE_CYCLE_COUNTER:
@ -348,9 +352,10 @@ xscale1pmu_disable_event(struct hw_perf_event *hwc, int idx)
static int
xscale1pmu_get_event_idx(struct pmu_hw_events *cpuc,
struct hw_perf_event *event)
struct perf_event *event)
{
if (XSCALE_PERFCTR_CCNT == event->config_base) {
struct hw_perf_event *hwc = &event->hw;
if (XSCALE_PERFCTR_CCNT == hwc->config_base) {
if (test_and_set_bit(XSCALE_CYCLE_COUNTER, cpuc->used_mask))
return -EAGAIN;
@ -366,8 +371,7 @@ xscale1pmu_get_event_idx(struct pmu_hw_events *cpuc,
}
}
static void
xscale1pmu_start(void)
static void xscale1pmu_start(struct arm_pmu *cpu_pmu)
{
unsigned long flags, val;
struct pmu_hw_events *events = cpu_pmu->get_hw_events();
@ -379,8 +383,7 @@ xscale1pmu_start(void)
raw_spin_unlock_irqrestore(&events->pmu_lock, flags);
}
static void
xscale1pmu_stop(void)
static void xscale1pmu_stop(struct arm_pmu *cpu_pmu)
{
unsigned long flags, val;
struct pmu_hw_events *events = cpu_pmu->get_hw_events();
@ -392,9 +395,10 @@ xscale1pmu_stop(void)
raw_spin_unlock_irqrestore(&events->pmu_lock, flags);
}
static inline u32
xscale1pmu_read_counter(int counter)
static inline u32 xscale1pmu_read_counter(struct perf_event *event)
{
struct hw_perf_event *hwc = &event->hw;
int counter = hwc->idx;
u32 val = 0;
switch (counter) {
@ -412,9 +416,11 @@ xscale1pmu_read_counter(int counter)
return val;
}
static inline void
xscale1pmu_write_counter(int counter, u32 val)
static inline void xscale1pmu_write_counter(struct perf_event *event, u32 val)
{
struct hw_perf_event *hwc = &event->hw;
int counter = hwc->idx;
switch (counter) {
case XSCALE_CYCLE_COUNTER:
asm volatile("mcr p14, 0, %0, c1, c0, 0" : : "r" (val));
@ -565,7 +571,8 @@ xscale2pmu_handle_irq(int irq_num, void *dev)
{
unsigned long pmnc, of_flags;
struct perf_sample_data data;
struct pmu_hw_events *cpuc;
struct arm_pmu *cpu_pmu = (struct arm_pmu *)dev;
struct pmu_hw_events *cpuc = cpu_pmu->get_hw_events();
struct pt_regs *regs;
int idx;
@ -583,7 +590,6 @@ xscale2pmu_handle_irq(int irq_num, void *dev)
regs = get_irq_regs();
cpuc = &__get_cpu_var(cpu_hw_events);
for (idx = 0; idx < cpu_pmu->num_events; ++idx) {
struct perf_event *event = cpuc->events[idx];
struct hw_perf_event *hwc;
@ -595,13 +601,13 @@ xscale2pmu_handle_irq(int irq_num, void *dev)
continue;
hwc = &event->hw;
armpmu_event_update(event, hwc, idx);
armpmu_event_update(event);
perf_sample_data_init(&data, 0, hwc->last_period);
if (!armpmu_event_set_period(event, hwc, idx))
if (!armpmu_event_set_period(event))
continue;
if (perf_event_overflow(event, &data, regs))
cpu_pmu->disable(hwc, idx);
cpu_pmu->disable(event);
}
irq_work_run();
@ -615,11 +621,13 @@ xscale2pmu_handle_irq(int irq_num, void *dev)
return IRQ_HANDLED;
}
static void
xscale2pmu_enable_event(struct hw_perf_event *hwc, int idx)
static void xscale2pmu_enable_event(struct perf_event *event)
{
unsigned long flags, ien, evtsel;
struct arm_pmu *cpu_pmu = to_arm_pmu(event->pmu);
struct hw_perf_event *hwc = &event->hw;
struct pmu_hw_events *events = cpu_pmu->get_hw_events();
int idx = hwc->idx;
ien = xscale2pmu_read_int_enable();
evtsel = xscale2pmu_read_event_select();
@ -659,11 +667,13 @@ xscale2pmu_enable_event(struct hw_perf_event *hwc, int idx)
raw_spin_unlock_irqrestore(&events->pmu_lock, flags);
}
static void
xscale2pmu_disable_event(struct hw_perf_event *hwc, int idx)
static void xscale2pmu_disable_event(struct perf_event *event)
{
unsigned long flags, ien, evtsel, of_flags;
struct arm_pmu *cpu_pmu = to_arm_pmu(event->pmu);
struct hw_perf_event *hwc = &event->hw;
struct pmu_hw_events *events = cpu_pmu->get_hw_events();
int idx = hwc->idx;
ien = xscale2pmu_read_int_enable();
evtsel = xscale2pmu_read_event_select();
@ -711,7 +721,7 @@ xscale2pmu_disable_event(struct hw_perf_event *hwc, int idx)
static int
xscale2pmu_get_event_idx(struct pmu_hw_events *cpuc,
struct hw_perf_event *event)
struct perf_event *event)
{
int idx = xscale1pmu_get_event_idx(cpuc, event);
if (idx >= 0)
@ -725,8 +735,7 @@ out:
return idx;
}
static void
xscale2pmu_start(void)
static void xscale2pmu_start(struct arm_pmu *cpu_pmu)
{
unsigned long flags, val;
struct pmu_hw_events *events = cpu_pmu->get_hw_events();
@ -738,8 +747,7 @@ xscale2pmu_start(void)
raw_spin_unlock_irqrestore(&events->pmu_lock, flags);
}
static void
xscale2pmu_stop(void)
static void xscale2pmu_stop(struct arm_pmu *cpu_pmu)
{
unsigned long flags, val;
struct pmu_hw_events *events = cpu_pmu->get_hw_events();
@ -751,9 +759,10 @@ xscale2pmu_stop(void)
raw_spin_unlock_irqrestore(&events->pmu_lock, flags);
}
static inline u32
xscale2pmu_read_counter(int counter)
static inline u32 xscale2pmu_read_counter(struct perf_event *event)
{
struct hw_perf_event *hwc = &event->hw;
int counter = hwc->idx;
u32 val = 0;
switch (counter) {
@ -777,9 +786,11 @@ xscale2pmu_read_counter(int counter)
return val;
}
static inline void
xscale2pmu_write_counter(int counter, u32 val)
static inline void xscale2pmu_write_counter(struct perf_event *event, u32 val)
{
struct hw_perf_event *hwc = &event->hw;
int counter = hwc->idx;
switch (counter) {
case XSCALE_CYCLE_COUNTER:
asm volatile("mcr p14, 0, %0, c1, c1, 0" : : "r" (val));