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Fri, 14 Apr 2023 19:15:17 +0000 Received: from BY5PR11MB4274.namprd11.prod.outlook.com ([fe80::2988:48c2:4dd7:decd]) by BY5PR11MB4274.namprd11.prod.outlook.com ([fe80::2988:48c2:4dd7:decd%7]) with mapi id 15.20.6298.030; Fri, 14 Apr 2023 19:15:17 +0000 Message-ID: Date: Fri, 14 Apr 2023 12:15:14 -0700 User-Agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:102.0) Gecko/20100101 Firefox/102.0 Thunderbird/102.9.1 Content-Language: en-US To: "Dixit, Ashutosh" References: <20230413224414.2313507-1-vinay.belgaumkar@intel.com> <20230413224414.2313507-3-vinay.belgaumkar@intel.com> <87jzyeqqqo.wl-ashutosh.dixit@intel.com> From: "Belgaumkar, Vinay" In-Reply-To: <87jzyeqqqo.wl-ashutosh.dixit@intel.com> Content-Type: text/plain; charset="UTF-8"; format=flowed Content-Transfer-Encoding: 7bit X-ClientProxiedBy: SJ0PR03CA0251.namprd03.prod.outlook.com (2603:10b6:a03:3a0::16) To BY5PR11MB4274.namprd11.prod.outlook.com (2603:10b6:a03:1c1::23) MIME-Version: 1.0 X-MS-PublicTrafficType: Email X-MS-TrafficTypeDiagnostic: BY5PR11MB4274:EE_|IA1PR11MB6291:EE_ X-MS-Office365-Filtering-Correlation-Id: f7a03fa1-a1d7-4ba3-b32b-08db3d1c94b8 X-MS-Exchange-SenderADCheck: 1 X-MS-Exchange-AntiSpam-Relay: 0 X-Microsoft-Antispam: BCL:0; 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Since, in all instances, > we are always passing gt as 0. > > Maybe the caller is only interested in knowing if slpc is enabled. Can SLPC > be enabled for gt 0 and disabled for gt 1? In the case the caller should > really call something like: > > for_each_gt() > i915_is_slpc_enabled(fd, gt) > > and return false if slpc is disabled for any gt. > > I think what we should do is write two functions: > > 1. Rename the function above with the gt argument to something like: > > i915_is_slpc_enabled_gt() > > 2. Have another function without the gt argument: > > i915_is_slpc_enabled() which will do: > > for_each_gt() > i915_is_slpc_enabled_gt(fd, gt) > > and return false if slpc is disabled for any gt. > > And then have the tests call this second function without the gt argument. > > I think this will be cleaner than passing 0 as the gt from the tests. ok, created a helper for the helper :) This will hard code GT 0 instead of the tests doing it, when necessary. Thanks, Vinay. > > Thanks. > -- > Ashutosh > > >> { >> - int debugfs_fd = igt_debugfs_dir(fd); >> - char buf[4096] = {}; >> - int len; >> + int debugfs_fd; >> + char buf[256] = {}; >> + >> + debugfs_fd = igt_debugfs_gt_open(drm_fd, gt, "uc/guc_slpc_info", O_RDONLY); >> >> - igt_require(debugfs_fd != -1); >> + /* if guc_slpc_info not present then return false */ >> + if (debugfs_fd < 0) >> + return false; >> + read(debugfs_fd, buf, sizeof(buf)-1); >> >> - len = igt_debugfs_simple_read(debugfs_fd, "gt/uc/guc_slpc_info", buf, sizeof(buf)); >> close(debugfs_fd); >> >> - if (len < 0) >> - return false; >> - else >> - return strstr(buf, "SLPC state: running"); >> + return strstr(buf, "SLPC state: running"); >> } >> >> int igt_pm_get_runtime_suspended_time(struct pci_device *pci_dev) >> diff --git a/lib/igt_pm.h b/lib/igt_pm.h >> index d0d6d673..1b054dce 100644 >> --- a/lib/igt_pm.h >> +++ b/lib/igt_pm.h >> @@ -84,7 +84,7 @@ void igt_pm_set_d3cold_allowed(struct igt_device_card *card, const char *val); >> void igt_pm_setup_pci_card_runtime_pm(struct pci_device *pci_dev); >> void igt_pm_restore_pci_card_runtime_pm(void); >> void igt_pm_print_pci_card_runtime_status(void); >> -bool i915_is_slpc_enabled(int fd); >> +bool i915_is_slpc_enabled(int fd, int gt); >> int igt_pm_get_runtime_suspended_time(struct pci_device *pci_dev); >> int igt_pm_get_runtime_usage(struct pci_device *pci_dev); >> >> diff --git a/tests/i915/i915_pm_rps.c b/tests/i915/i915_pm_rps.c >> index d4ee2d58..85dae449 100644 >> --- a/tests/i915/i915_pm_rps.c >> +++ b/tests/i915/i915_pm_rps.c >> @@ -916,21 +916,21 @@ igt_main >> } >> >> igt_subtest("basic-api") { >> - igt_skip_on_f(i915_is_slpc_enabled(drm_fd), >> + igt_skip_on_f(i915_is_slpc_enabled(drm_fd, 0), >> "This subtest is not supported when SLPC is enabled\n"); >> min_max_config(basic_check, false); >> } >> >> /* Verify the constraints, check if we can reach idle */ >> igt_subtest("min-max-config-idle") { >> - igt_skip_on_f(i915_is_slpc_enabled(drm_fd), >> + igt_skip_on_f(i915_is_slpc_enabled(drm_fd, 0), >> "This subtest is not supported when SLPC is enabled\n"); >> min_max_config(idle_check, true); >> } >> >> /* Verify the constraints with high load, check if we can reach max */ >> igt_subtest("min-max-config-loaded") { >> - igt_skip_on_f(i915_is_slpc_enabled(drm_fd), >> + igt_skip_on_f(i915_is_slpc_enabled(drm_fd, 0), >> "This subtest is not supported when SLPC is enabled\n"); >> load_helper_run(HIGH); >> min_max_config(loaded_check, false); >> -- >> 2.38.1 >>