linux-kernel - Re: [PATCH] stop_machine: fixup cut'n'paste error in stopped thread name

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Date:	Wed, 5 Oct 2011 07:03:56 +0100
From:	Ian Campbell <Ian.Campbell@...citrix.com>
To:	Peter Zijlstra <peterz@...radead.org>
CC:	Tejun Heo <tj@...nel.org>,
	Andrew Morton <akpm@...ux-foundation.org>,
	"H. Peter Anvin" <hpa@...ux.intel.com>,
	Eric Dumazet <eric.dumazet@...il.com>,
	"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH] stop_machine: fixup cut'n'paste error in stopped
 thread name

On Mon, 2011-10-03 at 17:06 +0100, Peter Zijlstra wrote:
> On Mon, 2011-10-03 at 13:01 +0100, Ian Campbell wrote:
> > Noticed this while poking around. Seems like the code was lifted a bit
> > more thoroughly from the migration thread mgmt code than the author of
> > the preceding comment intended...
> > 
> > Signed-off-by: Ian Campbell <ian.campbell@...rix.com>
> > 
> > --- a/kernel/stop_machine.c
> > +++ b/kernel/stop_machine.c
> > @@ -312,7 +312,7 @@ static int __cpuinit cpu_stop_cpu_callback(struct notifier_block *nfb,
> >  		p = kthread_create_on_node(cpu_stopper_thread,
> >  					   stopper,
> >  					   cpu_to_node(cpu),
> > -					   "migration/%d", cpu);
> > +					   "stopper/%d", cpu);
> >  		if (IS_ERR(p))
> >  			return notifier_from_errno(PTR_ERR(p));
> >  		get_task_struct(p);
> > 
> 
> IIRC it was because userspace already knew about the migration thread
> and we didn't want to confuse things further. But yeah, its not
> particularly important.

I'm not sure what knowledge userspace has of either kernel thread but
fair enough, patch withdrawn.

Ian.

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