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authorJohn Ogness <john.ogness@linutronix.de>2021-03-03 11:15:26 +0100
committerPetr Mladek <pmladek@suse.com>2021-03-08 11:43:32 +0100
commit996e966640ddea7b535cbe7b749e87a3b24f37e8 (patch)
tree4ff31ecacb0fe11b075edce6c9f24b552c8dff7f /kernel/printk/internal.h
parentf9f3f02db98bbe678a8e57fe9432b196174744a3 (diff)
printk: remove logbuf_lock
Since the ringbuffer is lockless, there is no need for it to be protected by @logbuf_lock. Remove @logbuf_lock. @console_seq, @exclusive_console_stop_seq, @console_dropped are protected by @console_lock. Signed-off-by: John Ogness <john.ogness@linutronix.de> Reviewed-by: Petr Mladek <pmladek@suse.com> Signed-off-by: Petr Mladek <pmladek@suse.com> Link: https://lore.kernel.org/r/20210303101528.29901-14-john.ogness@linutronix.de
Diffstat (limited to 'kernel/printk/internal.h')
-rw-r--r--kernel/printk/internal.h4
1 files changed, 1 insertions, 3 deletions
diff --git a/kernel/printk/internal.h b/kernel/printk/internal.h
index 3a8fd491758c..e7acc2888c8e 100644
--- a/kernel/printk/internal.h
+++ b/kernel/printk/internal.h
@@ -12,8 +12,6 @@
#define PRINTK_NMI_CONTEXT_OFFSET 0x010000000
-extern raw_spinlock_t logbuf_lock;
-
__printf(4, 0)
int vprintk_store(int facility, int level,
const struct dev_printk_info *dev_info,
@@ -59,7 +57,7 @@ void defer_console_output(void);
__printf(1, 0) int vprintk_func(const char *fmt, va_list args) { return 0; }
/*
- * In !PRINTK builds we still export logbuf_lock spin_lock, console_sem
+ * In !PRINTK builds we still export console_sem
* semaphore and some of console functions (console_unlock()/etc.), so
* printk-safe must preserve the existing local IRQ guarantees.
*/