sched: Make migrate_disable/enable() independent of RT

Browse source

Now that the scheduler can deal with migrate disable properly, there is no
real compelling reason to make it only available for RT.

There are quite some code pathes which needlessly disable preemption in
order to prevent migration and some constructs like kmap_atomic() enforce
it implicitly.

Making it available independent of RT allows to provide a preemptible
variant of kmap_atomic() and makes the code more consistent in general.

Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Grudgingly-Acked-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Link: https://lore.kernel.org/r/20201118204007.269943012@linutronix.de

...

This commit is contained in:

Thomas Gleixner 2020-11-18 20:48:42 +01:00

parent fa50e2b452

commit 74d862b682

6 changed files with 56 additions and 56 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

21

include/linux/kernel.h

View file

38

include/linux/preempt.h

View file

2

include/linux/sched.h

View file

45

kernel/sched/core.c

View file

4

kernel/sched/sched.h

View file

2

lib/smp_processor_id.c

View file