All of lore.kernel.org
 help / color / mirror / Atom feed
From: Tejun Heo <tj@kernel.org>
To: Len Brown <lenb@kernel.org>, "H. Peter Anvin" <hpa@zytor.com>
Cc: x86@kernel.org, linux-acpi@vger.kernel.org, linux-kernel@vger.kernel.org
Subject: Re: [PATCH] x86, acpi: Make acpi_processor_ffh_cstate_probe() use a work item instead of work_on_cpu()
Date: Mon, 17 Sep 2012 14:37:38 -0700	[thread overview]
Message-ID: <20120917213738.GM18677@google.com> (raw)
In-Reply-To: <20120824002643.GA21325@google.com>

On Thu, Aug 23, 2012 at 05:26:43PM -0700, Tejun Heo wrote:
> Workqueue is guaranteed to be available on the target CPU by the time
> acpi_processor_ffh_cstate_probe() is invoked for it.  There's no
> reason to use costly work_on_cpu() which involves creating and tearing
> down a full kthread on each invocation to execute the probing function
> on the target CPU.  Use a work item instead.
> 
> Tested and works as expected.
> 
> Signed-off-by: Tejun Heo <tj@kernel.org>

Please forget about this patch (doesn't seem like it has been applied
yet).  Planning on reimplementing work_on_cpu() using system_wq
instead.

Thanks.

-- 
tejun

      reply	other threads:[~2012-09-17 21:37 UTC|newest]

Thread overview: 2+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2012-08-24  0:26 [PATCH] x86, acpi: Make acpi_processor_ffh_cstate_probe() use a work item instead of work_on_cpu() Tejun Heo
2012-09-17 21:37 ` Tejun Heo [this message]

Reply instructions:

You may reply publicly to this message via plain-text email
using any one of the following methods:

* Save the following mbox file, import it into your mail client,
  and reply-to-all from there: mbox

  Avoid top-posting and favor interleaved quoting:
  https://en.wikipedia.org/wiki/Posting_style#Interleaved_style

* Reply using the --to, --cc, and --in-reply-to
  switches of git-send-email(1):

  git send-email \
    --in-reply-to=20120917213738.GM18677@google.com \
    --to=tj@kernel.org \
    --cc=hpa@zytor.com \
    --cc=lenb@kernel.org \
    --cc=linux-acpi@vger.kernel.org \
    --cc=linux-kernel@vger.kernel.org \
    --cc=x86@kernel.org \
    /path/to/YOUR_REPLY

  https://kernel.org/pub/software/scm/git/docs/git-send-email.html

* If your mail client supports setting the In-Reply-To header
  via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line before the message body. 
This is an external index of several public inboxes,
see mirroring instructions on how to clone and mirror
all data and code used by this external index.