]> err.no Git - linux-2.6/commit
[PATCH] lockdep: add graph depth information to /proc/lockdep
authorJason Baron <jbaron@redhat.com>
Sat, 10 Feb 2007 09:44:59 +0000 (01:44 -0800)
committerLinus Torvalds <torvalds@woody.linux-foundation.org>
Sun, 11 Feb 2007 18:51:26 +0000 (10:51 -0800)
commit068135e63518314d4efd711142f674ad0841599e
treedbf8193b0e8f3b6c0e735b48c1f8201a6df207ac
parent381a229209aa6f7f72375797b7bcfcfe2ae6fcbb
[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>
include/linux/lockdep.h
kernel/lockdep.c
kernel/lockdep_proc.c