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-rw-r--r--include/linux/kernel.h1
-rw-r--r--kernel/printk.c10
-rw-r--r--lib/bust_spinlocks.c10
3 files changed, 10 insertions, 11 deletions
diff --git a/include/linux/kernel.h b/include/linux/kernel.h
index 7e861303cbde..e91dce75bbcc 100644
--- a/include/linux/kernel.h
+++ b/include/linux/kernel.h
@@ -176,6 +176,7 @@ static inline void console_verbose(void)
176} 176}
177 177
178extern void bust_spinlocks(int yes); 178extern void bust_spinlocks(int yes);
179extern void wake_up_klogd(void);
179extern int oops_in_progress; /* If set, an oops, panic(), BUG() or die() is in progress */ 180extern int oops_in_progress; /* If set, an oops, panic(), BUG() or die() is in progress */
180extern int panic_timeout; 181extern int panic_timeout;
181extern int panic_on_oops; 182extern int panic_on_oops;
diff --git a/kernel/printk.c b/kernel/printk.c
index 3e79e18dce33..4da26b067976 100644
--- a/kernel/printk.c
+++ b/kernel/printk.c
@@ -783,6 +783,12 @@ int is_console_locked(void)
783 return console_locked; 783 return console_locked;
784} 784}
785 785
786void wake_up_klogd(void)
787{
788 if (!oops_in_progress && waitqueue_active(&log_wait))
789 wake_up_interruptible(&log_wait);
790}
791
786/** 792/**
787 * release_console_sem - unlock the console system 793 * release_console_sem - unlock the console system
788 * 794 *
@@ -825,8 +831,8 @@ void release_console_sem(void)
825 console_locked = 0; 831 console_locked = 0;
826 up(&console_sem); 832 up(&console_sem);
827 spin_unlock_irqrestore(&logbuf_lock, flags); 833 spin_unlock_irqrestore(&logbuf_lock, flags);
828 if (wake_klogd && !oops_in_progress && waitqueue_active(&log_wait)) 834 if (wake_klogd)
829 wake_up_interruptible(&log_wait); 835 wake_up_klogd();
830} 836}
831EXPORT_SYMBOL(release_console_sem); 837EXPORT_SYMBOL(release_console_sem);
832 838
diff --git a/lib/bust_spinlocks.c b/lib/bust_spinlocks.c
index 0ee968e8e023..accb35658169 100644
--- a/lib/bust_spinlocks.c
+++ b/lib/bust_spinlocks.c
@@ -19,19 +19,11 @@ void __attribute__((weak)) bust_spinlocks(int yes)
19 if (yes) { 19 if (yes) {
20 oops_in_progress = 1; 20 oops_in_progress = 1;
21 } else { 21 } else {
22 int loglevel_save = console_loglevel;
23#ifdef CONFIG_VT 22#ifdef CONFIG_VT
24 unblank_screen(); 23 unblank_screen();
25#endif 24#endif
26 oops_in_progress = 0; 25 oops_in_progress = 0;
27 /* 26 wake_up_klogd();
28 * OK, the message is on the console. Now we call printk()
29 * without oops_in_progress set so that printk() will give klogd
30 * and the blanked console a poke. Hold onto your hats...
31 */
32 console_loglevel = 15; /* NMI oopser may have shut the console up */
33 printk(" ");
34 console_loglevel = loglevel_save;
35 } 27 }
36} 28}
37 29