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Subject[PATCH 2.6.19 05/10] Add kmemleak support for i386
Date
This patch modifies the vmlinux.lds.S script and adds the backtrace support
for i386 to be used with kmemleak.

Signed-off-by: Catalin Marinas <catalin.marinas@gmail.com>
---
arch/i386/kernel/vmlinux.lds.S | 4 ++++
include/asm-i386/thread_info.h | 10 +++++++++-
2 files changed, 13 insertions(+), 1 deletions(-)
diff --git a/arch/i386/kernel/vmlinux.lds.S b/arch/i386/kernel/vmlinux.lds.S
index c6f84a0..499c32b 100644
--- a/arch/i386/kernel/vmlinux.lds.S
+++ b/arch/i386/kernel/vmlinux.lds.S
@@ -52,6 +52,7 @@ SECTIONS

/* writeable */
. = ALIGN(4096);
+ _sdata = .; /* Start of data section */
.data : AT(ADDR(.data) - LOAD_OFFSET) { /* Data */
*(.data)
CONSTRUCTORS
@@ -157,6 +158,9 @@ SECTIONS
__per_cpu_start = .;
.data.percpu : AT(ADDR(.data.percpu) - LOAD_OFFSET) { *(.data.percpu) }
__per_cpu_end = .;
+ __memleak_offsets_start = .;
+ .init.memleak_offsets : AT(ADDR(.init.memleak_offsets) - LOAD_OFFSET) { *(.init.memleak_offsets) }
+ __memleak_offsets_end = .;
. = ALIGN(4096);
__init_end = .;
/* freed after init ends here */
diff --git a/include/asm-i386/thread_info.h b/include/asm-i386/thread_info.h
index 54d6d7a..054553f 100644
--- a/include/asm-i386/thread_info.h
+++ b/include/asm-i386/thread_info.h
@@ -100,12 +100,20 @@ static inline struct thread_info *curren
struct thread_info *ret; \
\
ret = kmalloc(THREAD_SIZE, GFP_KERNEL); \
+ memleak_ignore(ret); \
if (ret) \
memset(ret, 0, THREAD_SIZE); \
ret; \
})
#else
-#define alloc_thread_info(tsk) kmalloc(THREAD_SIZE, GFP_KERNEL)
+#define alloc_thread_info(tsk) \
+ ({ \
+ struct thread_info *ret; \
+ \
+ ret = kmalloc(THREAD_SIZE, GFP_KERNEL); \
+ memleak_ignore(ret); \
+ ret; \
+ })
#endif

#define free_thread_info(info) kfree(info)
-
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