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ANDROID: vendor_hooks: Add hook in shrink_node_memcgs

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Add vendor hook in shrink_node_memcgs to adjust whether
to skip memory reclamation of memcg.

Bug: 226482420
Signed-off-by: Liujie Xie <xieliujie@oppo.com>
Change-Id: I925856353e63c5a821027de4f8476c833e21b982
This commit is contained in:
Liujie Xie 2022-03-24 10:17:40 +08:00 committed by Suren Baghdasaryan
parent a3f112353c
commit 95380146ce
3 changed files with 9 additions and 1 deletions
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1
drivers/android/vendor_hooks.c
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@ -393,3 +393,4 @@ EXPORT_TRACEPOINT_SYMBOL_GPL(android_vh_binder_thread_release);
EXPORT_TRACEPOINT_SYMBOL_GPL(android_vh_binder_has_work_ilocked);
EXPORT_TRACEPOINT_SYMBOL_GPL(android_vh_binder_read_done);
EXPORT_TRACEPOINT_SYMBOL_GPL(android_vh_handle_tlb_conf);
EXPORT_TRACEPOINT_SYMBOL_GPL(android_vh_shrink_node_memcgs);

4
include/trace/hooks/vmscan.h
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@ -28,7 +28,9 @@ DECLARE_RESTRICTED_HOOK(android_rvh_set_balance_anon_file_reclaim,
DECLARE_HOOK(android_vh_page_referenced_check_bypass,
TP_PROTO(struct page *page, unsigned long nr_to_scan, int lru, bool *bypass),
TP_ARGS(page, nr_to_scan, lru, bypass));
DECLARE_HOOK(android_vh_shrink_node_memcgs,
TP_PROTO(struct mem_cgroup *memcg, bool *skip),
TP_ARGS(memcg, skip));
#endif /* _TRACE_HOOK_VMSCAN_H */
/* This part must be outside protection */
#include <trace/define_trace.h>

5
mm/vmscan.c
View File

@ -2699,6 +2699,7 @@ static void shrink_node_memcgs(pg_data_t *pgdat, struct scan_control *sc)
struct lruvec *lruvec = mem_cgroup_lruvec(memcg, pgdat);
unsigned long reclaimed;
unsigned long scanned;
bool skip = false;
/*
* This loop can become CPU-bound when target memcgs
@ -2708,6 +2709,10 @@ static void shrink_node_memcgs(pg_data_t *pgdat, struct scan_control *sc)
*/
cond_resched();
trace_android_vh_shrink_node_memcgs(memcg, &skip);
if (skip)
continue;
mem_cgroup_calculate_protection(target_memcg, memcg);
if (mem_cgroup_below_min(memcg)) {