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| author | Suren Baghdasaryan <surenb@google.com> | 2023-02-27 09:36:27 -0800 |
|---|---|---|
| committer | Andrew Morton <akpm@linux-foundation.org> | 2023-04-05 20:03:01 -0700 |
| commit | 52f238653e452e0fda61e880f263a173d219acd1 (patch) | |
| tree | 199cd083cb781048caaea10f3301280fcc7d2540 /include/linux/vmstat.h | |
| parent | 444eeb17437a0ef526c606e9141a415d3b7dfddd (diff) | |
| download | linux-stable-52f238653e452e0fda61e880f263a173d219acd1.tar.gz linux-stable-52f238653e452e0fda61e880f263a173d219acd1.tar.bz2 linux-stable-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 'include/linux/vmstat.h')
| -rw-r--r-- | include/linux/vmstat.h | 6 |
1 files changed, 6 insertions, 0 deletions
diff --git a/include/linux/vmstat.h b/include/linux/vmstat.h index 19cf5b6892ce..fed855bae6d8 100644 --- a/include/linux/vmstat.h +++ b/include/linux/vmstat.h @@ -125,6 +125,12 @@ static inline void vm_events_fold_cpu(int cpu) #define count_vm_tlb_events(x, y) do { (void)(y); } while (0) #endif +#ifdef CONFIG_PER_VMA_LOCK_STATS +#define count_vm_vma_lock_event(x) count_vm_event(x) +#else +#define count_vm_vma_lock_event(x) do {} while (0) +#endif + #define __count_zid_vm_events(item, zid, delta) \ __count_vm_events(item##_NORMAL - ZONE_NORMAL + zid, delta) |