From patchwork Mon Oct 26 19:51:22 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Jaegeuk Kim X-Patchwork-Id: 287061 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=-13.1 required=3.0 tests=BAYES_00,DKIMWL_WL_HIGH, DKIM_SIGNED, DKIM_VALID, DKIM_VALID_AU, INCLUDES_PATCH, MAILING_LIST_MULTI, SIGNED_OFF_BY,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 518ECC4363A for ; Mon, 26 Oct 2020 19:51:38 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 0527E2076D for ; Mon, 26 Oct 2020 19:51:37 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1603741898; bh=GdnDg70I0FbOI6oD/xlNrYATDeYPhO+xxXd+jEd3AtI=; h=From:To:Cc:Subject:Date:In-Reply-To:References:List-ID:From; b=kzcEYq6HYl8DpQ9AnREMqIi0KDsp4jyl4qaGl9Cbl/fGcgATzzuOdu5p6aQcYBJvC HIr4TljBWwlf0BH3HFzg/JyOgmwdWu/DKOVByEp8eNafVMe5MpdaoE/wIjxpGqobrP 3Hoab6ysAaPqAc/nLVCEF+DJw9Jm4N2EGU1glH8A= Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1728866AbgJZTvh (ORCPT ); Mon, 26 Oct 2020 15:51:37 -0400 Received: from mail.kernel.org ([198.145.29.99]:47568 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1728896AbgJZTvd (ORCPT ); Mon, 26 Oct 2020 15:51:33 -0400 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 784F621BE5; Mon, 26 Oct 2020 19:51:32 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1603741892; bh=GdnDg70I0FbOI6oD/xlNrYATDeYPhO+xxXd+jEd3AtI=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=uQJ0NaESczCCWEHj2EONZjmKhk/HmXB32QzJ65AVbUBk31drs7KshH+2GlyzKGGT5 mKW3VfxEiGBYFtxBZsttsuestgFrxNaWHXJRZygnUbUgJoBtXY0aE6Y3TRMK/LfYaJ JhWnHFfBTqqTvY0GfLvVVpvjRkOA3pov7gcEUBg4= 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, Jaegeuk Kim , Asutosh Das Subject: [PATCH v4 3/5] scsi: ufs: use WQ_HIGHPRI for gating work Date: Mon, 26 Oct 2020 12:51:22 -0700 Message-Id: <20201026195124.363096-4-jaegeuk@kernel.org> X-Mailer: git-send-email 2.29.0.rc1.297.gfa9743e501-goog In-Reply-To: <20201026195124.363096-1-jaegeuk@kernel.org> References: <20201026195124.363096-1-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;