summaryrefslogtreecommitdiffstats
diff options
context:
space:
mode:
-rw-r--r--kernel/printk/printk.c11
1 files changed, 6 insertions, 5 deletions
diff --git a/kernel/printk/printk.c b/kernel/printk/printk.c
index 34da86e73d00..94e2b104cdaa 100644
--- a/kernel/printk/printk.c
+++ b/kernel/printk/printk.c
@@ -2028,15 +2028,16 @@ void resume_console(void)
* @cpu: unused
*
* If printk() is called from a CPU that is not online yet, the messages
- * will be spooled but will not show up on the console. This function is
- * called when a new CPU comes online (or fails to come up), and ensures
- * that any such output gets printed.
+ * will be printed on the console only if there are CON_ANYTIME consoles.
+ * This function is called when a new CPU comes online (or fails to come
+ * up) or goes offline.
*/
static int console_cpu_notify(unsigned int cpu)
{
if (!cpuhp_tasks_frozen) {
- console_lock();
- console_unlock();
+ /* If trylock fails, someone else is doing the printing */
+ if (console_trylock())
+ console_unlock();
}
return 0;
}