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ANDROID: mm: add vendor hook to trace shrink_node

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This is to adjust parameters between different memcgs to achieve
more accurate memory reclamation.

Bug: 373540729
Change-Id: Ifb97a144c057555c5f9181f357fa146f9509be3e
Signed-off-by: Jianan Huang <huangjianan@xiaomi.com>
(cherry picked from commit 9d6f981a89e6e289f114270e2f1738b2b6fdd2ab)
This commit is contained in:
Jianan Huang
2024-10-15 14:47:56 +08:00
committed by Todd Kjos
parent f2a18f1865
commit ff55f3e7ea
3 changed files with 5 additions and 0 deletions
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1
drivers/android/vendor_hooks.c
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@@ -440,6 +440,7 @@ EXPORT_TRACEPOINT_SYMBOL_GPL(android_vh_queue_request_and_unlock);
EXPORT_TRACEPOINT_SYMBOL_GPL(android_vh_fuse_request_end);
EXPORT_TRACEPOINT_SYMBOL_GPL(android_vh_rwsem_read_trylock_failed);
EXPORT_TRACEPOINT_SYMBOL_GPL(android_vh_should_memcg_bypass);
EXPORT_TRACEPOINT_SYMBOL_GPL(android_vh_shrink_node);
EXPORT_TRACEPOINT_SYMBOL_GPL(android_vh_shmem_swapin_folio);
EXPORT_TRACEPOINT_SYMBOL_GPL(android_vh_do_wp_page);
EXPORT_TRACEPOINT_SYMBOL_GPL(android_vh_do_swap_page);

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

@@ -86,6 +86,9 @@ DECLARE_HOOK(android_vh_page_referenced_check_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_shrink_node,
TP_PROTO(pg_data_t *pgdat, struct mem_cgroup *memcg),
TP_ARGS(pgdat, memcg));
DECLARE_HOOK(android_vh_should_memcg_bypass,
TP_PROTO(struct mem_cgroup *memcg, int priority, bool *bypass),
TP_ARGS(memcg, priority, bypass));

1
mm/vmscan.c
View File

@@ -6606,6 +6606,7 @@ static void shrink_node(pg_data_t *pgdat, struct scan_control *sc)
struct lruvec *target_lruvec;
bool reclaimable = false;
trace_android_vh_shrink_node(pgdat, sc->target_mem_cgroup);
if (lru_gen_enabled() && global_reclaim(sc)) {
lru_gen_shrink_node(pgdat, sc);
return;