summaryrefslogtreecommitdiffstats
path: root/mm
diff options
context:
space:
mode:
Diffstat (limited to 'mm')
-rw-r--r--mm/Kconfig3
-rw-r--r--mm/Makefile2
-rw-r--r--mm/backing-dev.c18
-rw-r--r--mm/bootmem.c24
-rw-r--r--mm/highmem.c7
-rw-r--r--mm/memblock.c541
-rw-r--r--mm/memory-failure.c33
-rw-r--r--mm/memory.c16
-rw-r--r--mm/mmap.c6
-rw-r--r--mm/page-writeback.c3
-rw-r--r--mm/page_alloc.c8
-rw-r--r--mm/page_cgroup.c7
-rw-r--r--mm/percpu.c85
-rw-r--r--mm/slab.c3
-rw-r--r--mm/slob.c14
-rw-r--r--mm/slub.c87
-rw-r--r--mm/vmalloc.c2
-rw-r--r--mm/vmscan.c10
18 files changed, 755 insertions, 114 deletions
diff --git a/mm/Kconfig b/mm/Kconfig
index 527136b2238..f4e516e9c37 100644
--- a/mm/Kconfig
+++ b/mm/Kconfig
@@ -128,6 +128,9 @@ config SPARSEMEM_VMEMMAP
pfn_to_page and page_to_pfn operations. This is the most
efficient option when sufficient kernel resources are available.
+config HAVE_MEMBLOCK
+ boolean
+
# eventually, we can have this option just 'select SPARSEMEM'
config MEMORY_HOTPLUG
bool "Allow for memory hot-add"
diff --git a/mm/Makefile b/mm/Makefile
index 8982504bd03..34b2546a9e3 100644
--- a/mm/Makefile
+++ b/mm/Makefile
@@ -15,6 +15,8 @@ obj-y := bootmem.o filemap.o mempool.o oom_kill.o fadvise.o \
$(mmu-y)
obj-y += init-mm.o
+obj-$(CONFIG_HAVE_MEMBLOCK) += memblock.o
+
obj-$(CONFIG_BOUNCE) += bounce.o
obj-$(CONFIG_SWAP) += page_io.o swap_state.o swapfile.o thrash.o
obj-$(CONFIG_HAS_DMA) += dmapool.o
diff --git a/mm/backing-dev.c b/mm/backing-dev.c
index 660a87a2251..f9fd3dd3916 100644
--- a/mm/backing-dev.c
+++ b/mm/backing-dev.c
@@ -104,15 +104,13 @@ static int bdi_debug_stats_show(struct seq_file *m, void *v)
"b_more_io: %8lu\n"
"bdi_list: %8u\n"
"state: %8lx\n"
- "wb_mask: %8lx\n"
- "wb_list: %8u\n"
- "wb_cnt: %8u\n",
+ "wb_list: %8u\n",
(unsigned long) K(bdi_stat(bdi, BDI_WRITEBACK)),
(unsigned long) K(bdi_stat(bdi, BDI_RECLAIMABLE)),
K(bdi_thresh), K(dirty_thresh),
K(background_thresh), nr_wb, nr_dirty, nr_io, nr_more_io,
- !list_empty(&bdi->bdi_list), bdi->state, bdi->wb_mask,
- !list_empty(&bdi->wb_list), bdi->wb_cnt);
+ !list_empty(&bdi->bdi_list), bdi->state,
+ !list_empty(&bdi->wb_list));
#undef K
return 0;
@@ -340,14 +338,13 @@ int bdi_has_dirty_io(struct backing_dev_info *bdi)
static void bdi_flush_io(struct backing_dev_info *bdi)
{
struct writeback_control wbc = {
- .bdi = bdi,
.sync_mode = WB_SYNC_NONE,
.older_than_this = NULL,
.range_cyclic = 1,
.nr_to_write = 1024,
};
- writeback_inodes_wbc(&wbc);
+ writeback_inodes_wb(&bdi->wb, &wbc);
}
/*
@@ -668,19 +665,12 @@ int bdi_init(struct backing_dev_info *bdi)
bdi->max_ratio = 100;
bdi->max_prop_frac = PROP_FRAC_BASE;
spin_lock_init(&bdi->wb_lock);
- INIT_RCU_HEAD(&bdi->rcu_head);
INIT_LIST_HEAD(&bdi->bdi_list);
INIT_LIST_HEAD(&bdi->wb_list);
INIT_LIST_HEAD(&bdi->work_list);
bdi_wb_init(&bdi->wb, bdi);
- /*
- * Just one thread support for now, hard code mask and count
- */
- bdi->wb_mask = 1;
- bdi->wb_cnt = 1;
-
for (i = 0; i < NR_BDI_STAT_ITEMS; i++) {
err = percpu_counter_init(&bdi->bdi_stat[i], 0);
if (err)
diff --git a/mm/bootmem.c b/mm/bootmem.c
index 58c66cc5056..142c84a5499 100644
--- a/mm/bootmem.c
+++ b/mm/bootmem.c
@@ -833,15 +833,24 @@ static void * __init ___alloc_bootmem_node(bootmem_data_t *bdata,
void * __init __alloc_bootmem_node(pg_data_t *pgdat, unsigned long size,
unsigned long align, unsigned long goal)
{
+ void *ptr;
+
if (WARN_ON_ONCE(slab_is_available()))
return kzalloc_node(size, GFP_NOWAIT, pgdat->node_id);
#ifdef CONFIG_NO_BOOTMEM
- return __alloc_memory_core_early(pgdat->node_id, size, align,
+ ptr = __alloc_memory_core_early(pgdat->node_id, size, align,
+ goal, -1ULL);
+ if (ptr)
+ return ptr;
+
+ ptr = __alloc_memory_core_early(MAX_NUMNODES, size, align,
goal, -1ULL);
#else
- return ___alloc_bootmem_node(pgdat->bdata, size, align, goal, 0);
+ ptr = ___alloc_bootmem_node(pgdat->bdata, size, align, goal, 0);
#endif
+
+ return ptr;
}
void * __init __alloc_bootmem_node_high(pg_data_t *pgdat, unsigned long size,
@@ -977,14 +986,21 @@ void * __init __alloc_bootmem_low(unsigned long size, unsigned long align,
void * __init __alloc_bootmem_low_node(pg_data_t *pgdat, unsigned long size,
unsigned long align, unsigned long goal)
{
+ void *ptr;
+
if (WARN_ON_ONCE(slab_is_available()))
return kzalloc_node(size, GFP_NOWAIT, pgdat->node_id);
#ifdef CONFIG_NO_BOOTMEM
- return __alloc_memory_core_early(pgdat->node_id, size, align,
+ ptr = __alloc_memory_core_early(pgdat->node_id, size, align,
+ goal, ARCH_LOW_ADDRESS_LIMIT);
+ if (ptr)
+ return ptr;
+ ptr = __alloc_memory_core_early(MAX_NUMNODES, size, align,
goal, ARCH_LOW_ADDRESS_LIMIT);
#else
- return ___alloc_bootmem_node(pgdat->bdata, size, align,
+ ptr = ___alloc_bootmem_node(pgdat->bdata, size, align,
goal, ARCH_LOW_ADDRESS_LIMIT);
#endif
+ return ptr;
}
diff --git a/mm/highmem.c b/mm/highmem.c
index 66baa20f78f..7a0aa1be499 100644
--- a/mm/highmem.c
+++ b/mm/highmem.c
@@ -26,6 +26,7 @@
#include <linux/init.h>
#include <linux/hash.h>
#include <linux/highmem.h>
+#include <linux/kgdb.h>
#include <asm/tlbflush.h>
/*
@@ -470,6 +471,12 @@ void debug_kmap_atomic(enum km_type type)
warn_count--;
}
}
+#ifdef CONFIG_KGDB_KDB
+ if (unlikely(type == KM_KDB && atomic_read(&kgdb_active) == -1)) {
+ WARN_ON(1);
+ warn_count--;
+ }
+#endif /* CONFIG_KGDB_KDB */
}
#endif
diff --git a/mm/memblock.c b/mm/memblock.c
new file mode 100644
index 00000000000..3024eb30fc2
--- /dev/null
+++ b/mm/memblock.c
@@ -0,0 +1,541 @@
+/*
+ * Procedures for maintaining information about logical memory blocks.
+ *
+ * Peter Bergner, IBM Corp. June 2001.
+ * Copyright (C) 2001 Peter Bergner.
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License
+ * as published by the Free Software Foundation; either version
+ * 2 of the License, or (at your option) any later version.
+ */
+
+#include <linux/kernel.h>
+#include <linux/init.h>
+#include <linux/bitops.h>
+#include <linux/memblock.h>
+
+#define MEMBLOCK_ALLOC_ANYWHERE 0
+
+struct memblock memblock;
+
+static int memblock_debug;
+
+static int __init early_memblock(char *p)
+{
+ if (p && strstr(p, "debug"))
+ memblock_debug = 1;
+ return 0;
+}
+early_param("memblock", early_memblock);
+
+static void memblock_dump(struct memblock_region *region, char *name)
+{
+ unsigned long long base, size;
+ int i;
+
+ pr_info(" %s.cnt = 0x%lx\n", name, region->cnt);
+
+ for (i = 0; i < region->cnt; i++) {
+ base = region->region[i].base;
+ size = region->region[i].size;
+
+ pr_info(" %s[0x%x]\t0x%016llx - 0x%016llx, 0x%llx bytes\n",
+ name, i, base, base + size - 1, size);
+ }
+}
+
+void memblock_dump_all(void)
+{
+ if (!memblock_debug)
+ return;
+
+ pr_info("MEMBLOCK configuration:\n");
+ pr_info(" rmo_size = 0x%llx\n", (unsigned long long)memblock.rmo_size);
+ pr_info(" memory.size = 0x%llx\n", (unsigned long long)memblock.memory.size);
+
+ memblock_dump(&memblock.memory, "memory");
+ memblock_dump(&memblock.reserved, "reserved");
+}
+
+static unsigned long memblock_addrs_overlap(u64 base1, u64 size1, u64 base2,
+ u64 size2)
+{
+ return ((base1 < (base2 + size2)) && (base2 < (base1 + size1)));
+}
+
+static long memblock_addrs_adjacent(u64 base1, u64 size1, u64 base2, u64 size2)
+{
+ if (base2 == base1 + size1)
+ return 1;
+ else if (base1 == base2 + size2)
+ return -1;
+
+ return 0;
+}
+
+static long memblock_regions_adjacent(struct memblock_region *rgn,
+ unsigned long r1, unsigned long r2)
+{
+ u64 base1 = rgn->region[r1].base;
+ u64 size1 = rgn->region[r1].size;
+ u64 base2 = rgn->region[r2].base;
+ u64 size2 = rgn->region[r2].size;
+
+ return memblock_addrs_adjacent(base1, size1, base2, size2);
+}
+
+static void memblock_remove_region(struct memblock_region *rgn, unsigned long r)
+{
+ unsigned long i;
+
+ for (i = r; i < rgn->cnt - 1; i++) {
+ rgn->region[i].base = rgn->region[i + 1].base;
+ rgn->region[i].size = rgn->region[i + 1].size;
+ }
+ rgn->cnt--;
+}
+
+/* Assumption: base addr of region 1 < base addr of region 2 */
+static void memblock_coalesce_regions(struct memblock_region *rgn,
+ unsigned long r1, unsigned long r2)
+{
+ rgn->region[r1].size += rgn->region[r2].size;
+ memblock_remove_region(rgn, r2);
+}
+
+void __init memblock_init(void)
+{
+ /* Create a dummy zero size MEMBLOCK which will get coalesced away later.
+ * This simplifies the memblock_add() code below...
+ */
+ memblock.memory.region[0].base = 0;
+ memblock.memory.region[0].size = 0;
+ memblock.memory.cnt = 1;
+
+ /* Ditto. */
+ memblock.reserved.region[0].base = 0;
+ memblock.reserved.region[0].size = 0;
+ memblock.reserved.cnt = 1;
+}
+
+void __init memblock_analyze(void)
+{
+ int i;
+
+ memblock.memory.size = 0;
+
+ for (i = 0; i < memblock.memory.cnt; i++)
+ memblock.memory.size += memblock.memory.region[i].size;
+}
+
+static long memblock_add_region(struct memblock_region *rgn, u64 base, u64 size)
+{
+ unsigned long coalesced = 0;
+ long adjacent, i;
+
+ if ((rgn->cnt == 1) && (rgn->region[0].size == 0)) {
+ rgn->region[0].base = base;
+ rgn->region[0].size = size;
+ return 0;
+ }
+
+ /* First try and coalesce this MEMBLOCK with another. */
+ for (i = 0; i < rgn->cnt; i++) {
+ u64 rgnbase = rgn->region[i].base;
+ u64 rgnsize = rgn->region[i].size;
+
+ if ((rgnbase == base) && (rgnsize == size))
+ /* Already have this region, so we're done */
+ return 0;
+
+ adjacent = memblock_addrs_adjacent(base, size, rgnbase, rgnsize);
+ if (adjacent > 0) {
+ rgn->region[i].base -= size;
+ rgn->region[i].size += size;
+ coalesced++;
+ break;
+ } else if (adjacent < 0) {
+ rgn->region[i].size += size;
+ coalesced++;
+ break;
+ }
+ }
+
+ if ((i < rgn->cnt - 1) && memblock_regions_adjacent(rgn, i, i+1)) {
+ memblock_coalesce_regions(rgn, i, i+1);
+ coalesced++;
+ }
+
+ if (coalesced)
+ return coalesced;
+ if (rgn->cnt >= MAX_MEMBLOCK_REGIONS)
+ return -1;
+
+ /* Couldn't coalesce the MEMBLOCK, so add it to the sorted table. */
+ for (i = rgn->cnt - 1; i >= 0; i--) {
+ if (base < rgn->region[i].base) {
+ rgn->region[i+1].base = rgn->region[i].base;
+ rgn->region[i+1].size = rgn->region[i].size;
+ } else {
+ rgn->region[i+1].base = base;
+ rgn->region[i+1].size = size;
+ break;
+ }
+ }
+
+ if (base < rgn->region[0].base) {
+ rgn->region[0].base = base;
+ rgn->region[0].size = size;
+ }
+ rgn->cnt++;
+
+ return 0;
+}
+
+long memblock_add(u64 base, u64 size)
+{
+ struct memblock_region *_rgn = &memblock.memory;
+
+ /* On pSeries LPAR systems, the first MEMBLOCK is our RMO region. */
+ if (base == 0)
+ memblock.rmo_size = size;
+
+ return memblock_add_region(_rgn, base, size);
+
+}
+
+static long __memblock_remove(struct memblock_region *rgn, u64 base, u64 size)
+{
+ u64 rgnbegin, rgnend;
+ u64 end = base + size;
+ int i;
+
+ rgnbegin = rgnend = 0; /* supress gcc warnings */
+
+ /* Find the region where (base, size) belongs to */
+ for (i=0; i < rgn->cnt; i++) {
+ rgnbegin = rgn->region[i].base;
+ rgnend = rgnbegin + rgn->region[i].size;
+
+ if ((rgnbegin <= base) && (end <= rgnend))
+ break;
+ }
+
+ /* Didn't find the region */
+ if (i == rgn->cnt)
+ return -1;
+
+ /* Check to see if we are removing entire region */
+ if ((rgnbegin == base) && (rgnend == end)) {
+ memblock_remove_region(rgn, i);
+ return 0;
+ }
+
+ /* Check to see if region is matching at the front */
+ if (rgnbegin == base) {
+ rgn->region[i].base = end;
+ rgn->region[i].size -= size;
+ return 0;
+ }
+
+ /* Check to see if the region is matching at the end */
+ if (rgnend == end) {
+ rgn->region[i].size -= size;
+ return 0;
+ }
+
+ /*
+ * We need to split the entry - adjust the current one to the
+ * beginging of the hole and add the region after hole.
+ */
+ rgn->region[i].size = base - rgn->region[i].base;
+ return memblock_add_region(rgn, end, rgnend - end);
+}
+
+long memblock_remove(u64 base, u64 size)
+{
+ return __memblock_remove(&memblock.memory, base, size);
+}
+
+long __init memblock_free(u64 base, u64 size)
+{
+ return __memblock_remove(&memblock.reserved, base, size);
+}
+
+long __init memblock_reserve(u64 base, u64 size)
+{
+ struct memblock_region *_rgn = &memblock.reserved;
+
+ BUG_ON(0 == size);
+
+ return memblock_add_region(_rgn, base, size);
+}
+
+long memblock_overlaps_region(struct memblock_region *rgn, u64 base, u64 size)
+{
+ unsigned long i;
+
+ for (i = 0; i < rgn->cnt; i++) {
+ u64 rgnbase = rgn->region[i].base;
+ u64 rgnsize = rgn->region[i].size;
+ if (memblock_addrs_overlap(base, size, rgnbase, rgnsize))
+ break;
+ }
+
+ return (i < rgn->cnt) ? i : -1;
+}
+
+static u64 memblock_align_down(u64 addr, u64 size)
+{
+ return addr & ~(size - 1);
+}
+
+static u64 memblock_align_up(u64 addr, u64 size)
+{
+ return (addr + (size - 1)) & ~(size - 1);
+}
+
+static u64 __init memblock_alloc_nid_unreserved(u64 start, u64 end,
+ u64 size, u64 align)
+{
+ u64 base, res_base;
+ long j;
+
+ base = memblock_align_down((end - size), align);
+ while (start <= base) {
+ j = memblock_overlaps_region(&memblock.reserved, base, size);
+ if (j < 0) {
+ /* this area isn't reserved, take it */
+ if (memblock_add_region(&memblock.reserved, base, size) < 0)
+ base = ~(u64)0;
+ return base;
+ }
+ res_base = memblock.reserved.region[j].base;
+ if (res_base < size)
+ break;
+ base = memblock_align_down(res_base - size, align);
+ }
+
+ return ~(u64)0;
+}
+
+static u64 __init memblock_alloc_nid_region(struct memblock_property *mp,
+ u64 (*nid_range)(u64, u64, int *),
+ u64 size, u64 align, int nid)
+{
+ u64 start, end;
+
+ start = mp->base;
+ end = start + mp->size;
+
+ start = memblock_align_up(start, align);
+ while (start < end) {
+ u64 this_end;
+ int this_nid;
+
+ this_end = nid_range(start, end, &this_nid);
+ if (this_nid == nid) {
+ u64 ret = memblock_alloc_nid_unreserved(start, this_end,
+ size, align);
+ if (ret != ~(u64)0)
+ return ret;
+ }
+ start = this_end;
+ }
+
+ return ~(u64)0;
+}
+
+u64 __init memblock_alloc_nid(u64 size, u64 align, int nid,
+ u64 (*nid_range)(u64 start, u64 end, int *nid))
+{
+ struct memblock_region *mem = &memblock.memory;
+ int i;
+
+ BUG_ON(0 == size);
+
+ size = memblock_align_up(size, align);
+
+ for (i = 0; i < mem->cnt; i++) {
+ u64 ret = memblock_alloc_nid_region(&mem->region[i],
+ nid_range,
+ size, align, nid);
+ if (ret != ~(u64)0)
+ return ret;
+ }
+
+ return memblock_alloc(size, align);
+}
+
+u64 __init memblock_alloc(u64 size, u64 align)
+{
+ return memblock_alloc_base(size, align, MEMBLOCK_ALLOC_ANYWHERE);
+}
+
+u64 __init memblock_alloc_base(u64 size, u64 align, u64 max_addr)
+{
+ u64 alloc;
+
+ alloc = __memblock_alloc_base(size, align, max_addr);
+
+ if (alloc == 0)
+ panic("ERROR: Failed to allocate 0x%llx bytes below 0x%llx.\n",
+ (unsigned long long) size, (unsigned long long) max_addr);
+
+ return alloc;
+}
+
+u64 __init __memblock_alloc_base(u64 size, u64 align, u64 max_addr)
+{
+ long i, j;
+ u64 base = 0;
+ u64 res_base;
+
+ BUG_ON(0 == size);
+
+ size = memblock_align_up(size, align);
+
+ /* On some platforms, make sure we allocate lowmem */
+ /* Note that MEMBLOCK_REAL_LIMIT may be MEMBLOCK_ALLOC_ANYWHERE */
+ if (max_addr == MEMBLOCK_ALLOC_ANYWHERE)
+ max_addr = MEMBLOCK_REAL_LIMIT;
+
+ for (i = memblock.memory.cnt - 1; i >= 0; i--) {
+ u64 memblockbase = memblock.memory.region[i].base;
+ u64 memblocksize = memblock.memory.region[i].size;
+
+ if (memblocksize < size)
+ continue;
+ if (max_addr == MEMBLOCK_ALLOC_ANYWHERE)
+ base = memblock_align_down(memblockbase + memblocksize - size, align);
+ else if (memblockbase < max_addr) {
+ base = min(memblockbase + memblocksize, max_addr);
+ base = memblock_align_down(base - size, align);
+ } else
+ continue;
+
+ while (base && memblockbase <= base) {
+ j = memblock_overlaps_region(&memblock.reserved, base, size);
+ if (j < 0) {
+ /* this area isn't reserved, take it */
+ if (memblock_add_region(&memblock.reserved, base, size) < 0)
+ return 0;
+ return base;
+ }
+ res_base = memblock.reserved.region[j].base;
+ if (res_base < size)
+ break;
+ base = memblock_align_down(res_base - size, align);
+ }
+ }
+ return 0;
+}
+
+/* You must call memblock_analyze() before this. */
+u64 __init memblock_phys_mem_size(void)
+{
+ return memblock.memory.size;
+}
+
+u64 memblock_end_of_DRAM(void)
+{
+ int idx = memblock.memory.cnt - 1;
+
+ return (memblock.memory.region[idx].base + memblock.memory.region[idx].size);
+}
+
+/* You must call memblock_analyze() after this. */
+void __init memblock_enforce_memory_limit(u64 memory_limit)
+{
+ unsigned long i;
+ u64 limit;
+ struct memblock_property *p;
+
+ if (!memory_limit)
+ return;
+
+ /* Truncate the memblock regions to satisfy the memory limit. */
+ limit = memory_limit;
+ for (i = 0; i < memblock.memory.cnt; i++) {
+ if (limit > memblock.memory.region[i].size) {
+ limit -= memblock.memory.region[i].size;
+ continue;
+ }
+
+ memblock.memory.region[i].size = limit;
+ memblock.memory.cnt = i + 1;
+ break;
+ }
+
+ if (memblock.memory.region[0].size < memblock.rmo_size)
+ memblock.rmo_size = memblock.memory.region[0].size;
+
+ memory_limit = memblock_end_of_DRAM();
+
+ /* And truncate any reserves above the limit also. */
+ for (i = 0; i < memblock.reserved.cnt; i++) {
+ p = &memblock.reserved.region[i];
+
+ if (p->base > memory_limit)
+ p->size = 0;
+ else if ((p->base + p->size) > memory_limit)
+ p->size = memory_limit - p->base;
+
+ if (p->size == 0) {
+ memblock_remove_region(&memblock.reserved, i);
+ i--;
+ }
+ }
+}
+
+int __init memblock_is_reserved(u64 addr)
+{
+ int i;
+
+ for (i = 0; i < memblock.reserved.cnt; i++) {
+ u64 upper = memblock.reserved.region[i].base +
+ memblock.reserved.region[i].size - 1;
+ if ((addr >= memblock.reserved.region[i].base) && (addr <= upper))
+ return 1;
+ }
+ return 0;
+}
+
+int memblock_is_region_reserved(u64 base, u64 size)
+{
+ return memblock_overlaps_region(&memblock.reserved, base, size);
+}
+
+/*
+ * Given a <base, len>, find which memory regions belong to this range.
+ * Adjust the request and return a contiguous chunk.
+ */
+int memblock_find(struct memblock_property *res)
+{
+ int i;
+ u64 rstart, rend;
+
+ rstart = res->base;
+ rend = rstart + res->size - 1;
+
+ for (i = 0; i < memblock.memory.cnt; i++) {
+ u64 start = memblock.memory.region[i].base;
+ u64 end = start + memblock.memory.region[i].size - 1;
+
+ if (start > rend)
+ return -1;
+
+ if ((end >= rstart) && (start < rend)) {
+ /* adjust the request */
+ if (rstart < start)
+ rstart = start;
+ if (rend > end)
+ rend = end;
+ res->base = rstart;
+ res->size = rend - rstart + 1;
+ return 0;
+ }
+ }
+ return -1;
+}
diff --git a/mm/memory-failure.c b/mm/memory-failure.c
index 620b0b46159..6b44e52caca 100644
--- a/mm/memory-failure.c
+++ b/mm/memory-failure.c
@@ -45,6 +45,7 @@
#include <linux/page-isolation.h>
#include <linux/suspend.h>
#include <linux/slab.h>
+#include <linux/swapops.h>
#include "internal.h"
int sysctl_memory_failure_early_kill __read_mostly = 0;
@@ -1296,3 +1297,35 @@ done:
/* keep elevated page count for bad page */
return ret;
}
+
+/*
+ * The caller must hold current->mm->mmap_sem in read mode.
+ */
+int is_hwpoison_address(unsigned long addr)
+{
+ pgd_t *pgdp;
+ pud_t pud, *pudp;
+ pmd_t pmd, *pmdp;
+ pte_t pte, *ptep;
+ swp_entry_t entry;
+
+ pgdp = pgd_offset(current->mm, addr);
+ if (!pgd_present(*pgdp))
+ return 0;
+ pudp = pud_offset(pgdp, addr);
+ pud = *pudp;
+ if (!pud_present(pud) || pud_large(pud))
+ return 0;
+ pmdp = pmd_offset(pudp, addr);
+ pmd = *pmdp;
+ if (!pmd_present(pmd) || pmd_large(pmd))
+ return 0;
+ ptep = pte_offset_map(pmdp, addr);
+ pte = *ptep;
+ pte_unmap(ptep);
+ if (!is_swap_pte(pte))
+ return 0;
+ entry = pte_to_swp_entry(pte);
+ return is_hwpoison_entry(entry);
+}
+EXPORT_SYMBOL_GPL(is_hwpoison_address);
diff --git a/mm/memory.c b/mm/memory.c
index 119b7ccdf39..bde42c6d363 100644
--- a/mm/memory.c
+++ b/mm/memory.c
@@ -1394,10 +1394,20 @@ int __get_user_pages(struct task_struct *tsk, struct mm_struct *mm,
return i ? : -EFAULT;
}
if (pages) {
- struct page *page = vm_normal_page(gate_vma, start, *pte);
+ struct page *page;
+
+ page = vm_normal_page(gate_vma, start, *pte);
+ if (!page) {
+ if (!(gup_flags & FOLL_DUMP) &&
+ is_zero_pfn(pte_pfn(*pte)))
+ page = pte_page(*pte);
+ else {
+ pte_unmap(pte);
+ return i ? : -EFAULT;
+ }
+ }
pages[i] = page;
- if (page)
- get_page(page);
+ get_page(page);
}
pte_unmap(pte);
if (vmas)
diff --git a/mm/mmap.c b/mm/mmap.c
index 456ec6f2788..e38e910cb75 100644
--- a/mm/mmap.c
+++ b/mm/mmap.c
@@ -1734,8 +1734,10 @@ int expand_upwards(struct vm_area_struct *vma, unsigned long address)
grow = (address - vma->vm_end) >> PAGE_SHIFT;
error = acct_stack_growth(vma, size, grow);
- if (!error)
+ if (!error) {
vma->vm_end = address;
+ perf_event_mmap(vma);
+ }
}
anon_vma_unlock(vma);
return error;
@@ -1781,6 +1783,7 @@ static int expand_downwards(struct vm_area_struct *vma,
if (!error) {
vma->vm_start = address;
vma->vm_pgoff -= grow;
+ perf_event_mmap(vma);
}
}
anon_vma_unlock(vma);
@@ -2208,6 +2211,7 @@ unsigned long do_brk(unsigned long addr, unsigned long len)
vma->vm_page_prot = vm_get_page_prot(flags);
vma_link(mm, vma, prev, rb_link, rb_parent);
out:
+ perf_event_mmap(vma);
mm->total_vm += len >> PAGE_SHIFT;
if (flags & VM_LOCKED) {
if (!mlock_vma_pages_range(vma, addr, addr + len))
diff --git a/mm/page-writeback.c b/mm/page-writeback.c
index 54f28bd493d..37498ef6154 100644
--- a/mm/page-writeback.c
+++ b/mm/page-writeback.c
@@ -495,7 +495,6 @@ static void balance_dirty_pages(struct address_space *mapping,
for (;;) {
struct writeback_control wbc = {
- .bdi = bdi,
.sync_mode = WB_SYNC_NONE,
.older_than_this = NULL,
.nr_to_write = write_chunk,
@@ -537,7 +536,7 @@ static void balance_dirty_pages(struct address_space *mapping,
* up.
*/
if (bdi_nr_reclaimable > bdi_thresh) {
- writeback_inodes_wbc(&wbc);
+ writeback_inodes_wb(&bdi->wb, &wbc);
pages_written += write_chunk - wbc.nr_to_write;
get_dirty_limits(&background_thresh, &dirty_thresh,
&bdi_thresh, bdi);
diff --git a/mm/page_alloc.c b/mm/page_alloc.c
index 431214b941a..9bd339eb04c 100644
--- a/mm/page_alloc.c
+++ b/mm/page_alloc.c
@@ -3634,6 +3634,9 @@ void * __init __alloc_memory_core_early(int nid, u64 size, u64 align,
int i;
void *ptr;
+ if (limit > get_max_mapped())
+ limit = get_max_mapped();
+
/* need to go over early_node_map to find out good range for node */
for_each_active_range_index_in_nid(i, nid) {
u64 addr;
@@ -3659,6 +3662,11 @@ void * __init __alloc_memory_core_early(int nid, u64 size, u64 align,
ptr = phys_to_virt(addr);
memset(ptr, 0, size);
reserve_early_without_check(addr, addr + size, "BOOTMEM");
+ /*
+ * The min_count is set to 0 so that bootmem allocated blocks
+ * are never reported as leaks.
+ */
+ kmemleak_alloc(ptr, size, 0, 0);
return ptr;
}
diff --git a/mm/page_cgroup.c b/mm/page_cgroup.c
index 6c0081441a3..5bffada7cde 100644
--- a/mm/page_cgroup.c
+++ b/mm/page_cgroup.c
@@ -9,6 +9,7 @@
#include <linux/vmalloc.h>
#include <linux/cgroup.h>
#include <linux/swapops.h>
+#include <linux/kmemleak.h>
static void __meminit
__init_page_cgroup(struct page_cgroup *pc, unsigned long pfn)
@@ -126,6 +127,12 @@ static int __init_refok init_section_page_cgroup(unsigned long pfn)
if (!base)
base = vmalloc(table_size);
}
+ /*
+ * The value stored in section->page_cgroup is (base - pfn)
+ * and it does not point to the memory block allocated above,
+ * causing kmemleak false positives.
+ */
+ kmemleak_not_leak(base);
} else {
/*
* We don't have to allocate page_cgroup again, but
diff --git a/mm/percpu.c b/mm/percpu.c
index 6470e771023..e61dc2cc587 100644
--- a/mm/percpu.c
+++ b/mm/percpu.c
@@ -282,6 +282,9 @@ static void __maybe_unused pcpu_next_pop(struct pcpu_chunk *chunk,
*/
static void *pcpu_mem_alloc(size_t size)
{
+ if (WARN_ON_ONCE(!slab_is_available()))
+ return NULL;
+
if (size <= PAGE_SIZE)
return kzalloc(size, GFP_KERNEL);
else {
@@ -392,13 +395,6 @@ static int pcpu_extend_area_map(struct pcpu_chunk *chunk, int new_alloc)
old_size = chunk->map_alloc * sizeof(chunk->map[0]);
memcpy(new, chunk->map, old_size);
- /*
- * map_alloc < PCPU_DFL_MAP_ALLOC indicates that the chunk is
- * one of the first chunks and still using static map.
- */
- if (chunk->map_alloc >= PCPU_DFL_MAP_ALLOC)
- old = chunk->map;
-
chunk->map_alloc = new_alloc;
chunk->map = new;
new = NULL;
@@ -604,7 +600,7 @@ static struct pcpu_chunk *pcpu_alloc_chunk(void)
{
struct pcpu_chunk *chunk;
- chunk = kzalloc(pcpu_chunk_struct_size, GFP_KERNEL);
+ chunk = pcpu_mem_alloc(pcpu_chunk_struct_size);
if (!chunk)
return NULL;
@@ -1013,20 +1009,6 @@ phys_addr_t per_cpu_ptr_to_phys(void *addr)
return page_to_phys(pcpu_addr_to_page(addr));
}
-static inline size_t pcpu_calc_fc_sizes(size_t static_size,
- size_t reserved_size,
- ssize_t *dyn_sizep)
-{
- size_t size_sum;
-
- size_sum = PFN_ALIGN(static_size + reserved_size +
- (*dyn_sizep >= 0 ? *dyn_sizep : 0));
- if (*dyn_sizep != 0)
- *dyn_sizep = size_sum - static_size - reserved_size;
-
- return size_sum;
-}
-
/**
* pcpu_alloc_alloc_info - allocate percpu allocation info
* @nr_groups: the number of groups
@@ -1085,7 +1067,7 @@ void __init pcpu_free_alloc_info(struct pcpu_alloc_info *ai)
/**
* pcpu_build_alloc_info - build alloc_info considering distances between CPUs
* @reserved_size: the size of reserved percpu area in bytes
- * @dyn_size: free size for dynamic allocation in bytes, -1 for auto
+ * @dyn_size: minimum free size for dynamic allocation in bytes
* @atom_size: allocation atom size
* @cpu_distance_fn: callback to determine distance between cpus, optional
*
@@ -1103,8 +1085,8 @@ void __init pcpu_free_alloc_info(struct pcpu_alloc_info *ai)
* On success, pointer to the new allocation_info is returned. On
* failure, ERR_PTR value is returned.
*/
-struct pcpu_alloc_info * __init pcpu_build_alloc_info(
- size_t reserved_size, ssize_t dyn_size,
+static struct pcpu_alloc_info * __init pcpu_build_alloc_info(
+ size_t reserved_size, size_t dyn_size,
size_t atom_size,
pcpu_fc_cpu_distance_fn_t cpu_distance_fn)
{
@@ -1123,13 +1105,17 @@ struct pcpu_alloc_info * __init pcpu_build_alloc_info(
memset(group_map, 0, sizeof(group_map));
memset(group_cnt, 0, sizeof(group_cnt));
+ /* calculate size_sum and ensure dyn_size is enough for early alloc */
+ size_sum = PFN_ALIGN(static_size + reserved_size +
+ max_t(size_t, dyn_size, PERCPU_DYNAMIC_EARLY_SIZE));
+ dyn_size = size_sum - static_size - reserved_size;
+
/*
* Determine min_unit_size, alloc_size and max_upa such that
* alloc_size is multiple of atom_size and is the smallest
* which can accomodate 4k aligned segments which are equal to
* or larger than min_unit_size.
*/
- size_sum = pcpu_calc_fc_sizes(static_size, reserved_size, &dyn_size);
min_unit_size = max_t(size_t, size_sum, PCPU_MIN_UNIT_SIZE);
alloc_size = roundup(min_unit_size, atom_size);
@@ -1350,7 +1336,8 @@ int __init pcpu_setup_first_chunk(const struct pcpu_alloc_info *ai,
void *base_addr)
{
static char cpus_buf[4096] __initdata;
- static int smap[2], dmap[2];
+ static int smap[PERCPU_DYNAMIC_EARLY_SLOTS] __initdata;
+ static int dmap[PERCPU_DYNAMIC_EARLY_SLOTS] __initdata;
size_t dyn_size = ai->dyn_size;
size_t size_sum = ai->static_size + ai->reserved_size + dyn_size;
struct pcpu_chunk *schunk, *dchunk = NULL;
@@ -1373,14 +1360,13 @@ int __init pcpu_setup_first_chunk(const struct pcpu_alloc_info *ai,
} while (0)
/* sanity checks */
- BUILD_BUG_ON(ARRAY_SIZE(smap) >= PCPU_DFL_MAP_ALLOC ||
- ARRAY_SIZE(dmap) >= PCPU_DFL_MAP_ALLOC);
PCPU_SETUP_BUG_ON(ai->nr_groups <= 0);
PCPU_SETUP_BUG_ON(!ai->static_size);
PCPU_SETUP_BUG_ON(!base_addr);
PCPU_SETUP_BUG_ON(ai->unit_size < size_sum);
PCPU_SETUP_BUG_ON(ai->unit_size & ~PAGE_MASK);
PCPU_SETUP_BUG_ON(ai->unit_size < PCPU_MIN_UNIT_SIZE);
+ PCPU_SETUP_BUG_ON(ai->dyn_size < PERCPU_DYNAMIC_EARLY_SIZE);
PCPU_SETUP_BUG_ON(pcpu_verify_alloc_info(ai) < 0);
/* process group information and build config tables accordingly */
@@ -1532,7 +1518,7 @@ early_param("percpu_alloc", percpu_alloc_setup);
/**
* pcpu_embed_first_chunk - embed the first percpu chunk into bootmem
* @reserved_size: the size of reserved percpu area in bytes
- * @dyn_size: free size for dynamic allocation in bytes, -1 for auto
+ * @dyn_size: minimum free size for dynamic allocation in bytes
* @atom_size: allocation atom size
* @cpu_distance_fn: callback to determine distance between cpus, optional
* @alloc_fn: function to allocate percpu page
@@ -1553,10 +1539,7 @@ early_param("percpu_alloc", percpu_alloc_setup);
* vmalloc space is not orders of magnitude larger than distances
* between node memory addresses (ie. 32bit NUMA machines).
*
- * When @dyn_size is positive, dynamic area might be larger than
- * specified to fill page alignment. When @dyn_size is auto,
- * @dyn_size is just big enough to fill page alignment after static
- * and reserved areas.
+ * @dyn_size specifies the minimum dynamic area size.
*
* If the needed size is smaller than the minimum or specified unit
* size, the leftover is returned using @free_fn.
@@ -1564,7 +1547,7 @@ early_param("percpu_alloc", percpu_alloc_setup);
* RETURNS:
* 0 on success, -errno on failure.
*/
-int __init pcpu_embed_first_chunk(size_t reserved_size, ssize_t dyn_size,
+int __init pcpu_embed_first_chunk(size_t reserved_size, size_t dyn_size,
size_t atom_size,
pcpu_fc_cpu_distance_fn_t cpu_distance_fn,
pcpu_fc_alloc_fn_t alloc_fn,
@@ -1695,7 +1678,7 @@ int __init pcpu_page_first_chunk(size_t reserved_size,
snprintf(psize_str, sizeof(psize_str), "%luK", PAGE_SIZE >> 10);
- ai = pcpu_build_alloc_info(reserved_size, -1, PAGE_SIZE, NULL);
+ ai = pcpu_build_alloc_info(reserved_size, 0, PAGE_SIZE, NULL);
if (IS_ERR(ai))
return PTR_ERR(ai);
BUG_ON(ai->nr_groups != 1);
@@ -1821,3 +1804,33 @@ void __init setup_per_cpu_areas(void)
__per_cpu_offset[cpu] = delta + pcpu_unit_offsets[cpu];
}
#endif /* CONFIG_HAVE_SETUP_PER_CPU_AREA */
+
+/*
+ * First and reserved chunks are initialized with temporary allocation
+ * map in initdata so that they can be used before slab is online.
+ * This function is called after slab is brought up and replaces those
+ * with properly allocated maps.
+ */
+void __init percpu_init_late(void)
+{
+ struct pcpu_chunk *target_chunks[] =
+ { pcpu_first_chunk, pcpu_reserved_chunk, NULL };
+ struct pcpu_chunk *chunk;
+ unsigned long flags;
+ int i;
+
+ for (i = 0; (chunk = target_chunks[i]); i++) {
+ int *map;
+ const size_t size = PERCPU_DYNAMIC_EARLY_SLOTS * sizeof(map[0]);
+
+ BUILD_BUG_ON(size > PAGE_SIZE);
+
+ map = pcpu_mem_alloc(size);
+ BUG_ON(!map);
+
+ spin_lock_irqsave(&pcpu_lock, flags);
+ memcpy(map, chunk->map, size);
+ chunk->map = map;
+ spin_unlock_irqrestore(&pcpu_lock, flags);
+ }
+}
diff --git a/mm/slab.c b/mm/slab.c
index e49f8f46f46..736e497733d 100644
--- a/mm/slab.c
+++ b/mm/slab.c
@@ -102,7 +102,6 @@
#include <linux/cpu.h>
#include <linux/sysctl.h>
#include <linux/module.h>
-#include <linux/kmemtrace.h>
#include <linux/rcupdate.h>
#include <linux/string.h>
#include <linux/uaccess.h>
@@ -861,7 +860,7 @@ static void __cpuinit start_cpu_timer(int cpu)
*/
if (keventd_up() && reap_work->work.func == NULL) {
init_reap_node(cpu);
- INIT_DELAYED_WORK(reap_work, cache_reap);
+ INIT_DELAYED_WORK_DEFERRABLE(reap_work, cache_reap);
schedule_delayed_work_on(cpu, reap_work,
__round_jiffies_relative(HZ, cpu));
}
diff --git a/mm/slob.c b/mm/slob.c
index 23631e2bb57..d582171c810 100644
--- a/mm/slob.c
+++ b/mm/slob.c
@@ -66,8 +66,10 @@
#include <linux/module.h>
#include <linux/rcupdate.h>
#include <linux/list.h>
-#include <linux/kmemtrace.h>
#include <linux/kmemleak.h>
+
+#include <trace/events/kmem.h>
+
#include <asm/atomic.h>
/*
@@ -394,6 +396,7 @@ static void slob_free(void *block, int size)
slob_t *prev, *next, *b = (slob_t *)block;
slobidx_t units;
unsigned long flags;
+ struct list_head *slob_list;
if (unlikely(ZERO_OR_NULL_PTR(block)))
return;
@@ -422,7 +425,13 @@ static void slob_free(void *block, int size)
set_slob(b, units,
(void *)((unsigned long)(b +
SLOB_UNITS(PAGE_SIZE)) & PAGE_MASK));
- set_slob_page_free(sp, &free_slob_small);
+ if (size < SLOB_BREAK1)
+ slob_list = &free_slob_small;
+ else if (size < SLOB_BREAK2)
+ slob_list = &free_slob_medium;
+ else
+ slob_list = &free_slob_large;
+ set_slob_page_free(sp, slob_list);
goto out;
}
@@ -639,7 +648,6 @@ void kmem_cache_free(struct kmem_cache *c, void *b)
if (unlikely(c->flags & SLAB_DESTROY_BY_RCU)) {
struct slob_rcu *slob_rcu;
slob_rcu = b + (c->size - sizeof(struct slob_rcu));
- INIT_RCU_HEAD(&slob_rcu->head);
slob_rcu->size = c->size;
call_rcu(&slob_rcu->head, kmem_rcu_free);
} else {
diff --git a/mm/slub.c b/mm/slub.c
index 578f68f3c51..13fffe1f0f3 100644
--- a/mm/slub.c
+++ b/mm/slub.c
@@ -17,7 +17,6 @@
#include <linux/slab.h>
#include <linux/proc_fs.h>
#include <linux/seq_file.h>
-#include <linux/kmemtrace.h>
#include <linux/kmemcheck.h>
#include <linux/cpu.h>
#include <linux/cpuset.h>
@@ -107,11 +106,17 @@
* the fast path and disables lockless freelists.
*/
+#define SLAB_DEBUG_FLAGS (SLAB_RED_ZONE | SLAB_POISON | SLAB_STORE_USER | \
+ SLAB_TRACE | SLAB_DEBUG_FREE)
+
+static inline int kmem_cache_debug(struct kmem_cache *s)
+{
#ifdef CONFIG_SLUB_DEBUG
-#define SLABDEBUG 1
+ return unlikely(s->flags & SLAB_DEBUG_FLAGS);
#else
-#define SLABDEBUG 0
+ return 0;
#endif
+}
/*
* Issues still to be resolved:
@@ -162,8 +167,8 @@
#define MAX_OBJS_PER_PAGE 65535 /* since page.objects is u16 */
/* Internal SLUB flags */
-#define __OBJECT_POISON 0x80000000 /* Poison object */
-#define __SYSFS_ADD_DEFERRED 0x40000000 /* Not yet visible via sysfs */
+#define __OBJECT_POISON 0x80000000UL /* Poison object */
+#define __SYSFS_ADD_DEFERRED 0x40000000UL /* Not yet visible via sysfs */
static int kmem_size = sizeof(struct kmem_cache);
@@ -1073,7 +1078,7 @@ static inline struct page *alloc_slab_page(gfp_t flags, int node,
flags |= __GFP_NOTRACK;
- if (node == -1)
+ if (node == NUMA_NO_NODE)
return alloc_pages(flags, order);
else
return alloc_pages_exact_node(node, flags, order);
@@ -1157,9 +1162,6 @@ static struct page *new_slab(struct kmem_cache *s, gfp_t flags, int node)
inc_slabs_node(s, page_to_nid(page), page->objects);
page->slab = s;
page->flags |= 1 << PG_slab;
- if (s->flags & (SLAB_DEBUG_FREE | SLAB_RED_ZONE | SLAB_POISON |
- SLAB_STORE_USER | SLAB_TRACE))
- __SetPageSlubDebug(page);
start = page_address(page);
@@ -1186,14 +1188,13 @@ static void __free_slab(struct kmem_cache *s, struct page *page)
int order = compound_order(page);
int pages = 1 << order;
- if (unlikely(SLABDEBUG && PageSlubDebug(page))) {
+ if (kmem_cache_debug(s)) {
void *p;
slab_pad_check(s, page);
for_each_object(p, s, page_address(page),
page->objects)
check_object(s, page, p, 0);
- __ClearPageSlubDebug(page);
}
kmemcheck_free_shadow(page, compound_order(page));
@@ -1387,10 +1388,10 @@ static struct page *get_any_partial(struct kmem_cache *s, gfp_t flags)
static struct page *get_partial(struct kmem_cache *s, gfp_t flags, int node)
{
struct page *page;
- int searchnode = (node == -1) ? numa_node_id() : node;
+ int searchnode = (node == NUMA_NO_NODE) ? numa_node_id() : node;
page = get_partial_node(get_node(s, searchnode));
- if (page || (flags & __GFP_THISNODE))
+ if (page || node != -1)
return page;
return get_any_partial(s, flags);
@@ -1415,8 +1416,7 @@ static void unfreeze_slab(struct kmem_cache *s, struct page *page, int tail)
stat(s, tail ? DEACTIVATE_TO_TAIL : DEACTIVATE_TO_HEAD);
} else {
stat(s, DEACTIVATE_FULL);
- if (SLABDEBUG && PageSlubDebug(page) &&
- (s->flags & SLAB_STORE_USER))
+ if (kmem_cache_debug(s) && (s->flags & SLAB_STORE_USER))
add_full(n, page);
}
slab_unlock(page);
@@ -1515,7 +1515,7 @@ static void flush_all(struct kmem_cache *s)
static inline int node_match(struct kmem_cache_cpu *c, int node)
{
#ifdef CONFIG_NUMA
- if (node != -1 && c->node != node)
+ if (node != NUMA_NO_NODE && c->node != node)
return 0;
#endif
return 1;
@@ -1624,7 +1624,7 @@ load_freelist:
object = c->page->freelist;
if (unlikely(!object))
goto another_slab;
- if (unlikely(SLABDEBUG && PageSlubDebug(c->page)))
+ if (kmem_cache_debug(s))
goto debug;
c->freelist = get_freepointer(s, object);
@@ -1727,7 +1727,7 @@ static __always_inline void *slab_alloc(struct kmem_cache *s,
void *kmem_cache_alloc(struct kmem_cache *s, gfp_t gfpflags)
{
- void *ret = slab_alloc(s, gfpflags, -1, _RET_IP_);
+ void *ret = slab_alloc(s, gfpflags, NUMA_NO_NODE, _RET_IP_);
trace_kmem_cache_alloc(_RET_IP_, ret, s->objsize, s->size, gfpflags);
@@ -1738,7 +1738,7 @@ EXPORT_SYMBOL(kmem_cache_alloc);
#ifdef CONFIG_TRACING
void *kmem_cache_alloc_notrace(struct kmem_cache *s, gfp_t gfpflags)
{
- return slab_alloc(s, gfpflags, -1, _RET_IP_);
+ return slab_alloc(s, gfpflags, NUMA_NO_NODE, _RET_IP_);
}
EXPORT_SYMBOL(kmem_cache_alloc_notrace);
#endif
@@ -1783,7 +1783,7 @@ static void __slab_free(struct kmem_cache *s, struct page *page,
stat(s, FREE_SLOWPATH);
slab_lock(page);
- if (unlikely(SLABDEBUG && PageSlubDebug(page)))
+ if (kmem_cache_debug(s))
goto debug;
checks_ok:
@@ -2490,7 +2490,6 @@ void kmem_cache_destroy(struct kmem_cache *s)
s->refcount--;
if (!s->refcount) {
list_del(&s->list);
- up_write(&slub_lock);
if (kmem_cache_close(s)) {
printk(KERN_ERR "SLUB %s: %s called for cache that "
"still has objects.\n", s->name, __func__);
@@ -2499,8 +2498,8 @@ void kmem_cache_destroy(struct kmem_cache *s)
if (s->flags & SLAB_DESTROY_BY_RCU)
rcu_barrier();
sysfs_slab_remove(s);
- } else
- up_write(&slub_lock);
+ }
+ up_write(&slub_lock);
}
EXPORT_SYMBOL(kmem_cache_destroy);
@@ -2728,7 +2727,7 @@ void *__kmalloc(size_t size, gfp_t flags)
if (unlikely(ZERO_OR_NULL_PTR(s)))
return s;
- ret = slab_alloc(s, flags, -1, _RET_IP_);
+ ret = slab_alloc(s, flags, NUMA_NO_NODE, _RET_IP_);
trace_kmalloc(_RET_IP_, ret, size, s->size, flags);
@@ -3118,9 +3117,12 @@ void __init kmem_cache_init(void)
slab_state = UP;
/* Provide the correct kmalloc names now that the caches are up */
- for (i = KMALLOC_SHIFT_LOW; i < SLUB_PAGE_SHIFT; i++)
- kmalloc_caches[i]. name =
- kasprintf(GFP_NOWAIT, "kmalloc-%d", 1 << i);
+ for (i = KMALLOC_SHIFT_LOW; i < SLUB_PAGE_SHIFT; i++) {
+ char *s = kasprintf(GFP_NOWAIT, "kmalloc-%d", 1 << i);
+
+ BUG_ON(!s);
+ kmalloc_caches[i].name = s;
+ }
#ifdef CONFIG_SMP
register_cpu_notifier(&slab_notifier);
@@ -3223,14 +3225,12 @@ struct kmem_cache *kmem_cache_create(const char *name, size_t size,
*/
s->objsize = max(s->objsize, (int)size);
s->inuse = max_t(int, s->inuse, ALIGN(size, sizeof(void *)));
- up_write(&slub_lock);
if (sysfs_slab_alias(s, name)) {
- down_write(&slub_lock);
s->refcount--;
- up_write(&slub_lock);
goto err;
}
+ up_write(&slub_lock);
return s;
}
@@ -3239,14 +3239,12 @@ struct kmem_cache *kmem_cache_create(const char *name, size_t size,
if (kmem_cache_open(s, GFP_KERNEL, name,
size, align, flags, ctor)) {
list_add(&s->list, &slab_caches);
- up_write(&slub_lock);
if (sysfs_slab_add(s)) {
- down_write(&slub_lock);
list_del(&s->list);
- up_write(&slub_lock);
kfree(s);
goto err;
}
+ up_write(&slub_lock);
return s;
}
kfree(s);
@@ -3312,7 +3310,7 @@ void *__kmalloc_track_caller(size_t size, gfp_t gfpflags, unsigned long caller)
if (unlikely(ZERO_OR_NULL_PTR(s)))
return s;
- ret = slab_alloc(s, gfpflags, -1, caller);
+ ret = slab_alloc(s, gfpflags, NUMA_NO_NODE, caller);
/* Honor the call site pointer we recieved. */
trace_kmalloc(caller, ret, size, s->size, gfpflags);
@@ -3395,16 +3393,6 @@ static void validate_slab_slab(struct kmem_cache *s, struct page *page,
} else
printk(KERN_INFO "SLUB %s: Skipped busy slab 0x%p\n",
s->name, page);
-
- if (s->flags & DEBUG_DEFAULT_FLAGS) {
- if (!PageSlubDebug(page))
- printk(KERN_ERR "SLUB %s: SlubDebug not set "
- "on slab 0x%p\n", s->name, page);
- } else {
- if (PageSlubDebug(page))
- printk(KERN_ERR "SLUB %s: SlubDebug set on "
- "slab 0x%p\n", s->name, page);
- }
}
static int validate_slab_node(struct kmem_cache *s,
@@ -4504,6 +4492,13 @@ static int sysfs_slab_add(struct kmem_cache *s)
static void sysfs_slab_remove(struct kmem_cache *s)
{
+ if (slab_state < SYSFS)
+ /*
+ * Sysfs has not been setup yet so no need to remove the
+ * cache from sysfs.
+ */
+ return;
+
kobject_uevent(&s->kobj, KOBJ_REMOVE);
kobject_del(&s->kobj);
kobject_put(&s->kobj);
@@ -4549,8 +4544,11 @@ static int __init slab_sysfs_init(void)
struct kmem_cache *s;
int err;
+ down_write(&slub_lock);
+
slab_kset = kset_create_and_add("slab", &slab_uevent_ops, kernel_kobj);
if (!slab_kset) {
+ up_write(&slub_lock);
printk(KERN_ERR "Cannot register slab subsystem.\n");
return -ENOSYS;
}
@@ -4575,6 +4573,7 @@ static int __init slab_sysfs_init(void)
kfree(al);
}
+ up_write(&slub_lock);
resiliency_test();
return 0;
}
diff --git a/mm/vmalloc.c b/mm/vmalloc.c
index ae007462b7f..b7e314b1009 100644
--- a/mm/vmalloc.c
+++ b/mm/vmalloc.c
@@ -2403,7 +2403,7 @@ static int s_show(struct seq_file *m, void *p)
seq_printf(m, " pages=%d", v->nr_pages);
if (v->phys_addr)
- seq_printf(m, " phys=%lx", v->phys_addr);
+ seq_printf(m, " phys=%llx", (unsigned long long)v->phys_addr);
if (v->flags & VM_IOREMAP)
seq_printf(m, " ioremap");
diff --git a/mm/vmscan.c b/mm/vmscan.c
index 9c7e57cc63a..b94fe1b3da4 100644
--- a/mm/vmscan.c
+++ b/mm/vmscan.c
@@ -213,8 +213,9 @@ unsigned long shrink_slab(unsigned long scanned, gfp_t gfp_mask,
list_for_each_entry(shrinker, &shrinker_list, list) {
unsigned long long delta;
unsigned long total_scan;
- unsigned long max_pass = (*shrinker->shrink)(0, gfp_mask);
+ unsigned long max_pass;
+ max_pass = (*shrinker->shrink)(shrinker, 0, gfp_mask);
delta = (4 * scanned) / shrinker->seeks;
delta *= max_pass;
do_div(delta, lru_pages + 1);
@@ -242,8 +243,9 @@ unsigned long shrink_slab(unsigned long scanned, gfp_t gfp_mask,
int shrink_ret;
int nr_before;
- nr_before = (*shrinker->shrink)(0, gfp_mask);
- shrink_ret = (*shrinker->shrink)(this_scan, gfp_mask);
+ nr_before = (*shrinker->shrink)(shrinker, 0, gfp_mask);
+ shrink_ret = (*shrinker->shrink)(shrinker, this_scan,
+ gfp_mask);
if (shrink_ret == -1)
break;
if (shrink_ret < nr_before)
@@ -296,7 +298,7 @@ static int may_write_to_queue(struct backing_dev_info *bdi)
static void handle_write_error(struct address_space *mapping,
struct page *page, int error)
{
- lock_page(page);
+ lock_page_nosync(page);
if (page_mapping(page) == mapping)
mapping_set_error(mapping, error);
unlock_page(page);
generated by cgit v1.2.3-70-g09d2 (git 2.46.0) at 2025-03-08 01:41:47 +0000