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Subject: Re: [PATCH 1/3] windfarm: dont die on suspend thread signal
From: Benjamin Herrenschmidt <benh@kernel.crashing.org>
To: Johannes Berg <johannes@sipsolutions.net>
In-Reply-To: <20061213123944.747406000@sipsolutions.net>>
References: <20061213123819.403286000@sipsolutions.net> >
	<20061213123944.747406000@sipsolutions.net>>
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Date: Wed, 24 Jan 2007 17:32:24 +1100
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On Wed, 2006-12-13 at 13:38 +0100, Johannes Berg wrote:
> plain text document attachment (windfarm-dont-die-on-signals.patch)
> When the windfarm thread gets a suspend signal it will die instead of
> freezing. This fixes it.
> 
> Signed-off-by: Johannes Berg <johannes@sipsolutions.net>

Acked-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>

> --- linux-2.6-git.orig/drivers/macintosh/windfarm_core.c	2006-12-11 23:34:47.082716759 +0100
> +++ linux-2.6-git/drivers/macintosh/windfarm_core.c	2006-12-11 23:37:58.181716759 +0100
> @@ -93,8 +93,6 @@ static int wf_thread_func(void *data)
>  	DBG("wf: thread started\n");
>  
>  	while(!kthread_should_stop()) {
> -		try_to_freeze();
> -
>  		if (time_after_eq(jiffies, next)) {
>  			wf_notify(WF_EVENT_TICK, NULL);
>  			if (wf_overtemp) {
> @@ -117,8 +115,8 @@ static int wf_thread_func(void *data)
>  		if (delay <= HZ)
>  			schedule_timeout_interruptible(delay);
>  
> -		/* there should be no signal, but oh well */
> -		if (signal_pending(current)) {
> +		/* there should be no non-suspend signal, but oh well */
> +		if (signal_pending(current) && !try_to_freeze()) {
>  			printk(KERN_WARNING "windfarm: thread got sigl !\n");
>  			break;
>  		}
> 
> --