linux-kernel - Re: [PATCH v1 0/5] PCI: Drop duplicated tracking of a pci

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite for Android: free password hash cracker in your pocket

[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]

Message-ID: <20210730174820.i6ycjyvyzxcxwxsc@pengutronix.de>
Date:   Fri, 30 Jul 2021 19:48:20 +0200
From:   Uwe Kleine-König <u.kleine-koenig@...gutronix.de>
To:     Andy Shevchenko <andriy.shevchenko@...el.com>
Cc:     Mark Rutland <mark.rutland@....com>,
        Giovanni Cabiddu <giovanni.cabiddu@...el.com>,
        Rafał Miłecki <zajec5@...il.com>,
        Peter Zijlstra <peterz@...radead.org>,
        Benjamin Herrenschmidt <benh@...nel.crashing.org>,
        Alexander Duyck <alexanderduyck@...com>,
        "H. Peter Anvin" <hpa@...or.com>,
        Sathya Prakash <sathya.prakash@...adcom.com>,
        oss-drivers@...igine.com, Oliver O'Halloran <oohall@...il.com>,
        Russell Currey <ruscur@...sell.cc>,
        Jiri Olsa <jolsa@...hat.com>,
        Boris Ostrovsky <boris.ostrovsky@...cle.com>,
        linux-perf-users@...r.kernel.org,
        Stefano Stabellini <sstabellini@...nel.org>,
        Herbert Xu <herbert@...dor.apana.org.au>,
        linux-scsi@...r.kernel.org, Michael Ellerman <mpe@...erman.id.au>,
        Ido Schimmel <idosch@...dia.com>, x86@...nel.org,
        qat-linux@...el.com,
        Alexander Shishkin <alexander.shishkin@...ux.intel.com>,
        Ingo Molnar <mingo@...hat.com>,
        Geert Uytterhoeven <geert@...ux-m68k.org>,
        linux-pci@...r.kernel.org, linux-wireless@...r.kernel.org,
        Jakub Kicinski <kuba@...nel.org>,
        Mathias Nyman <mathias.nyman@...el.com>,
        Yisen Zhuang <yisen.zhuang@...wei.com>,
        Fiona Trahe <fiona.trahe@...el.com>,
        Andrew Donnellan <ajd@...ux.ibm.com>,
        Arnd Bergmann <arnd@...db.de>,
        Konrad Rzeszutek Wilk <konrad.wilk@...cle.com>,
        Suganath Prabu Subramani 
        <suganath-prabu.subramani@...adcom.com>,
        Simon Horman <simon.horman@...igine.com>,
        Arnaldo Carvalho de Melo <acme@...nel.org>,
        Borislav Petkov <bp@...en8.de>, Michael Buesch <m@...s.ch>,
        Jiri Pirko <jiri@...dia.com>,
        Bjorn Helgaas <bhelgaas@...gle.com>,
        Namhyung Kim <namhyung@...nel.org>,
        Thomas Gleixner <tglx@...utronix.de>,
        Juergen Gross <jgross@...e.com>,
        Salil Mehta <salil.mehta@...wei.com>,
        Sreekanth Reddy <sreekanth.reddy@...adcom.com>,
        xen-devel@...ts.xenproject.org, Vadym Kochan <vkochan@...vell.com>,
        MPT-FusionLinux.pdl@...adcom.com,
        Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        linux-usb@...r.kernel.org,
        Wojciech Ziemba <wojciech.ziemba@...el.com>,
        linux-kernel@...r.kernel.org, Taras Chornyi <tchornyi@...vell.com>,
        Zhou Wang <wangzhou1@...ilicon.com>,
        linux-crypto@...r.kernel.org, kernel@...gutronix.de,
        netdev@...r.kernel.org, Frederic Barrat <fbarrat@...ux.ibm.com>,
        Paul Mackerras <paulus@...ba.org>,
        linuxppc-dev@...ts.ozlabs.org,
        "David S. Miller" <davem@...emloft.net>
Subject: Re: [PATCH v1 0/5] PCI: Drop duplicated tracking of a pci_dev's
 bound driver

Hi Andy,

On Fri, Jul 30, 2021 at 11:06:20AM +0300, Andy Shevchenko wrote:
> On Thu, Jul 29, 2021 at 10:37:35PM +0200, Uwe Kleine-König wrote:
> > struct pci_dev tracks the bound pci driver twice. This series is about
> > removing this duplication.
> > 
> > The first two patches are just cleanups. The third patch introduces a
> > wrapper that abstracts access to struct pci_dev->driver. In the next
> > patch (hopefully) all users are converted to use the new wrapper and
> > finally the fifth patch removes the duplication.
> > 
> > Note this series is only build tested (allmodconfig on several
> > architectures).
> > 
> > I'm open to restructure this series if this simplifies things. E.g. the
> > use of the new wrapper in drivers/pci could be squashed into the patch
> > introducing the wrapper. Patch 4 could be split by maintainer tree or
> > squashed into patch 3 completely.
> 
> I see only patch 4 and this cover letter...

The full series is available at

	https://lore.kernel.org/linux-pci/20210729203740.1377045-1-u.kleine-koenig@pengutronix.de/

All patches but #4 only touch drivers/pci/ (and include/linux/pci.h) and
it seemed excessive to me to send all patches to all people. It seems at
least for you I balanced this wrongly. The short version is that patch
#3 introduces

	+#define pci_driver_of_dev(pdev) ((pdev)->driver)

which allows to do the stuff done in patch #4 and then patch #5 does

	-#define pci_driver_of_dev(pdev) ((pdev)->driver)
	+#define pci_driver_of_dev(pdev) ((pdev)->dev.driver ? to_pci_driver((pdev)->dev.driver) : NULL)

plus some cleanups.

If you want I can send you a bounce (or you try

	b4 am 20210729203740.1377045-1-u.kleine-koenig@...gutronix.de

).

Best regards and thanks for caring,
Uwe

-- 
Pengutronix e.K.                           | Uwe Kleine-König            |
Industrial Linux Solutions                 | https://www.pengutronix.de/ |

Download attachment "signature.asc" of type "application/pgp-signature" (489 bytes)