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| author | Ingo Molnar <mingo@elte.hu> | 2008-05-12 21:21:04 +0200 |
|---|---|---|
| committer | Thomas Gleixner <tglx@linutronix.de> | 2008-05-25 06:34:44 +0200 |
| commit | 9c44bc03fff44ff04237a7d92e35304a0e50c331 (patch) | |
| tree | 64704ff78933a3a3bd8549801308d0557c02980d /kernel/sysctl.c | |
| parent | 75d3bce2fc0a80f435fe12f2c9ed2632c8ac29e4 (diff) | |
| download | linux-9c44bc03fff44ff04237a7d92e35304a0e50c331.tar.gz linux-9c44bc03fff44ff04237a7d92e35304a0e50c331.tar.bz2 linux-9c44bc03fff44ff04237a7d92e35304a0e50c331.zip | |
softlockup: allow panic on lockup
allow users to configure the softlockup detector to generate a panic
instead of a warning message.
high-availability systems might opt for this strict method (combined
with panic_timeout= boot option/sysctl), instead of generating
softlockup warnings ad infinitum.
also, automated tests work better if the system reboots reliably (into
a safe kernel) in case of a lockup.
The full spectrum of configurability is supported: boot option, sysctl
option and Kconfig option.
it's default-disabled.
Signed-off-by: Ingo Molnar <mingo@elte.hu>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Diffstat (limited to 'kernel/sysctl.c')
| -rw-r--r-- | kernel/sysctl.c | 11 |
1 files changed, 11 insertions, 0 deletions
diff --git a/kernel/sysctl.c b/kernel/sysctl.c index 29116652dca8..2d3b388c402d 100644 --- a/kernel/sysctl.c +++ b/kernel/sysctl.c @@ -729,6 +729,17 @@ static struct ctl_table kern_table[] = { #ifdef CONFIG_DETECT_SOFTLOCKUP { .ctl_name = CTL_UNNUMBERED, + .procname = "softlockup_panic", + .data = &softlockup_panic, + .maxlen = sizeof(int), + .mode = 0644, + .proc_handler = &proc_doulongvec_minmax, + .strategy = &sysctl_intvec, + .extra1 = &zero, + .extra2 = &one, + }, + { + .ctl_name = CTL_UNNUMBERED, .procname = "softlockup_thresh", .data = &softlockup_thresh, .maxlen = sizeof(unsigned long), |