diff options
| author | Ingo Molnar <[email protected]> | 2006-10-11 01:22:08 -0700 |
|---|---|---|
| committer | Linus Torvalds <[email protected]> | 2006-10-11 11:14:24 -0700 |
| commit | 256a6b41365e17cebe5c2fc91ddff716c9aa055a (patch) | |
| tree | c491008b3e2fefed6a42ac7f824d191e023fb11f /scripts | |
| parent | 5fcce7432a731e67f1cd3ef1e71dca9ea84dedb1 (diff) | |
[PATCH] lockdep: fix printk recursion logic
Bug reported and fixed by Tilman Schmidt <[email protected]>: if lockdep is
enabled then log messages make it to /var/log/messages belatedly. The
reason is a missed wakeup of klogd.
Initially there was only a lockdep_internal() protection against lockdep
recursion within vprintk() - it grew the 'outer' lockdep_off()/on()
protection only later on. But that lockdep_off() made the
release_console_sem() within vprintk() always happen under the
lockdep_internal() condition, causing the bug.
The right solution to remove the inner protection against recursion here -
the outer one is enough.
Signed-off-by: Ingo Molnar <[email protected]>
Cc: Tilman Schmidt <[email protected]>
Signed-off-by: Andrew Morton <[email protected]>
Signed-off-by: Linus Torvalds <[email protected]>
Diffstat (limited to 'scripts')
0 files changed, 0 insertions, 0 deletions