From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1756087AbdDRMZT (ORCPT ); Tue, 18 Apr 2017 08:25:19 -0400 Received: from mx1.redhat.com ([209.132.183.28]:59028 "EHLO mx1.redhat.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1752425AbdDRMZO (ORCPT ); Tue, 18 Apr 2017 08:25:14 -0400 DMARC-Filter: OpenDMARC Filter v1.3.2 mx1.redhat.com 8DFCEC05973C Authentication-Results: ext-mx08.extmail.prod.ext.phx2.redhat.com; dmarc=none (p=none dis=none) header.from=redhat.com Authentication-Results: ext-mx08.extmail.prod.ext.phx2.redhat.com; spf=pass smtp.mailfrom=prarit@redhat.com DKIM-Filter: OpenDKIM Filter v2.11.0 mx1.redhat.com 8DFCEC05973C From: Prarit Bhargava To: linux-kernel@vger.kernel.org Cc: Prarit Bhargava , Thomas Gleixner , Ingo Molnar , "H. Peter Anvin" , x86@kernel.org, Wanpeng Li , Andrew Morton , "Steven Rostedt (VMware)" , Daniel Bristot de Oliveira , Hidehiro Kawai Subject: [PATCH] x86/smp: Update reschedule warning text Date: Tue, 18 Apr 2017 08:25:05 -0400 Message-Id: <1492518305-3808-1-git-send-email-prarit@redhat.com> X-Greylist: Sender IP whitelisted, not delayed by milter-greylist-4.5.16 (mx1.redhat.com [10.5.110.32]); Tue, 18 Apr 2017 12:25:13 +0000 (UTC) Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Modify the reschedule warning to output the offline CPU value and a better debug message. Signed-off-by: Prarit Bhargava Cc: Thomas Gleixner Cc: Ingo Molnar Cc: "H. Peter Anvin" Cc: x86@kernel.org Cc: Wanpeng Li Cc: Andrew Morton Cc: "Steven Rostedt (VMware)" Cc: Daniel Bristot de Oliveira Cc: Hidehiro Kawai --- arch/x86/kernel/smp.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/arch/x86/kernel/smp.c b/arch/x86/kernel/smp.c index d3c66a15bbde..94da6f6971bf 100644 --- a/arch/x86/kernel/smp.c +++ b/arch/x86/kernel/smp.c @@ -124,7 +124,7 @@ static void native_smp_send_reschedule(int cpu) { if (unlikely(cpu_is_offline(cpu))) { - WARN_ON(1); + WARN(1, "Attempting to schedule on offline CPU %d\n", cpu); return; } apic->send_IPI(cpu, RESCHEDULE_VECTOR); -- 1.7.9.3