From mboxrd@z Thu Jan 1 00:00:00 1970 From: Joerg Roedel Subject: [PATCH 6/6] PM / Hibernate: Touch Soft Lockup Watchdog in rtree_next_node Date: Mon, 21 Jul 2014 12:27:02 +0200 Message-ID: <1405938422-21900-7-git-send-email-joro@8bytes.org> References: <1405938422-21900-1-git-send-email-joro@8bytes.org> Return-path: Received: from 8bytes.org ([81.169.241.247]:50857 "EHLO theia.8bytes.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1754673AbaGUK1I (ORCPT ); Mon, 21 Jul 2014 06:27:08 -0400 In-Reply-To: <1405938422-21900-1-git-send-email-joro@8bytes.org> Sender: linux-pm-owner@vger.kernel.org List-Id: linux-pm@vger.kernel.org To: "Rafael J. Wysocki" , Pavel Machek , Len Brown Cc: linux-pm@vger.kernel.org, linux-kernel@vger.kernel.org, Joerg Roedel , Joerg Roedel From: Joerg Roedel When a memory bitmap is fully populated on a large memory machine (several TB of RAM) it can take more than a minute to walk through all bits. This causes the soft lockup detector on these machine to report warnings. Avoid this by touching the soft lockup watchdog in the memory bitmap walking code. Signed-off-by: Joerg Roedel --- kernel/power/snapshot.c | 1 + 1 file changed, 1 insertion(+) diff --git a/kernel/power/snapshot.c b/kernel/power/snapshot.c index 6a4e07e..738d930 100644 --- a/kernel/power/snapshot.c +++ b/kernel/power/snapshot.c @@ -769,6 +769,7 @@ static bool rtree_next_node(struct memory_bitmap *bm) if (&bm->cur.node->list != &bm->cur.zone->leaves) { bm->cur.node_pfn += BM_BITS_PER_BLOCK; bm->cur.node_bit = 0; + touch_softlockup_watchdog(); return true; } -- 1.9.1