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ANDROID: vendor_hooks:vendor hook for mmput

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add vendor hook in mmput while mm_users decreased to 0.

Bug: 238821038
Change-Id: I42a717cbeeb3176bac14b4b2391fdb2366c972d3
Signed-off-by: xiaofeng <xiaofeng5@xiaomi.com>
This commit is contained in:
xiaofeng
2022-07-13 10:23:51 +08:00
committed by Suren Baghdasaryan
parent 8d9c81d3ca
commit 2a5729e149
3 changed files with 7 additions and 1 deletions
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include/trace/hooks/sched.h
+3
View File
@@ -476,6 +476,9 @@ DECLARE_RESTRICTED_HOOK(android_rvh_dequeue_entity_delayed,
DECLARE_HOOK(android_vh_tick_nohz_idle_stop_tick,
TP_PROTO(void *unused),
TP_ARGS(unused));
DECLARE_HOOK(android_vh_mmput,
TP_PROTO(struct mm_struct *mm),
TP_ARGS(mm));
/* macro versions of hooks are no longer required */
#endif /* _TRACE_HOOK_SCHED_H */
kernel/fork.c
+3 -1
View File
@@ -1366,8 +1366,10 @@ void mmput(struct mm_struct *mm)
{
might_sleep();
if (atomic_dec_and_test(&mm->mm_users))
if (atomic_dec_and_test(&mm->mm_users)) {
trace_android_vh_mmput(mm);
__mmput(mm);
}
}
EXPORT_SYMBOL_GPL(mmput);
kernel/sched/vendor_hooks.c
+1
View File
@@ -124,3 +124,4 @@ EXPORT_TRACEPOINT_SYMBOL_GPL(android_vh_cpu_cgroup_css_alloc_early);
EXPORT_TRACEPOINT_SYMBOL_GPL(android_vh_cpu_cgroup_css_alloc);
EXPORT_TRACEPOINT_SYMBOL_GPL(android_vh_cpu_cgroup_css_free);
EXPORT_TRACEPOINT_SYMBOL_GPL(android_rvh_dequeue_entity_delayed);
EXPORT_TRACEPOINT_SYMBOL_GPL(android_vh_mmput);