From: Samuel Thibault <samuel.thibault@ens-lyon.org>
To: Ingo Molnar <mingo@elte.hu>
Cc: linux-kernel@vger.kernel.org
Subject: Re: [PATCH] Fix initialization of runqueues
Date: Wed, 2 Aug 2006 18:57:42 +0200 [thread overview]
Message-ID: <20060802165742.GI4460@implementation.labri.fr> (raw)
In-Reply-To: <20060802152419.GA31970@elte.hu>
Ingo Molnar, le Wed 02 Aug 2006 17:24:19 +0200, a écrit :
>
> * Samuel Thibault <samuel.thibault@ens-lyon.org> wrote:
>
> > Hi,
> >
> > There's an odd thing about the nr_active field in arrays of
> > runqueue_t: it is actually never initialized to 0!... This doesn't
> > yet trigger a bug probably because the way runqueues are allocated
> > make it so that it is already initialized to 0, but that's not a safe
> > way. Here is a patch:
>
> we do rely on zero initialization of bss (and percpu) data in a number
> of places.
The rest of runqueue initialization doesn't rely on that, and as
a result people might think that it is safe to allocate runqueues
dynamically.
Samuel
next prev parent reply other threads:[~2006-08-02 16:57 UTC|newest]
Thread overview: 5+ messages / expand[flat|nested] mbox.gz Atom feed top
2006-08-02 12:27 [PATCH] Fix initialization of runqueues Samuel Thibault
2006-08-02 15:24 ` Ingo Molnar
2006-08-02 16:57 ` Samuel Thibault [this message]
2006-08-03 15:07 ` Steven Rostedt
2006-08-03 18:26 ` Samuel Thibault
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