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ANDROID: vendor_hooks:vendor hook for __alloc_pages_slowpath.

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add vendor hook in __alloc_pages_slowpath ahead of
__alloc_pages_direct_reclaim and warn_alloc.

Bug: 243629905
Change-Id: Ieacc6cf79823c0bfacfdeec9afb55ed66f40d0b0
Signed-off-by: xiaofeng <xiaofeng5@xiaomi.com>
This commit is contained in:
xiaofeng
2022-08-24 19:34:06 +08:00
committed by Suren Baghdasaryan
parent 22c312bbde
commit 0312e9cd22
3 changed files with 21 additions and 1 deletions
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2
drivers/android/vendor_hooks.c
View File

@@ -451,3 +451,5 @@ EXPORT_TRACEPOINT_SYMBOL_GPL(android_vh_alloc_uid);
EXPORT_TRACEPOINT_SYMBOL_GPL(android_vh_free_user);
EXPORT_TRACEPOINT_SYMBOL_GPL(android_vh_modify_thermal_cpu_get_power);
EXPORT_TRACEPOINT_SYMBOL_GPL(android_vh_page_cache_forced_ra);
EXPORT_TRACEPOINT_SYMBOL_GPL(android_vh_alloc_pages_reclaim_bypass);
EXPORT_TRACEPOINT_SYMBOL_GPL(android_vh_alloc_pages_failure_bypass);

9
include/trace/hooks/mm.h
View File

@@ -121,7 +121,14 @@ DECLARE_HOOK(android_vh_mark_page_accessed,
DECLARE_HOOK(android_vh_page_cache_forced_ra,
TP_PROTO(struct readahead_control *ractl, unsigned long req_count, bool *do_forced_ra),
TP_ARGS(ractl, req_count, do_forced_ra));
DECLARE_HOOK(android_vh_alloc_pages_reclaim_bypass,
TP_PROTO(gfp_t gfp_mask, int order, int alloc_flags,
int migratetype, struct page **page),
TP_ARGS(gfp_mask, order, alloc_flags, migratetype, page));
DECLARE_HOOK(android_vh_alloc_pages_failure_bypass,
TP_PROTO(gfp_t gfp_mask, int order, int alloc_flags,
int migratetype, struct page **page),
TP_ARGS(gfp_mask, order, alloc_flags, migratetype, page));
#endif /* _TRACE_HOOK_MM_H */
/* This part must be outside protection */

11
mm/page_alloc.c
View File

@@ -5145,6 +5145,12 @@ retry:
if (current->flags & PF_MEMALLOC)
goto nopage;
trace_android_vh_alloc_pages_reclaim_bypass(gfp_mask, order,
alloc_flags, ac->migratetype, &page);
if (page)
goto got_pg;
/* Try direct reclaim and then allocating */
page = __alloc_pages_direct_reclaim(gfp_mask, order, alloc_flags, ac,
&did_some_progress);
@@ -5252,6 +5258,11 @@ nopage:
goto retry;
}
fail:
trace_android_vh_alloc_pages_failure_bypass(gfp_mask, order,
alloc_flags, ac->migratetype, &page);
if (page)
goto got_pg;
warn_alloc(gfp_mask, ac->nodemask,
"page allocation failure: order:%u", order);
got_pg: