Messages in this thread Patch in this message | | | From | behanw@converse ... | Subject | [PATCH v2 4/7] arm: LLVMLinux: Use current_stack_pointer in save_stack_trace_tsk | Date | Fri, 5 Sep 2014 17:06:14 -0700 |
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From: Behan Webster <behanw@converseincode.com>
Use the global current_stack_pointer to get the value of the stack pointer. This change supports being able to compile the kernel with both gcc and clang.
Signed-off-by: Behan Webster <behanw@converseincode.com> Signed-off-by: Mark Charlebois <charlebm@gmail.com> Reviewed-by: Jan-Simon Möller <dl9pf@gmx.de> --- arch/arm/kernel/stacktrace.c | 4 +--- 1 file changed, 1 insertion(+), 3 deletions(-)
diff --git a/arch/arm/kernel/stacktrace.c b/arch/arm/kernel/stacktrace.c index f065eb0..92b7237 100644 --- a/arch/arm/kernel/stacktrace.c +++ b/arch/arm/kernel/stacktrace.c @@ -134,12 +134,10 @@ static noinline void __save_stack_trace(struct task_struct *tsk, frame.pc = thread_saved_pc(tsk); #endif } else { - register unsigned long current_sp asm ("sp"); - /* We don't want this function nor the caller */ data.skip += 2; frame.fp = (unsigned long)__builtin_frame_address(0); - frame.sp = current_sp; + frame.sp = current_stack_pointer; frame.lr = (unsigned long)__builtin_return_address(0); frame.pc = (unsigned long)__save_stack_trace; } -- 1.9.1 -- 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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