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ANDROID: mm: Add vendor hooks for __alloc_pages_slowpath

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To monitor the efficiency of memory relciaming in __alloc_pages_slowpath, add vendor hooks in each stages of __alloc_pages_slowpath including __alloc_pages_may_oom and __alloc_pages_direct_reclaim.

android_vh_mm_alloc_pages_direct_reclaim_enter()
android_vh_mm_alloc_pages_direct_reclaim_exit(unsigned long, int)
android_vh_mm_alloc_pages_may_oom_exit(struct oom_control *, unsigned long)

Bug: 301044280

Change-Id: Ic5b5f1c2ad31b16e7339f539fcf54659e9acaba7
Signed-off-by: John Hsu <john.hsu@mediatek.com>
This commit is contained in:
JohnHsu 2023-09-25 16:57:06 +08:00
parent 5c2855fbce
commit 0deb7bb73e
3 changed files with 19 additions and 1 deletions
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3
drivers/android/vendor_hooks.c
View File

@ -337,3 +337,6 @@ EXPORT_TRACEPOINT_SYMBOL_GPL(android_vh_binder_special_task);
EXPORT_TRACEPOINT_SYMBOL_GPL(android_vh_binder_free_buf);
EXPORT_TRACEPOINT_SYMBOL_GPL(android_vh_compaction_exit);
EXPORT_TRACEPOINT_SYMBOL_GPL(android_vh_compaction_try_to_compact_pages_exit);
EXPORT_TRACEPOINT_SYMBOL_GPL(android_vh_mm_alloc_pages_direct_reclaim_enter);
EXPORT_TRACEPOINT_SYMBOL_GPL(android_vh_mm_alloc_pages_direct_reclaim_exit);
EXPORT_TRACEPOINT_SYMBOL_GPL(android_vh_mm_alloc_pages_may_oom_exit);

10
include/trace/hooks/mm.h
View File

@ -141,6 +141,16 @@ DECLARE_HOOK(android_vh_look_around,
struct vm_area_struct *vma, int *referenced),
TP_ARGS(pvmw, folio, vma, referenced));
DECLARE_HOOK(android_vh_mm_alloc_pages_direct_reclaim_enter,
TP_PROTO(unsigned int order),
TP_ARGS(order));
DECLARE_HOOK(android_vh_mm_alloc_pages_direct_reclaim_exit,
TP_PROTO(unsigned long did_some_progress, int retry_times),
TP_ARGS(did_some_progress, retry_times));
struct oom_control;
DECLARE_HOOK(android_vh_mm_alloc_pages_may_oom_exit,
TP_PROTO(struct oom_control *oc, unsigned long did_some_progress),
TP_ARGS(oc, did_some_progress));
#endif /* _TRACE_HOOK_MM_H */
/* This part must be outside protection */

7
mm/page_alloc.c
View File

@ -4503,6 +4503,7 @@ __alloc_pages_may_oom(gfp_t gfp_mask, unsigned int order,
if (!mutex_trylock(&oom_lock)) {
*did_some_progress = 1;
schedule_timeout_uninterruptible(1);
trace_android_vh_mm_alloc_pages_may_oom_exit(&oc, *did_some_progress);
return NULL;
}
@ -4565,6 +4566,7 @@ __alloc_pages_may_oom(gfp_t gfp_mask, unsigned int order,
}
out:
mutex_unlock(&oom_lock);
trace_android_vh_mm_alloc_pages_may_oom_exit(&oc, *did_some_progress);
return page;
}
@ -4868,10 +4870,12 @@ __alloc_pages_direct_reclaim(gfp_t gfp_mask, unsigned int order,
unsigned int alloc_flags, const struct alloc_context *ac,
unsigned long *did_some_progress)
{
int retry_times = 0;
struct page *page = NULL;
unsigned long pflags;
bool drained = false;
trace_android_vh_mm_alloc_pages_direct_reclaim_enter(order);
psi_memstall_enter(&pflags);
*did_some_progress = __perform_reclaim(gfp_mask, order, ac);
if (unlikely(!(*did_some_progress)))
@ -4889,11 +4893,12 @@ __alloc_pages_direct_reclaim(gfp_t gfp_mask, unsigned int order,
unreserve_highatomic_pageblock(ac, false);
drain_all_pages(NULL);
drained = true;
++retry_times;
goto retry;
}
out:
psi_memstall_leave(&pflags);
trace_android_vh_mm_alloc_pages_direct_reclaim_exit(*did_some_progress, retry_times);
return page;
}