linux-kernel - Re: [PATCH 2/7] mce, workqueue: remove keventd

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Message-ID: <20160917075623.GB28995@nazgul.tnic>
Date:   Sat, 17 Sep 2016 09:56:23 +0200
From:   Borislav Petkov <bp@...en8.de>
To:     Tejun Heo <tj@...nel.org>
Cc:     torvalds@...ux-foundation.org, linux-kernel@...r.kernel.org,
        jiangshanlai@...il.com, akpm@...ux-foundation.org,
        kernel-team@...com, Tony Luck <tony.luck@...el.com>,
        linux-edac@...r.kernel.org
Subject: Re: [PATCH 2/7] mce, workqueue: remove keventd_up() usage

On Thu, Sep 15, 2016 at 03:30:16PM -0400, Tejun Heo wrote:
> Now that workqueue can handle work item queueing from very early
> during boot, there is no need to gate schedule_work() with
> keventd_up().  Remove it.
> 
> Signed-off-by: Tejun Heo <tj@...nel.org>
> Cc: Tony Luck <tony.luck@...el.com>
> Cc: Borislav Petkov <bp@...en8.de>
> Cc: linux-edac@...r.kernel.org
> ---
> Hello,
> 
> This change depends on an earlier workqueue patch and is followed by a
> patch to remove keventd_up().  It'd be great if it can be routed
> through the wq/for-4.9 branch.

I don't mind as long as I can call it as early as:

->x86_64_start_reservations
|->start_kernel
  |->check_bugs
     |->identify_boot_cpu
        |->identify_cpu
	   |->mcheck_cpu_init
	     |->do_machine_check
	       |->mce_report_event
	          |->mce_schedule_work

because this is the earliest callchain I can see.

Thanks.

-- 
Regards/Gruss,
    Boris.

ECO tip #101: Trim your mails when you reply.
--