Received-SPF: pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 2620:137:e000::1:20 as permitted sender) client-ip=2620:137:e000::1:20;
Message-ID: <6d3486ef-db9d-6b53-096e-00c961a5424b@igalia.com>
Date:   Fri, 23 Dec 2022 19:27:24 -0300
MIME-Version: 1.0
User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:102.0) Gecko/20100101
 Thunderbird/102.6.0
Subject: Re: [PATCH] drm/tests: reduce drm_mm_test stack usage
Content-Language: en-US
To:     Arnd Bergmann <arnd@kernel.org>, David Airlie <airlied@gmail.com>,
        Daniel Vetter <daniel@ffwll.ch>
Cc:     Arnd Bergmann <arnd@arndb.de>, Tom Rix <trix@redhat.com>,
        Daniel Latypov <dlatypov@google.com>, llvm@lists.linux.dev,
        Nick Desaulniers <ndesaulniers@google.com>,
        Javier Martinez Canillas <javierm@redhat.com>,
        dri-devel@lists.freedesktop.org, linux-kernel@vger.kernel.org,
        Nathan Chancellor <nathan@kernel.org>,
        =?UTF-8?Q?Ma=c3=adra_Canal?= <maira.canal@usp.br>
References: <20221215163511.266214-1-arnd@kernel.org>
From:   =?UTF-8?Q?Ma=c3=adra_Canal?= <mcanal@igalia.com>
In-Reply-To: <20221215163511.266214-1-arnd@kernel.org>
Content-Type: text/plain; charset=UTF-8; format=flowed
Content-Transfer-Encoding: 8bit
Precedence: bulk

On 12/15/22 13:34, Arnd Bergmann wrote:
> From: Arnd Bergmann <arnd@arndb.de>
> 
> The check_reserve_boundaries function uses a lot of kernel stack,
> and it gets inlined by clang, which makes __drm_test_mm_reserve
> use even more of it, to the point of hitting the warning limit:
> 
> drivers/gpu/drm/tests/drm_mm_test.c:344:12: error: stack frame size (1048) exceeds limit (1024) in '__drm_test_mm_reserve' [-Werror,-Wframe-larger-than]
> 
> When building with gcc, this does not happen, but the structleak
> plugin can similarly increase the stack usage and needs to be
> disabled, as we do for all other kunit users.
> 
> Signed-off-by: Arnd Bergmann <arnd@arndb.de>

Applied it to drm-misc-next-fixes with the small checkpatch fix.

Best Regards,
- Maíra Canal