From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-1.0 required=3.0 tests=DKIM_SIGNED,DKIM_VALID, HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS, T_DKIMWL_WL_HIGH,URIBL_BLOCKED autolearn=unavailable autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 1339FC28CC6 for ; Mon, 3 Jun 2019 21:49:15 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id D66B823A5C for ; Mon, 3 Jun 2019 21:49:14 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1559598555; bh=roe7k85B1WBARYVkgdFOauIjF/htR4Atr22VzMKxNss=; h=Date:From:To:Cc:Subject:In-Reply-To:References:List-ID:From; b=RW49sf+OVAWZNiFlBmbayBJvJdvx2BfK1iZx4z8lysgIdVytqMfCzjSlt84z6ERzL TCVL7/MpyZnvhiol5gOS9xowtaPPxQ0JZ8ITvVl2h1v+axTZ957BgomKZKGGZ5Z7e0 HMoPo43yoFIdQk0HOd7tvfH7S/mTVcXleEWIKaTU= Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1726463AbfFCVtO (ORCPT ); Mon, 3 Jun 2019 17:49:14 -0400 Received: from mail.kernel.org ([198.145.29.99]:42264 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726076AbfFCVtN (ORCPT ); Mon, 3 Jun 2019 17:49:13 -0400 Received: from akpm3.svl.corp.google.com (unknown [104.133.8.65]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPSA id 07C4A23A48; Mon, 3 Jun 2019 21:49:13 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1559598553; bh=roe7k85B1WBARYVkgdFOauIjF/htR4Atr22VzMKxNss=; h=Date:From:To:Cc:Subject:In-Reply-To:References:From; b=aHoSjDuYs+ZX4i6zuooI42FjZrBT6jsYBTiyfvLT8vIiE2+NJ4cpctPy3uJslHaoD DuOAqey1CzPQxtM6n7R7knkOHI2Tkhnh2bGu84jZ9Qjh9Br1aMTrU9/qB0sRq8fZ+B ZZBE8Z1SJPdqOtoBIHdsiJwu9Lv1ZaysBitSi/AU= Date: Mon, 3 Jun 2019 14:49:12 -0700 From: Andrew Morton To: Maninder Singh Cc: herbert@gondor.apana.org.au, davem@davemloft.net, keescook@chromium.org, gustavo@embeddedor.com, joe@perches.com, linux-crypto@vger.kernel.org, linux-kernel@vger.kernel.org, a.sahrawat@samsung.com, pankaj.m@samsung.com, v.narang@samsung.com Subject: Re: [PATCH 0/4] zstd: reduce stack usage Message-Id: <20190603144912.34e1414376e07c7b1af53205@linux-foundation.org> In-Reply-To: <1559552526-4317-1-git-send-email-maninder1.s@samsung.com> References: <1559552526-4317-1-git-send-email-maninder1.s@samsung.com> X-Mailer: Sylpheed 3.7.0 (GTK+ 2.24.31; x86_64-pc-linux-gnu) Mime-Version: 1.0 Content-Type: text/plain; charset=US-ASCII Content-Transfer-Encoding: 7bit Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Mon, 3 Jun 2019 14:32:02 +0530 Maninder Singh wrote: > This patch set reduces stack usage for zstd code, because target like ARM has > limited 8KB kernel stack, which is getting overflowed due to hight stack usage > of zstd code with call flow like: That's rather bad behaviour. I assume the patchset actually fixes this? I think I'll schedule the patchset for 5.2-rcX so that zstd is actually usable on arm in 5.2. Does that sound OK?