Revert "console: implement lockdep support for console_lock"

[deliverable/linux.git] / kernel / printk.c

diff --git a/kernel/printk.c b/kernel/printk.c
index 19c0d7bcf24a77e0f6de246a30fab029cf3a30cc..267ce780abe8dd0c18b3c6f1d93f3974b75697ed 100644 (file)
--- a/kernel/printk.c
+++ b/kernel/printk.c
@@ -87,12 +87,6 @@ static DEFINE_SEMAPHORE(console_sem);
 struct console *console_drivers;
 EXPORT_SYMBOL_GPL(console_drivers);
 
-#ifdef CONFIG_LOCKDEP
-static struct lockdep_map console_lock_dep_map = {
-       .name = "console_lock"
-};
-#endif
-
 /*
  * This is used for debugging the mess that is the VT code by
  * keeping track if we have the console semaphore held. It's
@@ -870,10 +864,11 @@ static size_t print_time(u64 ts, char *buf)
        if (!printk_time)
                return 0;
 
+       rem_nsec = do_div(ts, 1000000000);
+
        if (!buf)
-               return 15;
+               return snprintf(NULL, 0, "[%5lu.000000] ", (unsigned long)ts);
 
-       rem_nsec = do_div(ts, 1000000000);
        return sprintf(buf, "[%5lu.%06lu] ",
                       (unsigned long)ts, rem_nsec / 1000);
 }
@@ -1923,7 +1918,6 @@ void console_lock(void)
                return;
        console_locked = 1;
        console_may_schedule = 1;
-       mutex_acquire(&console_lock_dep_map, 0, 0, _RET_IP_);
 }
 EXPORT_SYMBOL(console_lock);
 
@@ -1945,7 +1939,6 @@ int console_trylock(void)
        }
        console_locked = 1;
        console_may_schedule = 0;
-       mutex_acquire(&console_lock_dep_map, 0, 1, _RET_IP_);
        return 1;
 }
 EXPORT_SYMBOL(console_trylock);
@@ -2106,7 +2099,6 @@ skip:
                local_irq_restore(flags);
        }
        console_locked = 0;
-       mutex_release(&console_lock_dep_map, 1, _RET_IP_);
 
        /* Release the exclusive_console once it is used */
        if (unlikely(exclusive_console))