Messages in this thread Patch in this message | | | From | Catalin Marinas <> | Subject | [PATCH 2.6.17-rc6 5/9] Add kmemleak support for i386 | Date | Sun, 11 Jun 2006 12:21:42 +0100 |
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From: Catalin Marinas <catalin.marinas@arm.com>
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@arm.com> ---
arch/i386/kernel/vmlinux.lds.S | 4 ++++ include/asm-i386/processor.h | 12 ++++++++++++ include/asm-i386/thread_info.h | 10 +++++++++- 3 files changed, 25 insertions(+), 1 deletions(-)
diff --git a/arch/i386/kernel/vmlinux.lds.S b/arch/i386/kernel/vmlinux.lds.S index 8831303..370480e 100644 --- a/arch/i386/kernel/vmlinux.lds.S +++ b/arch/i386/kernel/vmlinux.lds.S @@ -38,6 +38,7 @@ SECTIONS RODATA /* writeable */ + _sdata = .; /* Start of data section */ .data : AT(ADDR(.data) - LOAD_OFFSET) { /* Data */ *(.data) CONSTRUCTORS @@ -140,6 +141,9 @@ 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/processor.h b/include/asm-i386/processor.h index 805f0dc..9b6568a 100644 --- a/include/asm-i386/processor.h +++ b/include/asm-i386/processor.h @@ -743,4 +743,16 @@ #else #define mcheck_init(c) do {} while(0) #endif +#ifdef CONFIG_FRAME_POINTER +static inline unsigned long arch_call_address(void *frame) +{ + return *(unsigned long *) (frame + 4); +} + +static inline void *arch_prev_frame(void *frame) +{ + return *(void **) frame; +} +#endif + #endif /* __ASM_I386_PROCESSOR_H */ diff --git a/include/asm-i386/thread_info.h b/include/asm-i386/thread_info.h index 1f7d48c..7e7c508 100644 --- a/include/asm-i386/thread_info.h +++ b/include/asm-i386/thread_info.h @@ -102,12 +102,20 @@ #define alloc_thread_info(tsk) \ 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) - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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