netdev - Re: [PATCH v2 09/11] drm: Convert open-coded yes/no strings to yesno()

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: Windows password security audit tool. GUI, reports in PDF.

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

Message-ID: <CAHp75Vd+TmShx==d_JHZUu0Q-9X7CmZEOFdKnSrcRKs81Gxn3g@mail.gmail.com>
Date:   Wed, 26 Jan 2022 12:12:50 +0200
From:   Andy Shevchenko <andy.shevchenko@...il.com>
To:     Lucas De Marchi <lucas.demarchi@...el.com>
Cc:     linux-kernel@...r.kernel.org, intel-gfx@...ts.freedesktop.org,
        dri-devel@...ts.freedesktop.org, amd-gfx@...ts.freedesktop.org,
        linux-security-module@...r.kernel.org,
        nouveau@...ts.freedesktop.org, netdev@...r.kernel.org,
        Alex Deucher <alexander.deucher@....com>,
        Andrew Morton <akpm@...ux-foundation.org>,
        Andy Shevchenko <andriy.shevchenko@...ux.intel.com>,
        Ben Skeggs <bskeggs@...hat.com>,
        Christian König <christian.koenig@....com>,
        Chris Wilson <chris@...is-wilson.co.uk>,
        Daniel Vetter <daniel@...ll.ch>,
        David Airlie <airlied@...ux.ie>,
        "David S. Miller" <davem@...emloft.net>,
        Emma Anholt <emma@...olt.net>,
        Francis Laniel <laniel_francis@...vacyrequired.com>,
        Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        Harry Wentland <harry.wentland@....com>,
        Jakub Kicinski <kuba@...nel.org>,
        Jani Nikula <jani.nikula@...ux.intel.com>,
        Joonas Lahtinen <joonas.lahtinen@...ux.intel.com>,
        Julia Lawall <julia.lawall@...6.fr>,
        Kentaro Takeda <takedakn@...data.co.jp>,
        Leo Li <sunpeng.li@....com>, Petr Mladek <pmladek@...e.com>,
        Rahul Lakkireddy <rahul.lakkireddy@...lsio.com>,
        Raju Rangoju <rajur@...lsio.com>,
        Rasmus Villemoes <linux@...musvillemoes.dk>,
        Rodrigo Vivi <rodrigo.vivi@...el.com>,
        Sakari Ailus <sakari.ailus@...ux.intel.com>,
        Sergey Senozhatsky <sergey.senozhatsky@...il.com>,
        Steven Rostedt <rostedt@...dmis.org>,
        Vishal Kulkarni <vishal@...lsio.com>
Subject: Re: [PATCH v2 09/11] drm: Convert open-coded yes/no strings to yesno()

On Wed, Jan 26, 2022 at 11:39 AM Lucas De Marchi
<lucas.demarchi@...el.com> wrote:
>
> linux/string_helpers.h provides a helper to return "yes"/"no" strings.
> Replace the open coded versions with str_yes_no(). The places were
> identified with the following semantic patch:
>
>         @@
>         expression b;
>         @@
>
>         - b ? "yes" : "no"
>         + str_yes_no(b)
>
> Then the includes were added, so we include-what-we-use, and parenthesis
> adjusted in drivers/gpu/drm/v3d/v3d_debugfs.c. After the conversion we
> still see the same binary sizes:
>
>    text    data     bss     dec     hex filename
>   51149    3295     212   54656    d580 virtio/virtio-gpu.ko.old
>   51149    3295     212   54656    d580 virtio/virtio-gpu.ko
> 1441491   60340     800 1502631  16eda7 radeon/radeon.ko.old
> 1441491   60340     800 1502631  16eda7 radeon/radeon.ko
> 6125369  328538   34000 6487907  62ff63 amd/amdgpu/amdgpu.ko.old
> 6125369  328538   34000 6487907  62ff63 amd/amdgpu/amdgpu.ko
>  411986   10490    6176  428652   68a6c drm.ko.old
>  411986   10490    6176  428652   68a6c drm.ko
>   98129    1636     264  100029   186bd dp/drm_dp_helper.ko.old
>   98129    1636     264  100029   186bd dp/drm_dp_helper.ko
> 1973432  109640    2352 2085424  1fd230 nouveau/nouveau.ko.old
> 1973432  109640    2352 2085424  1fd230 nouveau/nouveau.ko

This probably won't change for modules, but if you compile in the
linker may try to optimize it. Would be nice to see the old-new for
`make allyesconfig` or equivalent.

...

>         seq_printf(m, "\tDP branch device present: %s\n",
> -                  branch_device ? "yes" : "no");
> +                  str_yes_no(branch_device));

Can it be now on one line? Same Q for all similar cases in the entire series.

-- 
With Best Regards,
Andy Shevchenko