Commit 3a98f871 authored by Thomas Gleixner's avatar Thomas Gleixner

idle: Implement set/clr functions for need_resched poll

Implement set/clear functions for the idle need_resched poll
implementation.
Signed-off-by: default avatarThomas 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: default avatarCc: 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.deSigned-off-by: default avatarThomas Gleixner <tglx@linutronix.de>
parent ee761f62
...@@ -2632,13 +2632,34 @@ static inline int tsk_is_polling(struct task_struct *p) ...@@ -2632,13 +2632,34 @@ static inline int tsk_is_polling(struct task_struct *p)
{ {
return task_thread_info(p)->status & TS_POLLING; return task_thread_info(p)->status & TS_POLLING;
} }
static inline void current_set_polling(void)
{
current_thread_info()->status |= TS_POLLING;
}
static inline void current_clr_polling(void)
{
current_thread_info()->status &= ~TS_POLLING;
smp_mb__after_clear_bit();
}
#elif defined(TIF_POLLING_NRFLAG) #elif defined(TIF_POLLING_NRFLAG)
static inline int tsk_is_polling(struct task_struct *p) static inline int tsk_is_polling(struct task_struct *p)
{ {
return test_tsk_thread_flag(p, TIF_POLLING_NRFLAG); return test_tsk_thread_flag(p, TIF_POLLING_NRFLAG);
} }
static inline void current_set_polling(void)
{
set_thread_flag(TIF_POLLING_NRFLAG);
}
static inline void current_clr_polling(void)
{
clear_thread_flag(TIF_POLLING_NRFLAG);
}
#else #else
static inline int tsk_is_polling(struct task_struct *p) { return 0; } static inline int tsk_is_polling(struct task_struct *p) { return 0; }
static inline void current_set_polling(void) { }
static inline void current_clr_polling(void) { }
#endif #endif
/* /*
......
Markdown is supported
0%
or
You are about to add 0 people to the discussion. Proceed with caution.
Finish editing this message first!
Please register or to comment