[patch 4/4] Container Freezer: Skip frozen cgroups during power management resume
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); } -- _______________________________________________ Containers mailing list Containers@lists.linux-foundation.org https://lists.linux-foundation.org/mailman/listinfo/containers