Message ID | 1571035101-4213-8-git-send-email-yong.wu@mediatek.com (mailing list archive) |
---|---|
State | New, archived |
Headers | show
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Mon, 14 Oct 2019 14:39:26 +0800 From: Yong Wu <yong.wu@mediatek.com> To: Matthias Brugger <matthias.bgg@gmail.com>, Joerg Roedel <joro@8bytes.org>, Will Deacon <will.deacon@arm.com> Subject: [PATCH v3 7/7] iommu/mediatek: Reduce the tlb flush timeout value Date: Mon, 14 Oct 2019 14:38:21 +0800 Message-ID: <1571035101-4213-8-git-send-email-yong.wu@mediatek.com> X-Mailer: git-send-email 1.9.1 In-Reply-To: <1571035101-4213-1-git-send-email-yong.wu@mediatek.com> References: <1571035101-4213-1-git-send-email-yong.wu@mediatek.com> MIME-Version: 1.0 X-TM-SNTS-SMTP: 48748A048541F6C83B435A62F409553627F6DD0F6DA3E74D7B897F19B48032702000:8 X-MTK: N X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20191013_234937_717609_28AD965B X-CRM114-Status: GOOD ( 11.28 ) X-Spam-Score: 0.0 (/) X-Spam-Report: SpamAssassin version 3.4.2 on bombadil.infradead.org summary: Content analysis details: (0.0 points) pts rule name description ---- ---------------------- -------------------------------------------------- -0.0 RCVD_IN_DNSWL_NONE RBL: Sender listed at https://www.dnswl.org/, no trust [216.200.240.184 listed in list.dnswl.org] -0.0 SPF_PASS SPF: sender matches SPF record 0.0 SPF_HELO_NONE SPF: HELO does not publish an SPF Record 0.0 UNPARSEABLE_RELAY Informational: message has unparseable relay lines X-BeenThere: linux-mediatek@lists.infradead.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: <linux-mediatek.lists.infradead.org> List-Unsubscribe: <http://lists.infradead.org/mailman/options/linux-mediatek>, <mailto:linux-mediatek-request@lists.infradead.org?subject=unsubscribe> List-Archive: <http://lists.infradead.org/pipermail/linux-mediatek/> List-Post: <mailto:linux-mediatek@lists.infradead.org> List-Help: <mailto:linux-mediatek-request@lists.infradead.org?subject=help> List-Subscribe: <http://lists.infradead.org/mailman/listinfo/linux-mediatek>, <mailto:linux-mediatek-request@lists.infradead.org?subject=subscribe> Cc: youlin.pei@mediatek.com, anan.sun@mediatek.com, Nicolas Boichat <drinkcat@chromium.org>, cui.zhang@mediatek.com, srv_heupstream@mediatek.com, chao.hao@mediatek.com, edison.hsieh@mediatek.com, linux-kernel@vger.kernel.org, Evan Green <evgreen@chromium.org>, Tomasz Figa <tfiga@google.com>, iommu@lists.linux-foundation.org, linux-mediatek@lists.infradead.org, yong.wu@mediatek.com, Robin Murphy <robin.murphy@arm.com>, linux-arm-kernel@lists.infradead.org Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Sender: "Linux-mediatek" <linux-mediatek-bounces@lists.infradead.org> Errors-To: linux-mediatek-bounces+patchwork-linux-mediatek=patchwork.kernel.org@lists.infradead.org |
Series |
Improve tlb range flush
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expand
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diff --git a/drivers/iommu/mtk_iommu.c b/drivers/iommu/mtk_iommu.c index d285457..c9d49af 100644 --- a/drivers/iommu/mtk_iommu.c +++ b/drivers/iommu/mtk_iommu.c @@ -191,7 +191,7 @@ 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");
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 <yong.wu@mediatek.com> --- drivers/iommu/mtk_iommu.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-)