From patchwork Fri Nov 25 13:10:31 2016 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Mark Brown X-Patchwork-Id: 9447563 Return-Path: Received: from mail.wl.linuxfoundation.org (pdx-wl-mail.web.codeaurora.org [172.30.200.125]) by pdx-korg-patchwork.web.codeaurora.org (Postfix) with ESMTP id 1CA646071C for ; Fri, 25 Nov 2016 13:13:33 +0000 (UTC) Received: from mail.wl.linuxfoundation.org (localhost [127.0.0.1]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id 0D7A027F85 for ; Fri, 25 Nov 2016 13:13:33 +0000 (UTC) Received: by mail.wl.linuxfoundation.org (Postfix, from userid 486) id 0255127F88; Fri, 25 Nov 2016 13:13:32 +0000 (UTC) X-Spam-Checker-Version: SpamAssassin 3.3.1 (2010-03-16) on pdx-wl-mail.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-6.9 required=2.0 tests=BAYES_00,RCVD_IN_DNSWL_HI autolearn=ham version=3.3.1 Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id DB25628068 for ; Fri, 25 Nov 2016 13:13:24 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1754631AbcKYNMO (ORCPT ); Fri, 25 Nov 2016 08:12:14 -0500 Received: from mezzanine.sirena.org.uk ([106.187.55.193]:44950 "EHLO mezzanine.sirena.org.uk" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1753197AbcKYNLh (ORCPT ); Fri, 25 Nov 2016 08:11:37 -0500 Received: from [2001:470:1f1d:6b5::3] (helo=debutante) by mezzanine.sirena.org.uk with esmtpsa (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.84_2) (envelope-from ) id 1cAGGw-0005bf-76; Fri, 25 Nov 2016 13:10:36 +0000 Received: from broonie by debutante with local (Exim 4.87) (envelope-from ) id 1cAGGt-0005I7-G0; Fri, 25 Nov 2016 13:10:31 +0000 From: Mark Brown To: Gao Pan Cc: Mark Brown , broonie@kernel.org, linux-spi@vger.kernel.org, pandy.gao@nxp.com, frank.li@nxp.com, fugang.duan@nxp.com In-Reply-To: <1479985484-6641-1-git-send-email-pandy.gao@nxp.com> Message-Id: Date: Fri, 25 Nov 2016 13:10:31 +0000 X-SA-Exim-Connect-IP: 2001:470:1f1d:6b5::3 X-SA-Exim-Mail-From: broonie@sirena.org.uk Subject: Applied "spi: imx: replace schedule() with cond_resched()" to the spi tree X-SA-Exim-Version: 4.2.1 (built Mon, 26 Dec 2011 16:24:06 +0000) X-SA-Exim-Scanned: No (on mezzanine.sirena.org.uk); Unknown failure Sender: linux-spi-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-spi@vger.kernel.org X-Virus-Scanned: ClamAV using ClamSMTP The patch spi: imx: replace schedule() with cond_resched() has been applied to the spi tree at git://git.kernel.org/pub/scm/linux/kernel/git/broonie/spi.git All being well this means that it will be integrated into the linux-next tree (usually sometime in the next 24 hours) and sent to Linus during the next merge window (or sooner if it is a bug fix), however if problems are discovered then the patch may be dropped or reverted. You may get further e-mails resulting from automated or manual testing and review of the tree, please engage with people reporting problems and send followup patches addressing any issues that are reported if needed. If any updates are required or you are submitting further changes they should be sent as incremental updates against current git, existing patches will not be replaced. Please add any relevant lists and maintainers to the CCs when replying to this mail. Thanks, Mark From 14de3918eacfc624023775c319e85e6597514195 Mon Sep 17 00:00:00 2001 From: Gao Pan Date: Thu, 24 Nov 2016 19:04:42 +0800 Subject: [PATCH] spi: imx: replace schedule() with cond_resched() It's more rational that just do the schedule when necessary other than do it every time. Thus, it's better to replace schedule() with cond_resched() in fsl_lpspi_txfifo_empty(), which contributes to saving cpu time. Signed-off-by: Gao Pan Signed-off-by: Mark Brown --- drivers/spi/spi-fsl-lpspi.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/spi/spi-fsl-lpspi.c b/drivers/spi/spi-fsl-lpspi.c index 18a269d2e2f8..539c971b9f05 100644 --- a/drivers/spi/spi-fsl-lpspi.c +++ b/drivers/spi/spi-fsl-lpspi.c @@ -176,7 +176,7 @@ static int fsl_lpspi_txfifo_empty(struct fsl_lpspi_data *fsl_lpspi) dev_dbg(fsl_lpspi->dev, "txfifo empty timeout\n"); return -ETIMEDOUT; } - schedule(); + cond_resched(); } while (txcnt);