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authorJason Baron <jbaron@redhat.com>2007-02-10 04:44:59 -0500
committerLinus Torvalds <torvalds@woody.linux-foundation.org>2007-02-11 13:51:26 -0500
commit068135e63518314d4efd711142f674ad0841599e (patch)
treedbf8193b0e8f3b6c0e735b48c1f8201a6df207ac /include/linux
parent381a229209aa6f7f72375797b7bcfcfe2ae6fcbb (diff)
[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')
-rw-r--r--include/linux/lockdep.h1
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 {
132 struct list_head entry; 132 struct list_head entry;
133 struct lock_class *class; 133 struct lock_class *class;
134 struct stack_trace trace; 134 struct stack_trace trace;
135 int distance;
135}; 136};
136 137
137/* 138/*