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ANDROID: vendor_hooks: Skip pages with high memory pressure in shrink_active_list

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The android_vh_folio_referenced_check_bypass hook reverse-maps and
skips pages with high memory pressure in shrink_active_list,
preferring to recycle them. This helps reduce memory pressure and
improve system performance under high load.

Bug: 404067669

Change-Id: Ic10edcef9761df774d6cf18544e7c044bf78d3ed
Signed-off-by: Marcus Ma <maminghui5@xiaomi.corp-partner.google.com>
This commit is contained in:
Marcus Ma
2025-03-19 10:02:16 +08:00
committed by Treehugger Robot
parent da6a42c111
commit 2f4537ba6c
3 changed files with 6 additions and 0 deletions
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1
drivers/android/vendor_hooks.c
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@@ -474,3 +474,4 @@ EXPORT_TRACEPOINT_SYMBOL_GPL(android_vh_mmc_gpio_cd_irqt);
EXPORT_TRACEPOINT_SYMBOL_GPL(android_trigger_vendor_lmk_kill); EXPORT_TRACEPOINT_SYMBOL_GPL(android_trigger_vendor_lmk_kill);
EXPORT_TRACEPOINT_SYMBOL_GPL(android_vh_filemap_map_pages_range); EXPORT_TRACEPOINT_SYMBOL_GPL(android_vh_filemap_map_pages_range);
EXPORT_TRACEPOINT_SYMBOL_GPL(android_vh_vprintk_store); EXPORT_TRACEPOINT_SYMBOL_GPL(android_vh_vprintk_store);
EXPORT_TRACEPOINT_SYMBOL_GPL(android_vh_folio_referenced_check_bypass);

3
include/trace/hooks/vmscan.h
View File

@@ -79,6 +79,9 @@ DECLARE_HOOK(android_vh_do_folio_trylock,
DECLARE_HOOK(android_vh_page_referenced_check_bypass, DECLARE_HOOK(android_vh_page_referenced_check_bypass,
TP_PROTO(struct folio *folio, unsigned long nr_to_scan, int lru, bool *bypass), TP_PROTO(struct folio *folio, unsigned long nr_to_scan, int lru, bool *bypass),
TP_ARGS(folio, nr_to_scan, lru, bypass)); TP_ARGS(folio, nr_to_scan, lru, bypass));
DECLARE_HOOK(android_vh_folio_referenced_check_bypass,
TP_PROTO(struct folio *folio, s8 priority, unsigned long nr_to_scan, int lru, bool *bypass),
TP_ARGS(folio, priority, nr_to_scan, lru, bypass));
DECLARE_HOOK(android_vh_should_memcg_bypass, DECLARE_HOOK(android_vh_should_memcg_bypass,
TP_PROTO(struct mem_cgroup *memcg, int priority, bool *bypass), TP_PROTO(struct mem_cgroup *memcg, int priority, bool *bypass),
TP_ARGS(memcg, priority, bypass)); TP_ARGS(memcg, priority, bypass));

2
mm/vmscan.c
View File

@@ -2709,6 +2709,8 @@ static void shrink_active_list(unsigned long nr_to_scan,
} }
trace_android_vh_page_referenced_check_bypass(folio, nr_to_scan, lru, &bypass); trace_android_vh_page_referenced_check_bypass(folio, nr_to_scan, lru, &bypass);
trace_android_vh_folio_referenced_check_bypass(folio, sc->priority,
nr_to_scan, lru, &bypass);
if (bypass) if (bypass)
goto skip_folio_referenced; goto skip_folio_referenced;
trace_android_vh_folio_trylock_set(folio); trace_android_vh_folio_trylock_set(folio);