idle: Implement set/clr functions for need_resched poll
Implement set/clear functions for the idle need_resched poll implementation. Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Cc: Linus Torvalds <torvalds@linux-foundation.org> Cc: Rusty Russell <rusty@rustcorp.com.au> Cc: Paul McKenney <paulmck@linux.vnet.ibm.com> Cc: Peter Zijlstra <peterz@infradead.org> Reviewed-by: Cc: Srivatsa S. Bhat <srivatsa.bhat@linux.vnet.ibm.com> Cc: Magnus Damm <magnus.damm@gmail.com> Link: http://lkml.kernel.org/r/20130321215233.518839807@linutronix.de Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
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@ -2632,13 +2632,34 @@ static inline int tsk_is_polling(struct task_struct *p)
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{
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return task_thread_info(p)->status & TS_POLLING;
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}
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static inline void current_set_polling(void)
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{
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current_thread_info()->status |= TS_POLLING;
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}
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static inline void current_clr_polling(void)
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{
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current_thread_info()->status &= ~TS_POLLING;
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smp_mb__after_clear_bit();
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}
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#elif defined(TIF_POLLING_NRFLAG)
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static inline int tsk_is_polling(struct task_struct *p)
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{
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return test_tsk_thread_flag(p, TIF_POLLING_NRFLAG);
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}
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static inline void current_set_polling(void)
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{
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set_thread_flag(TIF_POLLING_NRFLAG);
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}
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static inline void current_clr_polling(void)
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{
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clear_thread_flag(TIF_POLLING_NRFLAG);
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}
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#else
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static inline int tsk_is_polling(struct task_struct *p) { return 0; }
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static inline void current_set_polling(void) { }
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static inline void current_clr_polling(void) { }
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#endif
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/*
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