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Wysocki" , Viresh Kumar , Shuah Khan , "Borislav Petkov" , Peter Zijlstra , Ingo Molnar , Giovanni Gherdovich , CC: Deepak Sharma , Alex Deucher , Mario Limonciello , Steven Noonan , Nathan Fontenot , Jinzhou Su , Xiaojian Du , , , Huang Rui Subject: [PATCH v3 09/21] cpufreq: amd: add trace for amd-pstate module Date: Fri, 29 Oct 2021 21:02:29 +0800 Message-ID: <20211029130241.1984459-10-ray.huang@amd.com> X-Mailer: git-send-email 2.25.1 In-Reply-To: <20211029130241.1984459-1-ray.huang@amd.com> References: <20211029130241.1984459-1-ray.huang@amd.com> MIME-Version: 1.0 Content-Transfer-Encoding: 8bit Content-Type: text/plain X-Originating-IP: [10.180.168.240] X-ClientProxiedBy: SATLEXMB04.amd.com (10.181.40.145) To SATLEXMB04.amd.com (10.181.40.145) X-EOPAttributedMessage: 0 X-MS-PublicTrafficType: Email X-MS-Office365-Filtering-Correlation-Id: 986ed24c-4c46-4e05-c300-08d99adc93de X-MS-TrafficTypeDiagnostic: CH0PR12MB5186: X-Microsoft-Antispam-PRVS: X-MS-Oob-TLC-OOBClassifiers: OLM:73; X-MS-Exchange-SenderADCheck: 1 X-MS-Exchange-AntiSpam-Relay: 0 X-Microsoft-Antispam: BCL:0; X-Microsoft-Antispam-Message-Info: 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 X-Forefront-Antispam-Report: CIP:165.204.84.17;CTRY:US;LANG:en;SCL:1;SRV:;IPV:CAL;SFV:NSPM;H:SATLEXMB04.amd.com;PTR:InfoDomainNonexistent;CAT:NONE;SFS:(4636009)(46966006)(36840700001)(83380400001)(5660300002)(2906002)(316002)(508600001)(82310400003)(16526019)(26005)(4326008)(356005)(110136005)(7696005)(6666004)(81166007)(54906003)(8936002)(86362001)(186003)(336012)(7416002)(36860700001)(426003)(2616005)(70586007)(8676002)(1076003)(70206006)(36756003)(47076005)(36900700001);DIR:OUT;SFP:1101; X-OriginatorOrg: amd.com X-MS-Exchange-CrossTenant-OriginalArrivalTime: 29 Oct 2021 13:04:01.2279 (UTC) X-MS-Exchange-CrossTenant-Network-Message-Id: 986ed24c-4c46-4e05-c300-08d99adc93de X-MS-Exchange-CrossTenant-Id: 3dd8961f-e488-4e60-8e11-a82d994e183d X-MS-Exchange-CrossTenant-OriginalAttributedTenantConnectingIp: TenantId=3dd8961f-e488-4e60-8e11-a82d994e183d;Ip=[165.204.84.17];Helo=[SATLEXMB04.amd.com] X-MS-Exchange-CrossTenant-AuthSource: BN8NAM11FT012.eop-nam11.prod.protection.outlook.com X-MS-Exchange-CrossTenant-AuthAs: Anonymous X-MS-Exchange-CrossTenant-FromEntityHeader: HybridOnPrem X-MS-Exchange-Transport-CrossTenantHeadersStamped: CH0PR12MB5186 Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Add trace event to monitor the performance value changes which is controlled by cpu governors. Signed-off-by: Huang Rui --- drivers/cpufreq/amd-pstate.c | 4 ++++ include/trace/events/power.h | 46 ++++++++++++++++++++++++++++++++++++ 2 files changed, 50 insertions(+) diff --git a/drivers/cpufreq/amd-pstate.c b/drivers/cpufreq/amd-pstate.c index d399938d6d85..6037590e82a6 100644 --- a/drivers/cpufreq/amd-pstate.c +++ b/drivers/cpufreq/amd-pstate.c @@ -36,6 +36,7 @@ #include #include #include +#include #include #include @@ -189,6 +190,9 @@ static void amd_pstate_update(struct amd_cpudata *cpudata, u32 min_perf, value &= ~REQ_MAX_PERF(~0L); value |= REQ_MAX_PERF(max_perf); + trace_amd_pstate_perf(min_perf, des_perf, max_perf, cpudata->cpu, + (value != prev), fast_switch); + if (value == prev) return; diff --git a/include/trace/events/power.h b/include/trace/events/power.h index af5018aa9517..c95c0b8d443d 100644 --- a/include/trace/events/power.h +++ b/include/trace/events/power.h @@ -173,6 +173,52 @@ TRACE_EVENT(cpu_frequency_limits, (unsigned long)__entry->cpu_id) ); +TRACE_EVENT(amd_pstate_perf, + + TP_PROTO(unsigned long min_perf, + unsigned long target_perf, + unsigned long capacity, + unsigned int cpu_id, + bool changed, + bool fast_switch + ), + + TP_ARGS(min_perf, + target_perf, + capacity, + cpu_id, + changed, + fast_switch + ), + + TP_STRUCT__entry( + __field(unsigned long, min_perf) + __field(unsigned long, target_perf) + __field(unsigned long, capacity) + __field(unsigned int, cpu_id) + __field(bool, changed) + __field(bool, fast_switch) + ), + + TP_fast_assign( + __entry->min_perf = min_perf; + __entry->target_perf = target_perf; + __entry->capacity = capacity; + __entry->cpu_id = cpu_id; + __entry->changed = changed; + __entry->fast_switch = fast_switch; + ), + + TP_printk("amd_min_perf=%lu amd_des_perf=%lu amd_max_perf=%lu cpu_id=%u changed=%s fast_switch=%s", + (unsigned long)__entry->min_perf, + (unsigned long)__entry->target_perf, + (unsigned long)__entry->capacity, + (unsigned int)__entry->cpu_id, + (__entry->changed) ? "true" : "false", + (__entry->fast_switch) ? "true" : "false" + ) +); + TRACE_EVENT(device_pm_callback_start, TP_PROTO(struct device *dev, const char *pm_ops, int event), -- 2.25.1