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ANDROID: sched: Add trace_android_rvh_set_user_nice_locked

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We will need vendor hook of set_user_nice with lock to avoid race
condition.

Bug: 300872872
Change-Id: I24fc1e13cc6578dcc418d956a5146ad29ff76a56
Signed-off-by: Rick Yiu <rickyiu@google.com>
This commit is contained in:
Rick Yiu
2023-11-21 07:18:24 +00:00
parent bd1e76c09b
commit 87344b2ab7
3 changed files with 9 additions and 0 deletions
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4
include/trace/hooks/sched.h
View File

@@ -85,6 +85,10 @@ DECLARE_RESTRICTED_HOOK(android_rvh_set_user_nice,
TP_PROTO(struct task_struct *p, long *nice, bool *allowed),
TP_ARGS(p, nice, allowed), 1);
DECLARE_RESTRICTED_HOOK(android_rvh_set_user_nice_locked,
TP_PROTO(struct task_struct *p, long *nice),
TP_ARGS(p, nice), 1);
DECLARE_RESTRICTED_HOOK(android_rvh_setscheduler,
TP_PROTO(struct task_struct *p),
TP_ARGS(p), 1);

4
kernel/sched/core.c
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@@ -7120,6 +7120,10 @@ void set_user_nice(struct task_struct *p, long nice)
rq = task_rq_lock(p, &rf);
update_rq_clock(rq);
trace_android_rvh_set_user_nice_locked(p, &nice);
if (task_nice(p) == nice)
goto out_unlock;
/*
* The RT priorities are set via sched_setscheduler(), but we still
* allow the 'normal' nice value to be set - but as expected

1
kernel/sched/vendor_hooks.c
View File

@@ -27,6 +27,7 @@ EXPORT_TRACEPOINT_SYMBOL_GPL(android_rvh_rto_next_cpu);
EXPORT_TRACEPOINT_SYMBOL_GPL(android_rvh_is_cpu_allowed);
EXPORT_TRACEPOINT_SYMBOL_GPL(android_rvh_get_nohz_timer_target);
EXPORT_TRACEPOINT_SYMBOL_GPL(android_rvh_set_user_nice);
EXPORT_TRACEPOINT_SYMBOL_GPL(android_rvh_set_user_nice_locked);
EXPORT_TRACEPOINT_SYMBOL_GPL(android_rvh_setscheduler);
EXPORT_TRACEPOINT_SYMBOL_GPL(android_rvh_find_busiest_group);
EXPORT_TRACEPOINT_SYMBOL_GPL(android_vh_dump_throttled_rt_tasks);