From a1b17c9ac87a21b677077bc47d7579a2897a13f3 Mon Sep 17 00:00:00 2001 From: Changwoo Min Date: Tue, 21 Oct 2025 07:09:14 +0900 Subject: [PATCH] PM: EM: Notify an event when the performance domain changes Send an event to userspace when a performance domain is created or deleted, or its energy model is updated. Signed-off-by: Changwoo Min Reviewed-by: Lukasz Luba Link: https://patch.msgid.link/20251020220914.320832-11-changwoo@igalia.com Signed-off-by: Rafael J. Wysocki --- kernel/power/energy_model.c | 5 +++++ 1 file changed, 5 insertions(+) diff --git a/kernel/power/energy_model.c b/kernel/power/energy_model.c index 9e35aba4b113..e669d5057fca 100644 --- a/kernel/power/energy_model.c +++ b/kernel/power/energy_model.c @@ -352,6 +352,8 @@ int em_dev_update_perf_domain(struct device *dev, em_table_free(old_table); mutex_unlock(&em_pd_mutex); + + em_notify_pd_updated(pd); return 0; } EXPORT_SYMBOL_GPL(em_dev_update_perf_domain); @@ -696,6 +698,7 @@ unlock: list_add_tail(&dev->em_pd->node, &em_pd_list); mutex_unlock(&em_pd_list_mutex); + em_notify_pd_created(dev->em_pd); return ret; } EXPORT_SYMBOL_GPL(em_dev_register_pd_no_update); @@ -718,6 +721,8 @@ void em_dev_unregister_perf_domain(struct device *dev) list_del_init(&dev->em_pd->node); mutex_unlock(&em_pd_list_mutex); + em_notify_pd_deleted(dev->em_pd); + /* * The mutex separates all register/unregister requests and protects * from potential clean-up/setup issues in the debugfs directories. -- 2.47.3