From 94b540c38dd4b4e4c52c1ed3eedcef1aee4cd46e Mon Sep 17 00:00:00 2001 From: Dezhi Huang Date: Wed, 24 May 2023 16:28:55 +0800 Subject: [PATCH] ANDROID: mm: create vendor hooks for do_shrink_slab() The hook function: trace_android_vh_do_shrink_slab is added inside of the function do_shrink_slab() to changed the numbers of page to be reclaimed from kernel. Bug: 279793370 Change-Id: I7c0b955be97f841c69bc99a152b59ed9823707ed Signed-off-by: Dezhi Huang --- drivers/android/vendor_hooks.c | 1 + include/trace/hooks/vmscan.h | 3 +++ mm/vmscan.c | 1 + 3 files changed, 5 insertions(+) diff --git a/drivers/android/vendor_hooks.c b/drivers/android/vendor_hooks.c index 78a03f93e0fb..1af7dedd6a5a 100644 --- a/drivers/android/vendor_hooks.c +++ b/drivers/android/vendor_hooks.c @@ -244,6 +244,7 @@ EXPORT_TRACEPOINT_SYMBOL_GPL(android_vh_binder_trans); EXPORT_TRACEPOINT_SYMBOL_GPL(android_vh_mmap_region); EXPORT_TRACEPOINT_SYMBOL_GPL(android_vh_try_to_unmap_one); EXPORT_TRACEPOINT_SYMBOL_GPL(android_vh_shrink_slab_bypass); +EXPORT_TRACEPOINT_SYMBOL_GPL(android_vh_do_shrink_slab); EXPORT_TRACEPOINT_SYMBOL_GPL(android_vh_get_page_wmark); EXPORT_TRACEPOINT_SYMBOL_GPL(android_vh_page_add_new_anon_rmap); EXPORT_TRACEPOINT_SYMBOL_GPL(android_vh_psi_event); diff --git a/include/trace/hooks/vmscan.h b/include/trace/hooks/vmscan.h index 229a8d8f45c0..2044d922c65b 100644 --- a/include/trace/hooks/vmscan.h +++ b/include/trace/hooks/vmscan.h @@ -18,6 +18,9 @@ DECLARE_HOOK(android_vh_kswapd_per_node, DECLARE_HOOK(android_vh_shrink_slab_bypass, TP_PROTO(gfp_t gfp_mask, int nid, struct mem_cgroup *memcg, int priority, bool *bypass), TP_ARGS(gfp_mask, nid, memcg, priority, bypass)); +DECLARE_HOOK(android_vh_do_shrink_slab, + TP_PROTO(struct shrinker *shrinker, long *freeable), + TP_ARGS(shrinker, freeable)); #endif /* _TRACE_HOOK_VMSCAN_H */ /* This part must be outside protection */ #include diff --git a/mm/vmscan.c b/mm/vmscan.c index be951f3d0bb9..8dc51c2bdb32 100644 --- a/mm/vmscan.c +++ b/mm/vmscan.c @@ -800,6 +800,7 @@ static unsigned long do_shrink_slab(struct shrink_control *shrinkctl, long scanned = 0, next_deferred; freeable = shrinker->count_objects(shrinker, shrinkctl); + trace_android_vh_do_shrink_slab(shrinker, &freeable); if (freeable == 0 || freeable == SHRINK_EMPTY) return freeable;