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Commit 2128df14 authored by Behan Webster's avatar Behan Webster Committed by Will Deacon
Browse files

arm64: LLVMLinux: Use current_stack_pointer in kernel/traps.c 



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: default avatarBehan Webster <behanw@converseincode.com>
Signed-off-by: default avatarMark Charlebois <charlebm@gmail.com>
Reviewed-by: default avatarOlof Johansson <olof@lixom.net>
Acked-by: default avatarWill Deacon <will.deacon@arm.com>
Signed-off-by: default avatarWill Deacon <will.deacon@arm.com>
parent 78624870

arch/arm64/kernel/traps.c

+1 −2
Original line number Diff line number Diff line
@@ -132,7 +132,6 @@ static void dump_instr(const char *lvl, struct pt_regs *regs) 
static void dump_backtrace(struct pt_regs *regs, struct task_struct *tsk)

{

	struct stackframe frame;

	const register unsigned long current_sp asm ("sp");



	pr_debug("%s(regs = %p tsk = %p)\n", __func__, regs, tsk);
@@ -145,7 +144,7 @@ static void dump_backtrace(struct pt_regs *regs, struct task_struct *tsk) 
		frame.pc = regs->pc;

	} else if (tsk == current) {

		frame.fp = (unsigned long)__builtin_frame_address(0);

		frame.sp = current_sp;

		frame.sp = current_stack_pointer;

		frame.pc = (unsigned long)dump_backtrace;

	} else {

		/*