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-rw-r--r--mm/slab.c89
1 files changed, 40 insertions, 49 deletions
diff --git a/mm/slab.c b/mm/slab.c
index 852fc5c79829..e719a5cb3396 100644
--- a/mm/slab.c
+++ b/mm/slab.c
@@ -474,7 +474,7 @@ static unsigned int cache_estimate(unsigned long gfporder, size_t buffer_size,
static void __slab_error(const char *function, struct kmem_cache *cachep,
char *msg)
{
- printk(KERN_ERR "slab error in %s(): cache `%s': %s\n",
+ pr_err("slab error in %s(): cache `%s': %s\n",
function, cachep->name, msg);
dump_stack();
add_taint(TAINT_BAD_PAGE, LOCKDEP_NOW_UNRELIABLE);
@@ -670,7 +670,7 @@ static inline void *____cache_alloc_node(struct kmem_cache *cachep,
static inline gfp_t gfp_exact_node(gfp_t flags)
{
- return flags;
+ return flags & ~__GFP_NOFAIL;
}
#else /* CONFIG_NUMA */
@@ -841,12 +841,12 @@ static inline int cache_free_alien(struct kmem_cache *cachep, void *objp)
}
/*
- * Construct gfp mask to allocate from a specific node but do not direct reclaim
- * or warn about failures. kswapd may still wake to reclaim in the background.
+ * Construct gfp mask to allocate from a specific node but do not reclaim or
+ * warn about failures.
*/
static inline gfp_t gfp_exact_node(gfp_t flags)
{
- return (flags | __GFP_THISNODE | __GFP_NOWARN) & ~__GFP_DIRECT_RECLAIM;
+ return (flags | __GFP_THISNODE | __GFP_NOWARN) & ~(__GFP_RECLAIM|__GFP_NOFAIL);
}
#endif
@@ -1442,9 +1442,10 @@ static struct page *kmem_getpages(struct kmem_cache *cachep, gfp_t flags,
*/
static void kmem_freepages(struct kmem_cache *cachep, struct page *page)
{
- const unsigned long nr_freed = (1 << cachep->gfporder);
+ int order = cachep->gfporder;
+ unsigned long nr_freed = (1 << order);
- kmemcheck_free_shadow(page, cachep->gfporder);
+ kmemcheck_free_shadow(page, order);
if (cachep->flags & SLAB_RECLAIM_ACCOUNT)
sub_zone_page_state(page_zone(page),
@@ -1461,7 +1462,8 @@ static void kmem_freepages(struct kmem_cache *cachep, struct page *page)
if (current->reclaim_state)
current->reclaim_state->reclaimed_slab += nr_freed;
- __free_kmem_pages(page, cachep->gfporder);
+ memcg_uncharge_slab(page, order, cachep);
+ __free_pages(page, order);
}
static void kmem_rcu_free(struct rcu_head *head)
@@ -1551,7 +1553,7 @@ static void dump_line(char *data, int offset, int limit)
unsigned char error = 0;
int bad_count = 0;
- printk(KERN_ERR "%03x: ", offset);
+ pr_err("%03x: ", offset);
for (i = 0; i < limit; i++) {
if (data[offset + i] != POISON_FREE) {
error = data[offset + i];
@@ -1564,13 +1566,11 @@ static void dump_line(char *data, int offset, int limit)
if (bad_count == 1) {
error ^= POISON_FREE;
if (!(error & (error - 1))) {
- printk(KERN_ERR "Single bit error detected. Probably "
- "bad RAM.\n");
+ pr_err("Single bit error detected. Probably bad RAM.\n");
#ifdef CONFIG_X86
- printk(KERN_ERR "Run memtest86+ or a similar memory "
- "test tool.\n");
+ pr_err("Run memtest86+ or a similar memory test tool.\n");
#else
- printk(KERN_ERR "Run a memory test tool.\n");
+ pr_err("Run a memory test tool.\n");
#endif
}
}
@@ -1585,13 +1585,13 @@ static void print_objinfo(struct kmem_cache *cachep, void *objp, int lines)
char *realobj;
if (cachep->flags & SLAB_RED_ZONE) {
- printk(KERN_ERR "Redzone: 0x%llx/0x%llx.\n",
- *dbg_redzone1(cachep, objp),
- *dbg_redzone2(cachep, objp));
+ pr_err("Redzone: 0x%llx/0x%llx\n",
+ *dbg_redzone1(cachep, objp),
+ *dbg_redzone2(cachep, objp));
}
if (cachep->flags & SLAB_STORE_USER) {
- printk(KERN_ERR "Last user: [<%p>](%pSR)\n",
+ pr_err("Last user: [<%p>](%pSR)\n",
*dbg_userword(cachep, objp),
*dbg_userword(cachep, objp));
}
@@ -1627,9 +1627,9 @@ static void check_poison_obj(struct kmem_cache *cachep, void *objp)
/* Mismatch ! */
/* Print header */
if (lines == 0) {
- printk(KERN_ERR
- "Slab corruption (%s): %s start=%p, len=%d\n",
- print_tainted(), cachep->name, realobj, size);
+ pr_err("Slab corruption (%s): %s start=%p, len=%d\n",
+ print_tainted(), cachep->name,
+ realobj, size);
print_objinfo(cachep, objp, 0);
}
/* Hexdump the affected line */
@@ -1656,15 +1656,13 @@ static void check_poison_obj(struct kmem_cache *cachep, void *objp)
if (objnr) {
objp = index_to_obj(cachep, page, objnr - 1);
realobj = (char *)objp + obj_offset(cachep);
- printk(KERN_ERR "Prev obj: start=%p, len=%d\n",
- realobj, size);
+ pr_err("Prev obj: start=%p, len=%d\n", realobj, size);
print_objinfo(cachep, objp, 2);
}
if (objnr + 1 < cachep->num) {
objp = index_to_obj(cachep, page, objnr + 1);
realobj = (char *)objp + obj_offset(cachep);
- printk(KERN_ERR "Next obj: start=%p, len=%d\n",
- realobj, size);
+ pr_err("Next obj: start=%p, len=%d\n", realobj, size);
print_objinfo(cachep, objp, 2);
}
}
@@ -1691,11 +1689,9 @@ static void slab_destroy_debugcheck(struct kmem_cache *cachep,
}
if (cachep->flags & SLAB_RED_ZONE) {
if (*dbg_redzone1(cachep, objp) != RED_INACTIVE)
- slab_error(cachep, "start of a freed object "
- "was overwritten");
+ slab_error(cachep, "start of a freed object was overwritten");
if (*dbg_redzone2(cachep, objp) != RED_INACTIVE)
- slab_error(cachep, "end of a freed object "
- "was overwritten");
+ slab_error(cachep, "end of a freed object was overwritten");
}
}
}
@@ -2396,11 +2392,9 @@ static void cache_init_objs_debug(struct kmem_cache *cachep, struct page *page)
if (cachep->flags & SLAB_RED_ZONE) {
if (*dbg_redzone2(cachep, objp) != RED_INACTIVE)
- slab_error(cachep, "constructor overwrote the"
- " end of an object");
+ slab_error(cachep, "constructor overwrote the end of an object");
if (*dbg_redzone1(cachep, objp) != RED_INACTIVE)
- slab_error(cachep, "constructor overwrote the"
- " start of an object");
+ slab_error(cachep, "constructor overwrote the start of an object");
}
/* need to poison the objs? */
if (cachep->flags & SLAB_POISON) {
@@ -2467,8 +2461,8 @@ static void slab_put_obj(struct kmem_cache *cachep,
/* Verify double free bug */
for (i = page->active; i < cachep->num; i++) {
if (get_free_obj(page, i) == objnr) {
- printk(KERN_ERR "slab: double free detected in cache "
- "'%s', objp %p\n", cachep->name, objp);
+ pr_err("slab: double free detected in cache '%s', objp %p\n",
+ cachep->name, objp);
BUG();
}
}
@@ -2587,7 +2581,7 @@ failed:
static void kfree_debugcheck(const void *objp)
{
if (!virt_addr_valid(objp)) {
- printk(KERN_ERR "kfree_debugcheck: out of range ptr %lxh.\n",
+ pr_err("kfree_debugcheck: out of range ptr %lxh\n",
(unsigned long)objp);
BUG();
}
@@ -2611,8 +2605,8 @@ static inline void verify_redzone_free(struct kmem_cache *cache, void *obj)
else
slab_error(cache, "memory outside object was overwritten");
- printk(KERN_ERR "%p: redzone 1:0x%llx, redzone 2:0x%llx.\n",
- obj, redzone1, redzone2);
+ pr_err("%p: redzone 1:0x%llx, redzone 2:0x%llx\n",
+ obj, redzone1, redzone2);
}
static void *cache_free_debugcheck(struct kmem_cache *cachep, void *objp,
@@ -2899,12 +2893,10 @@ static void *cache_alloc_debugcheck_after(struct kmem_cache *cachep,
if (cachep->flags & SLAB_RED_ZONE) {
if (*dbg_redzone1(cachep, objp) != RED_INACTIVE ||
*dbg_redzone2(cachep, objp) != RED_INACTIVE) {
- slab_error(cachep, "double free, or memory outside"
- " object was overwritten");
- printk(KERN_ERR
- "%p: redzone 1:0x%llx, redzone 2:0x%llx\n",
- objp, *dbg_redzone1(cachep, objp),
- *dbg_redzone2(cachep, objp));
+ slab_error(cachep, "double free, or memory outside object was overwritten");
+ pr_err("%p: redzone 1:0x%llx, redzone 2:0x%llx\n",
+ objp, *dbg_redzone1(cachep, objp),
+ *dbg_redzone2(cachep, objp));
}
*dbg_redzone1(cachep, objp) = RED_ACTIVE;
*dbg_redzone2(cachep, objp) = RED_ACTIVE;
@@ -2915,7 +2907,7 @@ static void *cache_alloc_debugcheck_after(struct kmem_cache *cachep,
cachep->ctor(objp);
if (ARCH_SLAB_MINALIGN &&
((unsigned long)objp & (ARCH_SLAB_MINALIGN-1))) {
- printk(KERN_ERR "0x%p: not aligned to ARCH_SLAB_MINALIGN=%d\n",
+ pr_err("0x%p: not aligned to ARCH_SLAB_MINALIGN=%d\n",
objp, (int)ARCH_SLAB_MINALIGN);
}
return objp;
@@ -3842,7 +3834,7 @@ static int enable_cpucache(struct kmem_cache *cachep, gfp_t gfp)
skip_setup:
err = do_tune_cpucache(cachep, limit, batchcount, shared, gfp);
if (err)
- printk(KERN_ERR "enable_cpucache failed for %s, error %d.\n",
+ pr_err("enable_cpucache failed for %s, error %d\n",
cachep->name, -err);
return err;
}
@@ -3998,7 +3990,7 @@ void get_slabinfo(struct kmem_cache *cachep, struct slabinfo *sinfo)
name = cachep->name;
if (error)
- printk(KERN_ERR "slab: cache %s error: %s\n", name, error);
+ pr_err("slab: cache %s error: %s\n", name, error);
sinfo->active_objs = active_objs;
sinfo->num_objs = num_objs;
@@ -4026,8 +4018,7 @@ void slabinfo_show_stats(struct seq_file *m, struct kmem_cache *cachep)
unsigned long node_frees = cachep->node_frees;
unsigned long overflows = cachep->node_overflow;
- seq_printf(m, " : globalstat %7lu %6lu %5lu %4lu "
- "%4lu %4lu %4lu %4lu %4lu",
+ seq_printf(m, " : globalstat %7lu %6lu %5lu %4lu %4lu %4lu %4lu %4lu %4lu",
allocs, high, grown,
reaped, errors, max_freeable, node_allocs,
node_frees, overflows);
generated by cgit v1.2.3 (git 2.39.1) at 2024-12-16 20:18:55 +0100