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Wysocki" , Viresh Kumar , Huang Rui CC: Perry Yuan , K Prateek Nayak , , , Subject: [RFC PATCH 5/6] cpufreq/amd-pstate: Reduce the scope of exported symbols Date: Tue, 30 Jun 2026 19:03:03 +0000 Message-ID: <20260630190304.5671-2-kprateek.nayak@amd.com> X-Mailer: git-send-email 2.43.0 In-Reply-To: <20260630185904.5602-1-kprateek.nayak@amd.com> References: <20260630185904.5602-1-kprateek.nayak@amd.com> Precedence: bulk X-Mailing-List: linux-doc@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: 8bit Content-Type: text/plain X-ClientProxiedBy: satlexmb07.amd.com (10.181.42.216) To satlexmb07.amd.com (10.181.42.216) X-EOPAttributedMessage: 0 X-MS-PublicTrafficType: Email X-MS-TrafficTypeDiagnostic: BL6PEPF0001AB59:EE_|SJ0PR12MB8091:EE_ X-MS-Office365-Filtering-Correlation-Id: e1438abe-dc65-4d3b-a761-08ded6da479f X-MS-Exchange-SenderADCheck: 1 X-MS-Exchange-AntiSpam-Relay: 0 X-Microsoft-Antispam: BCL:0;ARA:13230040|82310400026|1800799024|23010399003|36860700016|376014|6133799003|11063799006|56012099006|18002099003|22082099003; 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:NLI;SFV:NSPM;H:satlexmb07.amd.com;PTR:InfoDomainNonexistent;CAT:NONE;SFS:(13230040)(82310400026)(1800799024)(23010399003)(36860700016)(376014)(6133799003)(11063799006)(56012099006)(18002099003)(22082099003);DIR:OUT;SFP:1101; X-MS-Exchange-AntiSpam-MessageData-ChunkCount: 1 X-MS-Exchange-AntiSpam-MessageData-0: jRbjwQ+I5yQPjNfo7NHyjEzDmSCn+9KqXyKXREHPS/cXdHhgBRi2SXU+Tj4mPE8fVUwtVYW8LwCZ+KVct7tPvJsOBT+yDHl8sU4zkKphCD6bOC57W1u+lgVjjeAQawzdO0twBCDAiGZdNm3WafxXeyI+QTiGS3paxwnlolYxb7IXfeTo80x3cTnDe2GnkHfstEYkd0zfgGCFYSoLCsMw+d+iVgDC/jNdzd5zGPrgW7+xlHsvkcSbz/66yqtkIduKRXjdclaSPocVwz0W4uwt/MTwuSwyiiSm7EoAyjgEQSjimY+6B1cfYg8PEHOm3FhZAhuElN59MrP/y3XlpUifaR1dxnW9shiI7vcJcVzUHFfGtl5Jk7690DVvI2MJtbxTYID7tKmR+pmhDWCgXSsqSeHRazwHLbmV/gbQa5E2UURtISHLvoB2OEPGi3QAnG5H X-OriginatorOrg: amd.com X-MS-Exchange-CrossTenant-OriginalArrivalTime: 30 Jun 2026 19:03:32.5118 (UTC) X-MS-Exchange-CrossTenant-Network-Message-Id: e1438abe-dc65-4d3b-a761-08ded6da479f 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=[satlexmb07.amd.com] X-MS-Exchange-CrossTenant-AuthSource: BL6PEPF0001AB59.namprd02.prod.outlook.com X-MS-Exchange-CrossTenant-AuthAs: Anonymous X-MS-Exchange-CrossTenant-FromEntityHeader: HybridOnPrem X-MS-Exchange-Transport-CrossTenantHeadersStamped: SJ0PR12MB8091 Symbols exported by amd-pstate.c are ever only needed for amd-pstate-ut. Introduce EXPORT_SYMBOL_FOR_PSTATE_UT() to export these symbols selectively to "amd-pstate-ut" namespace as opposed to all GPL modules. No functional changes intended. Signed-off-by: K Prateek Nayak --- drivers/cpufreq/amd-pstate.c | 14 +++++++------- drivers/cpufreq/amd-pstate.h | 7 +++++++ 2 files changed, 14 insertions(+), 7 deletions(-) diff --git a/drivers/cpufreq/amd-pstate.c b/drivers/cpufreq/amd-pstate.c index 61f30820d95a..44c03b0be219 100644 --- a/drivers/cpufreq/amd-pstate.c +++ b/drivers/cpufreq/amd-pstate.c @@ -75,7 +75,7 @@ const char *amd_pstate_get_mode_string(enum amd_pstate_mode mode) mode = AMD_PSTATE_UNDEFINED; return amd_pstate_mode_string[mode]; } -EXPORT_SYMBOL_GPL(amd_pstate_get_mode_string); +EXPORT_SYMBOL_FOR_PSTATE_UT(amd_pstate_get_mode_string); struct quirk_entry { u32 nominal_freq; @@ -1266,7 +1266,7 @@ void amd_pstate_clear_dynamic_epp(struct cpufreq_policy *policy) kfree(cpudata->profile_name); cpudata->dynamic_epp = false; } -EXPORT_SYMBOL_GPL(amd_pstate_clear_dynamic_epp); +EXPORT_SYMBOL_FOR_PSTATE_UT(amd_pstate_clear_dynamic_epp); static int amd_pstate_set_dynamic_epp(struct cpufreq_policy *policy) { @@ -1472,7 +1472,7 @@ ssize_t store_energy_performance_preference(struct cpufreq_policy *policy, return count; } -EXPORT_SYMBOL_GPL(store_energy_performance_preference); +EXPORT_SYMBOL_FOR_PSTATE_UT(store_energy_performance_preference); ssize_t show_energy_performance_preference(struct cpufreq_policy *policy, char *buf) { @@ -1506,7 +1506,7 @@ ssize_t show_energy_performance_preference(struct cpufreq_policy *policy, char * return sysfs_emit(buf, "%s\n", energy_perf_strings[preference]); } -EXPORT_SYMBOL_GPL(show_energy_performance_preference); +EXPORT_SYMBOL_FOR_PSTATE_UT(show_energy_performance_preference); static ssize_t store_amd_pstate_floor_freq(struct cpufreq_policy *policy, const char *buf, size_t count) @@ -1606,7 +1606,7 @@ struct freq_attr **amd_pstate_get_current_attrs(void) return NULL; return current_pstate_driver->attr; } -EXPORT_SYMBOL_GPL(amd_pstate_get_current_attrs); +EXPORT_SYMBOL_FOR_PSTATE_UT(amd_pstate_get_current_attrs); static struct freq_attr **get_freq_attrs(void) { @@ -1791,7 +1791,7 @@ int amd_pstate_get_status(void) { return cppc_state; } -EXPORT_SYMBOL_GPL(amd_pstate_get_status); +EXPORT_SYMBOL_FOR_PSTATE_UT(amd_pstate_get_status); int amd_pstate_update_status(const char *buf, size_t size) { @@ -1811,7 +1811,7 @@ int amd_pstate_update_status(const char *buf, size_t size) return 0; } -EXPORT_SYMBOL_GPL(amd_pstate_update_status); +EXPORT_SYMBOL_FOR_PSTATE_UT(amd_pstate_update_status); static ssize_t status_show(struct device *dev, struct device_attribute *attr, char *buf) diff --git a/drivers/cpufreq/amd-pstate.h b/drivers/cpufreq/amd-pstate.h index 23e8baa05849..edd697a5e29f 100644 --- a/drivers/cpufreq/amd-pstate.h +++ b/drivers/cpufreq/amd-pstate.h @@ -11,6 +11,13 @@ #include #include +#if IS_MODULE(CONFIG_X86_AMD_PSTATE_UT) +#define EXPORT_SYMBOL_FOR_PSTATE_UT(symbol) \ + EXPORT_SYMBOL_FOR_MODULES(symbol, "amd-pstate-ut") +#else +#define EXPORT_SYMBOL_FOR_PSTATE_UT(symbol) +#endif + /********************************************************************* * AMD P-state INTERFACE * *********************************************************************/ -- 2.34.1