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authorLen Brown <len.brown@intel.com>2010-05-24 11:34:36 -0400
committerLen Brown <len.brown@intel.com>2010-05-27 21:07:05 -0400
commite45b7fa23097332508730123ac6d59227e7bd7f8 (patch)
treed01df835310c200523e4ad5564ffd1e960b17fc7 /arch
parent541adf7cd937b3895c7645406a9b060504df453b (diff)
sched: clarify commment for TS_POLLING
TS_POLLING set tells the scheduler an idle_task will poll need_resched() to look for work. TS_POLLING clear tells resched_task() and wake_up_idle_cpu() that the remote CPU's idle_task is now sleeping in idle, and thus requires a reschedule interrupt notice work. Update the description of TS_POLLING to reflect how it works. "idle task polling need_resched, skip sending interrupt" Wordsmithing-by: Milton Miller <miltonm@bga.com> Signed-off-by: Len Brown <len.brown@intel.com> Acked-by: Peter Zijlstra <peterz@infradead.org>
Diffstat (limited to 'arch')
-rw-r--r--arch/x86/include/asm/thread_info.h4
1 files changed, 2 insertions, 2 deletions
diff --git a/arch/x86/include/asm/thread_info.h b/arch/x86/include/asm/thread_info.h
index e0d28901e96..812186919bb 100644
--- a/arch/x86/include/asm/thread_info.h
+++ b/arch/x86/include/asm/thread_info.h
@@ -241,8 +241,8 @@ static inline struct thread_info *current_thread_info(void)
#define TS_USEDFPU 0x0001 /* FPU was used by this task
this quantum (SMP) */
#define TS_COMPAT 0x0002 /* 32bit syscall active (64BIT)*/
-#define TS_POLLING 0x0004 /* true if in idle loop
- and not sleeping */
+#define TS_POLLING 0x0004 /* idle task polling need_resched,
+ skip sending interrupt */
#define TS_RESTORE_SIGMASK 0x0008 /* restore signal mask in do_signal() */
#define TS_XSAVE 0x0010 /* Use xsave/xrstor */