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    Subject[patch 26/30] printk: Make console_sem a semaphore not a pseudo mutex
    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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