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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: echo 1 > /proc/sys/vm/compact_memory and observe output change in
/sys/kernel/pixel_stat/mm/compaction/mm_compaction_duration
Signed-off-by: Robin Hsu <robinhsu@google.com>
Change-Id: I3d95434bf49b37199056dc9ddfc36a59a7de17b7
Signed-off-by: Richard Chang <richardycc@google.com>
(cherry picked from commit 13b6bd38bb)
Signed-off-by: liangjlee <liangjlee@google.com>
This commit is contained in:
Robin Hsu
2022-05-13 10:19:50 +08:00
committed by Treehugger Robot
parent 2176509c4d
commit e3e2ece8a0
3 changed files with 13 additions and 0 deletions
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2
drivers/android/vendor_hooks.c
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@@ -341,3 +341,5 @@ EXPORT_TRACEPOINT_SYMBOL_GPL(android_vh_mm_alloc_pages_direct_reclaim_enter);
EXPORT_TRACEPOINT_SYMBOL_GPL(android_vh_mm_alloc_pages_direct_reclaim_exit); EXPORT_TRACEPOINT_SYMBOL_GPL(android_vh_mm_alloc_pages_direct_reclaim_exit);
EXPORT_TRACEPOINT_SYMBOL_GPL(android_vh_mm_alloc_pages_may_oom_exit); EXPORT_TRACEPOINT_SYMBOL_GPL(android_vh_mm_alloc_pages_may_oom_exit);
EXPORT_TRACEPOINT_SYMBOL_GPL(android_vh_vmscan_kswapd_done); EXPORT_TRACEPOINT_SYMBOL_GPL(android_vh_vmscan_kswapd_done);
EXPORT_TRACEPOINT_SYMBOL_GPL(android_vh_mm_compaction_begin);
EXPORT_TRACEPOINT_SYMBOL_GPL(android_vh_mm_compaction_end);

7
include/trace/hooks/mm.h
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@@ -12,6 +12,7 @@
struct shmem_inode_info; struct shmem_inode_info;
struct folio; struct folio;
struct page_vma_mapped_walk; struct page_vma_mapped_walk;
struct compact_control;
DECLARE_RESTRICTED_HOOK(android_rvh_shmem_get_folio, DECLARE_RESTRICTED_HOOK(android_rvh_shmem_get_folio,
TP_PROTO(struct shmem_inode_info *info, struct folio **folio), TP_PROTO(struct shmem_inode_info *info, struct folio **folio),
@@ -106,6 +107,12 @@ DECLARE_HOOK(android_vh_madvise_cold_pageout_skip,
TP_PROTO(struct vm_area_struct *vma, struct page *page, bool pageout, bool *need_skip), TP_PROTO(struct vm_area_struct *vma, struct page *page, bool pageout, bool *need_skip),
TP_ARGS(vma, page, pageout, need_skip)); TP_ARGS(vma, page, pageout, need_skip));
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));
struct mem_cgroup; struct mem_cgroup;
DECLARE_HOOK(android_vh_mem_cgroup_alloc, DECLARE_HOOK(android_vh_mem_cgroup_alloc,
TP_PROTO(struct mem_cgroup *memcg), TP_PROTO(struct mem_cgroup *memcg),

4
mm/compaction.c
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@@ -51,6 +51,7 @@ static inline void count_compact_events(enum vm_event_item item, long delta)
#include <trace/events/compaction.h> #include <trace/events/compaction.h>
#undef CREATE_TRACE_POINTS #undef CREATE_TRACE_POINTS
#include <trace/hooks/compaction.h> #include <trace/hooks/compaction.h>
#include <trace/hooks/mm.h>
#define block_start_pfn(pfn, order) round_down(pfn, 1UL << (order)) #define block_start_pfn(pfn, order) round_down(pfn, 1UL << (order))
#define block_end_pfn(pfn, order) ALIGN((pfn) + 1, 1UL << (order)) #define block_end_pfn(pfn, order) ALIGN((pfn) + 1, 1UL << (order))
@@ -2323,6 +2324,7 @@ compact_zone(struct compact_control *cc, struct capture_control *capc)
const bool sync = cc->mode != MIGRATE_ASYNC; const bool sync = cc->mode != MIGRATE_ASYNC;
bool update_cached; bool update_cached;
unsigned int nr_succeeded = 0; unsigned int nr_succeeded = 0;
long vendor_ret;
/* /*
* These counters track activities during zone compaction. Initialize * These counters track activities during zone compaction. Initialize
@@ -2393,6 +2395,7 @@ compact_zone(struct compact_control *cc, struct capture_control *capc)
cc->zone->compact_cached_migrate_pfn[0] == cc->zone->compact_cached_migrate_pfn[1]; cc->zone->compact_cached_migrate_pfn[0] == cc->zone->compact_cached_migrate_pfn[1];
trace_mm_compaction_begin(cc, start_pfn, end_pfn, sync); trace_mm_compaction_begin(cc, start_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_all could be expensive with involving other CPUs */
lru_add_drain(); lru_add_drain();
@@ -2518,6 +2521,7 @@ out:
count_compact_events(COMPACTMIGRATE_SCANNED, cc->total_migrate_scanned); count_compact_events(COMPACTMIGRATE_SCANNED, cc->total_migrate_scanned);
count_compact_events(COMPACTFREE_SCANNED, cc->total_free_scanned); count_compact_events(COMPACTFREE_SCANNED, cc->total_free_scanned);
trace_android_vh_mm_compaction_end(cc, vendor_ret);
trace_mm_compaction_end(cc, start_pfn, end_pfn, sync, ret); trace_mm_compaction_end(cc, start_pfn, end_pfn, sync, ret);
return ret; return ret;