hrtimer: Provide a static branch based hrtimer_hres_enabled()

Browse source

The scheduler evaluates this via hrtimer_is_hres_active() every time it has
to update HRTICK. This needs to follow three pointers, which is expensive.

Provide a static branch based mechanism to avoid that.

Signed-off-by: Thomas Gleixner <tglx@kernel.org>
Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Link: https://patch.msgid.link/20260224163429.136503358@kernel.org

...

This commit is contained in:

Thomas Gleixner 2026-02-24 17:35:42 +01:00 • committed by Peter Zijlstra

parent d19ff16c11

commit 0a93d30861

2 changed files with 34 additions and 7 deletions

Show all changes Ignore whitespace when comparing lines Ignore changes in amount of whitespace Ignore changes in whitespace at EOL

Download patch file Download diff file Expand all files Collapse all files

13

include/linux/hrtimer.h

View file