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| author |  Fenghua Yu <fenghua.yu@intel.com>
| 2021-04-19 21:49:57 +0000 |
|---|---|---|
| committer |  Thomas Gleixner <tglx@linutronix.de>
| 2021-05-18 16:39:31 +0200 |
| commit | 9d839c280b64817345c2fa462c0027a9bd742361 (patch) | |
| tree | d1414094802fbe84dddebc964f73174b1dc18b99 /Documentation/admin-guide | |
| parent | x86/bus_lock: Set rate limit for bus lock (diff) | |
| download | linux-9d839c280b64817345c2fa462c0027a9bd742361.tar.gz linux-9d839c280b64817345c2fa462c0027a9bd742361.tar.bz2 linux-9d839c280b64817345c2fa462c0027a9bd742361.zip | |
Documentation/admin-guide: Add bus lock ratelimit
Since bus lock rate limit changes the split_lock_detect parameter,
update the documentation for the change.
Signed-off-by: Fenghua Yu <fenghua.yu@intel.com>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Reviewed-by: Tony Luck <tony.luck@intel.com>
Link: https://lore.kernel.org/r/20210419214958.4035512-4-fenghua.yu@intel.com
Diffstat (limited to 'Documentation/admin-guide')
| -rw-r--r-- | Documentation/admin-guide/kernel-parameters.txt | 8 |
1 files changed, 8 insertions, 0 deletions
diff --git a/Documentation/admin-guide/kernel-parameters.txt b/Documentation/admin-guide/kernel-parameters.txt index cb89dbdedc46..ca94624438b9 100644 --- a/Documentation/admin-guide/kernel-parameters.txt +++ b/Documentation/admin-guide/kernel-parameters.txt @@ -5283,6 +5283,14 @@ exception. Default behavior is by #AC if both features are enabled in hardware. + ratelimit:N - + Set system wide rate limit to N bus locks + per second for bus lock detection. + 0 < N <= 1000. + + N/A for split lock detection. + + If an #AC exception is hit in the kernel or in firmware (i.e. not while executing in user mode) the kernel will oops in either "warn" or "fatal" |