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ANDROID: sched: Add rvh for cpu controller cgroup can attach

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Add a restricted vendor hook to check whether a set of tasks can
move to other cgorup.

Bug: 175808144

Signed-off-by: Choonghoon Park <choong.park@samsung.com>
Change-Id: If7bac83e0d2d1069b1436331989c3926645eab19
This commit is contained in:
Choonghoon Park
2020-12-16 13:31:34 +09:00
committed by Todd Kjos
parent 40ec0132b8
commit d3092d8afd
3 changed files with 9 additions and 0 deletions
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1
drivers/android/vendor_hooks.c
View File

@@ -113,3 +113,4 @@ EXPORT_TRACEPOINT_SYMBOL_GPL(android_rvh_place_entity);
EXPORT_TRACEPOINT_SYMBOL_GPL(android_rvh_update_cpu_capacity);
EXPORT_TRACEPOINT_SYMBOL_GPL(android_rvh_update_misfit_status);
EXPORT_TRACEPOINT_SYMBOL_GPL(android_rvh_cpu_cgroup_attach);
EXPORT_TRACEPOINT_SYMBOL_GPL(android_rvh_cpu_cgroup_can_attach);

5
include/trace/hooks/sched.h
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@@ -194,6 +194,10 @@ struct cgroup_taskset;
DECLARE_RESTRICTED_HOOK(android_rvh_cpu_cgroup_attach,
TP_PROTO(struct cgroup_taskset *tset),
TP_ARGS(tset), 1);
DECLARE_RESTRICTED_HOOK(android_rvh_cpu_cgroup_can_attach,
TP_PROTO(struct cgroup_taskset *tset, int *retval),
TP_ARGS(tset, retval), 1);
#else
#define trace_android_rvh_select_task_rq_fair(p, prev_cpu, sd_flag, wake_flags, new_cpu)
#define trace_android_rvh_select_task_rq_rt(p, prev_cpu, sd_flag, wake_flags, new_cpu)
@@ -238,6 +242,7 @@ DECLARE_RESTRICTED_HOOK(android_rvh_cpu_cgroup_attach,
#define trace_android_rvh_update_cpu_capacity(cpu, capacity)
#define trace_android_rvh_update_misfit_status(p, rq, need_update)
#define trace_android_rvh_cpu_cgroup_attach(tset)
#define trace_android_rvh_cpu_cgroup_can_attach(tset, retval)
#endif
#endif /* _TRACE_HOOK_SCHED_H */
/* This part must be outside protection */

3
kernel/sched/core.c
View File

@@ -7849,6 +7849,9 @@ static int cpu_cgroup_can_attach(struct cgroup_taskset *tset)
if (ret)
break;
}
trace_android_rvh_cpu_cgroup_can_attach(tset, &ret);
return ret;
}