diff options
| author | Kirill Korotaev <dev@sw.ru> | 2007-02-10 01:46:19 -0800 |
|---|---|---|
| committer | Linus Torvalds <torvalds@woody.linux-foundation.org> | 2007-02-11 10:51:34 -0800 |
| commit | e3e8a75d2acfc61ebf25524666a0a2c6abb0620c (patch) | |
| tree | bd3d3e57f7b9084544155ac562f4456693e25e55 | |
| parent | cefc8be82403cfc4325e7b9b063f77dc0f34e19e (diff) | |
| download | op-kernel-dev-e3e8a75d2acfc61ebf25524666a0a2c6abb0620c.zip op-kernel-dev-e3e8a75d2acfc61ebf25524666a0a2c6abb0620c.tar.gz | |
[PATCH] Extract and use wake_up_klogd()
Remove hack with printing space to wake up klogd. Use explicit
wake_up_klogd().
See earlier discussion
http://groups.google.com/group/fa.linux.kernel/browse_frm/thread/75f496668409f58d/1a8f28983a51e1ff?lnk=st&q=wake_up_klogd+group%3Afa.linux.kernel&rnum=2#1a8f28983a51e1ff
Signed-off-by: Alexey Dobriyan <adobriyan@openvz.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
| -rw-r--r-- | include/linux/kernel.h | 1 | ||||
| -rw-r--r-- | kernel/printk.c | 10 | ||||
| -rw-r--r-- | lib/bust_spinlocks.c | 10 |
3 files changed, 10 insertions, 11 deletions
diff --git a/include/linux/kernel.h b/include/linux/kernel.h index 7e86130..e91dce7 100644 --- a/include/linux/kernel.h +++ b/include/linux/kernel.h @@ -176,6 +176,7 @@ static inline void console_verbose(void) } extern void bust_spinlocks(int yes); +extern void wake_up_klogd(void); extern int oops_in_progress; /* If set, an oops, panic(), BUG() or die() is in progress */ extern int panic_timeout; extern int panic_on_oops; diff --git a/kernel/printk.c b/kernel/printk.c index 3e79e18..4da26b0 100644 --- a/kernel/printk.c +++ b/kernel/printk.c @@ -783,6 +783,12 @@ int is_console_locked(void) return console_locked; } +void wake_up_klogd(void) +{ + if (!oops_in_progress && waitqueue_active(&log_wait)) + wake_up_interruptible(&log_wait); +} + /** * release_console_sem - unlock the console system * @@ -825,8 +831,8 @@ void release_console_sem(void) console_locked = 0; up(&console_sem); spin_unlock_irqrestore(&logbuf_lock, flags); - if (wake_klogd && !oops_in_progress && waitqueue_active(&log_wait)) - wake_up_interruptible(&log_wait); + if (wake_klogd) + wake_up_klogd(); } EXPORT_SYMBOL(release_console_sem); diff --git a/lib/bust_spinlocks.c b/lib/bust_spinlocks.c index 0ee968e..accb356 100644 --- a/lib/bust_spinlocks.c +++ b/lib/bust_spinlocks.c @@ -19,19 +19,11 @@ void __attribute__((weak)) bust_spinlocks(int yes) if (yes) { oops_in_progress = 1; } else { - int loglevel_save = console_loglevel; #ifdef CONFIG_VT unblank_screen(); #endif oops_in_progress = 0; - /* - * OK, the message is on the console. Now we call printk() - * without oops_in_progress set so that printk() will give klogd - * and the blanked console a poke. Hold onto your hats... - */ - console_loglevel = 15; /* NMI oopser may have shut the console up */ - printk(" "); - console_loglevel = loglevel_save; + wake_up_klogd(); } } |
