diff options
| author | Vincent Guittot <vincent.guittot@linaro.org> | 2023-02-01 15:36:28 +0100 |
|---|---|---|
| committer | Peter Zijlstra <peterz@infradead.org> | 2023-02-11 11:18:09 +0100 |
| commit | a2e90611b9f425adbbfcdaa5b5e49958ddf6f61b (patch) | |
| tree | f9274d67b2d1ef68b9c972176386ff225d982105 /kernel/sched/sched.h | |
| parent | e5ed0550c04c5469ecdc1634d8aa18c8609590f0 (diff) | |
sched/fair: Remove capacity inversion detection
Remove the capacity inversion detection which is now handled by
util_fits_cpu() returning -1 when we need to continue to look for a
potential CPU with better performance.
This ends up almost reverting patches below except for some comments:
commit da07d2f9c153 ("sched/fair: Fixes for capacity inversion detection")
commit aa69c36f31aa ("sched/fair: Consider capacity inversion in util_fits_cpu()")
commit 44c7b80bffc3 ("sched/fair: Detect capacity inversion")
Signed-off-by: Vincent Guittot <vincent.guittot@linaro.org>
Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Link: https://lore.kernel.org/r/20230201143628.270912-3-vincent.guittot@linaro.org
Diffstat (limited to 'kernel/sched/sched.h')
| -rw-r--r-- | kernel/sched/sched.h | 19 |
1 files changed, 0 insertions, 19 deletions
diff --git a/kernel/sched/sched.h b/kernel/sched/sched.h index 1072502976df..3e8df6d31c1e 100644 --- a/kernel/sched/sched.h +++ b/kernel/sched/sched.h @@ -1044,7 +1044,6 @@ struct rq { unsigned long cpu_capacity; unsigned long cpu_capacity_orig; - unsigned long cpu_capacity_inverted; struct balance_callback *balance_callback; @@ -2899,24 +2898,6 @@ static inline unsigned long capacity_orig_of(int cpu) return cpu_rq(cpu)->cpu_capacity_orig; } -/* - * Returns inverted capacity if the CPU is in capacity inversion state. - * 0 otherwise. - * - * Capacity inversion detection only considers thermal impact where actual - * performance points (OPPs) gets dropped. - * - * Capacity inversion state happens when another performance domain that has - * equal or lower capacity_orig_of() becomes effectively larger than the perf - * domain this CPU belongs to due to thermal pressure throttling it hard. - * - * See comment in update_cpu_capacity(). - */ -static inline unsigned long cpu_in_capacity_inversion(int cpu) -{ - return cpu_rq(cpu)->cpu_capacity_inverted; -} - /** * enum cpu_util_type - CPU utilization type * @FREQUENCY_UTIL: Utilization used to select frequency |