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@xxxxxxxxxx> Signed-off-by: Matt Helsley <matthltc@xxxxxxxxxx> Tested-by: Matt Helsley <matthltc@xxxxxxxxxx> --- kernel/power/process.c | 4 ++++ 1 file changed, 4 insertions(+) Index: linux-2.6.25-mm1/kernel/power/process.c =================================================================== --- linux-2.6.25-mm1.orig/kernel/power/process.c +++ linux-2.6.25-mm1/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) @@ -150,10 +151,13 @@ static void thaw_tasks(int thaw_user_spa continue; if (!p->mm == thaw_user_space) continue; + if (cgroup_frozen(p)) + continue; + thaw_process(p); } while_each_thread(g, p); read_unlock(&tasklist_lock); } -- _______________________________________________ linux-pm mailing list linux-pm@xxxxxxxxxxxxxxxxxxxxxxxxxx https://lists.linux-foundation.org/mailman/listinfo/linux-pm
