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ANDROID: vendor hooks: skip mem reclaim throttle to speed up mem alloc

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1.Allowing certain important threads to skip waiting and direct mem
reclaim, speeding up mem allocation for critical processes.

2.Correcting the statistical count error for PGSCAN_DIRECT_THROTTLE.

Bug: 335586788

Change-Id: I85bbf895d678eb3f5269d3e7a7b3b58e0ebd90fe
Signed-off-by: Lei Liu <liulei.rjpt@vivo.corp-partner.google.com>
This commit is contained in:
Lei Liu 2024-09-10 21:49:50 +08:00
parent 1fa94a1407
commit 5596cd79a7
3 changed files with 9 additions and 0 deletions
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1
drivers/android/vendor_hooks.c
View File

@ -342,6 +342,7 @@ EXPORT_TRACEPOINT_SYMBOL_GPL(android_vh_check_folio_look_around_ref);
EXPORT_TRACEPOINT_SYMBOL_GPL(android_vh_look_around);
EXPORT_TRACEPOINT_SYMBOL_GPL(android_vh_look_around_migrate_folio);
EXPORT_TRACEPOINT_SYMBOL_GPL(android_vh_test_clear_look_around_ref);
EXPORT_TRACEPOINT_SYMBOL_GPL(android_vh_throttle_direct_reclaim_bypass);
EXPORT_TRACEPOINT_SYMBOL_GPL(android_vh_ufs_perf_huristic_ctrl);
EXPORT_TRACEPOINT_SYMBOL_GPL(android_vh_ufs_send_command_post_change);
EXPORT_TRACEPOINT_SYMBOL_GPL(android_vh_ufs_abort_success_ctrl);

3
include/trace/hooks/vmscan.h
View File

@ -24,6 +24,9 @@ DECLARE_HOOK(android_vh_check_folio_look_around_ref,
DECLARE_HOOK(android_vh_do_shrink_slab,
TP_PROTO(struct shrinker *shrinker, long *freeable),
TP_ARGS(shrinker, freeable));
DECLARE_HOOK(android_vh_throttle_direct_reclaim_bypass,
TP_PROTO(bool *bypass),
TP_ARGS(bypass));
DECLARE_HOOK(android_vh_vmscan_kswapd_done,
TP_PROTO(int node_id, unsigned int highest_zoneidx, unsigned int alloc_order,
unsigned int reclaim_order),

5
mm/vmscan.c
View File

@ -7154,6 +7154,7 @@ static bool throttle_direct_reclaim(gfp_t gfp_mask, struct zonelist *zonelist,
struct zoneref *z;
struct zone *zone;
pg_data_t *pgdat = NULL;
bool bypass = false;
/*
* Kernel threads should not be throttled as they may be indirectly
@ -7202,6 +7203,10 @@ static bool throttle_direct_reclaim(gfp_t gfp_mask, struct zonelist *zonelist,
if (!pgdat)
goto out;
trace_android_vh_throttle_direct_reclaim_bypass(&bypass);
if (bypass)
goto out;
/* Account for the throttling */
count_vm_event(PGSCAN_DIRECT_THROTTLE);