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authorJosh Poimboeuf <jpoimboe@redhat.com>2016-08-24 11:50:18 -0500
committerIngo Molnar <mingo@kernel.org>2016-09-08 08:58:40 +0200
commit5a8ff54c260ecfed3de9b8d1272eb87826935df8 (patch)
treeb1c2b4c3166e42e6b41ebc9d4c3b48547d96ce95 /arch/x86/kernel/dumpstack_64.c
parent4b8afafbe743be1a81c96ddcd75b19c534d5e262 (diff)
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 <jpoimboe@redhat.com>d Reviewed-by: Andy Lutomirski <luto@kernel.org> Cc: Andy Lutomirski <luto@amacapital.net> Cc: Brian Gerst <brgerst@gmail.com> Cc: Byungchul Park <byungchul.park@lge.com> Cc: Frederic Weisbecker <fweisbec@gmail.com> Cc: Kees Cook <keescook@chromium.org> Cc: Linus Torvalds <torvalds@linux-foundation.org> Cc: Nilay Vaish <nilayvaish@gmail.com> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Steven Rostedt <rostedt@goodmis.org> Cc: Thomas Gleixner <tglx@linutronix.de> Link: http://lkml.kernel.org/r/1694e2e955e3b9a73a3c3d5ba2634344014dd550.1472057064.git.jpoimboe@redhat.com Signed-off-by: Ingo Molnar <mingo@kernel.org>
Diffstat (limited to 'arch/x86/kernel/dumpstack_64.c')
-rw-r--r--arch/x86/kernel/dumpstack_64.c5
1 files changed, 1 insertions, 4 deletions
diff --git a/arch/x86/kernel/dumpstack_64.c b/arch/x86/kernel/dumpstack_64.c
index 7f3b8066f719..b243352c779e 100644
--- a/arch/x86/kernel/dumpstack_64.c
+++ b/arch/x86/kernel/dumpstack_64.c
@@ -283,9 +283,7 @@ show_stack_log_lvl(struct task_struct *task, struct pt_regs *regs,
void show_regs(struct pt_regs *regs)
{
int i;
- unsigned long sp;
- sp = regs->sp;
show_regs_print_info(KERN_DEFAULT);
__show_regs(regs, 1);
@@ -300,8 +298,7 @@ void show_regs(struct pt_regs *regs)
u8 *ip;
printk(KERN_DEFAULT "Stack:\n");
- show_stack_log_lvl(NULL, regs, (unsigned long *)sp,
- 0, KERN_DEFAULT);
+ show_stack_log_lvl(NULL, regs, NULL, 0, KERN_DEFAULT);
printk(KERN_DEFAULT "Code: ");