linux-kernel - Re: [PATCH v3 2/2] sched: Handle on_list ancestor in list_add_leaf_cfs

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:	Tue, 23 Aug 2011 20:56:43 +0200
From:	Peter Zijlstra <peterz@...radead.org>
To:	"Jan H." Schönherr <schnhrr@...tu-berlin.de>
Cc:	Ingo Molnar <mingo@...e.hu>, Paul Turner <pjt@...gle.com>,
	Dipankar Sarma <dipankar@...ibm.com>,
	"Paul E. McKenney" <paulmck@...ux.vnet.ibm.com>,
	linux-kernel@...r.kernel.org
Subject: Re: [PATCH v3 2/2] sched: Handle on_list ancestor in
 list_add_leaf_cfs_rq()

On Tue, 2011-08-23 at 20:53 +0200, Peter Zijlstra wrote:
>         LIST_HEAD(leaf_queue);
> 
>         for_each_sched_entity(se) {
>                 if (se->on_rq)
>                         break;
>                 cfs_rq = cfs_rq_of(se);
>                 enqueue_entity(cfs_rq, se, flags);
>                 flags = ENQUEUE_WAKEUP;
>                 if (cfs_rq->nr_running == 1)
>                         leaf_add_queue(cfs_rq, &leaf_queue);
>         }
>         /* XXX does ->on_rq imply ->on_list ? */
>         if (se->on_list)
>                 leaf_splice_queue(cfs_rq, &leaf_queue); 

Bah, se can be NULL here, still needing some extra foo.
--
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/