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=-11.8 required=3.0 tests=BAYES_00,DKIM_INVALID, DKIM_SIGNED,HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI, MENTIONS_GIT_HOSTING,SPF_HELO_NONE,SPF_PASS,URIBL_BLOCKED,USER_AGENT_GIT autolearn=ham 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 D3C8AC433DF for ; Tue, 28 Jul 2020 09:56:05 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id A5B5B2074F for ; Tue, 28 Jul 2020 09:56:05 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=fail reason="signature verification failed" (2048-bit key) header.d=microchip.com header.i=@microchip.com header.b="QuyJxVG4" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1728378AbgG1J4E (ORCPT ); Tue, 28 Jul 2020 05:56:04 -0400 Received: from esa2.microchip.iphmx.com ([68.232.149.84]:65235 "EHLO esa2.microchip.iphmx.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1728050AbgG1J4E (ORCPT ); Tue, 28 Jul 2020 05:56:04 -0400 DKIM-Signature: v=1; a=rsa-sha256; c=simple/simple; d=microchip.com; i=@microchip.com; q=dns/txt; s=mchp; t=1595930163; x=1627466163; h=from:to:cc:subject:date:message-id:in-reply-to: references:mime-version:content-transfer-encoding; bh=KhvNa8E40sXAjwFl0sqFki4lRCuz5/nv22mAe6ewzeA=; b=QuyJxVG4Q2htSdvspev4fqfUJu2O4pFXJ3ONIT//1ZWwStisLFzEk4EJ W01uHfSiQm+my9X/JELRZ1o9mynl1CoLRTTfVsyZENLCMx3GiapqUQG30 Q6SgFciMopk6wG/Mri9k7iV93GZvjB7pRbnDQao0uR+WqdC5txNgtoobB ZMjknmVfpsd/i5Lr/0PJTUGr4jhD1WSpl/SvMJPYtHVNV2BLvZhwyoi4+ QQBBVroQe+8fOLUVsbeUrnYkNaRLLSpkNMuhRmyR++OlxArD2ts5Srh5d Xy/rWkDD+kXy4n9tc4YzCUNXdRpF9O2unXoyZNM1A44dNWE/heyPcCOEY w==; IronPort-SDR: 83JkuCKG7D1qAdNvrKfIem0ne4IQrJruMShDWB8fBEJvwBknXCGwROl1o4Azw/MHix89Y4dCKw xGo3R8g94fH8wga1HArMilEpSf0z8T/u8vvDkHd8yI44yPd//qad/Ku4pM1cCIkLZrCyqdl0cM 3UNDmgFClj7G2oOJYhNjmYtiNDikdKC8j1nmvh6lE70bU9rIfZwb881leNZhWl2WAWM1mQKTi7 AQfg/WNtbzcpgVnIOs2N3MJhT0V9FdIvKUInAlt9NGw9ojFu4tkPL8eRAroxs5O5YfM3zCdVbU 3Nk= X-IronPort-AV: E=Sophos;i="5.75,406,1589266800"; d="scan'208";a="83495961" Received: from smtpout.microchip.com (HELO email.microchip.com) ([198.175.253.82]) by esa2.microchip.iphmx.com with ESMTP/TLS/AES256-SHA256; 28 Jul 2020 02:56:02 -0700 Received: from chn-vm-ex03.mchp-main.com (10.10.85.151) by chn-vm-ex02.mchp-main.com (10.10.85.144) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256) id 15.1.1979.3; Tue, 28 Jul 2020 02:55:15 -0700 Received: from atudor-ThinkPad-T470p.amer.actel.com (10.10.115.15) by chn-vm-ex03.mchp-main.com (10.10.85.151) with Microsoft SMTP Server id 15.1.1979.3 via Frontend Transport; Tue, 28 Jul 2020 02:55:59 -0700 From: Tudor Ambarus To: Luis Alberto Herrera CC: Tudor Ambarus , Boris Brezillon , , , Richard Weinberger , "Miquel Raynal" , Jethro Beekman , Mika Westerberg , Vignesh Raghavendra Subject: Re: [PATCH] mtd: revert "spi-nor: intel: provide a range for poll_timout" Date: Tue, 28 Jul 2020 12:55:58 +0300 Message-ID: <159592990737.214287.1329265893720399161.b4-ty@microchip.com> X-Mailer: git-send-email 2.25.1 In-Reply-To: <20200610224652.64336-1-luisalberto@google.com> References: <20200610224652.64336-1-luisalberto@google.com> MIME-Version: 1.0 Content-Transfer-Encoding: 8bit Content-Type: text/plain Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Wed, 10 Jun 2020 22:46:49 +0000, Luis Alberto Herrera wrote: > This change reverts aba3a882a178: "mtd: spi-nor: intel: provide a range > for poll_timout". That change introduces a performance regression when > reading sequentially from flash. Logging calls to intel_spi_read without > this change we get: > > Start MTD read > [ 20.045527] intel_spi_read(from=1800000, len=400000) > [ 20.045527] intel_spi_read(from=1800000, len=400000) > [ 282.199274] intel_spi_read(from=1c00000, len=400000) > [ 282.199274] intel_spi_read(from=1c00000, len=400000) > [ 544.351528] intel_spi_read(from=2000000, len=400000) > [ 544.351528] intel_spi_read(from=2000000, len=400000) > End MTD read > > [...] Applied to spi-nor/next, thanks! [1/1] mtd: revert "spi-nor: intel: provide a range for poll_timout" https://git.kernel.org/mtd/c/e93a977367b2 Best regards, -- Tudor Ambarus