Messages in this thread Patch in this message | | | Date | Mon, 07 Jul 2008 15:58:27 -0700 | From | Matt Helsley <> | Subject | [PATCH 4/4] Container Freezer: Skip frozen cgroups during power management resume |
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From: Cedric Le Goater <clg@fr.ibm.com> Subject: [PATCH 4/4] 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@fr.ibm.com> Signed-off-by: Matt Helsley <matthltc@us.ibm.com> Tested-by: Matt Helsley <matthltc@us.ibm.com> --- kernel/power/process.c | 4 ++++ 1 file changed, 4 insertions(+)
Index: linux-2.6.26-rc5-mm2/kernel/power/process.c =================================================================== --- linux-2.6.26-rc5-mm2.orig/kernel/power/process.c +++ linux-2.6.26-rc5-mm2/kernel/power/process.c @@ -11,10 +11,11 @@ #include <linux/interrupt.h> #include <linux/suspend.h> #include <linux/module.h> #include <linux/syscalls.h> #include <linux/freezer.h> +#include <linux/cgroup_freezer.h> /* * Timeout for stopping processes */ #define TIMEOUT (20 * HZ) @@ -133,10 +134,13 @@ static void thaw_tasks(bool nosig_only) continue; 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); } --
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