Messages in this thread | | | Date | Tue, 17 Aug 2021 16:43:48 +0200 | From | Sebastian Andrzej Siewior <> | Subject | Re: [PATCH v3 2/4] sched: Introduce migratable() |
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On 2021-08-11 21:13:52 [+0100], Valentin Schneider wrote: > diff --git a/include/linux/sched.h b/include/linux/sched.h > index debc960f41e3..8ba7b4a7ee69 100644 > --- a/include/linux/sched.h > +++ b/include/linux/sched.h > @@ -1715,6 +1715,16 @@ static inline bool is_percpu_thread(void) > #endif > } > > +/* Is the current task guaranteed to stay on its current CPU? */ > +static inline bool migratable(void) > +{ > +#ifdef CONFIG_SMP > + return preemptible() && !current->migration_disabled; > +#else > + return true;
shouldn't this be false in the UP case?
> +#endif > +} > + > /* Per-process atomic flags. */ > #define PFA_NO_NEW_PRIVS 0 /* May not gain new privileges. */ > #define PFA_SPREAD_PAGE 1 /* Spread page cache over cpuset */
Sebastian
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