[PATCH v2 6/7] arm: LLVMLinux: Use current_stack_pointer in unwind_backtrace
STALE4412d
REVIEWED: 1 (0M)
From: behanw at converseincode.com <hidden>
Date: 2014-09-06 00:08:06
Also in:
lkml
Subsystem:
arm port, the rest · Maintainers:
Russell King, Linus Torvalds
Revision v2 of 6 in this series; 1 review trailer.
Revisions (6)
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/unwind.c | 3 +-- 1 file changed, 1 insertion(+), 2 deletions(-)
diff --git a/arch/arm/kernel/unwind.c b/arch/arm/kernel/unwind.c
index a61a1df..caea23b 100644
--- a/arch/arm/kernel/unwind.c
+++ b/arch/arm/kernel/unwind.c@@ -471,7 +471,6 @@ int unwind_frame(struct stackframe *frame) void unwind_backtrace(struct pt_regs *regs, struct task_struct *tsk) { struct stackframe frame; - register unsigned long current_sp asm ("sp"); pr_debug("%s(regs = %p tsk = %p)\n", __func__, regs, tsk);
@@ -485,7 +484,7 @@ void unwind_backtrace(struct pt_regs *regs, struct task_struct *tsk) frame.pc = regs->ARM_lr; } else if (tsk == current) { 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)unwind_backtrace; } else {
--
1.9.1