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| author | John Ogness <john.ogness@linutronix.de> | 2021-03-03 11:15:26 +0100 |
|---|---|---|
| committer | Petr Mladek <pmladek@suse.com> | 2021-03-08 11:43:32 +0100 |
| commit | 996e966640ddea7b535cbe7b749e87a3b24f37e8 (patch) | |
| tree | 4ff31ecacb0fe11b075edce6c9f24b552c8dff7f /kernel/printk/internal.h | |
| parent | f9f3f02db98bbe678a8e57fe9432b196174744a3 (diff) | |
| download | linux-996e966640ddea7b535cbe7b749e87a3b24f37e8.tar.gz linux-996e966640ddea7b535cbe7b749e87a3b24f37e8.tar.bz2 linux-996e966640ddea7b535cbe7b749e87a3b24f37e8.zip | |
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.h | 4 |
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. */ |