[PATCH v2 4/7] arm: LLVMLinux: Use current_stack_pointer in save_stack_trace_tsk
STALE4411d
REVIEWED: 1 (0M)
From: behanw at converseincode.com <hidden>
Date: 2014-09-06 00:10:36
Also in:
lkml
Subsystem:
arm port, the rest · Maintainers:
Russell King, Linus Torvalds
Revision v2 of 7 in this series; 1 review trailer.
Revisions (7)
From: Behan Webster <redacted> 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 <redacted> Signed-off-by: Mark Charlebois <redacted> Reviewed-by: Jan-Simon M?ller <redacted> --- 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