From 5a8ff54c260ecfed3de9b8d1272eb87826935df8 Mon Sep 17 00:00:00 2001 From: Josh Poimboeuf Date: Wed, 24 Aug 2016 11:50:18 -0500 Subject: x86/dumpstack: Remove unnecessary stack pointer arguments When calling show_stack_log_lvl() or dump_trace() with a regs argument, providing a stack pointer or frame pointer is redundant. Signed-off-by: Josh Poimboeuf d Reviewed-by: Andy Lutomirski Cc: Andy Lutomirski Cc: Brian Gerst Cc: Byungchul Park Cc: Frederic Weisbecker Cc: Kees Cook Cc: Linus Torvalds Cc: Nilay Vaish Cc: Peter Zijlstra Cc: Steven Rostedt Cc: Thomas Gleixner Link: http://lkml.kernel.org/r/1694e2e955e3b9a73a3c3d5ba2634344014dd550.1472057064.git.jpoimboe@redhat.com Signed-off-by: Ingo Molnar --- arch/x86/oprofile/backtrace.c | 5 +---- 1 file changed, 1 insertion(+), 4 deletions(-) (limited to 'arch/x86/oprofile') diff --git a/arch/x86/oprofile/backtrace.c b/arch/x86/oprofile/backtrace.c index 2ef6c8b56311..d950f9ea9a8c 100644 --- a/arch/x86/oprofile/backtrace.c +++ b/arch/x86/oprofile/backtrace.c @@ -113,8 +113,6 @@ x86_backtrace(struct pt_regs * const regs, unsigned int depth) struct stack_frame *head = (struct stack_frame *)frame_pointer(regs); if (!user_mode(regs)) { - unsigned long stack = kernel_stack_pointer(regs); - if (!depth) return; @@ -122,8 +120,7 @@ x86_backtrace(struct pt_regs * const regs, unsigned int depth) if (!--depth) return; - dump_trace(NULL, regs, (unsigned long *)stack, 0, - &backtrace_ops, &depth); + dump_trace(NULL, regs, NULL, 0, &backtrace_ops, &depth); return; } -- cgit v1.2.3