X-Git-Url: http://pilppa.org/gitweb/?a=blobdiff_plain;f=kernel%2Fprintk.c;h=4b47e59248df00375ce5fda81e760f89e14f9a22;hb=874ff01bd9183ad16495acfd54e93a619d12b8b5;hp=c3d90a58e4c59a3c06ebace24b25c532617e23c9;hpb=045f147f3290395661b56b9231fc4d221e150963;p=linux-2.6-omap-h63xx.git

diff --git a/kernel/printk.c b/kernel/printk.c
index c3d90a58e4c..4b47e59248d 100644
--- a/kernel/printk.c
+++ b/kernel/printk.c
@@ -54,7 +54,7 @@ int console_printk[4] = {
 };
 
 /*
- * Low lever drivers may need that to know if they can schedule in
+ * Low level drivers may need that to know if they can schedule in
  * their unblank() callback or not. So let's export it.
  */
 int oops_in_progress;
@@ -333,13 +333,25 @@ static void __call_console_drivers(unsigned long start, unsigned long end)
 	}
 }
 
+static int __read_mostly ignore_loglevel;
+
+static int __init ignore_loglevel_setup(char *str)
+{
+	ignore_loglevel = 1;
+	printk(KERN_INFO "debug: ignoring loglevel setting.\n");
+
+	return 1;
+}
+
+__setup("ignore_loglevel", ignore_loglevel_setup);
+
 /*
  * Write out chars from start to end - 1 inclusive
  */
 static void _call_console_drivers(unsigned long start,
 				unsigned long end, int msg_log_level)
 {
-	if (msg_log_level < console_loglevel &&
+	if ((msg_log_level < console_loglevel || ignore_loglevel) &&
 			console_drivers && start != end) {
 		if ((start & LOG_BUF_MASK) > (end & LOG_BUF_MASK)) {
 			/* wrapped write */
@@ -471,7 +483,7 @@ static int have_callable_console(void)
  * printk - print a kernel message
  * @fmt: format string
  *
- * This is printk.  It can be called from any context.  We want it to work.
+ * This is printk().  It can be called from any context.  We want it to work.
  *
  * We try to grab the console_sem.  If we succeed, it's easy - we log the output and
  * call the console drivers.  If we fail to get the semaphore we place the output
@@ -517,7 +529,7 @@ asmlinkage int vprintk(const char *fmt, va_list args)
 		zap_locks();
 
 	/* This stops the holder of console_sem just where we want him */
-	local_irq_save(flags);
+	raw_local_irq_save(flags);
 	lockdep_off();
 	spin_lock(&logbuf_lock);
 	printk_cpu = smp_processor_id();
@@ -606,7 +618,7 @@ asmlinkage int vprintk(const char *fmt, va_list args)
 			up(&console_sem);
 		}
 		lockdep_on();
-		local_irq_restore(flags);
+		raw_local_irq_restore(flags);
 	} else {
 		/*
 		 * Someone else owns the drivers.  We drop the spinlock, which
@@ -616,7 +628,7 @@ asmlinkage int vprintk(const char *fmt, va_list args)
 		printk_cpu = UINT_MAX;
 		spin_unlock(&logbuf_lock);
 		lockdep_on();
-		local_irq_restore(flags);
+		raw_local_irq_restore(flags);
 	}
 
 	preempt_enable();
@@ -771,6 +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
  *
@@ -813,8 +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);