diff options
| author | Jason Baron <jbaron@redhat.com> | 2007-02-10 01:44:59 -0800 |
|---|---|---|
| committer | Linus Torvalds <torvalds@woody.linux-foundation.org> | 2007-02-11 10:51:26 -0800 |
| commit | 068135e63518314d4efd711142f674ad0841599e (patch) | |
| tree | dbf8193b0e8f3b6c0e735b48c1f8201a6df207ac /include/linux/lockdep.h | |
| parent | 381a229209aa6f7f72375797b7bcfcfe2ae6fcbb (diff) | |
| download | lwn-068135e63518314d4efd711142f674ad0841599e.tar.gz lwn-068135e63518314d4efd711142f674ad0841599e.zip | |
[PATCH] lockdep: add graph depth information to /proc/lockdep
Generate locking graph information into /proc/lockdep, for lock hierarchy
documentation and visualization purposes.
sample output:
c089fd5c OPS: 138 FD: 14 BD: 1 --..: &tty->termios_mutex
-> [c07a3430] tty_ldisc_lock
-> [c07a37f0] &port_lock_key
-> [c07afdc0] &rq->rq_lock_key#2
The lock classes listed are all the first-hop lock dependencies that
lockdep has seen so far.
Signed-off-by: Ingo Molnar <mingo@elte.hu>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'include/linux/lockdep.h')
| -rw-r--r-- | include/linux/lockdep.h | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/include/linux/lockdep.h b/include/linux/lockdep.h index ea097dddc44f..7e1160dde5e7 100644 --- a/include/linux/lockdep.h +++ b/include/linux/lockdep.h @@ -132,6 +132,7 @@ struct lock_list { struct list_head entry; struct lock_class *class; struct stack_trace trace; + int distance; }; /* |