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| author |   Don Zickus <dzickus@redhat.com> | 2010-11-29 17:07:17 -0500 |
|---|---|---|
| committer |   Ingo Molnar <mingo@elte.hu> | 2010-12-10 00:01:06 +0100 |
| commit | 5dc3055879b8f659f62abb7c3d1eaa4d02e36d65 (patch) | |
| tree | 823b69dd3ed28bc9d05fc4ecf31e780341efdf5b /Documentation/kernel-parameters.txt | |
| parent | lockup detector: Compile fixes from removing the old x86 nmi watchdog (diff) | |
| download | linux-dev-5dc3055879b8f659f62abb7c3d1eaa4d02e36d65.tar.xz linux-dev-5dc3055879b8f659f62abb7c3d1eaa4d02e36d65.zip | |
x86, NMI: Add back unknown_nmi_panic and nmi_watchdog sysctls
Originally adapted from Huang Ying's patch which moved the
unknown_nmi_panic to the traps.c file. Because the old nmi
watchdog was deleted before this change happened, the
unknown_nmi_panic sysctl was lost. This re-adds it.
Also, the nmi_watchdog sysctl was re-implemented and its
documentation updated accordingly.
Patch-inspired-by: Huang Ying <ying.huang@intel.com>
Signed-off-by: Don Zickus <dzickus@redhat.com>
Reviewed-by: Cyrill Gorcunov <gorcunov@gmail.com>
Acked-by: Yinghai Lu <yinghai@kernel.org>
Cc: fweisbec@gmail.com
LKML-Reference: <1291068437-5331-3-git-send-email-dzickus@redhat.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
Diffstat (limited to 'Documentation/kernel-parameters.txt')
| -rw-r--r-- | Documentation/kernel-parameters.txt | 10 |
1 files changed, 1 insertions, 9 deletions
diff --git a/Documentation/kernel-parameters.txt b/Documentation/kernel-parameters.txt index cdd2a6e8a3b7..5e55e4623ab5 100644 --- a/Documentation/kernel-parameters.txt +++ b/Documentation/kernel-parameters.txt @@ -1579,20 +1579,12 @@ and is between 256 and 4096 characters. It is defined in the file nmi_watchdog= [KNL,BUGS=X86] Debugging features for SMP kernels Format: [panic,][num] - Valid num: 0,1,2 + Valid num: 0 0 - turn nmi_watchdog off - 1 - use the IO-APIC timer for the NMI watchdog - 2 - use the local APIC for the NMI watchdog using - a performance counter. Note: This will use one - performance counter and the local APIC's performance - vector. When panic is specified, panic when an NMI watchdog timeout occurs. This is useful when you use a panic=... timeout and need the box quickly up again. - Instead of 1 and 2 it is possible to use the following - symbolic names: lapic and ioapic - Example: nmi_watchdog=2 or nmi_watchdog=panic,lapic netpoll.carrier_timeout= [NET] Specifies amount of time (in seconds) that |