From patchwork Tue Nov 17 16:58:36 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Jaegeuk Kim X-Patchwork-Id: 11912917 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=-19.0 required=3.0 tests=BAYES_00,DKIMWL_WL_HIGH, DKIM_SIGNED,DKIM_VALID,DKIM_VALID_AU,INCLUDES_CR_TRAILER,INCLUDES_PATCH, MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS,URIBL_BLOCKED,USER_AGENT_GIT 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 75824C64E7C for ; Tue, 17 Nov 2020 16:59:03 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 255F824248 for ; Tue, 17 Nov 2020 16:59:03 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (1024-bit key) header.d=kernel.org header.i=@kernel.org header.b="pqpS1I8u" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1728459AbgKQQ67 (ORCPT ); Tue, 17 Nov 2020 11:58:59 -0500 Received: from mail.kernel.org ([198.145.29.99]:43882 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1728107AbgKQQ6s (ORCPT ); Tue, 17 Nov 2020 11:58:48 -0500 Received: from localhost (unknown [104.132.1.66]) (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 0C5EA2465E; Tue, 17 Nov 2020 16:58:48 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1605632328; bh=ZTUUxWxskv0UyOHOW3ine0OD5r7+QuFzK+yjFiialjY=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=pqpS1I8ueaU03WEOkVo3+ZiGbjQIy1K/spFwpBG2OJL+4Ycn6URA52R1J/QSVOG8A hmWPfH8SoICnGA7gar0grzLiQ1Ik3dXS8mgWhtxWRZoazlNFI3Zv5V0g3wg7HWonks d0JulfjXezAXDtAtOQkyif1mxfR81iEeDWgTPrAQ= From: Jaegeuk Kim To: linux-kernel@vger.kernel.org, linux-scsi@vger.kernel.org, kernel-team@android.com Cc: cang@codeaurora.org, alim.akhtar@samsung.com, avri.altman@wdc.com, bvanassche@acm.org, martin.petersen@oracle.com, stanley.chu@mediatek.com, Jaegeuk Kim , Asutosh Das Subject: [PATCH v5 4/7] scsi: ufs: use WQ_HIGHPRI for gating work Date: Tue, 17 Nov 2020 08:58:36 -0800 Message-Id: <20201117165839.1643377-5-jaegeuk@kernel.org> X-Mailer: git-send-email 2.29.2.299.gdc1121823c-goog In-Reply-To: <20201117165839.1643377-1-jaegeuk@kernel.org> References: <20201117165839.1643377-1-jaegeuk@kernel.org> MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: linux-scsi@vger.kernel.org From: Jaegeuk Kim Must have WQ_MEM_RECLAIM ``WQ_MEM_RECLAIM`` All wq which might be used in the memory reclaim paths **MUST** have this flag set. The wq is guaranteed to have at least one execution context regardless of memory pressure. Signed-off-by: Jaegeuk Kim Reviewed-by: Asutosh Das --- drivers/scsi/ufs/ufshcd.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/scsi/ufs/ufshcd.c b/drivers/scsi/ufs/ufshcd.c index 8e696ca79b40..c45c0cff174e 100644 --- a/drivers/scsi/ufs/ufshcd.c +++ b/drivers/scsi/ufs/ufshcd.c @@ -1868,7 +1868,7 @@ static void ufshcd_init_clk_gating(struct ufs_hba *hba) snprintf(wq_name, ARRAY_SIZE(wq_name), "ufs_clk_gating_%d", hba->host->host_no); hba->clk_gating.clk_gating_workq = alloc_ordered_workqueue(wq_name, - WQ_MEM_RECLAIM); + WQ_MEM_RECLAIM | WQ_HIGHPRI); hba->clk_gating.is_enabled = true;