diff options
| author | Thomas Gleixner <tglx@linutronix.de> | 2020-11-18 20:48:42 +0100 |
|---|---|---|
| committer | Thomas Gleixner <tglx@linutronix.de> | 2020-11-24 11:25:44 +0100 |
| commit | 74d862b682f51e45d25b95b1ecf212428a4967b0 (patch) | |
| tree | 69c1c8a1105267cd8afc5a1c1b1ff019bcf9e37e /include/linux/sched.h | |
| parent | fa50e2b452c60cff9f4000de5b372a61d6695c26 (diff) | |
| download | lwn-74d862b682f51e45d25b95b1ecf212428a4967b0.tar.gz lwn-74d862b682f51e45d25b95b1ecf212428a4967b0.zip | |
sched: Make migrate_disable/enable() independent of RT
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
Diffstat (limited to 'include/linux/sched.h')
| -rw-r--r-- | include/linux/sched.h | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/include/linux/sched.h b/include/linux/sched.h index 3af9d52fe093..a33f35f68060 100644 --- a/include/linux/sched.h +++ b/include/linux/sched.h @@ -715,7 +715,7 @@ struct task_struct { const cpumask_t *cpus_ptr; cpumask_t cpus_mask; void *migration_pending; -#if defined(CONFIG_SMP) && defined(CONFIG_PREEMPT_RT) +#ifdef CONFIG_SMP unsigned short migration_disabled; #endif unsigned short migration_flags; |