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| author | Ravikiran G Thirumalai <kiran@scalex86.org> | 2007-10-17 08:26:09 +0200 |
|---|---|---|
| committer | Linus Torvalds <torvalds@woody.linux-foundation.org> | 2007-10-17 17:42:47 +0200 |
| commit | c4f3b63fe15b4629aa1ec163c95ab30423d0f76a (patch) | |
| tree | 432723f1c7ac2fcff0aa57377c31187140d69145 /Documentation/sysctl/kernel.txt | |
| parent | softlockup watchdog: style cleanups (diff) | |
| download | linux-c4f3b63fe15b4629aa1ec163c95ab30423d0f76a.tar.xz linux-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 'Documentation/sysctl/kernel.txt')
| -rw-r--r-- | Documentation/sysctl/kernel.txt | 8 |
1 files changed, 8 insertions, 0 deletions
diff --git a/Documentation/sysctl/kernel.txt b/Documentation/sysctl/kernel.txt index 111fd28727ec..8984a5396271 100644 --- a/Documentation/sysctl/kernel.txt +++ b/Documentation/sysctl/kernel.txt @@ -320,6 +320,14 @@ kernel. This value defaults to SHMMAX. ============================================================== +softlockup_thresh: + +This value can be used to lower the softlockup tolerance +threshold. The default threshold is 10s. If a cpu is locked up +for 10s, the kernel complains. Valid values are 1-60s. + +============================================================== + tainted: Non-zero if the kernel has been tainted. Numeric values, which |