From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from smtp.kernel.org (aws-us-west-2-korg-mail-1.web.codeaurora.org [10.30.226.201]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 2AD5B8F5B; Wed, 25 Jun 2025 10:41:26 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=10.30.226.201 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1750848087; cv=none; b=qLcBdvOLD2Fq3nzGxhJXFCcuEjUH7Th3a6/MkhaF1CuIrtVQRoPb1lWG7lYZ2EhtJuJ9x8ZUv6PqovVZD0Pvdftm3tuMBCbgwc1KKOD+1upLLfuAQTNEM6AvJMNlkHld6LFnJ0j+0AzSm0qdgdV26aILOXPmp6IM9Rze2ux/RkM= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1750848087; c=relaxed/simple; bh=gTVevN5N5fmOhyPXlACLfhqUIaGJGrmCUJ+fYm8dgQg=; h=From:To:Cc:In-Reply-To:References:Subject:Message-Id:Date: MIME-Version:Content-Type; b=bbTei54c47vfZy2Rc4m500SOzKmmJv4HXhUbFc4Qj9X8CH/HesS5lrDm9igDXWGVkj4XQLgnSSn+OPmJ9kYTL9C5q7aF1cQ+bSq7Qyb9C6owElTjOUln7+qdYmVTs4icQerUJPN8W5+7/tCeanOoa/HX0Co6s8PRqggoE9JpA6c= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b=XUFCCVoB; arc=none smtp.client-ip=10.30.226.201 Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b="XUFCCVoB" Received: by smtp.kernel.org (Postfix) with ESMTPSA id 0814FC4CEEA; Wed, 25 Jun 2025 10:41:25 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1750848086; bh=gTVevN5N5fmOhyPXlACLfhqUIaGJGrmCUJ+fYm8dgQg=; h=From:To:Cc:In-Reply-To:References:Subject:Date:From; b=XUFCCVoBfR7O7dIsA0snzmR7ajXkbBz953KglAMmxSnti7n7PYMA1LYCXfAYUYuUg uMD3doNvnDFeAr+CUuirs9XWoUAsLCWhnnFOPZrX3gbf6/fZxt+xqGiW+odmjojKJb wksXfuPWnOHEFYXQJX0VUbt3dzyUzAChfKsRCR/Wpk1wyLwQDR2vaL6yZsVIRI3OnL Mt4jj/613E4ANzEvO0JY0vLzyQ88CXlX0/bf1okMQNoeO/IVPb+iU228N90i5fg+NX Diy0HgW347TDM6Zl6JmJFu0cI15uC5XVBNyFxGSCpaAdmFVhDILdzJ/KZ1V8x/MRry TEzsbqbmFtr8A== From: Leon Romanovsky To: Jason Gunthorpe , Arnd Bergmann Cc: Arnd Bergmann , Chiara Meiohas , Mark Zhang , Michael Guralnik , linux-rdma@vger.kernel.org, linux-kernel@vger.kernel.org In-Reply-To: <20250620113335.3776965-1-arnd@kernel.org> References: <20250620113335.3776965-1-arnd@kernel.org> Subject: Re: [PATCH] RDMA/core: reduce stack using in nldev_stat_get_doit() Message-Id: <175084808302.620355.8744295923140537631.b4-ty@kernel.org> Date: Wed, 25 Jun 2025 06:41:23 -0400 Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: 7bit X-Mailer: b4 0.15-dev-37811 On Fri, 20 Jun 2025 13:33:26 +0200, Arnd Bergmann wrote: > In the s390 defconfig, gcc-10 and earlier end up inlining three functions > into nldev_stat_get_doit(), and each of them uses some 600 bytes of stack. > > The result is a function with an overly large stack frame and a warning: > > drivers/infiniband/core/nldev.c:2466:1: error: the frame size of 1720 bytes is larger than 1280 bytes [-Werror=frame-larger-than=] > > [...] Applied, thanks! [1/1] RDMA/core: reduce stack using in nldev_stat_get_doit() https://git.kernel.org/rdma/rdma/c/43163f4c30f94d Best regards, -- Leon Romanovsky