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authorJason Baron <jbaron@redhat.com>2007-02-10 01:44:59 -0800
committerLinus Torvalds <torvalds@woody.linux-foundation.org>2007-02-11 10:51:26 -0800
commit068135e63518314d4efd711142f674ad0841599e (patch)
treedbf8193b0e8f3b6c0e735b48c1f8201a6df207ac /include/linux/lockdep.h
parent381a229209aa6f7f72375797b7bcfcfe2ae6fcbb (diff)
downloadop-kernel-dev-068135e63518314d4efd711142f674ad0841599e.zip
op-kernel-dev-068135e63518314d4efd711142f674ad0841599e.tar.gz
[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.h1
1 files changed, 1 insertions, 0 deletions
diff --git a/include/linux/lockdep.h b/include/linux/lockdep.h
index ea097dd..7e1160d 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;
};
/*
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