From a338f84dc196f44b63ba0863d2f34fd9b1613572 Mon Sep 17 00:00:00 2001 From: Petr Mladek Date: Wed, 27 Jun 2018 16:08:16 +0200 Subject: 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 Cc: Peter Zijlstra Cc: Tetsuo Handa Cc: Sergey Senozhatsky Cc: linux-kernel@vger.kernel.org Cc: stable@vger.kernel.org Acked-by: Sergey Senozhatsky Signed-off-by: Petr Mladek --- kernel/printk/printk.c | 14 +++++++++----- 1 file changed, 9 insertions(+), 5 deletions(-) (limited to 'kernel/printk') 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; } -- cgit v1.2.3