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Commit 69dd0f84 authored by Peter Zijlstra's avatar Peter Zijlstra Committed by Ingo Molnar
Browse files

sched/idle: Remove TS_POLLING support 



Now that there are no architectures left using it, kill the support
for TS_POLLING.

Signed-off-by: default avatarPeter Zijlstra <peterz@infradead.org>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Andy Lutomirski <luto@amacapital.net>
Link: http://lkml.kernel.org/n/tip-6yurip2tfix2f4bfc5agu2s0@git.kernel.org


Signed-off-by: default avatarIngo Molnar <mingo@kernel.org>
parent f80c5b39

include/linux/sched.h

+2 −44
Original line number Diff line number Diff line
@@ -2775,51 +2775,9 @@ static inline int spin_needbreak(spinlock_t *lock) 


/*

 * 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

 * polling state.

 */

#ifdef TS_POLLING

static inline int tsk_is_polling(struct task_struct *p)

{

	return task_thread_info(p)->status & TS_POLLING;

}

static inline void __current_set_polling(void)

{

	current_thread_info()->status |= TS_POLLING;

}



static inline bool __must_check current_set_polling_and_test(void)

{

	__current_set_polling();



	/*

	 * Polling state must be visible before we test NEED_RESCHED,

	 * paired by resched_task()

	 */

	smp_mb();



	return unlikely(tif_need_resched());

}



static inline void __current_clr_polling(void)

{

	current_thread_info()->status &= ~TS_POLLING;

}



static inline bool __must_check current_clr_polling_and_test(void)

{

	__current_clr_polling();



	/*

	 * Polling state must be visible before we test NEED_RESCHED,

	 * paired by resched_task()

	 */

	smp_mb();



	return unlikely(tif_need_resched());

}

#elif defined(TIF_POLLING_NRFLAG)

#ifdef TIF_POLLING_NRFLAG

static inline int tsk_is_polling(struct task_struct *p)

{

	return test_tsk_thread_flag(p, TIF_POLLING_NRFLAG);