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ANDROID: vendor_hooks: bypass shrink slab

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Add hooks for bypass shrink slab.

Bug: 185951972
(cherry picked from commit 396a6adfd3)

Change-Id: I343e02ae5cd6d076d525d0e4bfc09ecdfeda1d7b
Signed-off-by: wudean <dean.wu@vivo.com>
This commit is contained in:
wudean
2021-04-27 17:40:41 +08:00
committed by Suren Baghdasaryan
parent e53e6edb46
commit 348b1456e9
3 changed files with 9 additions and 0 deletions
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1
drivers/android/vendor_hooks.c
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@@ -221,6 +221,7 @@ EXPORT_TRACEPOINT_SYMBOL_GPL(android_vh_drain_all_pages_bypass);
EXPORT_TRACEPOINT_SYMBOL_GPL(android_vh_cma_drain_all_pages_bypass);
EXPORT_TRACEPOINT_SYMBOL_GPL(android_vh_pcplist_add_cma_pages_bypass);
EXPORT_TRACEPOINT_SYMBOL_GPL(android_vh_irqtime_account_process_tick);
EXPORT_TRACEPOINT_SYMBOL_GPL(android_vh_shrink_slab_bypass);
EXPORT_TRACEPOINT_SYMBOL_GPL(android_vh_free_task);
EXPORT_TRACEPOINT_SYMBOL_GPL(android_vh_dup_task_struct);
EXPORT_TRACEPOINT_SYMBOL_GPL(android_rvh_after_enqueue_task);

3
include/trace/hooks/vmscan.h
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@@ -28,6 +28,9 @@ DECLARE_HOOK(android_vh_tune_scan_type,
DECLARE_HOOK(android_vh_tune_swappiness,
TP_PROTO(int *swappiness),
TP_ARGS(swappiness));
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));
#endif /* _TRACE_HOOK_VMSCAN_H */
/* This part must be outside protection */
#include <trace/define_trace.h>

5
mm/vmscan.c
View File

@@ -908,6 +908,11 @@ unsigned long shrink_slab(gfp_t gfp_mask, int nid,
{
unsigned long ret, freed = 0;
struct shrinker *shrinker;
bool bypass = false;
trace_android_vh_shrink_slab_bypass(gfp_mask, nid, memcg, priority, &bypass);
if (bypass)
return 0;
/*
* The root memcg might be allocated even though memcg is disabled