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| author |   Thomas Gleixner <tglx@linutronix.de> | 2018-03-01 17:33:32 +0100 |
|---|---|---|
| committer |   Ingo Molnar <mingo@kernel.org> | 2018-03-13 07:34:21 +0100 |
| commit | 72199320d49dbafa1a99f94f1cd60dc90035c154 (patch) | |
| tree | ca7a4e1337c8f56b404e4d7af0de73115fee88ce /include/uapi/linux/time.h | |
| parent | timekeeping/ntp: Determine the multiplier directly from NTP tick length (diff) | |
| download | linux-dev-72199320d49dbafa1a99f94f1cd60dc90035c154.tar.xz linux-dev-72199320d49dbafa1a99f94f1cd60dc90035c154.zip | |
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.h | 1 |
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) |