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Merge branch 'akpm' (patches from Andrew)

Browse Source 
Merge third patchbomb from Andrew Morton:

 - the rest of MM

 - scripts/gdb updates

 - ipc/ updates

 - lib/ updates

 - MAINTAINERS updates

 - various other misc things

* emailed patches from Andrew Morton <akpm@linux-foundation.org>: (67 commits)
  genalloc: rename of_get_named_gen_pool() to of_gen_pool_get()
  genalloc: rename dev_get_gen_pool() to gen_pool_get()
  x86: opt into HAVE_COPY_THREAD_TLS, for both 32-bit and 64-bit
  MAINTAINERS: add zpool
  MAINTAINERS: BCACHE: Kent Overstreet has changed email address
  MAINTAINERS: move Jens Osterkamp to CREDITS
  MAINTAINERS: remove unused nbd.h pattern
  MAINTAINERS: update brcm gpio filename pattern
  MAINTAINERS: update brcm dts pattern
  MAINTAINERS: update sound soc intel patterns
  MAINTAINERS: remove website for paride
  MAINTAINERS: update Emulex ocrdma email addresses
  bcache: use kvfree() in various places
  libcxgbi: use kvfree() in cxgbi_free_big_mem()
  target: use kvfree() in session alloc and free
  IB/ehca: use kvfree() in ipz_queue_{cd}tor()
  drm/nouveau/gem: use kvfree() in u_free()
  drm: use kvfree() in drm_free_large()
  cxgb4: use kvfree() in t4_free_mem()
  cxgb3: use kvfree() in cxgb_free_mem()
  ...
This commit is contained in:
Linus Torvalds 2015-07-01 17:47:51 -07:00
commit 2d01eedf1d
74 changed files with 894 additions and 339 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

4
CREDITS
View File

@ -2740,6 +2740,10 @@ S: C/ Mieses 20, 9-B
S: Valladolid 47009
S: Spain
N: Jens Osterkamp
E: jens@de.ibm.com
D: Maintainer of Spidernet network driver for Cell
N: Gadi Oxman
E: gadio@netvision.net.il
D: Original author and maintainer of IDE/ATAPI floppy/tape drivers

33
MAINTAINERS
View File

@ -2026,10 +2026,10 @@ S: Maintained
F: drivers/net/hamradio/baycom*
BCACHE (BLOCK LAYER CACHE)
M: Kent Overstreet <kmo@daterainc.com>
M: Kent Overstreet <kent.overstreet@gmail.com>
L: linux-bcache@vger.kernel.org
W: http://bcache.evilpiepirate.org
S: Maintained:
S: Maintained
F: drivers/md/bcache/
BDISP ST MEDIA DRIVER
@ -2280,7 +2280,7 @@ S: Maintained
F: arch/mips/bmips/*
F: arch/mips/include/asm/mach-bmips/*
F: arch/mips/kernel/*bmips*
F: arch/mips/boot/dts/bcm*.dts*
F: arch/mips/boot/dts/brcm/bcm*.dts*
F: drivers/irqchip/irq-bcm7*
F: drivers/irqchip/irq-brcmstb*
@ -2339,7 +2339,7 @@ M: Ray Jui <rjui@broadcom.com>
L: bcm-kernel-feedback-list@broadcom.com
S: Supported
F: drivers/gpio/gpio-bcm-kona.c
F: Documentation/devicetree/bindings/gpio/gpio-bcm-kona.txt
F: Documentation/devicetree/bindings/gpio/brcm,kona-gpio.txt
BROADCOM NVRAM DRIVER
M: Rafał Miłecki <zajec5@gmail.com>
@ -5285,11 +5285,10 @@ INTEL ASoC BDW/HSW DRIVERS
M: Jie Yang <yang.jie@linux.intel.com>
L: alsa-devel@alsa-project.org (moderated for non-subscribers)
S: Supported
F: sound/soc/intel/sst-haswell*
F: sound/soc/intel/sst-dsp*
F: sound/soc/intel/sst-firmware.c
F: sound/soc/intel/broadwell.c
F: sound/soc/intel/haswell.c
F: sound/soc/intel/common/sst-dsp*
F: sound/soc/intel/common/sst-firmware.c
F: sound/soc/intel/boards/broadwell.c
F: sound/soc/intel/haswell/
INTEL C600 SERIES SAS CONTROLLER DRIVER
M: Intel SCU Linux support <intel-linux-scu@intel.com>
@ -7019,7 +7018,6 @@ L: nbd-general@lists.sourceforge.net
T: git git://git.pengutronix.de/git/mpa/linux-nbd.git
F: Documentation/blockdev/nbd.txt
F: drivers/block/nbd.c
F: include/linux/nbd.h
F: include/uapi/linux/nbd.h
NETWORK DROP MONITOR
@ -7647,7 +7645,6 @@ F: arch/*/include/asm/paravirt.h
PARIDE DRIVERS FOR PARALLEL PORT IDE DEVICES
M: Tim Waugh <tim@cyberelk.net>
L: linux-parport@lists.infradead.org (subscribers-only)
W: http://www.torque.net/linux-pp.html
S: Maintained
F: Documentation/blockdev/paride.txt
F: drivers/block/paride/
@ -9091,9 +9088,9 @@ S: Supported
F: drivers/net/ethernet/emulex/benet/
EMULEX ONECONNECT ROCE DRIVER
M: Selvin Xavier <selvin.xavier@emulex.com>
M: Devesh Sharma <devesh.sharma@emulex.com>
M: Mitesh Ahuja <mitesh.ahuja@emulex.com>
M: Selvin Xavier <selvin.xavier@avagotech.com>
M: Devesh Sharma <devesh.sharma@avagotech.com>
M: Mitesh Ahuja <mitesh.ahuja@avagotech.com>
L: linux-rdma@vger.kernel.org
W: http://www.emulex.com
S: Supported
@ -9593,7 +9590,6 @@ F: include/uapi/linux/spi/
SPIDERNET NETWORK DRIVER for CELL
M: Ishizaki Kou <kou.ishizaki@toshiba.co.jp>
M: Jens Osterkamp <jens@de.ibm.com>
L: netdev@vger.kernel.org
S: Supported
F: Documentation/networking/spider_net.txt
@ -11354,6 +11350,13 @@ L: zd1211-devs@lists.sourceforge.net (subscribers-only)
S: Maintained
F: drivers/net/wireless/zd1211rw/
ZPOOL COMPRESSED PAGE STORAGE API
M: Dan Streetman <ddstreet@ieee.org>
L: linux-mm@kvack.org
S: Maintained
F: mm/zpool.c
F: include/linux/zpool.h
ZR36067 VIDEO FOR LINUX DRIVER
L: mjpeg-users@lists.sourceforge.net
L: linux-media@vger.kernel.org

12
arch/arc/include/asm/dma-mapping.h
View File

@ -157,22 +157,24 @@ dma_sync_single_range_for_device(struct device *dev, dma_addr_t dma_handle,
}
static inline void
dma_sync_sg_for_cpu(struct device *dev, struct scatterlist *sg, int nelems,
dma_sync_sg_for_cpu(struct device *dev, struct scatterlist *sglist, int nelems,
enum dma_data_direction dir)
{
int i;
struct scatterlist *sg;
for (i = 0; i < nelems; i++, sg++)
for_each_sg(sglist, sg, nelems, i)
_dma_cache_sync((unsigned int)sg_virt(sg), sg->length, dir);
}
static inline void
dma_sync_sg_for_device(struct device *dev, struct scatterlist *sg, int nelems,
enum dma_data_direction dir)
dma_sync_sg_for_device(struct device *dev, struct scatterlist *sglist,
int nelems, enum dma_data_direction dir)
{
int i;
struct scatterlist *sg;
for (i = 0; i < nelems; i++, sg++)
for_each_sg(sglist, sg, nelems, i)
_dma_cache_sync((unsigned int)sg_virt(sg), sg->length, dir);
}

2
arch/arm/mach-at91/pm.c
View File

@ -369,7 +369,7 @@ static void __init at91_pm_sram_init(void)
return;
}
sram_pool = dev_get_gen_pool(&pdev->dev);
sram_pool = gen_pool_get(&pdev->dev);
if (!sram_pool) {
pr_warn("%s: sram pool unavailable!\n", __func__);
return;

2
arch/arm/mach-imx/pm-imx5.c
View File

@ -297,7 +297,7 @@ static int __init imx_suspend_alloc_ocram(
goto put_node;
}
ocram_pool = dev_get_gen_pool(&pdev->dev);
ocram_pool = gen_pool_get(&pdev->dev);
if (!ocram_pool) {
pr_warn("%s: ocram pool unavailable!\n", __func__);
ret = -ENODEV;

2
arch/arm/mach-imx/pm-imx6.c
View File

@ -451,7 +451,7 @@ static int __init imx6q_suspend_init(const struct imx6_pm_socdata *socdata)
goto put_node;
}
ocram_pool = dev_get_gen_pool(&pdev->dev);
ocram_pool = gen_pool_get(&pdev->dev);
if (!ocram_pool) {
pr_warn("%s: ocram pool unavailable!\n", __func__);
ret = -ENODEV;

2
arch/arm/mach-socfpga/pm.c
View File

@ -56,7 +56,7 @@ static int socfpga_setup_ocram_self_refresh(void)
goto put_node;
}
ocram_pool = dev_get_gen_pool(&pdev->dev);
ocram_pool = gen_pool_get(&pdev->dev);
if (!ocram_pool) {
pr_warn("%s: ocram pool unavailable!\n", __func__);
ret = -ENODEV;

19
arch/ia64/mm/numa.c
View File

@ -58,27 +58,22 @@ paddr_to_nid(unsigned long paddr)
* SPARSEMEM to allocate the SPARSEMEM sectionmap on the NUMA node where
* the section resides.
*/
int __meminit __early_pfn_to_nid(unsigned long pfn)
int __meminit __early_pfn_to_nid(unsigned long pfn,
struct mminit_pfnnid_cache *state)
{
int i, section = pfn >> PFN_SECTION_SHIFT, ssec, esec;
/*
* NOTE: The following SMP-unsafe globals are only used early in boot
* when the kernel is running single-threaded.
*/
static int __meminitdata last_ssec, last_esec;
static int __meminitdata last_nid;
if (section >= last_ssec && section < last_esec)
return last_nid;
if (section >= state->last_start && section < state->last_end)
return state->last_nid;
for (i = 0; i < num_node_memblks; i++) {
ssec = node_memblk[i].start_paddr >> PA_SECTION_SHIFT;
esec = (node_memblk[i].start_paddr + node_memblk[i].size +
((1L << PA_SECTION_SHIFT) - 1)) >> PA_SECTION_SHIFT;
if (section >= ssec && section < esec) {
last_ssec = ssec;
last_esec = esec;
last_nid = node_memblk[i].nid;
state->last_start = ssec;
state->last_end = esec;
state->last_nid = node_memblk[i].nid;
return node_memblk[i].nid;
}
}

4
arch/unicore32/kernel/fpu-ucf64.c
View File

@ -90,8 +90,8 @@ void ucf64_exchandler(u32 inst, u32 fpexc, struct pt_regs *regs)
tmp &= ~(FPSCR_CON);
exc &= ~(FPSCR_CMPINSTR_BIT | FPSCR_CON);
} else {
pr_debug(KERN_ERR "UniCore-F64 Error: unhandled exceptions\n");
pr_debug(KERN_ERR "UniCore-F64 FPSCR 0x%08x INST 0x%08x\n",
pr_debug("UniCore-F64 Error: unhandled exceptions\n");
pr_debug("UniCore-F64 FPSCR 0x%08x INST 0x%08x\n",
cff(FPSCR), inst);
ucf64_raise_sigfpe(0, regs);

2
arch/x86/Kconfig
View File

@ -34,6 +34,7 @@ config X86
select ARCH_MIGHT_HAVE_PC_PARPORT
select ARCH_MIGHT_HAVE_PC_SERIO
select ARCH_SUPPORTS_ATOMIC_RMW
select ARCH_SUPPORTS_DEFERRED_STRUCT_PAGE_INIT
select ARCH_SUPPORTS_INT128 if X86_64
select ARCH_SUPPORTS_NUMA_BALANCING if X86_64
select ARCH_USE_BUILTIN_BSWAP
@ -87,6 +88,7 @@ config X86
select HAVE_CMPXCHG_DOUBLE
select HAVE_CMPXCHG_LOCAL
select HAVE_CONTEXT_TRACKING if X86_64
select HAVE_COPY_THREAD_TLS
select HAVE_C_RECORDMCOUNT
select HAVE_DEBUG_KMEMLEAK
select HAVE_DEBUG_STACKOVERFLOW

11
arch/x86/kernel/kexec-bzimage64.c
View File

@ -72,15 +72,16 @@ static int setup_cmdline(struct kimage *image, struct boot_params *params,
unsigned long cmdline_len)
{
char *cmdline_ptr = ((char *)params) + cmdline_offset;
unsigned long cmdline_ptr_phys, len;
unsigned long cmdline_ptr_phys, len = 0;
uint32_t cmdline_low_32, cmdline_ext_32;
memcpy(cmdline_ptr, cmdline, cmdline_len);
if (image->type == KEXEC_TYPE_CRASH) {
len = sprintf(cmdline_ptr + cmdline_len - 1,
" elfcorehdr=0x%lx", image->arch.elf_load_addr);
cmdline_len += len;
len = sprintf(cmdline_ptr,
"elfcorehdr=0x%lx ", image->arch.elf_load_addr);
}
memcpy(cmdline_ptr + len, cmdline, cmdline_len);
cmdline_len += len;
cmdline_ptr[cmdline_len - 1] = '\0';
pr_debug("Final command line is: %s\n", cmdline_ptr);

6
arch/x86/kernel/process_32.c
View File

@ -128,8 +128,8 @@ void release_thread(struct task_struct *dead_task)
release_vm86_irqs(dead_task);
}
int copy_thread(unsigned long clone_flags, unsigned long sp,
unsigned long arg, struct task_struct *p)
int copy_thread_tls(unsigned long clone_flags, unsigned long sp,
unsigned long arg, struct task_struct *p, unsigned long tls)
{
struct pt_regs *childregs = task_pt_regs(p);
struct task_struct *tsk;
@ -184,7 +184,7 @@ int copy_thread(unsigned long clone_flags, unsigned long sp,
*/
if (clone_flags & CLONE_SETTLS)
err = do_set_thread_area(p, -1,
(struct user_desc __user *)childregs->si, 0);
(struct user_desc __user *)tls, 0);
if (err && p->thread.io_bitmap_ptr) {
kfree(p->thread.io_bitmap_ptr);

8
arch/x86/kernel/process_64.c
View File

@ -150,8 +150,8 @@ static inline u32 read_32bit_tls(struct task_struct *t, int tls)
return get_desc_base(&t->thread.tls_array[tls]);
}
int copy_thread(unsigned long clone_flags, unsigned long sp,
unsigned long arg, struct task_struct *p)
int copy_thread_tls(unsigned long clone_flags, unsigned long sp,
unsigned long arg, struct task_struct *p, unsigned long tls)
{
int err;
struct pt_regs *childregs;
@ -207,10 +207,10 @@ int copy_thread(unsigned long clone_flags, unsigned long sp,
#ifdef CONFIG_IA32_EMULATION
if (is_ia32_task())
err = do_set_thread_area(p, -1,
(struct user_desc __user *)childregs->si, 0);
(struct user_desc __user *)tls, 0);
else
#endif
err = do_arch_prctl(p, ARCH_SET_FS, childregs->r8);
err = do_arch_prctl(p, ARCH_SET_FS, tls);
if (err)
goto out;
}

6
drivers/base/node.c
View File

@ -359,12 +359,16 @@ int unregister_cpu_under_node(unsigned int cpu, unsigned int nid)
#ifdef CONFIG_MEMORY_HOTPLUG_SPARSE
#define page_initialized(page) (page->lru.next)
static int get_nid_for_pfn(unsigned long pfn)
static int __init_refok get_nid_for_pfn(unsigned long pfn)
{
struct page *page;
if (!pfn_valid_within(pfn))
return -1;
#ifdef CONFIG_DEFERRED_STRUCT_PAGE_INIT
if (system_state == SYSTEM_BOOTING)
return early_pfn_to_nid(pfn);
#endif
page = pfn_to_page(pfn);
if (!page_initialized(page))
return -1;

5
drivers/crypto/marvell/cesa.c
View File

@ -321,9 +321,8 @@ static int mv_cesa_get_sram(struct platform_device *pdev, int idx)
const char *res_name = "sram";
struct resource *res;
engine->pool = of_get_named_gen_pool(cesa->dev->of_node,
"marvell,crypto-srams",
idx);
engine->pool = of_gen_pool_get(cesa->dev->of_node,
"marvell,crypto-srams", idx);
if (engine->pool) {
engine->sram = gen_pool_dma_alloc(engine->pool,
cesa->sram_size,

2
drivers/dma/mmp_tdma.c
View File

@ -657,7 +657,7 @@ static int mmp_tdma_probe(struct platform_device *pdev)
INIT_LIST_HEAD(&tdev->device.channels);
if (pdev->dev.of_node)
pool = of_get_named_gen_pool(pdev->dev.of_node, "asram", 0);
pool = of_gen_pool_get(pdev->dev.of_node, "asram", 0);
else
pool = sram_get_gpool("asram");
if (!pool) {

5
drivers/gpu/drm/nouveau/nouveau_gem.c
View File

@ -555,10 +555,7 @@ nouveau_gem_pushbuf_validate(struct nouveau_channel *chan,
static inline void
u_free(void *addr)
{
if (!is_vmalloc_addr(addr))
kfree(addr);
else
vfree(addr);
kvfree(addr);
}
static inline void *

10
drivers/infiniband/hw/ehca/ipz_pt_fn.c
View File

@ -245,10 +245,7 @@ int ipz_queue_ctor(struct ehca_pd *pd, struct ipz_queue *queue,
ipz_queue_ctor_exit0:
ehca_gen_err("Couldn't alloc pages queue=%p "
"nr_of_pages=%x", queue, nr_of_pages);
if (is_vmalloc_addr(queue->queue_pages))
vfree(queue->queue_pages);
else
kfree(queue->queue_pages);
kvfree(queue->queue_pages);
return 0;
}
@ -270,10 +267,7 @@ int ipz_queue_dtor(struct ehca_pd *pd, struct ipz_queue *queue)
free_page((unsigned long)queue->queue_pages[i]);
}
if (is_vmalloc_addr(queue->queue_pages))
vfree(queue->queue_pages);
else
kfree(queue->queue_pages);
kvfree(queue->queue_pages);
return 1;
}

2
drivers/md/bcache/journal.c
View File

@ -157,7 +157,7 @@ int bch_journal_read(struct cache_set *c, struct list_head *list)
for_each_cache(ca, c, iter) {
struct journal_device *ja = &ca->journal;
unsigned long bitmap[SB_JOURNAL_BUCKETS / BITS_PER_LONG];
DECLARE_BITMAP(bitmap, SB_JOURNAL_BUCKETS);
unsigned i, l, r, m;
uint64_t seq;

10
drivers/md/bcache/super.c
View File

@ -760,14 +760,8 @@ static void bcache_device_free(struct bcache_device *d)
bio_split_pool_free(&d->bio_split_hook);
if (d->bio_split)
bioset_free(d->bio_split);
if (is_vmalloc_addr(d->full_dirty_stripes))
vfree(d->full_dirty_stripes);
else
kfree(d->full_dirty_stripes);
if (is_vmalloc_addr(d->stripe_sectors_dirty))
vfree(d->stripe_sectors_dirty);
else
kfree(d->stripe_sectors_dirty);
kvfree(d->full_dirty_stripes);
kvfree(d->stripe_sectors_dirty);
closure_debug_destroy(&d->cl);
}

10
drivers/md/bcache/util.h
View File

@ -52,10 +52,7 @@ struct closure;
#define free_heap(heap) \
do { \
if (is_vmalloc_addr((heap)->data)) \
vfree((heap)->data); \
else \
kfree((heap)->data); \
kvfree((heap)->data); \
(heap)->data = NULL; \
} while (0)
@ -163,10 +160,7 @@ do { \
#define free_fifo(fifo) \
do { \
if (is_vmalloc_addr((fifo)->data)) \
vfree((fifo)->data); \
else \
kfree((fifo)->data); \
kvfree((fifo)->data); \
(fifo)->data = NULL; \
} while (0)

4
drivers/media/platform/coda/coda-common.c
View File

@ -2155,9 +2155,9 @@ static int coda_probe(struct platform_device *pdev)
}
/* Get IRAM pool from device tree or platform data */
pool = of_get_named_gen_pool(np, "iram", 0);
pool = of_gen_pool_get(np, "iram", 0);
if (!pool && pdata)
pool = dev_get_gen_pool(pdata->iram_dev);
pool = gen_pool_get(pdata->iram_dev);
if (!pool) {
dev_err(&pdev->dev, "iram pool not available\n");
return -ENOMEM;

12
drivers/memstick/host/jmb38x_ms.c
View File

@ -419,10 +419,10 @@ static int jmb38x_ms_issue_cmd(struct memstick_host *msh)
}
if (host->cmd_flags & DMA_DATA) {
if (1 != pci_map_sg(host->chip->pdev, &host->req->sg, 1,
if (1 != dma_map_sg(&host->chip->pdev->dev, &host->req->sg, 1,
host->req->data_dir == READ
? PCI_DMA_FROMDEVICE
: PCI_DMA_TODEVICE)) {
? DMA_FROM_DEVICE
: DMA_TO_DEVICE)) {
host->req->error = -ENOMEM;
return host->req->error;
}
@ -487,9 +487,9 @@ static void jmb38x_ms_complete_cmd(struct memstick_host *msh, int last)
writel(0, host->addr + DMA_CONTROL);
if (host->cmd_flags & DMA_DATA) {
pci_unmap_sg(host->chip->pdev, &host->req->sg, 1,
dma_unmap_sg(&host->chip->pdev->dev, &host->req->sg, 1,
host->req->data_dir == READ
? PCI_DMA_FROMDEVICE : PCI_DMA_TODEVICE);
? DMA_FROM_DEVICE : DMA_TO_DEVICE);
} else {
t_val = readl(host->addr + INT_STATUS_ENABLE);
if (host->req->data_dir == READ)
@ -925,7 +925,7 @@ static int jmb38x_ms_probe(struct pci_dev *pdev,
int pci_dev_busy = 0;
int rc, cnt;
rc = pci_set_dma_mask(pdev, DMA_BIT_MASK(32));
rc = dma_set_mask(&pdev->dev, DMA_BIT_MASK(32));
if (rc)
return rc;

10
drivers/memstick/host/r592.c
View File

@ -754,7 +754,7 @@ static int r592_probe(struct pci_dev *pdev, const struct pci_device_id *id)
goto error2;
pci_set_master(pdev);
error = pci_set_dma_mask(pdev, DMA_BIT_MASK(32));
error = dma_set_mask(&pdev->dev, DMA_BIT_MASK(32));
if (error)
goto error3;
@ -787,8 +787,8 @@ static int r592_probe(struct pci_dev *pdev, const struct pci_device_id *id)
}
/* This is just a precation, so don't fail */
dev->dummy_dma_page = pci_alloc_consistent(pdev, PAGE_SIZE,
&dev->dummy_dma_page_physical_address);
dev->dummy_dma_page = dma_alloc_coherent(&pdev->dev, PAGE_SIZE,
&dev->dummy_dma_page_physical_address, GFP_KERNEL);
r592_stop_dma(dev , 0);
if (request_irq(dev->irq, &r592_irq, IRQF_SHARED,
@ -805,7 +805,7 @@ static int r592_probe(struct pci_dev *pdev, const struct pci_device_id *id)
free_irq(dev->irq, dev);
error6:
if (dev->dummy_dma_page)
pci_free_consistent(pdev, PAGE_SIZE, dev->dummy_dma_page,
dma_free_coherent(&pdev->dev, PAGE_SIZE, dev->dummy_dma_page,
dev->dummy_dma_page_physical_address);
kthread_stop(dev->io_thread);
@ -845,7 +845,7 @@ static void r592_remove(struct pci_dev *pdev)
memstick_free_host(dev->host);
if (dev->dummy_dma_page)
pci_free_consistent(pdev, PAGE_SIZE, dev->dummy_dma_page,
dma_free_coherent(&pdev->dev, PAGE_SIZE, dev->dummy_dma_page,
dev->dummy_dma_page_physical_address);
}

5
drivers/net/ethernet/chelsio/cxgb3/cxgb3_offload.c
View File

@ -1169,10 +1169,7 @@ void *cxgb_alloc_mem(unsigned long size)
*/
void cxgb_free_mem(void *addr)
{
if (is_vmalloc_addr(addr))
vfree(addr);
else
kfree(addr);
kvfree(addr);
}
/*

5
drivers/net/ethernet/chelsio/cxgb4/cxgb4_main.c
View File

@ -1150,10 +1150,7 @@ void *t4_alloc_mem(size_t size)
*/
void t4_free_mem(void *addr)
{
if (is_vmalloc_addr(addr))
vfree(addr);
else
kfree(addr);
kvfree(addr);
}
/* Send a Work Request to write the filter at a specified index. We construct

5
drivers/scsi/cxgbi/libcxgbi.h
View File

@ -685,10 +685,7 @@ static inline void *cxgbi_alloc_big_mem(unsigned int size,
static inline void cxgbi_free_big_mem(void *addr)
{
if (is_vmalloc_addr(addr))
vfree(addr);
else
kfree(addr);
kvfree(addr);
}
static inline void cxgbi_set_iscsi_ipv4(struct cxgbi_hba *chba, __be32 ipaddr)

12
drivers/scsi/scsi_debug.c
View File

@ -2363,17 +2363,13 @@ do_device_access(struct scsi_cmnd *scmd, u64 lba, u32 num, bool do_write)
u64 block, rest = 0;
struct scsi_data_buffer *sdb;
enum dma_data_direction dir;
size_t (*func)(struct scatterlist *, unsigned int, void *, size_t,
off_t);
if (do_write) {
sdb = scsi_out(scmd);
dir = DMA_TO_DEVICE;
func = sg_pcopy_to_buffer;
} else {
sdb = scsi_in(scmd);
dir = DMA_FROM_DEVICE;
func = sg_pcopy_from_buffer;
}
if (!sdb->length)
@ -2385,16 +2381,16 @@ do_device_access(struct scsi_cmnd *scmd, u64 lba, u32 num, bool do_write)
if (block + num > sdebug_store_sectors)
rest = block + num - sdebug_store_sectors;
ret = func(sdb->table.sgl, sdb->table.nents,
ret = sg_copy_buffer(sdb->table.sgl, sdb->table.nents,
fake_storep + (block * scsi_debug_sector_size),
(num - rest) * scsi_debug_sector_size, 0);
(num - rest) * scsi_debug_sector_size, 0, do_write);
if (ret != (num - rest) * scsi_debug_sector_size)
return ret;
if (rest) {
ret += func(sdb->table.sgl, sdb->table.nents,
ret += sg_copy_buffer(sdb->table.sgl, sdb->table.nents,
fake_storep, rest * scsi_debug_sector_size,
(num - rest) * scsi_debug_sector_size);
(num - rest) * scsi_debug_sector_size, do_write);
}
return ret;

10
drivers/target/target_core_transport.c
View File

@ -279,10 +279,7 @@ int transport_alloc_session_tags(struct se_session *se_sess,
if (rc < 0) {
pr_err("Unable to init se_sess->sess_tag_pool,"
" tag_num: %u\n", tag_num);
if (is_vmalloc_addr(se_sess->sess_cmd_map))
vfree(se_sess->sess_cmd_map);
else
kfree(se_sess->sess_cmd_map);
kvfree(se_sess->sess_cmd_map);
se_sess->sess_cmd_map = NULL;
return -ENOMEM;
}
@ -489,10 +486,7 @@ void transport_free_session(struct se_session *se_sess)
{
if (se_sess->sess_cmd_map) {
percpu_ida_destroy(&se_sess->sess_tag_pool);
if (is_vmalloc_addr(se_sess->sess_cmd_map))
vfree(se_sess->sess_cmd_map);
else
kfree(se_sess->sess_cmd_map);
kvfree(se_sess->sess_cmd_map);
}
kmem_cache_free(se_sess_cache, se_sess);
}

2
fs/adfs/super.c
View File

@ -242,7 +242,7 @@ static struct kmem_cache *adfs_inode_cachep;
static struct inode *adfs_alloc_inode(struct super_block *sb)
{
struct adfs_inode_info *ei;
ei = (struct adfs_inode_info *)kmem_cache_alloc(adfs_inode_cachep, GFP_KERNEL);
ei = kmem_cache_alloc(adfs_inode_cachep, GFP_KERNEL);
if (!ei)
return NULL;
return &ei->vfs_inode;

2
fs/affs/amigaffs.c
View File

@ -140,7 +140,7 @@ affs_remove_link(struct dentry *dentry)
{
struct inode *dir, *inode = d_inode(dentry);
struct super_block *sb = inode->i_sb;
struct buffer_head *bh = NULL, *link_bh = NULL;
struct buffer_head *bh, *link_bh = NULL;
u32 link_ino, ino;
int retval;

2
fs/affs/inode.c
View File

@ -346,7 +346,7 @@ affs_add_entry(struct inode *dir, struct inode *inode, struct dentry *dentry, s3
{
struct super_block *sb = dir->i_sb;
struct buffer_head *inode_bh = NULL;
struct buffer_head *bh = NULL;
struct buffer_head *bh;
u32 block = 0;
int retval;

4
fs/affs/symlink.c
View File

@ -16,14 +16,12 @@ static int affs_symlink_readpage(struct file *file, struct page *page)
struct inode *inode = page->mapping->host;
char *link = kmap(page);
struct slink_front *lf;
int err;
int i, j;
char c;
char lc;
pr_debug("follow_link(ino=%lu)\n", inode->i_ino);
err = -EIO;
bh = affs_bread(inode->i_sb, inode->i_ino);
if (!bh)
goto fail;
@ -66,7 +64,7 @@ static int affs_symlink_readpage(struct file *file, struct page *page)
SetPageError(page);
kunmap(page);
unlock_page(page);
return err;
return -EIO;
}
const struct address_space_operations affs_symlink_aops = {

31
fs/devpts/inode.c
View File

@ -142,6 +142,8 @@ static inline struct super_block *pts_sb_from_inode(struct inode *inode)
if (inode->i_sb->s_magic == DEVPTS_SUPER_MAGIC)
return inode->i_sb;
#endif
if (!devpts_mnt)
return NULL;
return devpts_mnt->mnt_sb;
}
@ -525,10 +527,14 @@ static struct file_system_type devpts_fs_type = {
int devpts_new_index(struct inode *ptmx_inode)
{
struct super_block *sb = pts_sb_from_inode(ptmx_inode);
struct pts_fs_info *fsi = DEVPTS_SB(sb);
struct pts_fs_info *fsi;
int index;
int ida_ret;
if (!sb)
return -ENODEV;
fsi = DEVPTS_SB(sb);
retry:
if (!ida_pre_get(&fsi->allocated_ptys, GFP_KERNEL))
return -ENOMEM;
@ -584,11 +590,18 @@ struct inode *devpts_pty_new(struct inode *ptmx_inode, dev_t device, int index,
struct dentry *dentry;
struct super_block *sb = pts_sb_from_inode(ptmx_inode);
struct inode *inode;
struct dentry *root = sb->s_root;
struct pts_fs_info *fsi = DEVPTS_SB(sb);
struct pts_mount_opts *opts = &fsi->mount_opts;
struct dentry *root;
struct pts_fs_info *fsi;
struct pts_mount_opts *opts;
char s[12];
if (!sb)
return ERR_PTR(-ENODEV);
root = sb->s_root;
fsi = DEVPTS_SB(sb);
opts = &fsi->mount_opts;
inode = new_inode(sb);
if (!inode)
return ERR_PTR(-ENOMEM);
@ -676,12 +689,16 @@ static int __init init_devpts_fs(void)
struct ctl_table_header *table;
if (!err) {
struct vfsmount *mnt;
table = register_sysctl_table(pty_root_table);
devpts_mnt = kern_mount(&devpts_fs_type);
if (IS_ERR(devpts_mnt)) {
err = PTR_ERR(devpts_mnt);
mnt = kern_mount(&devpts_fs_type);
if (IS_ERR(mnt)) {
err = PTR_ERR(mnt);
unregister_filesystem(&devpts_fs_type);
unregister_sysctl_table(table);
} else {
devpts_mnt = mnt;
}
}
return err;

3
fs/mount.h
View File

@ -118,7 +118,6 @@ static inline void unlock_mount_hash(void)
}
struct proc_mounts {
struct seq_file m;
struct mnt_namespace *ns;
struct path root;
int (*show)(struct seq_file *, struct vfsmount *);
@ -127,8 +126,6 @@ struct proc_mounts {
loff_t cached_index;
};
#define proc_mounts(p) (container_of((p), struct proc_mounts, m))
extern const struct seq_operations mounts_op;
extern bool __is_local_mountpoint(struct dentry *dentry);

6
fs/namespace.c
View File

@ -1226,7 +1226,7 @@ EXPORT_SYMBOL(replace_mount_options);
/* iterator; we want it to have access to namespace_sem, thus here... */
static void *m_start(struct seq_file *m, loff_t *pos)
{
struct proc_mounts *p = proc_mounts(m);
struct proc_mounts *p = m->private;
down_read(&namespace_sem);
if (p->cached_event == p->ns->event) {
@ -1247,7 +1247,7 @@ static void *m_start(struct seq_file *m, loff_t *pos)
static void *m_next(struct seq_file *m, void *v, loff_t *pos)
{
struct proc_mounts *p = proc_mounts(m);
struct proc_mounts *p = m->private;
p->cached_mount = seq_list_next(v, &p->ns->list, pos);
p->cached_index = *pos;
@ -1261,7 +1261,7 @@ static void m_stop(struct seq_file *m, void *v)
static int m_show(struct seq_file *m, void *v)
{
struct proc_mounts *p = proc_mounts(m);
struct proc_mounts *p = m->private;
struct mount *r = list_entry(v, struct mount, mnt_list);
return p->show(m, &r->mnt);
}

34
fs/proc_namespace.c
View File

@ -17,7 +17,8 @@
static unsigned mounts_poll(struct file *file, poll_table *wait)
{
struct proc_mounts *p = proc_mounts(file->private_data);
struct seq_file *m = file->private_data;
struct proc_mounts *p = m->private;
struct mnt_namespace *ns = p->ns;
unsigned res = POLLIN | POLLRDNORM;
int event;
@ -25,8 +26,8 @@ static unsigned mounts_poll(struct file *file, poll_table *wait)
poll_wait(file, &p->ns->poll, wait);
event = ACCESS_ONCE(ns->event);
if (p->m.poll_event != event) {
p->m.poll_event = event;
if (m->poll_event != event) {
m->poll_event = event;
res |= POLLERR | POLLPRI;
}
@ -92,7 +93,7 @@ static void show_type(struct seq_file *m, struct super_block *sb)
static int show_vfsmnt(struct seq_file *m, struct vfsmount *mnt)
{
struct proc_mounts *p = proc_mounts(m);
struct proc_mounts *p = m->private;
struct mount *r = real_mount(mnt);
int err = 0;
struct path mnt_path = { .dentry = mnt->mnt_root, .mnt = mnt };
@ -126,7 +127,7 @@ static int show_vfsmnt(struct seq_file *m, struct vfsmount *mnt)
static int show_mountinfo(struct seq_file *m, struct vfsmount *mnt)
{
struct proc_mounts *p = proc_mounts(m);
struct proc_mounts *p = m->private;
struct mount *r = real_mount(mnt);
struct super_block *sb = mnt->mnt_sb;
struct path mnt_path = { .dentry = mnt->mnt_root, .mnt = mnt };
@ -186,7 +187,7 @@ static int show_mountinfo(struct seq_file *m, struct vfsmount *mnt)
static int show_vfsstat(struct seq_file *m, struct vfsmount *mnt)
{
struct proc_mounts *p = proc_mounts(m);
struct proc_mounts *p = m->private;
struct mount *r = real_mount(mnt);
struct path mnt_path = { .dentry = mnt->mnt_root, .mnt = mnt };
struct super_block *sb = mnt_path.dentry->d_sb;
@ -236,6 +237,7 @@ static int mounts_open_common(struct inode *inode, struct file *file,
struct mnt_namespace *ns = NULL;
struct path root;
struct proc_mounts *p;
struct seq_file *m;
int ret = -EINVAL;
if (!task)
@ -260,26 +262,21 @@ static int mounts_open_common(struct inode *inode, struct file *file,
task_unlock(task);
put_task_struct(task);
ret = -ENOMEM;
p = kmalloc(sizeof(struct proc_mounts), GFP_KERNEL);
if (!p)
ret = seq_open_private(file, &mounts_op, sizeof(struct proc_mounts));
if (ret)
goto err_put_path;
file->private_data = &p->m;
ret = seq_open(file, &mounts_op);
if (ret)
goto err_free;
m = file->private_data;
m->poll_event = ns->event;
p = m->private;
p->ns = ns;
p->root = root;
p->m.poll_event = ns->event;
p->show = show;
p->cached_event = ~0ULL;
return 0;
err_free:
kfree(p);
err_put_path:
path_put(&root);
err_put_ns:
@ -290,10 +287,11 @@ static int mounts_open_common(struct inode *inode, struct file *file,
static int mounts_release(struct inode *inode, struct file *file)
{
struct proc_mounts *p = proc_mounts(file->private_data);
struct seq_file *m = file->private_data;
struct proc_mounts *p = m->private;
path_put(&p->root);
put_mnt_ns(p->ns);
return seq_release(inode, file);
return seq_release_private(inode, file);
}
static int mounts_open(struct inode *inode, struct file *file)

19
fs/seq_file.c
View File

@ -48,18 +48,21 @@ static void *seq_buf_alloc(unsigned long size)
* ERR_PTR(error). In the end of sequence they return %NULL. ->show()
* returns 0 in case of success and negative number in case of error.
* Returning SEQ_SKIP means "discard this element and move on".
* Note: seq_open() will allocate a struct seq_file and store its
* pointer in @file->private_data. This pointer should not be modified.
*/
int seq_open(struct file *file, const struct seq_operations *op)
{
struct seq_file *p = file->private_data;
struct seq_file *p;
WARN_ON(file->private_data);
p = kzalloc(sizeof(*p), GFP_KERNEL);
if (!p)
return -ENOMEM;
file->private_data = p;
if (!p) {
p = kmalloc(sizeof(*p), GFP_KERNEL);
if (!p)
return -ENOMEM;
file->private_data = p;
}
memset(p, 0, sizeof(*p));
mutex_init(&p->lock);
p->op = op;
#ifdef CONFIG_USER_NS

5
include/drm/drm_mem_util.h
View File

@ -56,10 +56,7 @@ static __inline__ void *drm_malloc_ab(size_t nmemb, size_t size)
static __inline void drm_free_large(void *ptr)
{
if (!is_vmalloc_addr(ptr))
return kfree(ptr);
vfree(ptr);
kvfree(ptr);
}
#endif

6
include/linux/genalloc.h
View File

@ -119,16 +119,16 @@ extern unsigned long gen_pool_best_fit(unsigned long *map, unsigned long size,
extern struct gen_pool *devm_gen_pool_create(struct device *dev,
int min_alloc_order, int nid);
extern struct gen_pool *dev_get_gen_pool(struct device *dev);
extern struct gen_pool *gen_pool_get(struct device *dev);
bool addr_in_gen_pool(struct gen_pool *pool, unsigned long start,
size_t size);
#ifdef CONFIG_OF
extern struct gen_pool *of_get_named_gen_pool(struct device_node *np,
extern struct gen_pool *of_gen_pool_get(struct device_node *np,
const char *propname, int index);
#else
static inline struct gen_pool *of_get_named_gen_pool(struct device_node *np,
static inline struct gen_pool *of_gen_pool_get(struct device_node *np,
const char *propname, int index)
{
return NULL;

8
include/linux/gfp.h
View File

@ -384,6 +384,14 @@ void drain_zone_pages(struct zone *zone, struct per_cpu_pages *pcp);
void drain_all_pages(struct zone *zone);
void drain_local_pages(struct zone *zone);
#ifdef CONFIG_DEFERRED_STRUCT_PAGE_INIT
void page_alloc_init_late(void);
#else
static inline void page_alloc_init_late(void)
{
}
#endif
/*
* gfp_allowed_mask is set to GFP_BOOT_MASK during early boot to restrict what
* GFP flags are used before interrupts are enabled. Once interrupts are

3
include/linux/kernel.h
View File

@ -439,6 +439,9 @@ extern int panic_on_unrecovered_nmi;
extern int panic_on_io_nmi;
extern int panic_on_warn;
extern int sysctl_panic_on_stackoverflow;
extern bool crash_kexec_post_notifiers;
/*
* Only to be used by arch init code. If the user over-wrote the default
* CONFIG_PANIC_TIMEOUT, honor it.

18
include/linux/memblock.h
View File

@ -101,6 +101,9 @@ void __next_mem_range_rev(u64 *idx, int nid, ulong flags,
struct memblock_type *type_b, phys_addr_t *out_start,
phys_addr_t *out_end, int *out_nid);
void __next_reserved_mem_region(u64 *idx, phys_addr_t *out_start,
phys_addr_t *out_end);
/**
* for_each_mem_range - iterate through memblock areas from type_a and not
* included in type_b. Or just type_a if type_b is NULL.
@ -142,6 +145,21 @@ void __next_mem_range_rev(u64 *idx, int nid, ulong flags,
__next_mem_range_rev(&i, nid, flags, type_a, type_b, \
p_start, p_end, p_nid))
/**
* for_each_reserved_mem_region - iterate over all reserved memblock areas
* @i: u64 used as loop variable
* @p_start: ptr to phys_addr_t for start address of the range, can be %NULL
* @p_end: ptr to phys_addr_t for end address of the range, can be %NULL
*
* Walks over reserved areas of memblock. Available as soon as memblock
* is initialized.
*/
#define for_each_reserved_mem_region(i, p_start, p_end) \
for (i = 0UL, \
__next_reserved_mem_region(&i, p_start, p_end); \
i != (u64)ULLONG_MAX; \
__next_reserved_mem_region(&i, p_start, p_end))
#ifdef CONFIG_MOVABLE_NODE
static inline bool memblock_is_hotpluggable(struct memblock_region *m)
{

8
include/linux/mm.h
View File

@ -1635,6 +1635,8 @@ extern void free_highmem_page(struct page *page);
extern void adjust_managed_page_count(struct page *page, long count);
extern void mem_init_print_info(const char *str);
extern void reserve_bootmem_region(unsigned long start, unsigned long end);
/* Free the reserved page into the buddy system, so it gets managed. */
static inline void __free_reserved_page(struct page *page)
{
@ -1724,7 +1726,8 @@ extern void sparse_memory_present_with_active_regions(int nid);
#if !defined(CONFIG_HAVE_MEMBLOCK_NODE_MAP) && \
!defined(CONFIG_HAVE_ARCH_EARLY_PFN_TO_NID)
static inline int __early_pfn_to_nid(unsigned long pfn)
static inline int __early_pfn_to_nid(unsigned long pfn,
struct mminit_pfnnid_cache *state)
{
return 0;
}
@ -1732,7 +1735,8 @@ static inline int __early_pfn_to_nid(unsigned long pfn)
/* please see mm/page_alloc.c */
extern int __meminit early_pfn_to_nid(unsigned long pfn);
/* there is a per-arch backend function. */
extern int __meminit __early_pfn_to_nid(unsigned long pfn);
extern int __meminit __early_pfn_to_nid(unsigned long pfn,
struct mminit_pfnnid_cache *state);
#endif
extern void set_dma_reserve(unsigned long new_dma_reserve);

23
include/linux/mmzone.h
View File

@ -762,6 +762,14 @@ typedef struct pglist_data {
/* Number of pages migrated during the rate limiting time interval */
unsigned long numabalancing_migrate_nr_pages;
#endif
#ifdef CONFIG_DEFERRED_STRUCT_PAGE_INIT
/*
* If memory initialisation on large machines is deferred then this
* is the first PFN that needs to be initialised.
*/
unsigned long first_deferred_pfn;
#endif /* CONFIG_DEFERRED_STRUCT_PAGE_INIT */
} pg_data_t;
#define node_present_pages(nid) (NODE_DATA(nid)->node_present_pages)
@ -1216,11 +1224,16 @@ void sparse_init(void);
#define sparse_index_init(_sec, _nid) do {} while (0)
#endif /* CONFIG_SPARSEMEM */
#ifdef CONFIG_NODES_SPAN_OTHER_NODES
bool early_pfn_in_nid(unsigned long pfn, int nid);
#else
#define early_pfn_in_nid(pfn, nid) (1)
#endif
/*
* During memory init memblocks map pfns to nids. The search is expensive and
* this caches recent lookups. The implementation of __early_pfn_to_nid
* may treat start/end as pfns or sections.
*/
struct mminit_pfnnid_cache {
unsigned long last_start;
unsigned long last_end;
int last_nid;
};
#ifndef early_pfn_valid
#define early_pfn_valid(pfn) (1)

7
include/linux/scatterlist.h
View File

@ -265,13 +265,16 @@ int sg_alloc_table_from_pages(struct sg_table *sgt,
unsigned long offset, unsigned long size,
gfp_t gfp_mask);
size_t sg_copy_buffer(struct scatterlist *sgl, unsigned int nents, void *buf,
size_t buflen, off_t skip, bool to_buffer);
size_t sg_copy_from_buffer(struct scatterlist *sgl, unsigned int nents,
void *buf, size_t buflen);
const void *buf, size_t buflen);
size_t sg_copy_to_buffer(struct scatterlist *sgl, unsigned int nents,
void *buf, size_t buflen);
size_t sg_pcopy_from_buffer(struct scatterlist *sgl, unsigned int nents,
void *buf, size_t buflen, off_t skip);
const void *buf, size_t buflen, off_t skip);
size_t sg_pcopy_to_buffer(struct scatterlist *sgl, unsigned int nents,
void *buf, size_t buflen, off_t skip);

2
init/main.c
View File

@ -1004,6 +1004,8 @@ static noinline void __init kernel_init_freeable(void)
smp_init();
sched_init_smp();
page_alloc_init_late();
do_basic_setup();
/* Open the /dev/console on the rootfs, this should never fail */

50
ipc/msg.c
View File

@ -76,7 +76,7 @@ struct msg_sender {
static inline struct msg_queue *msq_obtain_object(struct ipc_namespace *ns, int id)
{
struct kern_ipc_perm *ipcp = ipc_obtain_object(&msg_ids(ns), id);
struct kern_ipc_perm *ipcp = ipc_obtain_object_idr(&msg_ids(ns), id);
if (IS_ERR(ipcp))
return ERR_CAST(ipcp);
@ -196,7 +196,7 @@ static void expunge_all(struct msg_queue *msq, int res)
* or dealing with -EAGAIN cases. See lockless receive part 1
* and 2 in do_msgrcv().
*/
smp_mb();
smp_wmb(); /* barrier (B) */
msr->r_msg = ERR_PTR(res);
}
}
@ -580,7 +580,8 @@ static inline int pipelined_send(struct msg_queue *msq, struct msg_msg *msg)
/* initialize pipelined send ordering */
msr->r_msg = NULL;
wake_up_process(msr->r_tsk);
smp_mb(); /* see barrier comment below */
/* barrier (B) see barrier comment below */
smp_wmb();
msr->r_msg = ERR_PTR(-E2BIG);
} else {
msr->r_msg = NULL;
@ -589,11 +590,12 @@ static inline int pipelined_send(struct msg_queue *msq, struct msg_msg *msg)
wake_up_process(msr->r_tsk);
/*
* Ensure that the wakeup is visible before
* setting r_msg, as the receiving end depends
* on it. See lockless receive part 1 and 2 in
* do_msgrcv().
* setting r_msg, as the receiving can otherwise
* exit - once r_msg is set, the receiver can
* continue. See lockless receive part 1 and 2
* in do_msgrcv(). Barrier (B).
*/
smp_mb();
smp_wmb();
msr->r_msg = msg;
return 1;
@ -932,12 +934,38 @@ long do_msgrcv(int msqid, void __user *buf, size_t bufsz, long msgtyp, int msgfl
/* Lockless receive, part 2:
* Wait until pipelined_send or expunge_all are outside of
* wake_up_process(). There is a race with exit(), see
* ipc/mqueue.c for the details.
* ipc/mqueue.c for the details. The correct serialization
* ensures that a receiver cannot continue without the wakeup
* being visibible _before_ setting r_msg:
*
* CPU 0 CPU 1
* <loop receiver>
* smp_rmb(); (A) <-- pair -. <waker thread>
* <load ->r_msg> | msr->r_msg = NULL;
* | wake_up_process();
* <continue> `------> smp_wmb(); (B)
* msr->r_msg = msg;
*
* Where (A) orders the message value read and where (B) orders
* the write to the r_msg -- done in both pipelined_send and
* expunge_all.
*/
msg = (struct msg_msg *)msr_d.r_msg;
while (msg == NULL) {
cpu_relax();
for (;;) {
/*
* Pairs with writer barrier in pipelined_send
* or expunge_all.
*/
smp_rmb(); /* barrier (A) */
msg = (struct msg_msg *)msr_d.r_msg;
if (msg)
break;
/*
* The cpu_relax() call is a compiler barrier
* which forces everything in this loop to be
* re-loaded.
*/
cpu_relax();
}
/* Lockless receive, part 3:

4
ipc/sem.c
View File

@ -391,7 +391,7 @@ static inline struct sem_array *sem_obtain_lock(struct ipc_namespace *ns,
struct kern_ipc_perm *ipcp;
struct sem_array *sma;
ipcp = ipc_obtain_object(&sem_ids(ns), id);
ipcp = ipc_obtain_object_idr(&sem_ids(ns), id);
if (IS_ERR(ipcp))
return ERR_CAST(ipcp);
@ -410,7 +410,7 @@ static inline struct sem_array *sem_obtain_lock(struct ipc_namespace *ns,
static inline struct sem_array *sem_obtain_object(struct ipc_namespace *ns, int id)
{
struct kern_ipc_perm *ipcp = ipc_obtain_object(&sem_ids(ns), id);
struct kern_ipc_perm *ipcp = ipc_obtain_object_idr(&sem_ids(ns), id);
if (IS_ERR(ipcp))
return ERR_CAST(ipcp);

12
ipc/shm.c
View File

@ -129,7 +129,7 @@ void __init shm_init(void)
static inline struct shmid_kernel *shm_obtain_object(struct ipc_namespace *ns, int id)
{
struct kern_ipc_perm *ipcp = ipc_obtain_object(&shm_ids(ns), id);
struct kern_ipc_perm *ipcp = ipc_obtain_object_idr(&shm_ids(ns), id);
if (IS_ERR(ipcp))
return ERR_CAST(ipcp);
@ -155,8 +155,11 @@ static inline struct shmid_kernel *shm_lock(struct ipc_namespace *ns, int id)
{
struct kern_ipc_perm *ipcp = ipc_lock(&shm_ids(ns), id);
if (IS_ERR(ipcp))
return (struct shmid_kernel *)ipcp;
/*
* We raced in the idr lookup or with shm_destroy(). Either way, the
* ID is busted.
*/
BUG_ON(IS_ERR(ipcp));
return container_of(ipcp, struct shmid_kernel, shm_perm);
}
@ -191,7 +194,6 @@ static void shm_open(struct vm_area_struct *vma)
struct shmid_kernel *shp;
shp = shm_lock(sfd->ns, sfd->id);
BUG_ON(IS_ERR(shp));
shp->shm_atim = get_seconds();
shp->shm_lprid = task_tgid_vnr(current);
shp->shm_nattch++;
@ -258,7 +260,6 @@ static void shm_close(struct vm_area_struct *vma)
down_write(&shm_ids(ns).rwsem);
/* remove from the list of attaches of the shm segment */
shp = shm_lock(ns, sfd->id);
BUG_ON(IS_ERR(shp));
shp->shm_lprid = task_tgid_vnr(current);
shp->shm_dtim = get_seconds();
shp->shm_nattch--;
@ -1191,7 +1192,6 @@ long do_shmat(int shmid, char __user *shmaddr, int shmflg, ulong *raddr,
out_nattch:
down_write(&shm_ids(ns).rwsem);
shp = shm_lock(ns, shmid);
BUG_ON(IS_ERR(shp));
shp->shm_nattch--;
if (shm_may_destroy(ns, shp))
shm_destroy(ns, shp);

28
ipc/util.c
View File

@ -467,10 +467,7 @@ void ipc_rcu_free(struct rcu_head *head)
{
struct ipc_rcu *p = container_of(head, struct ipc_rcu, rcu);
if (is_vmalloc_addr(p))
vfree(p);
else
kfree(p);
kvfree(p);
}
/**
@ -558,7 +555,7 @@ void ipc64_perm_to_ipc_perm(struct ipc64_perm *in, struct ipc_perm *out)
* Call inside the RCU critical section.
* The ipc object is *not* locked on exit.
*/
struct kern_ipc_perm *ipc_obtain_object(struct ipc_ids *ids, int id)
struct kern_ipc_perm *ipc_obtain_object_idr(struct ipc_ids *ids, int id)
{
struct kern_ipc_perm *out;
int lid = ipcid_to_idx(id);
@ -584,21 +581,24 @@ struct kern_ipc_perm *ipc_lock(struct ipc_ids *ids, int id)
struct kern_ipc_perm *out;
rcu_read_lock();
out = ipc_obtain_object(ids, id);
out = ipc_obtain_object_idr(ids, id);
if (IS_ERR(out))
goto err1;
goto err;
spin_lock(&out->lock);
/* ipc_rmid() may have already freed the ID while ipc_lock
* was spinning: here verify that the structure is still valid
/*
* ipc_rmid() may have already freed the ID while ipc_lock()
* was spinning: here verify that the structure is still valid.
* Upon races with RMID, return -EIDRM, thus indicating that
* the ID points to a removed identifier.
*/
if (ipc_valid_object(out))
return out;
spin_unlock(&out->lock);
out = ERR_PTR(-EINVAL);
err1:
out = ERR_PTR(-EIDRM);
err:
rcu_read_unlock();
return out;
}
@ -608,7 +608,7 @@ struct kern_ipc_perm *ipc_lock(struct ipc_ids *ids, int id)
* @ids: ipc identifier set
* @id: ipc id to look for
*
* Similar to ipc_obtain_object() but also checks
* Similar to ipc_obtain_object_idr() but also checks
* the ipc object reference counter.
*
* Call inside the RCU critical section.
@ -616,13 +616,13 @@ struct kern_ipc_perm *ipc_lock(struct ipc_ids *ids, int id)
*/
struct kern_ipc_perm *ipc_obtain_object_check(struct ipc_ids *ids, int id)
{
struct kern_ipc_perm *out = ipc_obtain_object(ids, id);
struct kern_ipc_perm *out = ipc_obtain_object_idr(ids, id);
if (IS_ERR(out))
goto out;
if (ipc_checkid(out, id))
return ERR_PTR(-EIDRM);
return ERR_PTR(-EINVAL);
out:
return out;
}

2
ipc/util.h
View File

@ -132,7 +132,7 @@ void ipc_rcu_putref(void *ptr, void (*func)(struct rcu_head *head));
void ipc_rcu_free(struct rcu_head *head);
struct kern_ipc_perm *ipc_lock(struct ipc_ids *, int);
struct kern_ipc_perm *ipc_obtain_object(struct ipc_ids *ids, int id);
struct kern_ipc_perm *ipc_obtain_object_idr(struct ipc_ids *ids, int id);
void kernel_to_ipc64_perm(struct kern_ipc_perm *in, struct ipc64_perm *out);
void ipc64_perm_to_ipc_perm(struct ipc64_perm *in, struct ipc_perm *out);

6
kernel/gcov/base.c
View File

@ -92,6 +92,12 @@ void __gcov_merge_time_profile(gcov_type *counters, unsigned int n_counters)
}
EXPORT_SYMBOL(__gcov_merge_time_profile);
void __gcov_merge_icall_topn(gcov_type *counters, unsigned int n_counters)
{
/* Unused. */
}
EXPORT_SYMBOL(__gcov_merge_icall_topn);
/**
* gcov_enable_events - enable event reporting through gcov_event()
*

4
kernel/gcov/gcc_4_7.c
View File

@ -18,7 +18,9 @@
#include <linux/vmalloc.h>
#include "gcov.h"
#if __GNUC__ == 4 && __GNUC_MINOR__ >= 9
#if __GNUC__ == 5 && __GNUC_MINOR__ >= 1
#define GCOV_COUNTERS 10
#elif __GNUC__ == 4 && __GNUC_MINOR__ >= 9
#define GCOV_COUNTERS 9
#else
#define GCOV_COUNTERS 8

11
kernel/kexec.c
View File

@ -84,6 +84,17 @@ struct resource crashk_low_res = {
int kexec_should_crash(struct task_struct *p)
{
/*
* If crash_kexec_post_notifiers is enabled, don't run
* crash_kexec() here yet, which must be run after panic
* notifiers in panic().
*/
if (crash_kexec_post_notifiers)
return 0;
/*
* There are 4 panic() calls in do_exit() path, each of which
* corresponds to each of these 4 conditions.
*/
if (in_interrupt() || !p->pid || is_global_init(p) || panic_on_oops)
return 1;
return 0;

5
kernel/panic.c
View File

@ -32,7 +32,7 @@ static unsigned long tainted_mask;
static int pause_on_oops;
static int pause_on_oops_flag;
static DEFINE_SPINLOCK(pause_on_oops_lock);
static bool crash_kexec_post_notifiers;
bool crash_kexec_post_notifiers;
int panic_on_warn __read_mostly;
int panic_timeout = CONFIG_PANIC_TIMEOUT;
@ -142,7 +142,8 @@ void panic(const char *fmt, ...)
* Note: since some panic_notifiers can make crashed kernel
* more unstable, it can increase risks of the kdump failure too.
*/
crash_kexec(NULL);
if (crash_kexec_post_notifiers)
crash_kexec(NULL);
bust_spinlocks(0);

8
kernel/printk/printk.c
View File

@ -207,14 +207,14 @@ static int console_may_schedule;
* need to be changed in the future, when the requirements change.
*
* /dev/kmsg exports the structured data in the following line format:
* "<level>,<sequnum>,<timestamp>,<contflag>;<message text>\n"
* "<level>,<sequnum>,<timestamp>,<contflag>[,additional_values, ... ];<message text>\n"
*
* Users of the export format should ignore possible additional values
* separated by ',', and find the message after the ';' character.
*
* The optional key/value pairs are attached as continuation lines starting
* with a space character and terminated by a newline. All possible
* non-prinatable characters are escaped in the "\xff" notation.
*
* Users of the export format should ignore possible additional values
* separated by ',', and find the message after the ';' character.
*/
enum log_flags {

5
kernel/relay.c
View File

@ -81,10 +81,7 @@ static struct page **relay_alloc_page_array(unsigned int n_pages)
*/
static void relay_free_page_array(struct page **array)
{
if (is_vmalloc_addr(array))
vfree(array);
else
kfree(array);
kvfree(array);
}
/**

14
lib/genalloc.c
View File

@ -602,12 +602,12 @@ struct gen_pool *devm_gen_pool_create(struct device *dev, int min_alloc_order,
EXPORT_SYMBOL(devm_gen_pool_create);
/**
* dev_get_gen_pool - Obtain the gen_pool (if any) for a device
* gen_pool_get - Obtain the gen_pool (if any) for a device
* @dev: device to retrieve the gen_pool from
*
* Returns the gen_pool for the device if one is present, or NULL.
*/
struct gen_pool *dev_get_gen_pool(struct device *dev)
struct gen_pool *gen_pool_get(struct device *dev)
{
struct gen_pool **p = devres_find(dev, devm_gen_pool_release, NULL,
NULL);
@ -616,11 +616,11 @@ struct gen_pool *dev_get_gen_pool(struct device *dev)
return NULL;
return *p;
}
EXPORT_SYMBOL_GPL(dev_get_gen_pool);
EXPORT_SYMBOL_GPL(gen_pool_get);
#ifdef CONFIG_OF
/**
* of_get_named_gen_pool - find a pool by phandle property
* of_gen_pool_get - find a pool by phandle property
* @np: device node
* @propname: property name containing phandle(s)
* @index: index into the phandle array
@ -629,7 +629,7 @@ EXPORT_SYMBOL_GPL(dev_get_gen_pool);
* address of the device tree node pointed at by the phandle property,
* or NULL if not found.
*/
struct gen_pool *of_get_named_gen_pool(struct device_node *np,
struct gen_pool *of_gen_pool_get(struct device_node *np,
const char *propname, int index)
{
struct platform_device *pdev;
@ -642,7 +642,7 @@ struct gen_pool *of_get_named_gen_pool(struct device_node *np,
of_node_put(np_pool);
if (!pdev)
return NULL;
return dev_get_gen_pool(&pdev->dev);
return gen_pool_get(&pdev->dev);
}
EXPORT_SYMBOL_GPL(of_get_named_gen_pool);
EXPORT_SYMBOL_GPL(of_gen_pool_get);
#endif /* CONFIG_OF */

18
lib/scatterlist.c
View File

@ -650,9 +650,8 @@ EXPORT_SYMBOL(sg_miter_stop);
* Returns the number of copied bytes.
*
**/
static size_t sg_copy_buffer(struct scatterlist *sgl, unsigned int nents,
void *buf, size_t buflen, off_t skip,
bool to_buffer)
size_t sg_copy_buffer(struct scatterlist *sgl, unsigned int nents, void *buf,
size_t buflen, off_t skip, bool to_buffer)
{
unsigned int offset = 0;
struct sg_mapping_iter miter;
@ -689,6 +688,7 @@ static size_t sg_copy_buffer(struct scatterlist *sgl, unsigned int nents,
local_irq_restore(flags);
return offset;
}
EXPORT_SYMBOL(sg_copy_buffer);
/**
* sg_copy_from_buffer - Copy from a linear buffer to an SG list
@ -701,9 +701,9 @@ static size_t sg_copy_buffer(struct scatterlist *sgl, unsigned int nents,
*
**/
size_t sg_copy_from_buffer(struct scatterlist *sgl, unsigned int nents,
void *buf, size_t buflen)
const void *buf, size_t buflen)
{
return sg_copy_buffer(sgl, nents, buf, buflen, 0, false);
return sg_copy_buffer(sgl, nents, (void *)buf, buflen, 0, false);
}
EXPORT_SYMBOL(sg_copy_from_buffer);
@ -729,16 +729,16 @@ EXPORT_SYMBOL(sg_copy_to_buffer);
* @sgl: The SG list
* @nents: Number of SG entries
* @buf: Where to copy from
* @skip: Number of bytes to skip before copying
* @buflen: The number of bytes to copy
* @skip: Number of bytes to skip before copying
*
* Returns the number of copied bytes.
*
**/
size_t sg_pcopy_from_buffer(struct scatterlist *sgl, unsigned int nents,
void *buf, size_t buflen, off_t skip)
const void *buf, size_t buflen, off_t skip)
{
return sg_copy_buffer(sgl, nents, buf, buflen, skip, false);
return sg_copy_buffer(sgl, nents, (void *)buf, buflen, skip, false);
}
EXPORT_SYMBOL(sg_pcopy_from_buffer);
@ -747,8 +747,8 @@ EXPORT_SYMBOL(sg_pcopy_from_buffer);
* @sgl: The SG list
* @nents: Number of SG entries
* @buf: Where to copy to
* @skip: Number of bytes to skip before copying
* @buflen: The number of bytes to copy
* @skip: Number of bytes to skip before copying
*
* Returns the number of copied bytes.
*

18
mm/Kconfig
View File

@ -636,3 +636,21 @@ config MAX_STACK_SIZE_MB
changed to a smaller value in which case that is used.
A sane initial value is 80 MB.
# For architectures that support deferred memory initialisation
config ARCH_SUPPORTS_DEFERRED_STRUCT_PAGE_INIT
bool
config DEFERRED_STRUCT_PAGE_INIT
bool "Defer initialisation of struct pages to kswapd"
default n
depends on ARCH_SUPPORTS_DEFERRED_STRUCT_PAGE_INIT
depends on MEMORY_HOTPLUG
help
Ordinarily all struct pages are initialised during early boot in a
single thread. On very large machines this can take a considerable
amount of time. If this option is set, large machines will bring up
a subset of memmap at boot and then initialise the rest in parallel
when kswapd starts. This has a potential performance impact on
processes running early in the lifetime of the systemm until kswapd
finishes the initialisation.

13
mm/bootmem.c
View File

@ -164,7 +164,7 @@ void __init free_bootmem_late(unsigned long physaddr, unsigned long size)
end = PFN_DOWN(physaddr + size);
for (; cursor < end; cursor++) {
__free_pages_bootmem(pfn_to_page(cursor), 0);
__free_pages_bootmem(pfn_to_page(cursor), cursor, 0);
totalram_pages++;
}
}
@ -172,7 +172,7 @@ void __init free_bootmem_late(unsigned long physaddr, unsigned long size)
static unsigned long __init free_all_bootmem_core(bootmem_data_t *bdata)
{
struct page *page;
unsigned long *map, start, end, pages, count = 0;
unsigned long *map, start, end, pages, cur, count = 0;
if (!bdata->node_bootmem_map)
return 0;
@ -210,17 +210,17 @@ static unsigned long __init free_all_bootmem_core(bootmem_data_t *bdata)
if (IS_ALIGNED(start, BITS_PER_LONG) && vec == ~0UL) {
int order = ilog2(BITS_PER_LONG);
__free_pages_bootmem(pfn_to_page(start), order);
__free_pages_bootmem(pfn_to_page(start), start, order);
count += BITS_PER_LONG;
start += BITS_PER_LONG;
} else {
unsigned long cur = start;
cur = start;
start = ALIGN(start + 1, BITS_PER_LONG);
while (vec && cur != start) {
if (vec & 1) {
page = pfn_to_page(cur);
__free_pages_bootmem(page, 0);
__free_pages_bootmem(page, cur, 0);
count++;
}
vec >>= 1;
@ -229,12 +229,13 @@ static unsigned long __init free_all_bootmem_core(bootmem_data_t *bdata)
}
}
cur = bdata->node_min_pfn;
page = virt_to_page(bdata->node_bootmem_map);
pages = bdata->node_low_pfn - bdata->node_min_pfn;
pages = bootmem_bootmap_pages(pages);
count += pages;
while (pages--)
__free_pages_bootmem(page++, 0);
__free_pages_bootmem(page++, cur++, 0);
bdebug("nid=%td released=%lx\n", bdata - bootmem_node_data, count);

11
mm/internal.h
View File

@ -155,7 +155,8 @@ __find_buddy_index(unsigned long page_idx, unsigned int order)
}
extern int __isolate_free_page(struct page *page, unsigned int order);
extern void __free_pages_bootmem(struct page *page, unsigned int order);
extern void __free_pages_bootmem(struct page *page, unsigned long pfn,
unsigned int order);
extern void prep_compound_page(struct page *page, unsigned long order);
#ifdef CONFIG_MEMORY_FAILURE
extern bool is_free_buddy_page(struct page *page);
@ -361,10 +362,7 @@ do { \
} while (0)
extern void mminit_verify_pageflags_layout(void);
extern void mminit_verify_page_links(struct page *page,
enum zone_type zone, unsigned long nid, unsigned long pfn);
extern void mminit_verify_zonelist(void);
#else
static inline void mminit_dprintk(enum mminit_level level,
@ -376,11 +374,6 @@ static inline void mminit_verify_pageflags_layout(void)
{
}
static inline void mminit_verify_page_links(struct page *page,
enum zone_type zone, unsigned long nid, unsigned long pfn)
{
}
static inline void mminit_verify_zonelist(void)
{
}

34
mm/memblock.c
View File

@ -819,6 +819,38 @@ int __init_memblock memblock_mark_mirror(phys_addr_t base, phys_addr_t size)
}
/**
* __next_reserved_mem_region - next function for for_each_reserved_region()
* @idx: pointer to u64 loop variable
* @out_start: ptr to phys_addr_t for start address of the region, can be %NULL
* @out_end: ptr to phys_addr_t for end address of the region, can be %NULL
*
* Iterate over all reserved memory regions.
*/
void __init_memblock __next_reserved_mem_region(u64 *idx,
phys_addr_t *out_start,
phys_addr_t *out_end)
{
struct memblock_type *rsv = &memblock.reserved;
if (*idx >= 0 && *idx < rsv->cnt) {
struct memblock_region *r = &rsv->regions[*idx];
phys_addr_t base = r->base;
phys_addr_t size = r->size;
if (out_start)
*out_start = base;
if (out_end)
*out_end = base + size - 1;
*idx += 1;
return;
}
/* signal end of iteration */
*idx = ULLONG_MAX;
}
/**
* __next__mem_range - next function for for_each_free_mem_range() etc.
* @idx: pointer to u64 loop variable
@ -1387,7 +1419,7 @@ void __init __memblock_free_late(phys_addr_t base, phys_addr_t size)
end = PFN_DOWN(base + size);
for (; cursor < end; cursor++) {
__free_pages_bootmem(pfn_to_page(cursor), 0);
__free_pages_bootmem(pfn_to_page(cursor), cursor, 0);
totalram_pages++;
}
}

9
mm/mm_init.c
View File

@ -11,6 +11,7 @@
#include <linux/export.h>
#include <linux/memory.h>
#include <linux/notifier.h>
#include <linux/sched.h>
#include "internal.h"
#ifdef CONFIG_DEBUG_MEMORY_INIT
@ -130,14 +131,6 @@ void __init mminit_verify_pageflags_layout(void)
BUG_ON(or_mask != add_mask);
}
void __meminit mminit_verify_page_links(struct page *page, enum zone_type zone,
unsigned long nid, unsigned long pfn)
{
BUG_ON(page_to_nid(page) != nid);
BUG_ON(page_zonenum(page) != zone);
BUG_ON(page_to_pfn(page) != pfn);
}
static __init int set_mminit_loglevel(char *str)
{
get_option(&str, &mminit_loglevel);

7
mm/nobootmem.c
View File

@ -86,7 +86,7 @@ void __init free_bootmem_late(unsigned long addr, unsigned long size)
end = PFN_DOWN(addr + size);
for (; cursor < end; cursor++) {
__free_pages_bootmem(pfn_to_page(cursor), 0);
__free_pages_bootmem(pfn_to_page(cursor), cursor, 0);
totalram_pages++;
}
}
@ -101,7 +101,7 @@ static void __init __free_pages_memory(unsigned long start, unsigned long end)
while (start + (1UL << order) > end)
order--;
__free_pages_bootmem(pfn_to_page(start), order);
__free_pages_bootmem(pfn_to_page(start), start, order);
start += (1UL << order);
}
@ -130,6 +130,9 @@ static unsigned long __init free_low_memory_core_early(void)
memblock_clear_hotplug(0, -1);
for_each_reserved_mem_region(i, &start, &end)
reserve_bootmem_region(start, end);
for_each_free_mem_range(i, NUMA_NO_NODE, MEMBLOCK_NONE, &start, &end,
NULL)
count += __free_memory_core(start, end);

442
mm/page_alloc.c
View File

@ -18,6 +18,7 @@
#include <linux/mm.h>
#include <linux/swap.h>
#include <linux/interrupt.h>
#include <linux/rwsem.h>
#include <linux/pagemap.h>
#include <linux/jiffies.h>
#include <linux/bootmem.h>
@ -61,6 +62,7 @@
#include <linux/hugetlb.h>
#include <linux/sched/rt.h>
#include <linux/page_owner.h>
#include <linux/kthread.h>
#include <asm/sections.h>
#include <asm/tlbflush.h>
@ -235,6 +237,77 @@ EXPORT_SYMBOL(nr_online_nodes);
int page_group_by_mobility_disabled __read_mostly;
#ifdef CONFIG_DEFERRED_STRUCT_PAGE_INIT
static inline void reset_deferred_meminit(pg_data_t *pgdat)
{
pgdat->first_deferred_pfn = ULONG_MAX;
}
/* Returns true if the struct page for the pfn is uninitialised */
static inline bool __meminit early_page_uninitialised(unsigned long pfn)
{
int nid = early_pfn_to_nid(pfn);
if (pfn >= NODE_DATA(nid)->first_deferred_pfn)
return true;
return false;
}
static inline bool early_page_nid_uninitialised(unsigned long pfn, int nid)
{
if (pfn >= NODE_DATA(nid)->first_deferred_pfn)
return true;
return false;
}
/*
* Returns false when the remaining initialisation should be deferred until
* later in the boot cycle when it can be parallelised.
*/
static inline bool update_defer_init(pg_data_t *pgdat,
unsigned long pfn, unsigned long zone_end,
unsigned long *nr_initialised)
{
/* Always populate low zones for address-contrained allocations */
if (zone_end < pgdat_end_pfn(pgdat))
return true;
/* Initialise at least 2G of the highest zone */
(*nr_initialised)++;
if (*nr_initialised > (2UL << (30 - PAGE_SHIFT)) &&
(pfn & (PAGES_PER_SECTION - 1)) == 0) {
pgdat->first_deferred_pfn = pfn;
return false;
}
return true;
}
#else
static inline void reset_deferred_meminit(pg_data_t *pgdat)
{
}
static inline bool early_page_uninitialised(unsigned long pfn)
{
return false;
}
static inline bool early_page_nid_uninitialised(unsigned long pfn, int nid)
{
return false;
}
static inline bool update_defer_init(pg_data_t *pgdat,
unsigned long pfn, unsigned long zone_end,
unsigned long *nr_initialised)
{
return true;
}
#endif
void set_pageblock_migratetype(struct page *page, int migratetype)
{
if (unlikely(page_group_by_mobility_disabled &&
@ -764,6 +837,75 @@ static int free_tail_pages_check(struct page *head_page, struct page *page)
return 0;
}
static void __meminit __init_single_page(struct page *page, unsigned long pfn,
unsigned long zone, int nid)
{
set_page_links(page, zone, nid, pfn);
init_page_count(page);
page_mapcount_reset(page);
page_cpupid_reset_last(page);
INIT_LIST_HEAD(&page->lru);
#ifdef WANT_PAGE_VIRTUAL
/* The shift won't overflow because ZONE_NORMAL is below 4G. */
if (!is_highmem_idx(zone))
set_page_address(page, __va(pfn << PAGE_SHIFT));
#endif
}
static void __meminit __init_single_pfn(unsigned long pfn, unsigned long zone,
int nid)
{
return __init_single_page(pfn_to_page(pfn), pfn, zone, nid);
}
#ifdef CONFIG_DEFERRED_STRUCT_PAGE_INIT
static void init_reserved_page(unsigned long pfn)
{
pg_data_t *pgdat;
int nid, zid;
if (!early_page_uninitialised(pfn))
return;
nid = early_pfn_to_nid(pfn);
pgdat = NODE_DATA(nid);
for (zid = 0; zid < MAX_NR_ZONES; zid++) {
struct zone *zone = &pgdat->node_zones[zid];
if (pfn >= zone->zone_start_pfn && pfn < zone_end_pfn(zone))
break;
}
__init_single_pfn(pfn, zid, nid);
}
#else
static inline void init_reserved_page(unsigned long pfn)
{
}
#endif /* CONFIG_DEFERRED_STRUCT_PAGE_INIT */
/*
* Initialised pages do not have PageReserved set. This function is
* called for each range allocated by the bootmem allocator and
* marks the pages PageReserved. The remaining valid pages are later
* sent to the buddy page allocator.
*/
void __meminit reserve_bootmem_region(unsigned long start, unsigned long end)
{
unsigned long start_pfn = PFN_DOWN(start);
unsigned long end_pfn = PFN_UP(end);
for (; start_pfn < end_pfn; start_pfn++) {
if (pfn_valid(start_pfn)) {
struct page *page = pfn_to_page(start_pfn);
init_reserved_page(start_pfn);
SetPageReserved(page);
}
}
}
static bool free_pages_prepare(struct page *page, unsigned int order)
{
bool compound = PageCompound(page);
@ -818,7 +960,8 @@ static void __free_pages_ok(struct page *page, unsigned int order)
local_irq_restore(flags);
}
void __init __free_pages_bootmem(struct page *page, unsigned int order)
static void __init __free_pages_boot_core(struct page *page,
unsigned long pfn, unsigned int order)
{
unsigned int nr_pages = 1 << order;
struct page *p = page;
@ -838,6 +981,223 @@ void __init __free_pages_bootmem(struct page *page, unsigned int order)
__free_pages(page, order);
}
#if defined(CONFIG_HAVE_ARCH_EARLY_PFN_TO_NID) || \
defined(CONFIG_HAVE_MEMBLOCK_NODE_MAP)
/* Only safe to use early in boot when initialisation is single-threaded */
static struct mminit_pfnnid_cache early_pfnnid_cache __meminitdata;
int __meminit early_pfn_to_nid(unsigned long pfn)
{
int nid;
/* The system will behave unpredictably otherwise */
BUG_ON(system_state != SYSTEM_BOOTING);
nid = __early_pfn_to_nid(pfn, &early_pfnnid_cache);
if (nid >= 0)
return nid;
/* just returns 0 */
return 0;
}
#endif
#ifdef CONFIG_NODES_SPAN_OTHER_NODES
static inline bool __meminit meminit_pfn_in_nid(unsigned long pfn, int node,
struct mminit_pfnnid_cache *state)
{
int nid;
nid = __early_pfn_to_nid(pfn, state);
if (nid >= 0 && nid != node)
return false;
return true;
}
/* Only safe to use early in boot when initialisation is single-threaded */
static inline bool __meminit early_pfn_in_nid(unsigned long pfn, int node)
{
return meminit_pfn_in_nid(pfn, node, &early_pfnnid_cache);
}
#else
static inline bool __meminit early_pfn_in_nid(unsigned long pfn, int node)
{
return true;
}
static inline bool __meminit meminit_pfn_in_nid(unsigned long pfn, int node,
struct mminit_pfnnid_cache *state)
{
return true;
}
#endif
void __init __free_pages_bootmem(struct page *page, unsigned long pfn,
unsigned int order)
{
if (early_page_uninitialised(pfn))
return;
return __free_pages_boot_core(page, pfn, order);
}
#ifdef CONFIG_DEFERRED_STRUCT_PAGE_INIT
static void __init deferred_free_range(struct page *page,
unsigned long pfn, int nr_pages)
{
int i;
if (!page)
return;
/* Free a large naturally-aligned chunk if possible */
if (nr_pages == MAX_ORDER_NR_PAGES &&
(pfn & (MAX_ORDER_NR_PAGES-1)) == 0) {
set_pageblock_migratetype(page, MIGRATE_MOVABLE);
__free_pages_boot_core(page, pfn, MAX_ORDER-1);
return;
}
for (i = 0; i < nr_pages; i++, page++, pfn++)
__free_pages_boot_core(page, pfn, 0);
}
static __initdata DECLARE_RWSEM(pgdat_init_rwsem);
/* Initialise remaining memory on a node */
static int __init deferred_init_memmap(void *data)
{
pg_data_t *pgdat = data;
int nid = pgdat->node_id;
struct mminit_pfnnid_cache nid_init_state = { };
unsigned long start = jiffies;
unsigned long nr_pages = 0;
unsigned long walk_start, walk_end;
int i, zid;
struct zone *zone;
unsigned long first_init_pfn = pgdat->first_deferred_pfn;
const struct cpumask *cpumask = cpumask_of_node(pgdat->node_id);
if (first_init_pfn == ULONG_MAX) {
up_read(&pgdat_init_rwsem);
return 0;
}
/* Bind memory initialisation thread to a local node if possible */
if (!cpumask_empty(cpumask))
set_cpus_allowed_ptr(current, cpumask);
/* Sanity check boundaries */
BUG_ON(pgdat->first_deferred_pfn < pgdat->node_start_pfn);
BUG_ON(pgdat->first_deferred_pfn > pgdat_end_pfn(pgdat));
pgdat->first_deferred_pfn = ULONG_MAX;
/* Only the highest zone is deferred so find it */
for (zid = 0; zid < MAX_NR_ZONES; zid++) {
zone = pgdat->node_zones + zid;
if (first_init_pfn < zone_end_pfn(zone))
break;
}
for_each_mem_pfn_range(i, nid, &walk_start, &walk_end, NULL) {
unsigned long pfn, end_pfn;
struct page *page = NULL;
struct page *free_base_page = NULL;
unsigned long free_base_pfn = 0;
int nr_to_free = 0;
end_pfn = min(walk_end, zone_end_pfn(zone));
pfn = first_init_pfn;
if (pfn < walk_start)
pfn = walk_start;
if (pfn < zone->zone_start_pfn)
pfn = zone->zone_start_pfn;
for (; pfn < end_pfn; pfn++) {
if (!pfn_valid_within(pfn))
goto free_range;
/*
* Ensure pfn_valid is checked every
* MAX_ORDER_NR_PAGES for memory holes
*/
if ((pfn & (MAX_ORDER_NR_PAGES - 1)) == 0) {
if (!pfn_valid(pfn)) {
page = NULL;
goto free_range;
}
}
if (!meminit_pfn_in_nid(pfn, nid, &nid_init_state)) {
page = NULL;
goto free_range;
}
/* Minimise pfn page lookups and scheduler checks */
if (page && (pfn & (MAX_ORDER_NR_PAGES - 1)) != 0) {
page++;
} else {
nr_pages += nr_to_free;
deferred_free_range(free_base_page,
free_base_pfn, nr_to_free);
free_base_page = NULL;
free_base_pfn = nr_to_free = 0;
page = pfn_to_page(pfn);
cond_resched();
}
if (page->flags) {
VM_BUG_ON(page_zone(page) != zone);
goto free_range;
}
__init_single_page(page, pfn, zid, nid);
if (!free_base_page) {
free_base_page = page;
free_base_pfn = pfn;
nr_to_free = 0;
}
nr_to_free++;
/* Where possible, batch up pages for a single free */
continue;
free_range:
/* Free the current block of pages to allocator */
nr_pages += nr_to_free;
deferred_free_range(free_base_page, free_base_pfn,
nr_to_free);
free_base_page = NULL;
free_base_pfn = nr_to_free = 0;
}
first_init_pfn = max(end_pfn, first_init_pfn);
}
/* Sanity check that the next zone really is unpopulated */
WARN_ON(++zid < MAX_NR_ZONES && populated_zone(++zone));
pr_info("node %d initialised, %lu pages in %ums\n", nid, nr_pages,
jiffies_to_msecs(jiffies - start));
up_read(&pgdat_init_rwsem);
return 0;
}
void __init page_alloc_init_late(void)
{
int nid;
for_each_node_state(nid, N_MEMORY) {
down_read(&pgdat_init_rwsem);
kthread_run(deferred_init_memmap, NODE_DATA(nid), "pgdatinit%d", nid);
}
/* Block until all are initialised */
down_write(&pgdat_init_rwsem);
up_write(&pgdat_init_rwsem);
}
#endif /* CONFIG_DEFERRED_STRUCT_PAGE_INIT */
#ifdef CONFIG_CMA
/* Free whole pageblock and set its migration type to MIGRATE_CMA. */
void __init init_cma_reserved_pageblock(struct page *page)
@ -4150,6 +4510,9 @@ static void setup_zone_migrate_reserve(struct zone *zone)
zone->nr_migrate_reserve_block = reserve;
for (pfn = start_pfn; pfn < end_pfn; pfn += pageblock_nr_pages) {
if (!early_page_nid_uninitialised(pfn, zone_to_nid(zone)))
return;
if (!pfn_valid(pfn))
continue;
page = pfn_to_page(pfn);
@ -4212,15 +4575,16 @@ static void setup_zone_migrate_reserve(struct zone *zone)
void __meminit memmap_init_zone(unsigned long size, int nid, unsigned long zone,
unsigned long start_pfn, enum memmap_context context)
{
struct page *page;
pg_data_t *pgdat = NODE_DATA(nid);
unsigned long end_pfn = start_pfn + size;
unsigned long pfn;
struct zone *z;
unsigned long nr_initialised = 0;
if (highest_memmap_pfn < end_pfn - 1)
highest_memmap_pfn = end_pfn - 1;
z = &NODE_DATA(nid)->node_zones[zone];
z = &pgdat->node_zones[zone];
for (pfn = start_pfn; pfn < end_pfn; pfn++) {
/*
* There can be holes in boot-time mem_map[]s
@ -4232,14 +4596,11 @@ void __meminit memmap_init_zone(unsigned long size, int nid, unsigned long zone,
continue;
if (!early_pfn_in_nid(pfn, nid))
continue;
if (!update_defer_init(pgdat, pfn, end_pfn,
&nr_initialised))
break;
}
page = pfn_to_page(pfn);
set_page_links(page, zone, nid, pfn);
mminit_verify_page_links(page, zone, nid, pfn);
init_page_count(page);
page_mapcount_reset(page);
page_cpupid_reset_last(page);
SetPageReserved(page);
/*
* Mark the block movable so that blocks are reserved for
* movable at startup. This will force kernel allocations
@ -4254,17 +4615,14 @@ void __meminit memmap_init_zone(unsigned long size, int nid, unsigned long zone,
* check here not to call set_pageblock_migratetype() against
* pfn out of zone.
*/
if ((z->zone_start_pfn <= pfn)
&& (pfn < zone_end_pfn(z))
&& !(pfn & (pageblock_nr_pages - 1)))
set_pageblock_migratetype(page, MIGRATE_MOVABLE);
if (!(pfn & (pageblock_nr_pages - 1))) {
struct page *page = pfn_to_page(pfn);
INIT_LIST_HEAD(&page->lru);
#ifdef WANT_PAGE_VIRTUAL
/* The shift won't overflow because ZONE_NORMAL is below 4G. */
if (!is_highmem_idx(zone))
set_page_address(page, __va(pfn << PAGE_SHIFT));
#endif
__init_single_page(page, pfn, zone, nid);
set_pageblock_migratetype(page, MIGRATE_MOVABLE);
} else {
__init_single_pfn(pfn, zone, nid);
}
}
}
@ -4522,57 +4880,30 @@ int __meminit init_currently_empty_zone(struct zone *zone,
#ifdef CONFIG_HAVE_MEMBLOCK_NODE_MAP
#ifndef CONFIG_HAVE_ARCH_EARLY_PFN_TO_NID
/*
* Required by SPARSEMEM. Given a PFN, return what node the PFN is on.
*/
int __meminit __early_pfn_to_nid(unsigned long pfn)
int __meminit __early_pfn_to_nid(unsigned long pfn,
struct mminit_pfnnid_cache *state)
{
unsigned long start_pfn, end_pfn;
int nid;
/*
* NOTE: The following SMP-unsafe globals are only used early in boot
* when the kernel is running single-threaded.
*/
static unsigned long __meminitdata last_start_pfn, last_end_pfn;
static int __meminitdata last_nid;
if (last_start_pfn <= pfn && pfn < last_end_pfn)
return last_nid;
if (state->last_start <= pfn && pfn < state->last_end)
return state->last_nid;
nid = memblock_search_pfn_nid(pfn, &start_pfn, &end_pfn);
if (nid != -1) {
last_start_pfn = start_pfn;
last_end_pfn = end_pfn;
last_nid = nid;
state->last_start = start_pfn;
state->last_end = end_pfn;
state->last_nid = nid;
}
return nid;
}
#endif /* CONFIG_HAVE_ARCH_EARLY_PFN_TO_NID */
int __meminit early_pfn_to_nid(unsigned long pfn)
{
int nid;
nid = __early_pfn_to_nid(pfn);
if (nid >= 0)
return nid;
/* just returns 0 */
return 0;
}
#ifdef CONFIG_NODES_SPAN_OTHER_NODES
bool __meminit early_pfn_in_nid(unsigned long pfn, int node)
{
int nid;
nid = __early_pfn_to_nid(pfn);
if (nid >= 0 && nid != node)
return false;
return true;
}
#endif
/**
* free_bootmem_with_active_regions - Call memblock_free_early_nid for each active range
* @nid: The node to free memory on. If MAX_NUMNODES, all nodes are freed.
@ -5090,6 +5421,7 @@ void __paginginit free_area_init_node(int nid, unsigned long *zones_size,
/* pg_data_t should be reset to zero when it's allocated */
WARN_ON(pgdat->nr_zones || pgdat->classzone_idx);
reset_deferred_meminit(pgdat);
pgdat->node_id = nid;
pgdat->node_start_pfn = node_start_pfn;
#ifdef CONFIG_HAVE_MEMBLOCK_NODE_MAP

1
scripts/gdb/linux/dmesg.py
View File

@ -12,7 +12,6 @@
#
import gdb
import string
from linux import utils

92
scripts/gdb/linux/lists.py Normal file
View File

@ -0,0 +1,92 @@
#
# gdb helper commands and functions for Linux kernel debugging
#
# list tools
#
# Copyright (c) Thiebaud Weksteen, 2015
#
# Authors:
# Thiebaud Weksteen <thiebaud@weksteen.fr>
#
# This work is licensed under the terms of the GNU GPL version 2.
#
import gdb
from linux import utils
list_head = utils.CachedType("struct list_head")
def list_check(head):
nb = 0
if (head.type == list_head.get_type().pointer()):
head = head.dereference()
elif (head.type != list_head.get_type()):
raise gdb.GdbError('argument must be of type (struct list_head [*])')
c = head
try:
gdb.write("Starting with: {}\n".format(c))
except gdb.MemoryError:
gdb.write('head is not accessible\n')
return
while True:
p = c['prev'].dereference()
n = c['next'].dereference()
try:
if p['next'] != c.address:
gdb.write('prev.next != current: '
'current@{current_addr}={current} '
'prev@{p_addr}={p}\n'.format(
current_addr=c.address,
current=c,
p_addr=p.address,
p=p,
))
return
except gdb.MemoryError:
gdb.write('prev is not accessible: '
'current@{current_addr}={current}\n'.format(
current_addr=c.address,
current=c
))
return
try:
if n['prev'] != c.address:
gdb.write('next.prev != current: '
'current@{current_addr}={current} '
'next@{n_addr}={n}\n'.format(
current_addr=c.address,
current=c,
n_addr=n.address,
n=n,
))
return
except gdb.MemoryError:
gdb.write('next is not accessible: '
'current@{current_addr}={current}\n'.format(
current_addr=c.address,
current=c
))
return
c = n
nb += 1
if c == head:
gdb.write("list is consistent: {} node(s)\n".format(nb))
return
class LxListChk(gdb.Command):
"""Verify a list consistency"""
def __init__(self):
super(LxListChk, self).__init__("lx-list-check", gdb.COMMAND_DATA,
gdb.COMPLETE_EXPRESSION)
def invoke(self, arg, from_tty):
argv = gdb.string_to_argv(arg)
if len(argv) != 1:
raise gdb.GdbError("lx-list-check takes one argument")
list_check(gdb.parse_and_eval(argv[0]))
LxListChk()

9
scripts/gdb/linux/symbols.py
View File

@ -14,9 +14,8 @@
import gdb
import os
import re
import string
from linux import modules, utils
from linux import modules
if hasattr(gdb, 'Breakpoint'):
@ -97,7 +96,7 @@ lx-symbols command."""
return ""
attrs = sect_attrs['attrs']
section_name_to_address = {
attrs[n]['name'].string() : attrs[n]['address']
attrs[n]['name'].string(): attrs[n]['address']
for n in range(int(sect_attrs['nsections']))}
args = []
for section_name in [".data", ".data..read_mostly", ".rodata", ".bss"]:
@ -124,7 +123,7 @@ lx-symbols command."""
addr=module_addr,
sections=self._section_arguments(module))
gdb.execute(cmdline, to_string=True)
if not module_name in self.loaded_modules:
if module_name not in self.loaded_modules:
self.loaded_modules.append(module_name)
else:
gdb.write("no module object found for '{0}'\n".format(module_name))
@ -164,7 +163,7 @@ lx-symbols command."""
self.load_all_symbols()
if hasattr(gdb, 'Breakpoint'):
if not self.breakpoint is None:
if self.breakpoint is not None:
self.breakpoint.delete()
self.breakpoint = None
self.breakpoint = LoadModuleBreakpoint(

20
scripts/gdb/linux/tasks.py
View File

@ -18,8 +18,8 @@ from linux import utils
task_type = utils.CachedType("struct task_struct")
def task_lists():
global task_type
task_ptr_type = task_type.get_type().pointer()
init_task = gdb.parse_and_eval("init_task").address
t = g = init_task
@ -38,6 +38,7 @@ def task_lists():
if t == init_task:
return
def get_task_by_pid(pid):
for task in task_lists():
if int(task['pid']) == pid:
@ -65,13 +66,28 @@ return that task_struct variable which PID matches."""
LxTaskByPidFunc()
class LxPs(gdb.Command):
"""Dump Linux tasks."""
def __init__(self):
super(LxPs, self).__init__("lx-ps", gdb.COMMAND_DATA)
def invoke(self, arg, from_tty):
for task in task_lists():
gdb.write("{address} {pid} {comm}\n".format(
address=task,
pid=task["pid"],
comm=task["comm"].string()))
LxPs()
thread_info_type = utils.CachedType("struct thread_info")
ia64_task_size = None
def get_thread_info(task):
global thread_info_type
thread_info_ptr_type = thread_info_type.get_type().pointer()
if utils.is_target_arch("ia64"):
global ia64_task_size

4
scripts/gdb/linux/utils.py
View File

@ -83,7 +83,7 @@ def get_target_endianness():
elif "big endian" in endian:
target_endianness = BIG_ENDIAN
else:
raise gdb.GdgError("unknown endianness '{0}'".format(str(endian)))
raise gdb.GdbError("unknown endianness '{0}'".format(str(endian)))
return target_endianness
@ -151,6 +151,6 @@ def get_gdbserver_type():
gdbserver_type = GDBSERVER_QEMU
elif probe_kgdb():
gdbserver_type = GDBSERVER_KGDB
if not gdbserver_type is None and hasattr(gdb, 'events'):
if gdbserver_type is not None and hasattr(gdb, 'events'):
gdb.events.exited.connect(exit_handler)
return gdbserver_type

1
scripts/gdb/vmlinux-gdb.py
View File

@ -28,3 +28,4 @@ else:
import linux.dmesg
import linux.tasks
import linux.cpus
import linux.lists

2
sound/core/memalloc.c
View File

@ -124,7 +124,7 @@ static void snd_malloc_dev_iram(struct snd_dma_buffer *dmab, size_t size)
dmab->addr = 0;
if (dev->of_node)
pool = of_get_named_gen_pool(dev->of_node, "iram", 0);
pool = of_gen_pool_get(dev->of_node, "iram", 0);
if (!pool)
return;