linux-kernel - Re: [PATCH] sched, numa: Use {cpu, pid} to create task groups for shared faults

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]

Date:	Wed, 31 Jul 2013 18:05:53 +0200
From:	Peter Zijlstra <peterz@...radead.org>
To:	Don Morris <don.morris@...com>
Cc:	Mel Gorman <mgorman@...e.de>,
	Srikar Dronamraju <srikar@...ux.vnet.ibm.com>,
	Ingo Molnar <mingo@...nel.org>,
	Andrea Arcangeli <aarcange@...hat.com>,
	Johannes Weiner <hannes@...xchg.org>,
	Linux-MM <linux-mm@...ck.org>,
	LKML <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH] sched, numa: Use {cpu, pid} to create task groups for
 shared faults

On Wed, Jul 31, 2013 at 11:45:09AM -0400, Don Morris wrote:
> > +
> > +static void task_numa_free(struct task_struct *p)
> > +{
> > +	kfree(p->numa_faults);
> > +	if (p->numa_group) {
> > +		struct numa_group *grp = p->numa_group;
> 
> See below.
> 
> > +		int i;
> > +
> > +		for (i = 0; i < 2*nr_node_ids; i++)
> > +			atomic_long_sub(p->numa_faults[i], &grp->faults[i]);
> > +
> > +		spin_lock(&p->numa_lock);
> > +		spin_lock(&group->lock);
> > +		list_del(&p->numa_entry);
> > +		spin_unlock(&group->lock);
> > +		rcu_assign_pointer(p->numa_group, NULL);
> > +		put_numa_group(grp);
> 
> So is the local variable group or grp here? Got to be one or the
> other to compile...

Feh, compiling is soooo overrated! :-)

Thanks.
--
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@...r.kernel.org
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Please read the FAQ at  http://www.tux.org/lkml/