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ANDROID: sched: Add vendor hook for update_load_sum

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vendor may have the need to modify update_load_sum function

Bug: 181105055
Change-Id: I35964977a4b8917c62773d48a37340f880774e38
Signed-off-by: Chungkai Mei <chungkai@google.com>
(cherry picked from commit 984523c368423410bf53ca4c68402897d160c5dd)
This commit is contained in:
Chungkai Mei 2023-11-02 05:31:05 +00:00 committed by Todd Kjos
parent eba89bbb6f
commit 0d97bca80a
3 changed files with 10 additions and 0 deletions
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5
include/trace/hooks/sched.h
View File

@ -419,6 +419,11 @@ DECLARE_RESTRICTED_HOOK(android_rvh_update_load_avg,
TP_PROTO(u64 now, struct cfs_rq *cfs_rq, struct sched_entity *se),
TP_ARGS(now, cfs_rq, se), 1);
DECLARE_RESTRICTED_HOOK(android_rvh_update_load_sum,
TP_PROTO(struct sched_avg *sa, u64 *delta, unsigned int *sched_pelt_lshift),
TP_ARGS(sa, delta, sched_pelt_lshift), 1);
DECLARE_RESTRICTED_HOOK(android_rvh_remove_entity_load_avg,
TP_PROTO(struct cfs_rq *cfs_rq, struct sched_entity *se),
TP_ARGS(cfs_rq, se), 1);

4
kernel/sched/pelt.c
View File

@ -24,6 +24,8 @@
* Author: Vincent Guittot <vincent.guittot@linaro.org>
*/
#include <trace/hooks/sched.h>
/*
* Approximate:
* val * y^n, where y^32 ~= 0.5 (~1 scheduling period)
@ -202,6 +204,8 @@ ___update_load_sum(u64 now, struct sched_avg *sa,
sa->last_update_time += delta << 10;
trace_android_rvh_update_load_sum(sa, &delta, &sched_pelt_lshift);
/*
* running is a subset of runnable (weight) so running can't be set if
* runnable is clear. But there are some corner cases where the current

1
kernel/sched/vendor_hooks.c
View File

@ -105,6 +105,7 @@ EXPORT_TRACEPOINT_SYMBOL_GPL(android_vh_set_sugov_sched_attr);
EXPORT_TRACEPOINT_SYMBOL_GPL(android_rvh_set_iowait);
EXPORT_TRACEPOINT_SYMBOL_GPL(android_rvh_attach_entity_load_avg);
EXPORT_TRACEPOINT_SYMBOL_GPL(android_rvh_detach_entity_load_avg);
EXPORT_TRACEPOINT_SYMBOL_GPL(android_rvh_update_load_sum);
EXPORT_TRACEPOINT_SYMBOL_GPL(android_rvh_update_load_avg);
EXPORT_TRACEPOINT_SYMBOL_GPL(android_rvh_remove_entity_load_avg);
EXPORT_TRACEPOINT_SYMBOL_GPL(android_rvh_update_blocked_fair);