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Revert "Revert "ANDROID: vendor_hooks:vendor hook for mmput""

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This reverts commit 501063ce66.

Reason for revert: The vendor hook is actually needed by a partner

Bug: 238821038
Signed-off-by: Suren Baghdasaryan <surenb@google.com>
Change-Id: I1c19add348792967975369a10ec9cb41fa268236
This commit is contained in:
Suren Baghdasaryan
2022-12-14 22:08:04 +00:00
parent a43cd1f2bb
commit f677efbea1
3 changed files with 8 additions and 1 deletions
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1
drivers/android/vendor_hooks.c
View File

@@ -464,6 +464,7 @@ EXPORT_TRACEPOINT_SYMBOL_GPL(android_rvh_alloc_si);
EXPORT_TRACEPOINT_SYMBOL_GPL(android_vh_alloc_si);
EXPORT_TRACEPOINT_SYMBOL_GPL(android_vh_free_pages);
EXPORT_TRACEPOINT_SYMBOL_GPL(android_vh_set_shmem_page_flag);
EXPORT_TRACEPOINT_SYMBOL_GPL(android_vh_mmput);
EXPORT_TRACEPOINT_SYMBOL_GPL(android_vh_sched_pelt_multiplier);
EXPORT_TRACEPOINT_SYMBOL_GPL(android_vh_alloc_pages_reclaim_bypass);
EXPORT_TRACEPOINT_SYMBOL_GPL(android_vh_alloc_pages_failure_bypass);

4
include/trace/hooks/sched.h
View File

@@ -391,6 +391,10 @@ 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_mmput,
TP_PROTO(void *unused),
TP_ARGS(unused));
DECLARE_HOOK(android_vh_sched_pelt_multiplier,
TP_PROTO(unsigned int old, unsigned int cur, int *ret),
TP_ARGS(old, cur, ret));

4
kernel/fork.c
View File

@@ -1150,8 +1150,10 @@ 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(NULL);
__mmput(mm);
}
}
EXPORT_SYMBOL_GPL(mmput);