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kmemleak: Mark the early log buffer as __initdata

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This buffer isn't needed after kmemleak was initialised so it can be
freed together with the .init.data section. This patch also marks
functions conditionally accessing the early log variables with __ref.

Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>
This commit is contained in:
Catalin Marinas 2009-08-27 14:29:16 +01:00
parent 189d84ed54
commit a6186d89c9
2 changed files with 23 additions and 21 deletions
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18
include/linux/kmemleak.h
View File

@ -23,18 +23,18 @@
#ifdef CONFIG_DEBUG_KMEMLEAK
extern void kmemleak_init(void);
extern void kmemleak_init(void) __ref;
extern void kmemleak_alloc(const void *ptr, size_t size, int min_count,
gfp_t gfp);
extern void kmemleak_free(const void *ptr);
extern void kmemleak_free_part(const void *ptr, size_t size);
gfp_t gfp) __ref;
extern void kmemleak_free(const void *ptr) __ref;
extern void kmemleak_free_part(const void *ptr, size_t size) __ref;
extern void kmemleak_padding(const void *ptr, unsigned long offset,
size_t size);
extern void kmemleak_not_leak(const void *ptr);
extern void kmemleak_ignore(const void *ptr);
size_t size) __ref;
extern void kmemleak_not_leak(const void *ptr) __ref;
extern void kmemleak_ignore(const void *ptr) __ref;
extern void kmemleak_scan_area(const void *ptr, unsigned long offset,
size_t length, gfp_t gfp);
extern void kmemleak_no_scan(const void *ptr);
size_t length, gfp_t gfp) __ref;
extern void kmemleak_no_scan(const void *ptr) __ref;
static inline void kmemleak_alloc_recursive(const void *ptr, size_t size,
int min_count, unsigned long flags,

26
mm/kmemleak.c
View File

@ -232,8 +232,9 @@ struct early_log {
};
/* early logging buffer and current position */
static struct early_log early_log[CONFIG_DEBUG_KMEMLEAK_EARLY_LOG_SIZE];
static int crt_early_log;
static struct early_log
early_log[CONFIG_DEBUG_KMEMLEAK_EARLY_LOG_SIZE] __initdata;
static int crt_early_log __initdata;
static void kmemleak_disable(void);
@ -718,8 +719,8 @@ static void object_no_scan(unsigned long ptr)
* Log an early kmemleak_* call to the early_log buffer. These calls will be
* processed later once kmemleak is fully initialized.
*/
static void log_early(int op_type, const void *ptr, size_t size,
int min_count, unsigned long offset, size_t length)
static void __init log_early(int op_type, const void *ptr, size_t size,
int min_count, unsigned long offset, size_t length)
{
unsigned long flags;
struct early_log *log;
@ -751,7 +752,8 @@ static void log_early(int op_type, const void *ptr, size_t size,
* kernel allocators when a new block is allocated (kmem_cache_alloc, kmalloc,
* vmalloc etc.).
*/
void kmemleak_alloc(const void *ptr, size_t size, int min_count, gfp_t gfp)
void __ref kmemleak_alloc(const void *ptr, size_t size, int min_count,
gfp_t gfp)
{
pr_debug("%s(0x%p, %zu, %d)\n", __func__, ptr, size, min_count);
@ -766,7 +768,7 @@ EXPORT_SYMBOL_GPL(kmemleak_alloc);
* Memory freeing function callback. This function is called from the kernel
* allocators when a block is freed (kmem_cache_free, kfree, vfree etc.).
*/
void kmemleak_free(const void *ptr)
void __ref kmemleak_free(const void *ptr)
{
pr_debug("%s(0x%p)\n", __func__, ptr);
@ -781,7 +783,7 @@ EXPORT_SYMBOL_GPL(kmemleak_free);
* Partial memory freeing function callback. This function is usually called
* from bootmem allocator when (part of) a memory block is freed.
*/
void kmemleak_free_part(const void *ptr, size_t size)
void __ref kmemleak_free_part(const void *ptr, size_t size)
{
pr_debug("%s(0x%p)\n", __func__, ptr);
@ -796,7 +798,7 @@ EXPORT_SYMBOL_GPL(kmemleak_free_part);
* Mark an already allocated memory block as a false positive. This will cause
* the block to no longer be reported as leak and always be scanned.
*/
void kmemleak_not_leak(const void *ptr)
void __ref kmemleak_not_leak(const void *ptr)
{
pr_debug("%s(0x%p)\n", __func__, ptr);
@ -812,7 +814,7 @@ EXPORT_SYMBOL(kmemleak_not_leak);
* corresponding block is not a leak and does not contain any references to
* other allocated memory blocks.
*/
void kmemleak_ignore(const void *ptr)
void __ref kmemleak_ignore(const void *ptr)
{
pr_debug("%s(0x%p)\n", __func__, ptr);
@ -826,8 +828,8 @@ EXPORT_SYMBOL(kmemleak_ignore);
/*
* Limit the range to be scanned in an allocated memory block.
*/
void kmemleak_scan_area(const void *ptr, unsigned long offset, size_t length,
gfp_t gfp)
void __ref kmemleak_scan_area(const void *ptr, unsigned long offset,
size_t length, gfp_t gfp)
{
pr_debug("%s(0x%p)\n", __func__, ptr);
@ -841,7 +843,7 @@ EXPORT_SYMBOL(kmemleak_scan_area);
/*
* Inform kmemleak not to scan the given memory block.
*/
void kmemleak_no_scan(const void *ptr)
void __ref kmemleak_no_scan(const void *ptr)
{
pr_debug("%s(0x%p)\n", __func__, ptr);