Messages in this thread Patch in this message | | | From | Andi Kleen <> | Subject | [PATCH] [23/28] x86: MCE: Improve documentation | Date | Tue, 7 Apr 2009 17:08:06 +0200 (CEST) |
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Document that check_interval set to 0 means no polling. Noticed by Hidetoshi Seto
Also add a reference from boot options to the sysfs tunables
Cc: seto.hidetoshi@jp.fujitsu.com
Signed-off-by: Andi Kleen <ak@linux.intel.com>
--- Documentation/x86/x86_64/boot-options.txt | 2 ++ Documentation/x86/x86_64/machinecheck | 4 +++- 2 files changed, 5 insertions(+), 1 deletion(-)
Index: linux/Documentation/x86/x86_64/machinecheck =================================================================== --- linux.orig/Documentation/x86/x86_64/machinecheck 2009-04-07 16:09:59.000000000 +0200 +++ linux/Documentation/x86/x86_64/machinecheck 2009-04-07 16:09:59.000000000 +0200 @@ -41,7 +41,9 @@ the polling interval. When the poller stops finding MCEs, it triggers an exponential backoff (poll less often) on the polling interval. The check_interval variable is both the initial and - maximum polling interval. + maximum polling interval. 0 means no polling for corrected machine + check errors (but some corrected errors might be still reported + in other ways) tolerant Tolerance level. When a machine check exception occurs for a non Index: linux/Documentation/x86/x86_64/boot-options.txt =================================================================== --- linux.orig/Documentation/x86/x86_64/boot-options.txt 2009-04-07 16:09:59.000000000 +0200 +++ linux/Documentation/x86/x86_64/boot-options.txt 2009-04-07 16:09:59.000000000 +0200 @@ -5,6 +5,8 @@ Machine check + Please see Documentation/x86/x86_64/machinecheck for sysfs runtime tunables. + mce=off disable machine check mce=bootlog Enable logging of machine checks left over from booting. Disabled by default on AMD because some BIOS leave bogus ones.
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