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Fix kmem memory accounting

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Adjust kmem slab interface to make a copy of the slab name before
passing it on to the linux slab (we free it latter too)



git-svn-id: https://outreach.scidac.gov/svn/spl/trunk@47 7e1ea52c-4ff2-0310-8f11-9dd32ca42a1c
This commit is contained in:
behlendo
2008-03-14 20:56:26 +00:00
parent 79b31f3601
commit c19c06f3b0
4 changed files with 74 additions and 24 deletions
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include/sys/kmem.h
+24 -19
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@@ -24,30 +24,32 @@ extern "C" {
#define KM_FLAGS __GFP_BITS_MASK
#ifdef DEBUG_KMEM
extern atomic_t kmem_alloc_used;
extern unsigned int kmem_alloc_max;
extern atomic_t vmem_alloc_used;
extern unsigned int vmem_alloc_max;
extern atomic64_t kmem_alloc_used;
extern unsigned long kmem_alloc_max;
extern atomic64_t vmem_alloc_used;
extern unsigned long vmem_alloc_max;
extern int kmem_warning_flag;
#define __kmem_alloc(size, flags, allocator) \
({ void *_ptr_; \
\
/* Marked unlikely because we should never be doing this */ \
if (unlikely((size) > (PAGE_SIZE * 2))) \
if (unlikely((size) > (PAGE_SIZE * 2)) && kmem_warning_flag) \
printk("Warning: kmem_alloc(%d, 0x%x) large alloc at %s:%d " \
"(%d/%d)\n", (int)(size), (int)(flags), \
"(%ld/%ld)\n", (int)(size), (int)(flags), \
__FILE__, __LINE__, \
atomic_read(&kmem_alloc_used), kmem_alloc_max); \
atomic64_read(&kmem_alloc_used), kmem_alloc_max); \
\
_ptr_ = (void *)allocator((size), (flags)); \
if (_ptr_ == NULL) { \
printk("Warning: kmem_alloc(%d, 0x%x) failed at %s:%d " \
"(%d/%d)\n", (int)(size), (int)(flags), \
"(%ld/%ld)\n", (int)(size), (int)(flags), \
__FILE__, __LINE__, \
atomic_read(&kmem_alloc_used), kmem_alloc_max); \
atomic_add((size), &kmem_alloc_used); \
if (unlikely(atomic_read(&kmem_alloc_used) > kmem_alloc_max)) \
kmem_alloc_max = atomic_read(&kmem_alloc_used); \
atomic64_read(&kmem_alloc_used), kmem_alloc_max); \
} else { \
atomic64_add((size), &kmem_alloc_used); \
if (unlikely(atomic64_read(&kmem_alloc_used)>kmem_alloc_max)) \
kmem_alloc_max = atomic64_read(&kmem_alloc_used); \
} \
\
_ptr_; \
@@ -59,7 +61,7 @@ extern unsigned int vmem_alloc_max;
#define kmem_free(ptr, size) \
({ \
BUG_ON(!(ptr) || (size) < 0); \
atomic_sub((size), &kmem_alloc_used); \
atomic64_sub((size), &kmem_alloc_used); \
memset(ptr, 0x5a, (size)); /* Poison */ \
kfree(ptr); \
})
@@ -72,12 +74,13 @@ extern unsigned int vmem_alloc_max;
_ptr_ = (void *)vmalloc((size)); \
if (_ptr_ == NULL) { \
printk("Warning: vmem_alloc(%d, 0x%x) failed at %s:%d " \
"(%d/%d)\n", (int)(size), (int)(flags), \
"(%ld/%ld)\n", (int)(size), (int)(flags), \
__FILE__, __LINE__, \
atomic_read(&vmem_alloc_used), vmem_alloc_max); \
atomic_add((size), &vmem_alloc_used); \
if (unlikely(atomic_read(&vmem_alloc_used) > vmem_alloc_max)) \
vmem_alloc_max = atomic_read(&vmem_alloc_used); \
atomic64_read(&vmem_alloc_used), vmem_alloc_max); \
} else { \
atomic64_add((size), &vmem_alloc_used); \
if (unlikely(atomic64_read(&vmem_alloc_used)>vmem_alloc_max)) \
vmem_alloc_max = atomic64_read(&vmem_alloc_used); \
} \
\
_ptr_; \
@@ -88,7 +91,7 @@ extern unsigned int vmem_alloc_max;
#define vmem_free(ptr, size) \
({ \
BUG_ON(!(ptr) || (size) < 0); \
atomic_sub((size), &vmem_alloc_used); \
atomic64_sub((size), &vmem_alloc_used); \
memset(ptr, 0x5a, (size)); /* Poison */ \
vfree(ptr); \
})
@@ -186,6 +189,8 @@ typedef int (*kmem_constructor_t)(void *, void *, int);
typedef void (*kmem_destructor_t)(void *, void *);
typedef void (*kmem_reclaim_t)(void *);
extern int kmem_set_warning(int flag);
extern kmem_cache_t *
__kmem_cache_create(char *name, size_t size, size_t align,
kmem_constructor_t constructor,