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| author | jeff <jeff@FreeBSD.org> | 2002-05-30 05:55:22 +0000 |
|---|---|---|
| committer | jeff <jeff@FreeBSD.org> | 2002-05-30 05:55:22 +0000 |
| commit | feec324370619aa6315e4a5fdeecfe83518d43e5 (patch) | |
| tree | 4a89c6cc6a6e5f1a48a0bacf9e95d8bf8ed9853d /sys/kern/kern_lock.c | |
| parent | aa9fde6b9153de1fbf0c6a327ba8af924e1e11f5 (diff) | |
| download | FreeBSD-src-feec324370619aa6315e4a5fdeecfe83518d43e5.zip FreeBSD-src-feec324370619aa6315e4a5fdeecfe83518d43e5.tar.gz | |
Record the file, line, and pid of the last successful shared lock holder. This
is useful as a last effort in debugging file system deadlocks. This is enabled
via 'options DEBUG_LOCKS'
Diffstat (limited to 'sys/kern/kern_lock.c')
| -rw-r--r-- | sys/kern/kern_lock.c | 6 |
1 files changed, 6 insertions, 0 deletions
diff --git a/sys/kern/kern_lock.c b/sys/kern/kern_lock.c index fddfd26..5189bb7 100644 --- a/sys/kern/kern_lock.c +++ b/sys/kern/kern_lock.c @@ -259,6 +259,12 @@ debuglockmgr(lkp, flags, interlkp, td, name, file, line) if (error) break; sharelock(lkp, 1); +#if defined(DEBUG_LOCKS) + lkp->lk_slockholder = pid; + lkp->lk_sfilename = file; + lkp->lk_slineno = line; + lkp->lk_slockername = name; +#endif break; } /* |
