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ANDROID: mm: create vendor hooks for do_shrink_slab()

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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 <huangdezhi@hihonor.com>
This commit is contained in:
Dezhi Huang 2023-05-24 16:28:55 +08:00 committed by Suren Baghdasaryan
parent da4e60efe1
commit 94b540c38d
3 changed files with 5 additions and 0 deletions
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1
drivers/android/vendor_hooks.c
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@ -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);

3
include/trace/hooks/vmscan.h
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@ -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 <trace/define_trace.h>

1
mm/vmscan.c
View File

@ -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;