From mboxrd@z Thu Jan 1 00:00:00 1970 From: Helge Deller Subject: [PATCH] parisc: Mark cr16 clocksource unstable on SMP systems Date: Mon, 26 Dec 2016 12:46:01 +0100 Message-ID: <20161226114601.GA5893@p100.box> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii To: linux-parisc@vger.kernel.org, James Bottomley , John David Anglin Return-path: List-ID: List-Id: linux-parisc.vger.kernel.org The cr16 interval timer of each CPU is not syncronized to other cr16 timers in other CPUs in a SMP system. So, delay the registration of the cr16 clocksource until all CPUs have been detected and then mark it as unstable and lower it's rating before registering it at the clockource framework. This patch fixes the stalled CPU warnings which we have seen since introduction of the cr16 clocksource. Signed-off-by: Helge Deller diff --git a/arch/parisc/kernel/time.c b/arch/parisc/kernel/time.c index 325f30d..47ef8fd 100644 --- a/arch/parisc/kernel/time.c +++ b/arch/parisc/kernel/time.c @@ -289,9 +289,26 @@ void __init time_init(void) cr16_hz = 100 * PAGE0->mem_10msec; /* Hz */ - /* register at clocksource framework */ - clocksource_register_hz(&clocksource_cr16, cr16_hz);