From: Tejun Heo <tj-DgEjT+Ai2ygdnm+yROfE0A@public.gmane.org>
To: Vivek Goyal <vgoyal-H+wXaHxf7aLQT0dZR+AlfA@public.gmane.org>
Cc: axboe-tSWWG44O7X1aa/9Udqfwiw@public.gmane.org,
ctalbott-hpIqsD4AKlfQT0dZR+AlfA@public.gmane.org,
rni-hpIqsD4AKlfQT0dZR+AlfA@public.gmane.org,
linux-kernel-u79uwXL29TY76Z2rM5mHXA@public.gmane.org,
cgroups-u79uwXL29TY76Z2rM5mHXA@public.gmane.org,
containers-cunTk1MwBs9QetFLy7KEm3xJsTq8ys+cHZ5vskTnxNA@public.gmane.org
Subject: Re: [PATCH 5/8] blkcg: make sure blkg_lookup() returns %NULL if @q is bypassing
Date: Fri, 13 Apr 2012 10:28:41 -0700 [thread overview]
Message-ID: <20120413172841.GC12233@google.com> (raw)
In-Reply-To: <20120413172336.GF26383-H+wXaHxf7aLQT0dZR+AlfA@public.gmane.org>
On Fri, Apr 13, 2012 at 01:23:36PM -0400, Vivek Goyal wrote:
> I think now synchronize_rcu() has become part of cfq_init_queue()
> effectively and that will slow down boot. In the past I had to remove
> it.
Eh... crap. You're right. Forgot about that. Maybe we need to
special case initial queue setup. I'll look into it.
Thanks.
--
tejun
WARNING: multiple messages have this Message-ID (diff)
From: Tejun Heo <tj@kernel.org>
To: Vivek Goyal <vgoyal@redhat.com>
Cc: axboe@kernel.dk, ctalbott@google.com, rni@google.com,
linux-kernel@vger.kernel.org, cgroups@vger.kernel.org,
containers@lists.linux-foundation.org
Subject: Re: [PATCH 5/8] blkcg: make sure blkg_lookup() returns %NULL if @q is bypassing
Date: Fri, 13 Apr 2012 10:28:41 -0700 [thread overview]
Message-ID: <20120413172841.GC12233@google.com> (raw)
In-Reply-To: <20120413172336.GF26383@redhat.com>
On Fri, Apr 13, 2012 at 01:23:36PM -0400, Vivek Goyal wrote:
> I think now synchronize_rcu() has become part of cfq_init_queue()
> effectively and that will slow down boot. In the past I had to remove
> it.
Eh... crap. You're right. Forgot about that. Maybe we need to
special case initial queue setup. I'll look into it.
Thanks.
--
tejun
next prev parent reply other threads:[~2012-04-13 17:28 UTC|newest]
Thread overview: 49+ messages / expand[flat|nested] mbox.gz Atom feed top
2012-04-12 23:29 [PATCHSET] block: per-queue policy activation Tejun Heo
2012-04-12 23:29 ` Tejun Heo
[not found] ` <1334273380-30233-1-git-send-email-tj-DgEjT+Ai2ygdnm+yROfE0A@public.gmane.org>
2012-04-12 23:29 ` [PATCH 1/8] blkcg: kill blkio_list and replace blkio_list_lock with a mutex Tejun Heo
2012-04-12 23:29 ` Tejun Heo
[not found] ` <1334273380-30233-2-git-send-email-tj-DgEjT+Ai2ygdnm+yROfE0A@public.gmane.org>
2012-04-13 13:32 ` Vivek Goyal
2012-04-13 13:32 ` Vivek Goyal
[not found] ` <20120413133226.GB26383-H+wXaHxf7aLQT0dZR+AlfA@public.gmane.org>
2012-04-13 16:55 ` Tejun Heo
2012-04-13 16:55 ` Tejun Heo
2012-04-13 16:55 ` Tejun Heo
2012-04-13 13:32 ` Vivek Goyal
2012-04-12 23:29 ` [PATCH 2/8] blkcg: use @pol instead of @plid in update_root_blkg_pd() and blkcg_print_blkgs() Tejun Heo
2012-04-12 23:29 ` Tejun Heo
2012-04-12 23:29 ` [PATCH 3/8] blkcg: remove static policy ID enums Tejun Heo
2012-04-12 23:29 ` Tejun Heo
2012-04-12 23:29 ` [PATCH 4/8] blkcg: make blkg_conf_prep() take @pol and return with queue lock held Tejun Heo
2012-04-12 23:29 ` Tejun Heo
2012-04-12 23:29 ` [PATCH 5/8] blkcg: make sure blkg_lookup() returns %NULL if @q is bypassing Tejun Heo
2012-04-12 23:29 ` Tejun Heo
[not found] ` <1334273380-30233-6-git-send-email-tj-DgEjT+Ai2ygdnm+yROfE0A@public.gmane.org>
2012-04-13 16:00 ` Vivek Goyal
2012-04-13 16:00 ` Vivek Goyal
[not found] ` <20120413160053.GE26383-H+wXaHxf7aLQT0dZR+AlfA@public.gmane.org>
2012-04-13 17:03 ` Tejun Heo
2012-04-13 17:03 ` Tejun Heo
[not found] ` <20120413170334.GB12233-hpIqsD4AKlfQT0dZR+AlfA@public.gmane.org>
2012-04-13 17:23 ` Vivek Goyal
2012-04-13 17:23 ` Vivek Goyal
[not found] ` <20120413172336.GF26383-H+wXaHxf7aLQT0dZR+AlfA@public.gmane.org>
2012-04-13 17:28 ` Tejun Heo
2012-04-13 17:28 ` Tejun Heo [this message]
2012-04-13 17:28 ` Tejun Heo
2012-04-16 22:41 ` Paul E. McKenney
2012-04-16 22:41 ` Paul E. McKenney
2012-04-13 17:23 ` Vivek Goyal
2012-04-12 23:29 ` [PATCH 6/8] blkcg: add request_queue->root_blkg Tejun Heo
2012-04-12 23:29 ` Tejun Heo
2012-04-12 23:29 ` Tejun Heo
2012-04-12 23:29 ` [PATCH 7/8] blkcg: implement per-queue policy activation Tejun Heo
2012-04-12 23:29 ` Tejun Heo
[not found] ` <1334273380-30233-8-git-send-email-tj-DgEjT+Ai2ygdnm+yROfE0A@public.gmane.org>
2012-04-13 15:21 ` Vivek Goyal
2012-04-13 15:21 ` Vivek Goyal
[not found] ` <20120413152122.GC26383-H+wXaHxf7aLQT0dZR+AlfA@public.gmane.org>
2012-04-13 15:23 ` Vivek Goyal
2012-04-13 15:23 ` Vivek Goyal
2012-04-13 15:23 ` Vivek Goyal
2012-04-13 15:21 ` Vivek Goyal
2012-04-13 18:12 ` Vivek Goyal
2012-04-13 18:12 ` Vivek Goyal
2012-04-13 18:12 ` Vivek Goyal
[not found] ` <20120413181257.GG26383-H+wXaHxf7aLQT0dZR+AlfA@public.gmane.org>
2012-04-13 18:17 ` Tejun Heo
2012-04-13 18:17 ` Tejun Heo
2012-04-13 18:17 ` Tejun Heo
2012-04-12 23:29 ` [PATCH 8/8] blkcg: drop stuff unused after per-queue policy activation update Tejun Heo
2012-04-12 23:29 ` Tejun Heo
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