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=-9.8 required=3.0 tests=HEADER_FROM_DIFFERENT_DOMAINS, INCLUDES_PATCH,MAILING_LIST_MULTI,SIGNED_OFF_BY,SPF_HELO_NONE,SPF_PASS, UNPARSEABLE_RELAY,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 32FEFECE59D for ; Wed, 16 Oct 2019 03:34:29 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 044942168B for ; Wed, 16 Oct 2019 03:34:29 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S2403991AbfJPDe1 (ORCPT ); Tue, 15 Oct 2019 23:34:27 -0400 Received: from mailgw01.mediatek.com ([210.61.82.183]:46018 "EHLO mailgw01.mediatek.com" rhost-flags-OK-FAIL-OK-FAIL) by vger.kernel.org with ESMTP id S2403957AbfJPDe0 (ORCPT ); Tue, 15 Oct 2019 23:34:26 -0400 X-UUID: 6eb8cb93d15e4b618ef15009ac3b4bc1-20191016 X-UUID: 6eb8cb93d15e4b618ef15009ac3b4bc1-20191016 Received: from mtkcas08.mediatek.inc [(172.21.101.126)] by mailgw01.mediatek.com (envelope-from ) (Cellopoint E-mail Firewall v4.1.10 Build 0809 with TLS) with ESMTP id 249294150; Wed, 16 Oct 2019 11:34:20 +0800 Received: from mtkcas08.mediatek.inc (172.21.101.126) by mtkmbs01n1.mediatek.inc (172.21.101.68) with Microsoft SMTP Server (TLS) id 15.0.1395.4; Wed, 16 Oct 2019 11:34:17 +0800 Received: from localhost.localdomain (10.17.3.153) by mtkcas08.mediatek.inc (172.21.101.73) with Microsoft SMTP Server id 15.0.1395.4 via Frontend Transport; Wed, 16 Oct 2019 11:34:16 +0800 From: Yong Wu To: Matthias Brugger , Joerg Roedel , Will Deacon CC: Evan Green , Robin Murphy , Tomasz Figa , , , , , , , , Nicolas Boichat , , , , Subject: [PATCH v4 7/7] iommu/mediatek: Reduce the tlb flush timeout value Date: Wed, 16 Oct 2019 11:33:12 +0800 Message-ID: <1571196792-12382-8-git-send-email-yong.wu@mediatek.com> X-Mailer: git-send-email 1.9.1 In-Reply-To: <1571196792-12382-1-git-send-email-yong.wu@mediatek.com> References: <1571196792-12382-1-git-send-email-yong.wu@mediatek.com> MIME-Version: 1.0 Content-Type: text/plain X-MTK: N Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Reduce the tlb timeout value from 100000us to 1000us. the original value is so long that affect the multimedia performance. This is only a minor improvement rather than fixing a issue. Signed-off-by: Yong Wu --- drivers/iommu/mtk_iommu.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/iommu/mtk_iommu.c b/drivers/iommu/mtk_iommu.c index c2b7ed5..8ca2e99 100644 --- a/drivers/iommu/mtk_iommu.c +++ b/drivers/iommu/mtk_iommu.c @@ -192,7 +192,7 @@ static void mtk_iommu_tlb_flush_range_sync(unsigned long iova, size_t size, /* tlb sync */ ret = readl_poll_timeout_atomic(data->base + REG_MMU_CPE_DONE, - tmp, tmp != 0, 10, 100000); + tmp, tmp != 0, 10, 1000); if (ret) { dev_warn(data->dev, "Partial TLB flush timed out, falling back to full flush\n"); -- 1.9.1