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ANDROID: vendor_hooks: Add hooks for shrink_active_list

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Provide a vendor hook to allow page_referenced to be skipped
during shrink_active_list to avoid heavy cpuloading caused by
it.

Bug: 220878851
Bug: 234405962
Signed-off-by: Liujie Xie <xieliujie@oppo.com>
Signed-off-by: Peifeng Li <lipeifeng@oppo.com>
Change-Id: Ie0e369f8f8739fea59a95470af20ab0e976869d1
This commit is contained in:
Liujie Xie
2022-02-23 10:32:01 +08:00
committed by Carlos Llamas
parent 031e91e83d
commit 6f98ceb358
3 changed files with 11 additions and 1 deletions
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1
drivers/android/vendor_hooks.c
View File

@@ -209,6 +209,7 @@ EXPORT_TRACEPOINT_SYMBOL_GPL(android_rvh_check_preempt_wakeup);
EXPORT_TRACEPOINT_SYMBOL_GPL(android_rvh_cpufreq_transition);
EXPORT_TRACEPOINT_SYMBOL_GPL(android_rvh_set_balance_anon_file_reclaim);
EXPORT_TRACEPOINT_SYMBOL_GPL(android_rvh_show_max_freq);
EXPORT_TRACEPOINT_SYMBOL_GPL(android_vh_page_referenced_check_bypass);
EXPORT_TRACEPOINT_SYMBOL_GPL(android_vh_free_task);
EXPORT_TRACEPOINT_SYMBOL_GPL(android_rvh_after_enqueue_task);
EXPORT_TRACEPOINT_SYMBOL_GPL(android_rvh_after_dequeue_task);

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

@@ -15,6 +15,10 @@ DECLARE_RESTRICTED_HOOK(android_rvh_set_balance_anon_file_reclaim,
DECLARE_HOOK(android_vh_kswapd_per_node,
TP_PROTO(int nid, bool *skip, bool run),
TP_ARGS(nid, skip, run));
DECLARE_HOOK(android_vh_page_referenced_check_bypass,
TP_PROTO(struct page *page, unsigned long nr_to_scan, int lru, bool *bypass),
TP_ARGS(page, nr_to_scan, lru, bypass));
#endif /* _TRACE_HOOK_VMSCAN_H */
/* This part must be outside protection */
#include <trace/define_trace.h>

7
mm/vmscan.c
View File

@@ -2377,6 +2377,7 @@ static void shrink_active_list(unsigned long nr_to_scan,
unsigned nr_rotated = 0;
int file = is_file_lru(lru);
struct pglist_data *pgdat = lruvec_pgdat(lruvec);
bool bypass = false;
lru_add_drain();
@@ -2411,6 +2412,10 @@ static void shrink_active_list(unsigned long nr_to_scan,
}
}
trace_android_vh_page_referenced_check_bypass(page, nr_to_scan, lru, &bypass);
if (bypass)
goto skip_page_referenced;
if (page_referenced(page, 0, sc->target_mem_cgroup,
&vm_flags)) {
/*
@@ -2428,7 +2433,7 @@ static void shrink_active_list(unsigned long nr_to_scan,
continue;
}
}
skip_page_referenced:
ClearPageActive(page); /* we are de-activating */
SetPageWorkingset(page);
list_add(&page->lru, &l_inactive);