| Date | Tue, 07 Sep 2010 14:33:43 -0000 | From | Thomas Gleixner <> | Subject | [patch 26/30] printk: Make console_sem a semaphore not a pseudo mutex |
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It needs to be investigated whether it can be replaced by a real mutex, but that needs more thought.
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
--- kernel/printk.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-)
Index: linux-2.6/kernel/printk.c =================================================================== --- linux-2.6.orig/kernel/printk.c +++ linux-2.6/kernel/printk.c @@ -85,7 +85,7 @@ EXPORT_SYMBOL(oops_in_progress); * provides serialisation for access to the entire console * driver system. */ -static DECLARE_MUTEX(console_sem); +static DEFINE_SEMAPHORE(console_sem); struct console *console_drivers; EXPORT_SYMBOL_GPL(console_drivers); @@ -556,7 +556,7 @@ static void zap_locks(void) /* If a crash is occurring, make sure we can't deadlock */ spin_lock_init(&logbuf_lock); /* And make sure that we print immediately */ - init_MUTEX(&console_sem); + sema_init(&console_sem, 1); } #if defined(CONFIG_PRINTK_TIME)
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