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authorSebastian Andrzej Siewior <bigeasy@linutronix.de>2024-11-22 18:35:57 +0100
committerPeter Zijlstra <peterz@infradead.org>2024-12-02 12:01:28 +0100
commitf66e4a996582d59b6f5ce88078b0ad2a328aa532 (patch)
tree59941d2f3b1af8769a53cdcf93511246e15c8e20 /Documentation
parente932c4ab38f072ce5894b2851fea8bc5754bb8e5 (diff)
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.txt5
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