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ANDROID: mm: vh for compaction begin/end

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Add vendor hook for compaction begin/end.  The first use would be
to measure compaction durations.

Bug: 229927848
Test: local kernel build test
Signed-off-by: Robin Hsu <robinhsu@google.com>
Change-Id: I3d95434bf49b37199056dc9ddfc36a59a7de17b7
This commit is contained in:
Robin Hsu
2022-05-13 10:19:50 +08:00
parent d68ba8769b
commit 13b6bd38bb
3 changed files with 14 additions and 0 deletions
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2
drivers/android/vendor_hooks.c
View File

@@ -214,6 +214,8 @@ EXPORT_TRACEPOINT_SYMBOL_GPL(android_rvh_pick_next_entity);
EXPORT_TRACEPOINT_SYMBOL_GPL(android_rvh_check_preempt_wakeup);
EXPORT_TRACEPOINT_SYMBOL_GPL(android_vh_cma_alloc_start);
EXPORT_TRACEPOINT_SYMBOL_GPL(android_vh_cma_alloc_finish);
EXPORT_TRACEPOINT_SYMBOL_GPL(android_vh_mm_compaction_begin);
EXPORT_TRACEPOINT_SYMBOL_GPL(android_vh_mm_compaction_end);
EXPORT_TRACEPOINT_SYMBOL_GPL(android_vh_rmqueue);
EXPORT_TRACEPOINT_SYMBOL_GPL(android_vh_pagecache_get_page);
EXPORT_TRACEPOINT_SYMBOL_GPL(android_vh_filemap_fault_get_page);

7
include/trace/hooks/mm.h
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@@ -14,6 +14,7 @@
#include <trace/hooks/vendor_hooks.h>
struct cma;
struct compact_control;
DECLARE_RESTRICTED_HOOK(android_rvh_set_skip_swapcache_flags,
TP_PROTO(gfp_t *flags),
@@ -31,6 +32,12 @@ DECLARE_HOOK(android_vh_cma_alloc_finish,
TP_PROTO(struct cma *cma, struct page *page, unsigned long count,
unsigned int align, gfp_t gfp_mask, s64 ts),
TP_ARGS(cma, page, count, align, gfp_mask, ts));
DECLARE_HOOK(android_vh_mm_compaction_begin,
TP_PROTO(struct compact_control *cc, long *vendor_ret),
TP_ARGS(cc, vendor_ret));
DECLARE_HOOK(android_vh_mm_compaction_end,
TP_PROTO(struct compact_control *cc, long vendor_ret),
TP_ARGS(cc, vendor_ret));
DECLARE_HOOK(android_vh_rmqueue,
TP_PROTO(struct zone *preferred_zone, struct zone *zone,
unsigned int order, gfp_t gfp_flags,

5
mm/compaction.c
View File

@@ -44,6 +44,8 @@ static inline void count_compact_events(enum vm_event_item item, long delta)
#define CREATE_TRACE_POINTS
#include <trace/events/compaction.h>
#undef CREATE_TRACE_POINTS
#include <trace/hooks/mm.h>
#define block_start_pfn(pfn, order) round_down(pfn, 1UL << (order))
#define block_end_pfn(pfn, order) ALIGN((pfn) + 1, 1UL << (order))
@@ -2228,6 +2230,7 @@ compact_zone(struct compact_control *cc, struct capture_control *capc)
unsigned long last_migrated_pfn;
const bool sync = cc->mode != MIGRATE_ASYNC;
bool update_cached;
long vendor_ret;
/*
* These counters track activities during zone compaction. Initialize
@@ -2299,6 +2302,7 @@ compact_zone(struct compact_control *cc, struct capture_control *capc)
trace_mm_compaction_begin(start_pfn, cc->migrate_pfn,
cc->free_pfn, end_pfn, sync);
trace_android_vh_mm_compaction_begin(cc, &vendor_ret);
/* lru_add_drain_all could be expensive with involving other CPUs */
lru_add_drain();
@@ -2426,6 +2430,7 @@ out:
count_compact_events(COMPACTMIGRATE_SCANNED, cc->total_migrate_scanned);
count_compact_events(COMPACTFREE_SCANNED, cc->total_free_scanned);
trace_android_vh_mm_compaction_end(cc, vendor_ret);
trace_mm_compaction_end(start_pfn, cc->migrate_pfn,
cc->free_pfn, end_pfn, sync, ret);