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[219.106.231.132]) by smtp.gmail.com with ESMTPSA id e3-20020a17090a818300b00233aacab89esm1182904pjn.48.2023.03.17.04.32.52 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Fri, 17 Mar 2023 04:32:55 -0700 (PDT) From: Shunsuke Mie To: Gustavo Pimentel Cc: Vinod Koul , Lorenzo Pieralisi , =?utf-8?q?Krzysztof_Wilczy=C5=84ski?= , Manivannan Sadhasivam , Kishon Vijay Abraham I , Arnd Bergmann , Greg Kroah-Hartman , Bjorn Helgaas , Shunsuke Mie , Kunihiko Hayashi , Yoshihiro Shimoda , Frank Li , linux-kernel@vger.kernel.org, dmaengine@vger.kernel.org, linux-pci@vger.kernel.org Subject: [RFC PATCH 03/11] pci: endpoint: function/pci-epf-test: Unify a range of time measurement Date: Fri, 17 Mar 2023 20:32:30 +0900 Message-Id: <20230317113238.142970-4-mie@igel.co.jp> X-Mailer: git-send-email 2.25.1 In-Reply-To: <20230317113238.142970-1-mie@igel.co.jp> References: <20230317113238.142970-1-mie@igel.co.jp> MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: linux-pci@vger.kernel.org This test code measures a time of data transfer. Some measurements include print, preparation and error checking. Change to measure during data tansfer. Signed-off-by: Shunsuke Mie --- drivers/pci/endpoint/functions/pci-epf-test.c | 12 +++++++----- 1 file changed, 7 insertions(+), 5 deletions(-) diff --git a/drivers/pci/endpoint/functions/pci-epf-test.c b/drivers/pci/endpoint/functions/pci-epf-test.c index 172e5ac0bd96..6955a3d2eb7e 100644 --- a/drivers/pci/endpoint/functions/pci-epf-test.c +++ b/drivers/pci/endpoint/functions/pci-epf-test.c @@ -356,7 +356,6 @@ static int pci_epf_test_copy(struct pci_epf_test *epf_test) goto err_dst_addr; } - ktime_get_ts64(&start); use_dma = !!(reg->flags & FLAG_USE_DMA); if (use_dma) { if (!epf_test->dma_supported) { @@ -371,9 +370,11 @@ static int pci_epf_test_copy(struct pci_epf_test *epf_test) goto err_map_addr; } + ktime_get_ts64(&start); ret = pci_epf_test_data_transfer(epf_test, dst_phys_addr, src_phys_addr, reg->size, 0, DMA_MEM_TO_MEM); + ktime_get_ts64(&end); if (ret) dev_err(dev, "Data transfer failed\n"); } else { @@ -385,11 +386,13 @@ static int pci_epf_test_copy(struct pci_epf_test *epf_test) goto err_map_addr; } + ktime_get_ts64(&start); memcpy_fromio(buf, src_addr, reg->size); memcpy_toio(dst_addr, buf, reg->size); + ktime_get_ts64(&end); kfree(buf); } - ktime_get_ts64(&end); + pci_epf_test_print_rate("COPY", reg->size, &start, &end, use_dma); err_map_addr: @@ -467,9 +470,9 @@ static int pci_epf_test_read(struct pci_epf_test *epf_test) ret = pci_epf_test_data_transfer(epf_test, dst_phys_addr, phys_addr, reg->size, reg->src_addr, DMA_DEV_TO_MEM); + ktime_get_ts64(&end); if (ret) dev_err(dev, "Data transfer failed\n"); - ktime_get_ts64(&end); dma_unmap_single(dma_dev, dst_phys_addr, reg->size, DMA_FROM_DEVICE); @@ -556,14 +559,13 @@ static int pci_epf_test_write(struct pci_epf_test *epf_test) } ktime_get_ts64(&start); - ret = pci_epf_test_data_transfer(epf_test, phys_addr, src_phys_addr, reg->size, reg->dst_addr, DMA_MEM_TO_DEV); + ktime_get_ts64(&end); if (ret) dev_err(dev, "Data transfer failed\n"); - ktime_get_ts64(&end); dma_unmap_single(dma_dev, src_phys_addr, reg->size, DMA_TO_DEVICE);