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msm: kgsl: Make sure kmemleak tool does not report incorrect mem leak.

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Certain memory allocations are not properly tracked by kmemleak tool,
which makes it to incorrectly detect memory leak. Notify the tool by using
kmemleak_not_leak() to ignore the memory allocation so that incorrect leaks
report are avoided.
This commit is contained in:
securecrt 2012-06-21 13:01:23 +08:00
parent dcf924f072
commit 9d909cf27b
2 changed files with 9 additions and 0 deletions
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6
drivers/gpu/msm/kgsl_sharedmem.c
View File

@ -14,6 +14,8 @@
#include <linux/vmalloc.h>
#include <linux/memory_alloc.h>
#include <asm/cacheflush.h>
#include <linux/slab.h>
#include <linux/kmemleak.h>
#include "kgsl.h"
#include "kgsl_sharedmem.h"
@ -361,6 +363,8 @@ _kgsl_sharedmem_vmalloc(struct kgsl_memdesc *memdesc,
goto done;
}
kmemleak_not_leak(memdesc->sg);
memdesc->sglen = sglen;
sg_init_table(memdesc->sg, sglen);
@ -435,6 +439,8 @@ kgsl_sharedmem_vmalloc_user(struct kgsl_memdesc *memdesc,
return -ENOMEM;
}
kmemleak_not_leak(ptr);
protflags = GSL_PT_PAGE_RV;
if (!(flags & KGSL_MEMFLAGS_GPUREADONLY))
protflags |= GSL_PT_PAGE_WV;

3
drivers/gpu/msm/kgsl_sharedmem.h Normal file → Executable file
View File

@ -16,6 +16,7 @@
#include <linux/slab.h>
#include <linux/dma-mapping.h>
#include <linux/kmemleak.h>
/*
* Convert a page to a physical address
@ -90,6 +91,8 @@ memdesc_sg_phys(struct kgsl_memdesc *memdesc,
if (memdesc->sg == NULL)
return -ENOMEM;
kmemleak_not_leak(memdesc->sg);
memdesc->sglen = 1;
sg_init_table(memdesc->sg, 1);
sg_set_page(&memdesc->sg[0], page, size, 0);