c/mirror_zfs
1
0
Fork 0
mirror of https://git.proxmox.com/git/mirror_zfs.git synced 2026-06-01 03:34:10 +03:00
Code Issues Packages Projects Releases Wiki Activity

Fix KMEM_DEBUG support (enable by default)

Browse Source 
Add vmem_alloc/vmem_free support (and test case)
Add missing time functions



git-svn-id: https://outreach.scidac.gov/svn/spl/trunk@46 7e1ea52c-4ff2-0310-8f11-9dd32ca42a1c
This commit is contained in:
behlendo
2008-03-14 19:04:41 +00:00
parent af828292e5
commit 79b31f3601
7 changed files with 146 additions and 28 deletions
Download Patch File Download Diff File Expand all files Collapse all files
include/sys/kmem.h
+41 -7
View File
@@ -5,11 +5,12 @@
extern "C" {
#endif
#undef DEBUG_KMEM
#define DEBUG_KMEM
#undef DEBUG_KMEM_UNIMPLEMENTED
#include <linux/module.h>
#include <linux/slab.h>
#include <linux/vmalloc.h>
#include <linux/mm.h>
#include <linux/spinlock.h>
/*
@@ -23,12 +24,11 @@ extern "C" {
#define KM_FLAGS __GFP_BITS_MASK
#ifdef DEBUG_KMEM
/* Shim layer memory accounting */
extern atomic_t kmem_alloc_used;
extern unsigned int kmem_alloc_max;
#endif
extern atomic_t vmem_alloc_used;
extern unsigned int vmem_alloc_max;
#ifdef DEBUG_KMEM
#define __kmem_alloc(size, flags, allocator) \
({ void *_ptr_; \
\
@@ -58,13 +58,40 @@ extern unsigned int kmem_alloc_max;
#define kmem_free(ptr, size) \
({ \
BUG_ON(!ptr || size < 0); \
BUG_ON(!(ptr) || (size) < 0); \
atomic_sub((size), &kmem_alloc_used); \
memset(ptr, 0x5a, (size)); /* Poison */ \
kfree(ptr); \
(ptr) = (void *)0xdeadbeef; \
})
#define __vmem_alloc(size, flags) \
({ void *_ptr_; \
\
BUG_ON(flags != KM_SLEEP); \
\
_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), \
__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); \
} \
\
_ptr_; \
})
#define vmem_alloc(size, flags) __vmem_alloc(size, flags)
#define vmem_free(ptr, size) \
({ \
BUG_ON(!(ptr) || (size) < 0); \
atomic_sub((size), &vmem_alloc_used); \
memset(ptr, 0x5a, (size)); /* Poison */ \
vfree(ptr); \
})
#else
@@ -72,10 +99,17 @@ extern unsigned int kmem_alloc_max;
#define kmem_zalloc(size, flags) kzalloc(size, flags)
#define kmem_free(ptr, size) \
({ \
BUG_ON(!ptr || size < 0); \
BUG_ON(!(ptr) || (size) < 0); \
kfree(ptr); \
})
#define vmem_alloc(size, flags) vmalloc(size)
#define vmem_free(ptr, size) \
({ \
BUG_ON(!(ptr) || (size) < 0); \
vfree(ptr); \
})
#endif /* DEBUG_KMEM */