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author | Waiman Long <longman@redhat.com> | 2021-11-18 14:14:37 -0500 |
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committer | Paul E. McKenney <paulmck@kernel.org> | 2021-11-30 17:22:29 -0800 |
commit | 1a5620671a1b6fd9cc08761677d050f1702f910c (patch) | |
tree | 4e57d639dbbb2b30439391cbe312d2fa43e7a139 /Documentation/admin-guide | |
parent | c86ff8c55b8ae68837b2fa59dc0c203907e9a15f (diff) | |
download | linux-1a5620671a1b6fd9cc08761677d050f1702f910c.tar.bz2 |
clocksource: Reduce the default clocksource_watchdog() retries to 2
With the previous patch, there is an extra watchdog read in each retry.
Now the total number of clocksource reads is increased to 4 per iteration.
In order to avoid increasing the clock skew check overhead, the default
maximum number of retries is reduced from 3 to 2 to maintain the same 12
clocksource reads in the worst case.
Suggested-by: Paul E. McKenney <paulmck@kernel.org>
Signed-off-by: Waiman Long <longman@redhat.com>
Signed-off-by: Paul E. McKenney <paulmck@kernel.org>
Diffstat (limited to 'Documentation/admin-guide')
-rw-r--r-- | Documentation/admin-guide/kernel-parameters.txt | 4 |
1 files changed, 2 insertions, 2 deletions
diff --git a/Documentation/admin-guide/kernel-parameters.txt b/Documentation/admin-guide/kernel-parameters.txt index 9725c546a0d4..3ea934b034f7 100644 --- a/Documentation/admin-guide/kernel-parameters.txt +++ b/Documentation/admin-guide/kernel-parameters.txt @@ -603,8 +603,8 @@ clocksource.max_cswd_read_retries= [KNL] Number of clocksource_watchdog() retries due to external delays before the clock will be marked - unstable. Defaults to three retries, that is, - four attempts to read the clock under test. + unstable. Defaults to two retries, that is, + three attempts to read the clock under test. clocksource.verify_n_cpus= [KNL] Limit the number of CPUs checked for clocksources |