On Wed, 1 May 2013, Colin Cross wrote:
> Avoid waking up every thread sleeping in a nanosleep call during > suspend and resume by calling a freezable blocking call. Previous > patches modified the freezer to avoid sending wakeups to threads > that are blocked in freezable blocking calls. > > This call was selected to be converted to a freezable call because > it doesn't hold any locks or release any resources when interrupted > that might be needed by another freezing task or a kernel driver > during suspend, and is a common site where idle userspace tasks are > blocked. > > Signed-off-by: Colin Cross <ccr...@android.com> Acked-by: Thomas Gleixner <t...@linutronix.de> > --- > kernel/hrtimer.c | 3 ++- > 1 file changed, 2 insertions(+), 1 deletion(-) > > diff --git a/kernel/hrtimer.c b/kernel/hrtimer.c > index 14be27f..e036276 100644 > --- a/kernel/hrtimer.c > +++ b/kernel/hrtimer.c > @@ -47,6 +47,7 @@ > #include <linux/sched/sysctl.h> > #include <linux/sched/rt.h> > #include <linux/timer.h> > +#include <linux/freezer.h> > > #include <asm/uaccess.h> > > @@ -1525,7 +1526,7 @@ static int __sched do_nanosleep(struct hrtimer_sleeper > *t, enum hrtimer_mode mod > t->task = NULL; > > if (likely(t->task)) > - schedule(); > + freezable_schedule(); > > hrtimer_cancel(&t->timer); > mode = HRTIMER_MODE_ABS; > -- > 1.8.2.1 > > -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
