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| author | Bryan Drewery <bdrewery@FreeBSD.org> | 2016-08-12 16:05:53 +0000 |
|---|---|---|
| committer | Bryan Drewery <bdrewery@FreeBSD.org> | 2016-08-12 16:05:53 +0000 |
| commit | f566b25e0da88e6954bba6456460b503f5d1155a (patch) | |
| tree | bb4da9d408b9f215c97c411ef76abd3a5824a6f9 /sys/dev/filemon/filemon.c | |
| parent | 15919690b502a1b60b44d40ed9d8347f5aaaba80 (diff) | |
| download | src-f566b25e0da88e6954bba6456460b503f5d1155a.tar.gz src-f566b25e0da88e6954bba6456460b503f5d1155a.zip | |
Avoid taking PROC_LOCK in syscalls if not being traced.
MFC after: 1 week
Sponsored by: EMC / Isilon Storage Division
Notes
Notes:
svn path=/head/; revision=304008
Diffstat (limited to 'sys/dev/filemon/filemon.c')
| -rw-r--r-- | sys/dev/filemon/filemon.c | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/sys/dev/filemon/filemon.c b/sys/dev/filemon/filemon.c index 919af9d6dbe6..26e1bc38d071 100644 --- a/sys/dev/filemon/filemon.c +++ b/sys/dev/filemon/filemon.c @@ -137,6 +137,8 @@ filemon_proc_get(struct proc *p) { struct filemon *filemon; + if (p->p_filemon == NULL) + return (NULL); PROC_LOCK(p); filemon = filemon_acquire(p->p_filemon); PROC_UNLOCK(p); |