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| author | Josh Poimboeuf <jpoimboe@redhat.com> | 2017-07-25 08:54:24 -0500 |
|---|---|---|
| committer | Ingo Molnar <mingo@kernel.org> | 2017-07-26 14:05:36 +0200 |
| commit | 81d387190039c14edac8de2b3ec789beb899afd9 (patch) | |
| tree | 73d1c44e4b1b212457e9cea254ee7d69ccc4ba75 /arch/x86/include/asm/unwind.h | |
| parent | a34a766ff96d9e88572e35a45066279e40a85d84 (diff) | |
| download | linux-0-day-81d387190039c14edac8de2b3ec789beb899afd9.tar.gz linux-0-day-81d387190039c14edac8de2b3ec789beb899afd9.tar.xz | |
x86/kconfig: Consolidate unwinders into multiple choice selection
There are three mutually exclusive unwinders. Make that more obvious by
combining them into a multiple-choice selection:
CONFIG_FRAME_POINTER_UNWINDER
CONFIG_ORC_UNWINDER
CONFIG_GUESS_UNWINDER (if CONFIG_EXPERT=y)
Frame pointers are still the default (for now).
The old CONFIG_FRAME_POINTER option is still used in some
arch-independent places, so keep it around, but make it
invisible to the user on x86 - it's now selected by
CONFIG_FRAME_POINTER_UNWINDER=y.
Suggested-by: Ingo Molnar <mingo@kernel.org>
Signed-off-by: Josh Poimboeuf <jpoimboe@redhat.com>
Cc: Andy Lutomirski <luto@kernel.org>
Cc: Borislav Petkov <bp@alien8.de>
Cc: Brian Gerst <brgerst@gmail.com>
Cc: Denys Vlasenko <dvlasenk@redhat.com>
Cc: H. Peter Anvin <hpa@zytor.com>
Cc: Jiri Slaby <jslaby@suse.cz>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Mike Galbraith <efault@gmx.de>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: live-patching@vger.kernel.org
Link: http://lkml.kernel.org/r/20170725135424.zukjmgpz3plf5pmt@treble
Signed-off-by: Ingo Molnar <mingo@kernel.org>
Diffstat (limited to 'arch/x86/include/asm/unwind.h')
| -rw-r--r-- | arch/x86/include/asm/unwind.h | 4 |
1 files changed, 2 insertions, 2 deletions
diff --git a/arch/x86/include/asm/unwind.h b/arch/x86/include/asm/unwind.h index 25b8d31a007d2..e9f793e2df7a1 100644 --- a/arch/x86/include/asm/unwind.h +++ b/arch/x86/include/asm/unwind.h @@ -16,7 +16,7 @@ struct unwind_state { bool signal, full_regs; unsigned long sp, bp, ip; struct pt_regs *regs; -#elif defined(CONFIG_FRAME_POINTER) +#elif defined(CONFIG_FRAME_POINTER_UNWINDER) bool got_irq; unsigned long *bp, *orig_sp, ip; struct pt_regs *regs; @@ -50,7 +50,7 @@ void unwind_start(struct unwind_state *state, struct task_struct *task, __unwind_start(state, task, regs, first_frame); } -#if defined(CONFIG_ORC_UNWINDER) || defined(CONFIG_FRAME_POINTER) +#if defined(CONFIG_ORC_UNWINDER) || defined(CONFIG_FRAME_POINTER_UNWINDER) static inline struct pt_regs *unwind_get_entry_regs(struct unwind_state *state) { if (unwind_done(state)) |