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platform_kernel-5.15
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ANDROID: vendor_hooks: tune reclaim swappiness or scan type 

Add hooks for reclaim

Bug: 185438290
Change-Id: Ib9eec302b1df4da7e98c77b94541af28c34a8613
Signed-off-by: xiaofeng <xiaofeng5@xiaomi.com>
(cherry picked from commit 35dafe72dd7f7802f941f441f32b9d85efce8803)
This commit is contained in:
xiaofeng 2021-04-15 15:02:58 +08:00 committed by Todd Kjos
parent 113b63538c
commit 4d242c3433
3 changed files with 10 additions and 0 deletions
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2
drivers/android/vendor_hooks.c
View File

@ -330,3 +330,5 @@ EXPORT_TRACEPOINT_SYMBOL_GPL(android_rvh_tcp_recvmsg);
EXPORT_TRACEPOINT_SYMBOL_GPL(android_rvh_udp_sendmsg);
EXPORT_TRACEPOINT_SYMBOL_GPL(android_rvh_udp_recvmsg);
EXPORT_TRACEPOINT_SYMBOL_GPL(android_rvh_tcp_recvmsg_stat);
EXPORT_TRACEPOINT_SYMBOL_GPL(android_vh_tune_scan_type);
EXPORT_TRACEPOINT_SYMBOL_GPL(android_vh_tune_swappiness);

6
include/trace/hooks/vmscan.h
View File

@ -22,6 +22,12 @@ DECLARE_HOOK(android_vh_page_referenced_check_bypass,
DECLARE_HOOK(android_vh_shrink_node_memcgs,
TP_PROTO(struct mem_cgroup *memcg, bool *skip),
TP_ARGS(memcg, skip));
DECLARE_HOOK(android_vh_tune_scan_type,
TP_PROTO(char *scan_type),
TP_ARGS(scan_type));
DECLARE_HOOK(android_vh_tune_swappiness,
TP_PROTO(int *swappiness),
TP_ARGS(swappiness));
#endif /* _TRACE_HOOK_VMSCAN_H */
/* This part must be outside protection */
#include <trace/define_trace.h>

2
mm/vmscan.c
View File

@ -2724,6 +2724,7 @@ static void get_scan_count(struct lruvec *lruvec, struct scan_control *sc,
goto out;
}
trace_android_vh_tune_swappiness(&swappiness);
/*
* Global reclaim will swap to prevent OOM even with no
* swappiness, but memcg users want to use this knob to
@ -2798,6 +2799,7 @@ static void get_scan_count(struct lruvec *lruvec, struct scan_control *sc,
fraction[1] = fp;
denominator = ap + fp;
out:
trace_android_vh_tune_scan_type((char *)(&scan_balance));
for_each_evictable_lru(lru) {
int file = is_file_lru(lru);
unsigned long lruvec_size;