diff options
| author | Steve Muckle <smuckle@codeaurora.org> | 2014-10-14 13:51:34 -0700 |
|---|---|---|
| committer | David Keitel <dkeitel@codeaurora.org> | 2016-03-23 20:01:02 -0700 |
| commit | 2365b0cbd64fe7a00ec2cfd3b7d8a20df640e095 (patch) | |
| tree | f7fb0615390ecc425f018fd6e0f186286c8690f8 /include/linux | |
| parent | 59512f4e49ab5723faec8d3404a704c163e8b744 (diff) | |
sched: tighten up jiffy to sched_clock mapping
The tick code already tracks exact time a tick is expected
to arrive. This can be used to eliminate slack in the jiffy
to sched_clock mapping that aligns windows between a caller
of sched_set_window and the scheduler itself.
Change-Id: I9d47466658d01e6857d7457405459436d504a2ca
Signed-off-by: Steve Muckle <smuckle@codeaurora.org>
[joonwoop@codeaurora.org: fixed minor conflict in include/linux/tick.h]
Signed-off-by: Joonwoo Park <joonwoop@codeaurora.org>
Diffstat (limited to 'include/linux')
| -rw-r--r-- | include/linux/tick.h | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/include/linux/tick.h b/include/linux/tick.h index 37dc6fd909be..cf0dab43d6aa 100644 --- a/include/linux/tick.h +++ b/include/linux/tick.h @@ -27,6 +27,8 @@ static inline void tick_handover_do_timer(void) { } static inline void tick_cleanup_dead_cpu(int cpu) { } #endif /* !CONFIG_GENERIC_CLOCKEVENTS */ +extern u64 jiffy_to_sched_clock(u64 *now, u64 *jiffy_sched_clock); + #if defined(CONFIG_GENERIC_CLOCKEVENTS) && defined(CONFIG_SUSPEND) extern void tick_freeze(void); extern void tick_unfreeze(void); |