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ANDROID: Add new hook to enable overriding uclamp_validate()

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We want to add more special values, specifically for uclamp_max so that
it can be set automatically to the most efficient value based on the
core it's running on.


Bug: 344826816
Bug: 297343949
Bug: 283761535
Signed-off-by: Qais Yousef <qyousef@google.com>
Change-Id: I57343c4544f6cac621c855cbb94de0b8d80c51fa
(cherry picked from commit 57629741518b30501e7a653bb9ca05b929550651)
[Remove user arg from uclamp_validate as it no longer part of the
function. Trivial conflict in vendor_hooks.c due to code ordering.]
Signed-off-by: Qais Yousef <qyousef@google.com>
This commit is contained in:
Qais Yousef
2023-05-11 15:34:13 +00:00
committed by Treehugger Robot
parent 390c2b429d
commit 124897124a
3 changed files with 12 additions and 0 deletions
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5
include/trace/hooks/sched.h
View File

@@ -322,6 +322,11 @@ DECLARE_HOOK(android_vh_setscheduler_uclamp,
TP_PROTO(struct task_struct *tsk, int clamp_id, unsigned int value),
TP_ARGS(tsk, clamp_id, value));
DECLARE_HOOK(android_vh_uclamp_validate,
TP_PROTO(struct task_struct *p, const struct sched_attr *attr,
int *ret, bool *done),
TP_ARGS(p, attr, ret, done));
DECLARE_HOOK(android_vh_update_topology_flags_workfn,
TP_PROTO(void *unused),
TP_ARGS(unused));

6
kernel/sched/syscalls.c
View File

@@ -358,6 +358,12 @@ static int uclamp_validate(struct task_struct *p,
{
int util_min = p->uclamp_req[UCLAMP_MIN].value;
int util_max = p->uclamp_req[UCLAMP_MAX].value;
bool done = false;
int ret = 0;
trace_android_vh_uclamp_validate(p, attr, &ret, &done);
if (done)
return ret;
if (attr->sched_flags & SCHED_FLAG_UTIL_CLAMP_MIN) {
util_min = attr->sched_util_min;

1
kernel/sched/vendor_hooks.c
View File

@@ -131,4 +131,5 @@ EXPORT_TRACEPOINT_SYMBOL_GPL(android_vh_prio_restore);
EXPORT_TRACEPOINT_SYMBOL_GPL(android_rvh_update_rt_rq_load_avg);
EXPORT_TRACEPOINT_SYMBOL_GPL(android_vh_set_sugov_sched_attr);
EXPORT_TRACEPOINT_SYMBOL_GPL(android_rvh_set_iowait);
EXPORT_TRACEPOINT_SYMBOL_GPL(android_vh_uclamp_validate);