diff options
| author | Joel Fernandes <joelaf@google.com> | 2017-09-11 17:10:37 -0700 |
|---|---|---|
| committer | Joel Fernandes <joelaf@google.com> | 2018-02-01 11:19:48 -0800 |
| commit | a81d32264721fcb29e54d981fe17519cef600d78 (patch) | |
| tree | fe5cef4df8d34572f68ede0d7ad73c4fead84cae /kernel/sched/sched.h | |
| parent | fe09418d6f88b55920c576166b6e6a5ad456920f (diff) | |
ANDROID: sched/rt: schedtune: Add boost retention to RT
Boosted RT tasks can be deboosted quickly, this makes boost usless
for RT tasks and causes lots of glitching. Use timers to prevent
de-boost too soon and wait for long enough such that next enqueue
happens after a threshold.
While this can be solved in the governor, there are following
advantages:
- The approach used is governor-independent
- Reduces boost group lock contention for frequently sleepers/wakers
Note:
Fixed build breakage due to schedfreq dependency which isn't used
for RT anymore.
Bug: 30210506
Change-Id: I428a2695cac06cc3458cdde0dea72315e4e66c00
Signed-off-by: Joel Fernandes <joelaf@google.com>
Diffstat (limited to 'kernel/sched/sched.h')
| -rw-r--r-- | kernel/sched/sched.h | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/kernel/sched/sched.h b/kernel/sched/sched.h index 3db67eb07bdd..b9ba3279f095 100644 --- a/kernel/sched/sched.h +++ b/kernel/sched/sched.h @@ -1408,6 +1408,7 @@ extern void resched_cpu(int cpu); extern struct rt_bandwidth def_rt_bandwidth; extern void init_rt_bandwidth(struct rt_bandwidth *rt_b, u64 period, u64 runtime); +extern void init_rt_schedtune_timer(struct sched_rt_entity *rt_se); extern struct dl_bandwidth def_dl_bandwidth; extern void init_dl_bandwidth(struct dl_bandwidth *dl_b, u64 period, u64 runtime); |