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authorThomas Gleixner <tglx@linutronix.de>2011-05-20 16:18:50 +0200
committerThomas Gleixner <tglx@linutronix.de>2011-05-23 13:59:53 +0200
commit9ec2690758a5467f24beb301cca5098078073bba (patch)
treee5bc78f690d12635a56460ea6f54b49318221dc8 /include/linux/timerfd.h
parent250f972d85effad5b6e10da4bbd877e6a4b503b6 (diff)
downloadop-kernel-dev-9ec2690758a5467f24beb301cca5098078073bba.zip
op-kernel-dev-9ec2690758a5467f24beb301cca5098078073bba.tar.gz
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.h4
1 files changed, 2 insertions, 2 deletions
diff --git a/include/linux/timerfd.h b/include/linux/timerfd.h
index e9571fc..d3b57fa 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 */
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