diff options
| author | Petr Mladek <pmladek@suse.com> | 2018-06-27 16:08:16 +0200 |
|---|---|---|
| committer | Petr Mladek <pmladek@suse.com> | 2018-07-09 14:08:13 +0200 |
| commit | a338f84dc196f44b63ba0863d2f34fd9b1613572 (patch) | |
| tree | 054a458fe019c4c5fc66cdcf4917b762fb4a6663 /kernel/printk/printk.c | |
| parent | ba552399954dde1b388f7749fecad5c349216981 (diff) | |
| download | linux-a338f84dc196f44b63ba0863d2f34fd9b1613572.tar.gz | |
printk: Create helper function to queue deferred console handling
It is just a preparation step. The patch does not change
the existing behavior.
Link: http://lkml.kernel.org/r/20180627140817.27764-3-pmladek@suse.com
To: Steven Rostedt <rostedt@goodmis.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Tetsuo Handa <penguin-kernel@I-love.SAKURA.ne.jp>
Cc: Sergey Senozhatsky <sergey.senozhatsky.work@gmail.com>
Cc: linux-kernel@vger.kernel.org
Cc: stable@vger.kernel.org
Acked-by: Sergey Senozhatsky <sergey.senozhatsky@gmail.com>
Signed-off-by: Petr Mladek <pmladek@suse.com>
Diffstat (limited to 'kernel/printk/printk.c')
| -rw-r--r-- | kernel/printk/printk.c | 14 |
1 files changed, 9 insertions, 5 deletions
diff --git a/kernel/printk/printk.c b/kernel/printk/printk.c index a844c611b17c..1d1513215c22 100644 --- a/kernel/printk/printk.c +++ b/kernel/printk/printk.c @@ -2887,16 +2887,20 @@ void wake_up_klogd(void) preempt_enable(); } -int vprintk_deferred(const char *fmt, va_list args) +void defer_console_output(void) { - int r; - - r = vprintk_emit(0, LOGLEVEL_SCHED, NULL, 0, fmt, args); - preempt_disable(); __this_cpu_or(printk_pending, PRINTK_PENDING_OUTPUT); irq_work_queue(this_cpu_ptr(&wake_up_klogd_work)); preempt_enable(); +} + +int vprintk_deferred(const char *fmt, va_list args) +{ + int r; + + r = vprintk_emit(0, LOGLEVEL_SCHED, NULL, 0, fmt, args); + defer_console_output(); return r; } |