Hi!
> From: Rafael J. Wysocki <rjw@xxxxxxx>
>
> Introduce freezer-friendly wrappers around wait_event_interruptible() and
> wait_event_interruptible_timeout(), originally defined in <linux/wait.h>, to
> be used in freezable kernel threads. Make some of the freezable kernel threads
> use them.
>
> This is necessary for the freezer to stop sending signals to kernel threads,
> which is implemented in the next patch.
>
> Signed-off-by: Rafael J. Wysocki <rjw@xxxxxxx>
ACK, but...
> +/*
> + * Freezer-friendly wrappers around wait_event_interruptible() and
> + * wait_event_interruptible_timeout(), originally defined in <linux/wait.h>
> + */
> +
> +#define wait_event_freezable(wq, condition) \
> +({ \
> + int __ret; \
> + do { \
> + __ret = wait_event_interruptible(wq, \
> + (condition) || freezing(current)); \
> + try_to_freeze(); \
> + } while (!(condition)); \
> + __ret; \
> +})
...
> Index: linux-2.6.22-rc6-mm1/drivers/media/dvb/dvb-core/dvb_frontend.c
> ===================================================================
> --- linux-2.6.22-rc6-mm1.orig/drivers/media/dvb/dvb-core/dvb_frontend.c 2007-07-11 20:48:04.000000000 +0200
> +++ linux-2.6.22-rc6-mm1/drivers/media/dvb/dvb-core/dvb_frontend.c 2007-07-11 20:51:14.000000000 +0200
> @@ -528,7 +528,8 @@ static int dvb_frontend_thread(void *dat
> up(&fepriv->sem); /* is locked when we enter the thread... */
> restart:
> timeout = wait_event_interruptible_timeout(fepriv->wait_queue,
> - dvb_frontend_should_wakeup(fe) || kthread_should_stop(),
> + dvb_frontend_should_wakeup(fe) || kthread_should_stop()
> + || freezing(current),
> fepriv->delay);
Should this use the new helper? This change does not seem to match the rest.
Pavel
--
(english) http://www.livejournal.com/~pavelmachek
(cesky, pictures) http://atrey.karlin.mff.cuni.cz/~pavel/picture/horses/blog.html
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