From: Behan Webster <beh...@converseincode.com>
The existing code uses named registers to get the value of the stack pointer.
The new current_stack_pointer macro is more readable and allows for a central
portable implementation of how to get the stack pointer with ASM. This change
supports being able to compile the kernel with both gcc and Clang.
Signed-off-by: Mark Charlebois <charl...@gmail.com>
Signed-off-by: Behan Webster <beh...@converseincode.com>
Reviewed-by: Jan-Simon Möller <dl...@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 00f79e5..8c23310 100644
--- a/arch/arm/kernel/stacktrace.c
+++ b/arch/arm/kernel/stacktrace.c
@@ -109,11 +109,9 @@ void save_stack_trace_tsk(struct task_struct *tsk, struct
stack_trace *trace)
frame.pc = thread_saved_pc(tsk);
#endif
} else {
- register unsigned long current_sp asm ("sp");
-
data.no_sched_functions = 0;
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_tsk;
}
--
1.8.1.2
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