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| author | Sebastian Andrzej Siewior <bigeasy@linutronix.de> | 2024-11-22 18:35:57 +0100 |
|---|---|---|
| committer | Peter Zijlstra <peterz@infradead.org> | 2024-12-02 12:01:28 +0100 |
| commit | f66e4a996582d59b6f5ce88078b0ad2a328aa532 (patch) | |
| tree | 59941d2f3b1af8769a53cdcf93511246e15c8e20 /Documentation | |
| parent | sched/core: Prevent wakeup of ksoftirqd during idle load balance (diff) | |
| download | linux-f66e4a996582d59b6f5ce88078b0ad2a328aa532.tar.xz linux-f66e4a996582d59b6f5ce88078b0ad2a328aa532.zip | |
sched/core: Update kernel boot parameters for LAZY preempt.
Update the documentation for the `preempt=' parameter which now also
accepts `lazy'.
Fixes: 7c70cb94d29cd ("sched: Add Lazy preemption model")
Reported-by: Shrikanth Hegde <sshegde@linux.ibm.com>
Signed-off-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Reviewed-by: Shrikanth Hegde <sshegde@linux.ibm.com>
Link: https://lore.kernel.org/r/20241122173557.MYOtT95Q@linutronix.de
Diffstat (limited to 'Documentation')
| -rw-r--r-- | Documentation/admin-guide/kernel-parameters.txt | 5 |
1 files changed, 5 insertions, 0 deletions
diff --git a/Documentation/admin-guide/kernel-parameters.txt b/Documentation/admin-guide/kernel-parameters.txt index dc663c0ca670..3872bc6ec49d 100644 --- a/Documentation/admin-guide/kernel-parameters.txt +++ b/Documentation/admin-guide/kernel-parameters.txt @@ -4822,6 +4822,11 @@ can be preempted anytime. Tasks will also yield contended spinlocks (if the critical section isn't explicitly preempt disabled beyond the lock itself). + lazy - Scheduler controlled. Similar to full but instead + of preempting the task immediately, the task gets + one HZ tick time to yield itself before the + preemption will be forced. One preemption is when the + task returns to user space. print-fatal-signals= [KNL] debug: print fatal signals |