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ANDROID: vendor_hook: Add hook in inactive_is_low()

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Provide a vendor hook android_vh_inactive_is_low to replace the
calculation process of inactive_ratio.
The alternative calculation algorithm takes into account the
difference between file pages and anonymous pages.

Bug: 234214858
Signed-off-by: Bing Han <bing.han@transsion.com>
Change-Id: I6cf9c47fbc440852cc36e04f49d644146eb2c6af
This commit is contained in:
Bing Han 2022-05-30 14:06:14 +08:00 committed by Treehugger Robot
parent bb9c8f5256
commit 6b04959511
3 changed files with 11 additions and 0 deletions
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1
drivers/android/vendor_hooks.c
View File

@ -407,3 +407,4 @@ EXPORT_TRACEPOINT_SYMBOL_GPL(android_vh_handle_tlb_conf);
EXPORT_TRACEPOINT_SYMBOL_GPL(android_vh_shrink_node_memcgs);
EXPORT_TRACEPOINT_SYMBOL_GPL(android_vh_ra_tuning_max_page);
EXPORT_TRACEPOINT_SYMBOL_GPL(android_vh_tune_memcg_scan_type);
EXPORT_TRACEPOINT_SYMBOL_GPL(android_vh_inactive_is_low);

4
include/trace/hooks/vmscan.h
View File

@ -34,6 +34,10 @@ DECLARE_HOOK(android_vh_shrink_node_memcgs,
DECLARE_HOOK(android_vh_tune_memcg_scan_type,
TP_PROTO(struct mem_cgroup *memcg, char *scan_type),
TP_ARGS(memcg, scan_type));
DECLARE_HOOK(android_vh_inactive_is_low,
TP_PROTO(unsigned long gb, unsigned long *inactive_ratio,
enum lru_list inactive_lru, bool *skip),
TP_ARGS(gb, inactive_ratio, inactive_lru, skip));
#endif /* _TRACE_HOOK_VMSCAN_H */
/* This part must be outside protection */
#include <trace/define_trace.h>

6
mm/vmscan.c
View File

@ -2270,11 +2270,16 @@ static bool inactive_is_low(struct lruvec *lruvec, enum lru_list inactive_lru)
unsigned long inactive, active;
unsigned long inactive_ratio;
unsigned long gb;
bool skip = false;
inactive = lruvec_page_state(lruvec, NR_LRU_BASE + inactive_lru);
active = lruvec_page_state(lruvec, NR_LRU_BASE + active_lru);
gb = (inactive + active) >> (30 - PAGE_SHIFT);
trace_android_vh_inactive_is_low(gb, &inactive_ratio, inactive_lru, &skip);
if (skip)
goto out;
if (gb)
inactive_ratio = int_sqrt(10 * gb);
else
@ -2282,6 +2287,7 @@ static bool inactive_is_low(struct lruvec *lruvec, enum lru_list inactive_lru)
trace_android_vh_tune_inactive_ratio(&inactive_ratio, is_file_lru(inactive_lru));
out:
return inactive * inactive_ratio < active;
}