diff options
| author | Andrew Morton <akpm@osdl.org> | 2006-12-06 20:14:01 -0500 |
|---|---|---|
| committer | Andi Kleen <andi@basil.nowhere.org> | 2006-12-06 20:14:01 -0500 |
| commit | bb81a09e55eaf7e5f798468ab971469b6f66a259 (patch) | |
| tree | cf1ed6b0ad75137361228955535044fd4630a57b /include/asm-x86_64 | |
| parent | e5e3a0428968dcc1f9318ce1c941a918e99f8b84 (diff) | |
[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/asm-x86_64')
| -rw-r--r-- | include/asm-x86_64/nmi.h | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/include/asm-x86_64/nmi.h b/include/asm-x86_64/nmi.h index f367d4014b42..72375e7d32a8 100644 --- a/include/asm-x86_64/nmi.h +++ b/include/asm-x86_64/nmi.h | |||
| @@ -77,4 +77,7 @@ extern int proc_nmi_enabled(struct ctl_table *, int , struct file *, | |||
| 77 | 77 | ||
| 78 | extern int unknown_nmi_panic; | 78 | extern int unknown_nmi_panic; |
| 79 | 79 | ||
| 80 | void __trigger_all_cpu_backtrace(void); | ||
| 81 | #define trigger_all_cpu_backtrace() __trigger_all_cpu_backtrace() | ||
| 82 | |||
| 80 | #endif /* ASM_NMI_H */ | 83 | #endif /* ASM_NMI_H */ |