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authorThomas Gleixner <tglx@linutronix.de>2018-03-01 17:33:32 +0100
committerIngo Molnar <mingo@kernel.org>2018-03-13 07:34:21 +0100
commit72199320d49dbafa1a99f94f1cd60dc90035c154 (patch)
treeca7a4e1337c8f56b404e4d7af0de73115fee88ce /include/uapi/linux/time.h
parent78b98e3c5a66d569a53b8f57b6a698f912794a43 (diff)
timekeeping: Add the new CLOCK_MONOTONIC_ACTIVE clock
The planned change to unify the behaviour of the MONOTONIC and BOOTTIME clocks vs. suspend removes the ability to retrieve the active non-suspended time of a system. Provide a new CLOCK_MONOTONIC_ACTIVE clock which returns the active non-suspended time of the system via clock_gettime(). This preserves the old behaviour of CLOCK_MONOTONIC before the BOOTTIME/MONOTONIC unification. This new clock also allows applications to detect programmatically that the MONOTONIC and BOOTTIME clocks are identical. Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Cc: Dmitry Torokhov <dmitry.torokhov@gmail.com> Cc: John Stultz <john.stultz@linaro.org> Cc: Jonathan Corbet <corbet@lwn.net> Cc: Kevin Easton <kevin@guarana.org> Cc: Linus Torvalds <torvalds@linux-foundation.org> Cc: Mark Salyzyn <salyzyn@android.com> Cc: Michael Kerrisk <mtk.manpages@gmail.com> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Petr Mladek <pmladek@suse.com> Cc: Prarit Bhargava <prarit@redhat.com> Cc: Sergey Senozhatsky <sergey.senozhatsky@gmail.com> Cc: Steven Rostedt <rostedt@goodmis.org> Link: http://lkml.kernel.org/r/20180301165149.965235774@linutronix.de Signed-off-by: Ingo Molnar <mingo@kernel.org>
Diffstat (limited to 'include/uapi/linux/time.h')
-rw-r--r--include/uapi/linux/time.h1
1 files changed, 1 insertions, 0 deletions
diff --git a/include/uapi/linux/time.h b/include/uapi/linux/time.h
index 53f8dd84beb5..61a187df8da2 100644
--- a/include/uapi/linux/time.h
+++ b/include/uapi/linux/time.h
@@ -61,6 +61,7 @@ struct itimerval {
*/
#define CLOCK_SGI_CYCLE 10
#define CLOCK_TAI 11
+#define CLOCK_MONOTONIC_ACTIVE 12
#define MAX_CLOCKS 16
#define CLOCKS_MASK (CLOCK_REALTIME | CLOCK_MONOTONIC)