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| author | Thomas Gleixner <tglx@linutronix.de> | 2011-05-20 16:18:50 +0200 |
|---|---|---|
| committer | Thomas Gleixner <tglx@linutronix.de> | 2011-05-23 13:59:53 +0200 |
| commit | 9ec2690758a5467f24beb301cca5098078073bba (patch) | |
| tree | e5bc78f690d12635a56460ea6f54b49318221dc8 /include/linux/timerfd.h | |
| parent | 250f972d85effad5b6e10da4bbd877e6a4b503b6 (diff) | |
| download | lwn-9ec2690758a5467f24beb301cca5098078073bba.tar.gz lwn-9ec2690758a5467f24beb301cca5098078073bba.zip | |
timerfd: Manage cancelable timers in timerfd
Peter is concerned about the extra scan of CLOCK_REALTIME_COS in the
timer interrupt. Yes, I did not think about it, because the solution
was so elegant. I didn't like the extra list in timerfd when it was
proposed some time ago, but with a rcu based list the list walk it's
less horrible than the original global lock, which was held over the
list iteration.
Requested-by: Peter Zijlstra <peterz@infradead.org>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Reviewed-by: Peter Zijlstra <peterz@infradead.org>
Diffstat (limited to 'include/linux/timerfd.h')
| -rw-r--r-- | include/linux/timerfd.h | 4 |
1 files changed, 2 insertions, 2 deletions
diff --git a/include/linux/timerfd.h b/include/linux/timerfd.h index e9571fc8f1a0..d3b57fa12225 100644 --- a/include/linux/timerfd.h +++ b/include/linux/timerfd.h @@ -19,7 +19,7 @@ * shared O_* flags. */ #define TFD_TIMER_ABSTIME (1 << 0) -#define TFD_TIMER_CANCELON_SET (1 << 1) +#define TFD_TIMER_CANCEL_ON_SET (1 << 1) #define TFD_CLOEXEC O_CLOEXEC #define TFD_NONBLOCK O_NONBLOCK @@ -27,6 +27,6 @@ /* Flags for timerfd_create. */ #define TFD_CREATE_FLAGS TFD_SHARED_FCNTL_FLAGS /* Flags for timerfd_settime. */ -#define TFD_SETTIME_FLAGS (TFD_TIMER_ABSTIME | TFD_TIMER_CANCELON_SET) +#define TFD_SETTIME_FLAGS (TFD_TIMER_ABSTIME | TFD_TIMER_CANCEL_ON_SET) #endif /* _LINUX_TIMERFD_H */ |