From ee761f629d598579594d7e1eb8c552f3c5f71e4d Mon Sep 17 00:00:00 2001 From: Thomas Gleixner Date: Thu, 21 Mar 2013 22:49:32 +0100 Subject: arch: Consolidate tsk_is_polling() Move it to a common place. Preparatory patch for implementing set/clear for the idle need_resched poll implementation. Signed-off-by: Thomas Gleixner Cc: Linus Torvalds Cc: Rusty Russell Cc: Paul McKenney Cc: Peter Zijlstra Reviewed-by: Cc: Srivatsa S. Bhat Cc: Magnus Damm Link: http://lkml.kernel.org/r/20130321215233.446034505@linutronix.de Signed-off-by: Thomas Gleixner --- include/linux/sched.h | 20 ++++++++++++++++++++ 1 file changed, 20 insertions(+) (limited to 'include') diff --git a/include/linux/sched.h b/include/linux/sched.h index d35d2b6ddbf..6709a5813f2 100644 --- a/include/linux/sched.h +++ b/include/linux/sched.h @@ -2621,6 +2621,26 @@ static inline int spin_needbreak(spinlock_t *lock) #endif } +/* + * Idle thread specific functions to determine the need_resched + * polling state. We have two versions, one based on TS_POLLING in + * thread_info.status and one based on TIF_POLLING_NRFLAG in + * thread_info.flags + */ +#ifdef TS_POLLING +static inline int tsk_is_polling(struct task_struct *p) +{ + return task_thread_info(p)->status & TS_POLLING; +} +#elif defined(TIF_POLLING_NRFLAG) +static inline int tsk_is_polling(struct task_struct *p) +{ + return test_tsk_thread_flag(p, TIF_POLLING_NRFLAG); +} +#else +static inline int tsk_is_polling(struct task_struct *p) { return 0; } +#endif + /* * Thread group CPU time accounting. */ -- cgit v1.2.3-70-g09d2