diff options
| author |   Andrew Morton <akpm@osdl.org> | 2006-12-07 02:14:01 +0100 |
|---|---|---|
| committer |   Andi Kleen <andi@basil.nowhere.org> | 2006-12-07 02:14:01 +0100 |
| commit | bb81a09e55eaf7e5f798468ab971469b6f66a259 (patch) | |
| tree | cf1ed6b0ad75137361228955535044fd4630a57b /include/linux/nmi.h | |
| parent | [PATCH] i386: remove default_ldt, and simplify ldt-setting. (diff) | |
| download | linux-dev-bb81a09e55eaf7e5f798468ab971469b6f66a259.tar.xz linux-dev-bb81a09e55eaf7e5f798468ab971469b6f66a259.zip | |
[PATCH] x86: all cpu backtrace
When a spinlock lockup occurs, arrange for the NMI code to emit an all-cpu
backtrace, so we get to see which CPU is holding the lock, and where.
Cc: Andi Kleen <ak@muc.de>
Cc: Ingo Molnar <mingo@elte.hu>
Cc: Badari Pulavarty <pbadari@us.ibm.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Andi Kleen <ak@suse.de>
Diffstat (limited to 'include/linux/nmi.h')
| -rw-r--r-- | include/linux/nmi.h | 5 |
1 files changed, 5 insertions, 0 deletions
diff --git a/include/linux/nmi.h b/include/linux/nmi.h index e16904e28c3a..acb4ed130247 100644 --- a/include/linux/nmi.h +++ b/include/linux/nmi.h @@ -15,9 +15,14 @@ * disables interrupts for a long time. This call is stateless. */ #ifdef ARCH_HAS_NMI_WATCHDOG +#include <asm/nmi.h> extern void touch_nmi_watchdog(void); #else # define touch_nmi_watchdog() touch_softlockup_watchdog() #endif +#ifndef trigger_all_cpu_backtrace +#define trigger_all_cpu_backtrace() do { } while (0) +#endif + #endif |