linux-kernel - Re: [PATCH v2 2/2] module: Merge same-name module load requests

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Date:   Mon, 21 Nov 2022 12:27:10 -0800
From:   Luis Chamberlain <mcgrof@...nel.org>
To:     David Hildenbrand <david@...hat.com>
Cc:     Petr Pavlu <petr.pavlu@...e.com>,
        Prarit Bhargava <prarit@...hat.com>, pmladek@...e.com,
        linux-modules@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH v2 2/2] module: Merge same-name module load requests

On Mon, Nov 21, 2022 at 08:50:11PM +0100, David Hildenbrand wrote:
> On 21.11.22 20:03, Luis Chamberlain wrote:
> > On Mon, Nov 21, 2022 at 05:00:49PM +0100, Petr Pavlu wrote:
> > > On 11/16/22 17:03, Prarit Bhargava wrote:
> > > > On 11/15/22 14:29, Luis Chamberlain wrote:
> > > > > On Mon, Nov 14, 2022 at 04:45:05PM +0100, David Hildenbrand wrote:
> > > > > > Note that I don't think the issue I raised is due to 6e6de3dee51a.
> > > > > > I don't have the machine at hand right now. But, again, I doubt this will
> > > > > > fix it.
> > > > > 
> > > > > There are *more* modules processed after that commit. That's all. So
> > > > > testing would be appreciated.
> > > > > 
> > > > 
> > > > Can anyone tell us if
> > > > 
> > > > https://lore.kernel.org/linux-pm/20221102195957.82871-1-stuart.w.hayes@gmail.com/
> > > > 
> > > > resolves the module loading delay problem?
> > > 
> > > This patch unfortunately makes no difference on my test system. In my case,
> > > the kernel has already intel_pstate loaded when udev starts inserting a burst
> > > of acpi_cpufreq modules. It then causes the init function acpi_cpufreq_init()
> > > to immediately return once the check cpufreq_get_current_driver() fails. The
> > > code modified by the patch is not reached at all.
> > 
> > To be clear I don't care about the patch mentioned in the above URL, I care
> > about this:
> > 
> > https://lkml.kernel.org/r/d0bc50e3-0e42-311b-20ed-7538bb918c5b@suse.com
> > 
> > David was this the on you tested too?
> 
> Yes, that's the one I tried without luck.

OK thanks. I'm just trying to sort out the regression first before we go
out and fix another issue. We will chase that issue down though and I
hav some other ideas to help with this further too.

  Luis