linux-kernel - [PATCH 4/5] Container Freezer: Skip frozen cgroups during power management resume

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]

Date:	Mon, 11 Aug 2008 16:53:27 -0700
From:	Matt Helsley <matthltc@...ibm.com>
To:	Andrew Morton <akpm@...ux-foundation.org>
Cc:	"Rafael J. Wysocki" <rjw@...k.pl>, Paul Menage <menage@...gle.com>,
	Li Zefan <lizf@...fujitsu.com>,
	Linux-Kernel <linux-kernel@...r.kernel.org>,
	Linux Containers <containers@...ts.linux-foundation.org>,
	linux-pm@...ts.linux-foundation.org,
	Cedric Le Goater <clg@...ibm.com>,
	"Serge E. Hallyn" <serue@...ibm.com>
Subject: [PATCH 4/5] Container Freezer: Skip frozen cgroups during power management resume

When a system is resumed after a suspend, it will also unfreeze
frozen cgroups.

This patchs modifies the resume sequence to skip the tasks which
are part of a frozen control group.

Signed-off-by: Cedric Le Goater <clg@...ibm.com>
Signed-off-by: Matt Helsley <matthltc@...ibm.com>
Acked-by: Serge E. Hallyn <serue@...ibm.com>
Tested-by: Matt Helsley <matthltc@...ibm.com>
---
 kernel/power/process.c |    3 +++
 1 file changed, 3 insertions(+)

Index: linux-2.6.27-rc1-mm1/kernel/power/process.c
===================================================================
--- linux-2.6.27-rc1-mm1.orig/kernel/power/process.c
+++ linux-2.6.27-rc1-mm1/kernel/power/process.c
@@ -135,6 +135,9 @@ static void thaw_tasks(bool nosig_only)
 		if (nosig_only && should_send_signal(p))
 			continue;
 
+		if (cgroup_frozen(p))
+			continue;
+
 		thaw_process(p);
 	} while_each_thread(g, p);
 	read_unlock(&tasklist_lock);

-- 
--
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/