Commit-ID: 3a98f871ecaf44806e188184332c3fec27c8f08c
Gitweb: http://git.kernel.org/tip/3a98f871ecaf44806e188184332c3fec27c8f08c
Author: Thomas Gleixner <tglx@xxxxxxxxxxxxx>
AuthorDate: Thu, 21 Mar 2013 22:49:33 +0100
Committer: Thomas Gleixner <tglx@xxxxxxxxxxxxx>
CommitDate: Mon, 8 Apr 2013 17:39:22 +0200
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@xxxxxxxxxxxxx>
Cc: Linus Torvalds <torvalds@xxxxxxxxxxxxxxxxxxxx>
Cc: Rusty Russell <rusty@xxxxxxxxxxxxxxx>
Cc: Paul McKenney <paulmck@xxxxxxxxxxxxxxxxxx>
Cc: Peter Zijlstra <peterz@xxxxxxxxxxxxx>
Reviewed-by: Cc: Srivatsa S. Bhat <srivatsa.bhat@xxxxxxxxxxxxxxxxxx>
Cc: Magnus Damm <magnus.damm@xxxxxxxxx>
Link: http://lkml.kernel.org/r/20130321215233.518839807@xxxxxxxxxxxxx
Signed-off-by: Thomas Gleixner <tglx@xxxxxxxxxxxxx>
---
include/linux/sched.h | 21 +++++++++++++++++++++
1 file changed, 21 insertions(+)
diff --git a/include/linux/sched.h b/include/linux/sched.h
index 6709a58..21fe9a1 100644
--- a/include/linux/sched.h
+++ b/include/linux/sched.h
@@ -2632,13 +2632,34 @@ 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 void current_clr_polling(void)
+{
+ current_thread_info()->status &= ~TS_POLLING;
+ smp_mb__after_clear_bit();
+}
#elif defined(TIF_POLLING_NRFLAG)
static inline int tsk_is_polling(struct task_struct *p)
{
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
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
/*
--
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