diff options
| author | Kent Overstreet <kent.overstreet@linux.dev> | 2023-02-05 16:18:59 -0500 |
|---|---|---|
| committer | Kent Overstreet <kent.overstreet@linux.dev> | 2023-08-14 12:28:41 -0400 |
| commit | 0c98bc862ca2c0bc9182bc49d9e1de9770f0676c (patch) | |
| tree | 750d359cebcf6a043bc48e77c2405bee6b0a1215 | |
| parent | 5aeecaf631d97ad97b361dde2b4c4fd7ff1dda80 (diff) | |
six locks: Lock contended tracepoints
Signed-off-by: Kent Overstreet <kent.overstreet@linux.dev>
| -rw-r--r-- | fs/bcachefs/six.c | 8 |
1 files changed, 6 insertions, 2 deletions
diff --git a/fs/bcachefs/six.c b/fs/bcachefs/six.c index 748003a6e5e0..581aee565e95 100644 --- a/fs/bcachefs/six.c +++ b/fs/bcachefs/six.c @@ -10,6 +10,8 @@ #include <linux/sched/rt.h> #include <linux/slab.h> +#include <trace/events/lock.h> + #include "six.h" #ifdef DEBUG @@ -454,11 +456,12 @@ static int six_lock_slowpath(struct six_lock *lock, enum six_lock_type type, smp_mb__after_atomic(); } + trace_contention_begin(lock, 0); + lock_contended(&lock->dep_map, ip); + if (six_optimistic_spin(lock, type)) goto out; - lock_contended(&lock->dep_map, ip); - wait->task = current; wait->lock_want = type; wait->lock_acquired = false; @@ -523,6 +526,7 @@ out: six_clear_bitmask(lock, SIX_LOCK_HELD_write); six_lock_wakeup(lock, atomic_read(&lock->state), SIX_LOCK_read); } + trace_contention_end(lock, 0); return ret; } |