linux-kernel - Re: [RFC PATCH 4/5] Remove CPU_DEAD/CPU_UP

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Message-Id: <200710241721.05163.rusty@rustcorp.com.au>
Date:	Wed, 24 Oct 2007 17:21:04 +1000
From:	Rusty Russell <rusty@...tcorp.com.au>
To:	ego@...ibm.com
Cc:	Linus Torvalds <torvalds@...ux-foundation.org>,
	Andrew Morton <akpm@...ux-foundation.org>,
	linux-kernel@...r.kernel.org,
	Srivatsa Vaddagiri <vatsa@...ibm.com>,
	Dipankar Sarma <dipankar@...ibm.com>,
	Ingo Molnar <mingo@...e.hu>, Oleg Nesterov <oleg@...sign.ru>
Subject: Re: [RFC PATCH 4/5] Remove CPU_DEAD/CPU_UP_CANCELLED handling from workqueue.c

On Wednesday 24 October 2007 15:37:16 Gautham R Shenoy wrote:
> @@ -712,7 +712,7 @@ static void start_workqueue_thread(struc
>
>  	if (p != NULL) {
>  		if (cpu >= 0)
> -			kthread_bind(p, cpu);
> +			set_cpus_allowed(p, cpumask_of_cpu(cpu));
>  		wake_up_process(p);
>  	}

Hi Gautham!

	This works, although the change is unnecessary.  If you're going to
do this I'd prefer "if (set_cpus_allowed(p, cpumask_of_cpu(cpu)) != 0) 
BUG();".

Cheers,
Rusty.
-
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