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| author | Len Brown <len.brown@intel.com> | 2010-05-24 17:34:36 +0200 |
|---|---|---|
| committer | Len Brown <len.brown@intel.com> | 2010-05-28 03:07:05 +0200 |
| commit | e45b7fa23097332508730123ac6d59227e7bd7f8 (patch) | |
| tree | d01df835310c200523e4ad5564ffd1e960b17fc7 /arch/x86/include/asm/thread_info.h | |
| parent | ACPI: allow a native cpuidle driver to displace ACPI (diff) | |
| download | linux-e45b7fa23097332508730123ac6d59227e7bd7f8.tar.xz linux-e45b7fa23097332508730123ac6d59227e7bd7f8.zip | |
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/x86/include/asm/thread_info.h')
| -rw-r--r-- | arch/x86/include/asm/thread_info.h | 4 |
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 e0d28901e969..812186919bba 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 */ |