diff options
| author | Suren Baghdasaryan <surenb@google.com> | 2023-02-27 18:36:27 +0100 |
|---|---|---|
| committer | Andrew Morton <akpm@linux-foundation.org> | 2023-04-06 05:03:01 +0200 |
| commit | 52f238653e452e0fda61e880f263a173d219acd1 (patch) | |
| tree | 199cd083cb781048caaea10f3301280fcc7d2540 /mm/vmstat.c | |
| parent | mm: prevent userfaults to be handled under per-vma lock (diff) | |
| download | linux-52f238653e452e0fda61e880f263a173d219acd1.tar.xz linux-52f238653e452e0fda61e880f263a173d219acd1.zip | |
mm: introduce per-VMA lock statistics
Add a new CONFIG_PER_VMA_LOCK_STATS config option to dump extra statistics
about handling page fault under VMA lock.
Link: https://lkml.kernel.org/r/20230227173632.3292573-29-surenb@google.com
Signed-off-by: Suren Baghdasaryan <surenb@google.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Diffstat (limited to 'mm/vmstat.c')
| -rw-r--r-- | mm/vmstat.c | 6 |
1 files changed, 6 insertions, 0 deletions
diff --git a/mm/vmstat.c b/mm/vmstat.c index b7307627772d..c28046371b45 100644 --- a/mm/vmstat.c +++ b/mm/vmstat.c @@ -1399,6 +1399,12 @@ const char * const vmstat_text[] = { "direct_map_level2_splits", "direct_map_level3_splits", #endif +#ifdef CONFIG_PER_VMA_LOCK_STATS + "vma_lock_success", + "vma_lock_abort", + "vma_lock_retry", + "vma_lock_miss", +#endif #endif /* CONFIG_VM_EVENT_COUNTERS || CONFIG_MEMCG */ }; #endif /* CONFIG_PROC_FS || CONFIG_SYSFS || CONFIG_NUMA || CONFIG_MEMCG */ |