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X-OriginatorOrg: Nvidia.com X-MS-Exchange-CrossTenant-OriginalArrivalTime: 18 Apr 2023 11:36:14.3267 (UTC) X-MS-Exchange-CrossTenant-Network-Message-Id: 1831378e-dd9b-4a39-b9e7-08db40011df0 X-MS-Exchange-CrossTenant-Id: 43083d15-7273-40c1-b7db-39efd9ccc17a X-MS-Exchange-CrossTenant-OriginalAttributedTenantConnectingIp: TenantId=43083d15-7273-40c1-b7db-39efd9ccc17a;Ip=[216.228.118.233];Helo=[mail.nvidia.com] X-MS-Exchange-CrossTenant-AuthSource: DM6NAM11FT033.eop-nam11.prod.protection.outlook.com X-MS-Exchange-CrossTenant-AuthAs: Anonymous X-MS-Exchange-CrossTenant-FromEntityHeader: HybridOnPrem X-MS-Exchange-Transport-CrossTenantHeadersStamped: PH8PR12MB6914 Precedence: bulk List-ID: X-Mailing-List: linux-pm@vger.kernel.org Export the get_cpu_with_amu_feat() function for use by "cppc_cpufreq" to check if any CPU implements ARM's Activity Monitor Unit (AMU). If AMU is available, then for re-constructing the current CPU freq from its counters, queue work on target CPU to read the counters in a single call instead of reading them in separate smp calls. Signed-off-by: Sumit Gupta --- arch/arm64/kernel/cpufeature.c | 1 + 1 file changed, 1 insertion(+) diff --git a/arch/arm64/kernel/cpufeature.c b/arch/arm64/kernel/cpufeature.c index d9345e9c0226..ec31da7043eb 100644 --- a/arch/arm64/kernel/cpufeature.c +++ b/arch/arm64/kernel/cpufeature.c @@ -1917,6 +1917,7 @@ int get_cpu_with_amu_feat(void) { return cpumask_any(&amu_cpus); } +EXPORT_SYMBOL_GPL(get_cpu_with_amu_feat); static void cpu_amu_enable(struct arm64_cpu_capabilities const *cap) {