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Date:   Mon, 15 Apr 2019 16:29:01 +0100
From:   Willy Wolff <>
To:     "Rafael J. Wysocki" <>
Cc:     Greg Kroah-Hartman <>,
        Linux Kernel Mailing List <>
Subject: Re: [PATCH 2/2] driver core: fix statics initilisation

Thank you for your review.

I follow to write this patch.
It's not stated that is for new patches only. Moreover, suggest to
run over the entire file.

Also, uninitialised static global variable are initialised to 0 by default.
Thus, initialising driver_deferred_probe_enable to false (which is 0) is

As my knowledge, initialised global goes to .data section, and uninitialised
goes to .bss.

What does it mean for the kernel? Is this still hold?
Are performance or memory footprint of the kernel be affected?
Please, clarify my knowledge of C and kernel developement if I'm wrong.

I think should mention that information as a reminder.

Best Regards,

On Mon, Apr 15, 2019 at 10:12:43AM +0200, Rafael J. Wysocki wrote:
> On Fri, Apr 12, 2019 at 5:48 PM Willy Wolff <> wrote:
> >
> > perl scripts/ -f drivers/base/dd.c got red here:
> Please note that is for new patches.  Running it against
> the existing code base is questionable and so the results of that.

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