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| author | Josh Poimboeuf <jpoimboe@redhat.com> | 2016-08-24 16:50:18 (GMT) |
|---|---|---|
| committer | Ingo Molnar <mingo@kernel.org> | 2016-09-08 06:58:40 (GMT) |
| commit | 5a8ff54c260ecfed3de9b8d1272eb87826935df8 (patch) | |
| tree | b1c2b4c3166e42e6b41ebc9d4c3b48547d96ce95 /arch/x86/oprofile | |
| parent | 4b8afafbe743be1a81c96ddcd75b19c534d5e262 (diff) | |
| download | linux-5a8ff54c260ecfed3de9b8d1272eb87826935df8.tar.xz | |
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/oprofile')
| -rw-r--r-- | arch/x86/oprofile/backtrace.c | 5 |
1 files changed, 1 insertions, 4 deletions
diff --git a/arch/x86/oprofile/backtrace.c b/arch/x86/oprofile/backtrace.c index 2ef6c8b..d950f9e 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; } |