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Thu, 3 Oct 2019 23:05:28 +0000 From: Michael Kelley To: brandonbonaby94 , KY Srinivasan , Haiyang Zhang , Stephen Hemminger , "sashal@kernel.org" CC: brandonbonaby94 , "linux-hyperv@vger.kernel.org" , "linux-kernel@vger.kernel.org" Subject: RE: [PATCH v6 1/2] drivers: hv: vmbus: Introduce latency testing Thread-Topic: [PATCH v6 1/2] drivers: hv: vmbus: Introduce latency testing Thread-Index: AQHVei3JXD/BzUXMhEaGftCyaV0YaKdJiWAw Date: Thu, 3 Oct 2019 23:05:28 +0000 Message-ID: References: In-Reply-To: Accept-Language: en-US Content-Language: en-US X-MS-Has-Attach: X-MS-TNEF-Correlator: msip_labels: MSIP_Label_f42aa342-8706-4288-bd11-ebb85995028c_Enabled=True; MSIP_Label_f42aa342-8706-4288-bd11-ebb85995028c_SiteId=72f988bf-86f1-41af-91ab-2d7cd011db47; MSIP_Label_f42aa342-8706-4288-bd11-ebb85995028c_Owner=mikelley@ntdev.microsoft.com; MSIP_Label_f42aa342-8706-4288-bd11-ebb85995028c_SetDate=2019-10-03T23:05:26.3343154Z; MSIP_Label_f42aa342-8706-4288-bd11-ebb85995028c_Name=General; MSIP_Label_f42aa342-8706-4288-bd11-ebb85995028c_Application=Microsoft Azure Information Protection; 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received-spf: None (protection.outlook.com: microsoft.com does not designate permitted sender hosts) x-ms-exchange-senderadcheck: 1 x-microsoft-antispam: BCL:0; x-microsoft-antispam-message-info: EViOfk9SVdx+OzCMWGT9W+ggfvhBr6M4olyogVYPzi9Ia9JeTxL3S+eOEiIdqL+1z08OS8tUUyGBDYE/QlZLeO0r2RN7jrEzuwNJX3xuDt34feyRwYFyKx86TQfLWifO8Ij7bympZfqLOnp3pqRZSm84ALcTsQF9WZfYmtcyX6Fu1gGoDpBQ5cK9kPjcDmHoUTBVk9hSu8hxrrJ2UrUT9ZpG3ScsSpx0teP07dTij0vEdnp3+y6KV8udmQCCE45kuBopprxkAwPhEIsnLbOUr+PqgzGVTccxOeG3tk0uYHGw8fBCr+ldLkD3zi/67Q24HyrvigJ18yWrkYhgxyYTPV/4htDv2igzXgqbQ+/B1HyAhEPe2tzzpfV8L35oqCQq66ldp6hrmW1siG93U3aqM6dOGtzZI52BWkPcyXGnTH8= Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: quoted-printable MIME-Version: 1.0 X-OriginatorOrg: microsoft.com X-MS-Exchange-CrossTenant-Network-Message-Id: 464ef189-4758-41c7-3fd7-08d748562ede X-MS-Exchange-CrossTenant-originalarrivaltime: 03 Oct 2019 23:05:28.6169 (UTC) X-MS-Exchange-CrossTenant-fromentityheader: Hosted X-MS-Exchange-CrossTenant-id: 72f988bf-86f1-41af-91ab-2d7cd011db47 X-MS-Exchange-CrossTenant-mailboxtype: HOSTED X-MS-Exchange-CrossTenant-userprincipalname: Xk4VUc62n7kQe/yFcvcadH48pgcNG4TpiICOCG+NO88itKfiO9kZTi6YXkCYVPz1AdS4kUf0iyNgcIXB8ubZhVYtfh/Qqgr3SQ1c0IYgyV8= X-MS-Exchange-Transport-CrossTenantHeadersStamped: CY4PR21MB0791 Sender: linux-hyperv-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-hyperv@vger.kernel.org From: Branden Bonaby Sent: Thursday, October 3,= 2019 2:02 PM >=20 > Introduce user specified latency in the packet reception path > By exposing the test parameters as part of the debugfs channel > attributes. We will control the testing state via these attributes. >=20 > Signed-off-by: Branden Bonaby > --- > changes in v6: > - changed kernel version in > Documentation/ABI/testing/debugfs-hyperv to 5.5 >=20 > - removed less than 0 if statement when dealing with > u64 datatype, as suggested by Michael. >=20 > changes in v5: > - As per Stephen's suggestion, Moved CONFIG_HYPERV_TESTING > to lib/Kconfig.debug. >=20 > - Fixed build issue reported by Kbuild, with Michael's > suggestion to make hv_debugfs part of the hv_vmbus > module. >=20 > - updated debugfs-hyperv to show kernel version 5.4 >=20 > changes in v4: > - Combined v3 patch 2 into this patch, and changed the > commit description to reflect this. >=20 > - Moved debugfs code from "vmbus_drv.c" that was in > previous v3 patch 2, into a new file "debugfs.c" in > drivers/hv. >=20 > - Updated the Makefile to compile "debugfs.c" if > CONFIG_HYPERV_TESTING is enabled >=20 > - As per Michael's comments, added empty implementations > of the new functions, so the compiler will not generate > code when CONFIG_HYPERV_TESTING is not enabled. >=20 > - Added microseconds into description for files in > Documentation/ABI/testing/debugfs-hyperv. >=20 > Changes in v2: > - Add #ifdef in Kconfig file so test code will not interfere > with non-test code. > - Move test code functions for delay to hyperv_vmbus header > file. > - Wrap test code under #ifdef statement. >=20 > Documentation/ABI/testing/debugfs-hyperv | 23 +++ > MAINTAINERS | 1 + > drivers/hv/Makefile | 1 + > drivers/hv/connection.c | 1 + > drivers/hv/hv_debugfs.c | 178 +++++++++++++++++++++++ > drivers/hv/hyperv_vmbus.h | 31 ++++ > drivers/hv/ring_buffer.c | 2 + > drivers/hv/vmbus_drv.c | 6 + > include/linux/hyperv.h | 19 +++ > lib/Kconfig.debug | 7 + > 10 files changed, 269 insertions(+) > create mode 100644 Documentation/ABI/testing/debugfs-hyperv > create mode 100644 drivers/hv/hv_debugfs.c >=20 Reviewed-by: Michael Kelley