Messages in this thread | | | Subject | Re: [PATCH 4/6] Container Freezer: Skip frozen cgroups during power management resume | From | Nigel Cunningham <> | Date | Fri, 01 Aug 2008 20:24:40 +1000 |
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Hi.
On Thu, 2008-07-31 at 22:07 -0700, Matt Helsley wrote: > 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> > Acked-by: Serge E. Hallyn <serue@us.ibm.com> > Tested-by: Matt Helsley <matthltc@us.ibm.com>
I understand the freezer pretty well, so maybe I can help a little.
Acked-by: Nigel Cunningham <nigel@tuxonice.net>
> --- > kernel/power/process.c | 4 ++++ > 1 files changed, 4 insertions(+), 0 deletions(-) > > diff --git a/kernel/power/process.c b/kernel/power/process.c > index 444cea8..ce9e280 100644 > --- a/kernel/power/process.c > +++ b/kernel/power/process.c > @@ -13,6 +13,7 @@ > #include <linux/module.h> > #include <linux/syscalls.h> > #include <linux/freezer.h> > +#include <linux/cgroup_freezer.h> > > /* > * Timeout for stopping processes > @@ -135,6 +136,9 @@ 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); > -- > 1.5.3.7 >
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