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| author | Ravikiran G Thirumalai <kiran@scalex86.org> | 2007-10-16 23:26:09 -0700 |
|---|---|---|
| committer | Linus Torvalds <torvalds@woody.linux-foundation.org> | 2007-10-17 08:42:47 -0700 |
| commit | c4f3b63fe15b4629aa1ec163c95ab30423d0f76a (patch) | |
| tree | 432723f1c7ac2fcff0aa57377c31187140d69145 /include/linux/sched.h | |
| parent | a5f2ce3c6024a5bb895647b6bd88ecae5001020a (diff) | |
| download | lwn-c4f3b63fe15b4629aa1ec163c95ab30423d0f76a.tar.gz lwn-c4f3b63fe15b4629aa1ec163c95ab30423d0f76a.zip | |
softlockup: add a /proc tuning parameter
Control the trigger limit for softlockup warnings. This is useful for
debugging softlockups, by lowering the softlockup_thresh to identify
possible softlockups earlier.
This patch:
1. Adds a sysctl softlockup_thresh with valid values of 1-60s
(Higher value to disable false positives)
2. Changes the softlockup printk to print the cpu softlockup time
[akpm@linux-foundation.org: Fix various warnings and add definition of "two"]
Signed-off-by: Ravikiran Thirumalai <kiran@scalex86.org>
Signed-off-by: Shai Fultheim <shai@scalex86.org>
Acked-by: Ingo Molnar <mingo@elte.hu>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'include/linux/sched.h')
| -rw-r--r-- | include/linux/sched.h | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/include/linux/sched.h b/include/linux/sched.h index 59738efff8ad..e643357eda05 100644 --- a/include/linux/sched.h +++ b/include/linux/sched.h @@ -261,6 +261,7 @@ extern void softlockup_tick(void); extern void spawn_softlockup_task(void); extern void touch_softlockup_watchdog(void); extern void touch_all_softlockup_watchdogs(void); +extern int softlockup_thresh; #else static inline void softlockup_tick(void) { |