linux-kernel - Re: [Suspend2-devel] Problem with CFS V20 and Suspend2/tuxonice

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]

Message-ID: <20070825190205.GB15888@elte.hu>
Date:	Sat, 25 Aug 2007 21:02:05 +0200
From:	Ingo Molnar <mingo@...e.hu>
To:	Christian Hesse <mail@...thworm.de>
Cc:	suspend2-devel@...ts.tuxonice.net,
	Fabio Comolli <fabio.comolli@...il.com>,
	linux-kernel@...r.kernel.org, Suspend2-users@...ts.suspend2.net,
	suspend2-devel <suspend2-devel@...ts.suspend2.net>,
	David Rodriguez <livuxman@...il.com>
Subject: Re: [Suspend2-devel] Problem with CFS V20 and Suspend2/tuxonice


* Christian Hesse <mail@...thworm.de> wrote:

> > Reproduced on a Intel Centrino based laptop with gentoo kamikaze7
> > sources (http://forums.gentoo.org/viewtopic-t-577970.html)
> 
> Same problem here: Core Duo, Kernel 2.6.22.5, Suspend 2.2.10, CFS v20.2.

please try the patch below - does it fix the problem?

	Ingo

Index: linux-cfs-2.6.22.5.q/kernel/sched.c
===================================================================
--- linux-cfs-2.6.22.5.q.orig/kernel/sched.c
+++ linux-cfs-2.6.22.5.q/kernel/sched.c
@@ -5043,6 +5043,8 @@ static int migration_thread(void *data)
 		struct migration_req *req;
 		struct list_head *head;
 
+		try_to_freeze();
+
 		spin_lock_irq(&rq->lock);
 
 		if (cpu_is_offline(cpu)) {
@@ -5399,6 +5401,7 @@ migration_call(struct notifier_block *nf
 		p = kthread_create(migration_thread, hcpu, "migration/%d", cpu);
 		if (IS_ERR(p))
 			return NOTIFY_BAD;
+		p->flags |= PF_NOFREEZE;
 		kthread_bind(p, cpu);
 		/* Must be high prio: stop_machine expects to yield to it. */
 		rq = task_rq_lock(p, &flags);
-
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@...r.kernel.org
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Please read the FAQ at  http://www.tux.org/lkml/