linux-kernel - [PATCH 11/11] PM: EM: Notify an event when the performance domain changes.

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]

Message-ID: <20250529001315.233492-12-changwoo@igalia.com>
Date: Thu, 29 May 2025 09:13:15 +0900
From: Changwoo Min <changwoo@...lia.com>
To: lukasz.luba@....com,
	rafael@...nel.org,
	len.brown@...el.com,
	pavel@...nel.org
Cc: christian.loehle@....com,
	tj@...nel.org,
	kernel-dev@...lia.com,
	linux-pm@...r.kernel.org,
	linux-kernel@...r.kernel.org,
	Changwoo Min <changwoo@...lia.com>
Subject: [PATCH 11/11] 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 <changwoo@...lia.com>
---
 kernel/power/energy_model.c | 6 ++++++
 1 file changed, 6 insertions(+)

diff --git a/kernel/power/energy_model.c b/kernel/power/energy_model.c
index 6ed847046a2f..5764821faef3 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_update(pd);
 	return 0;
 }
 EXPORT_SYMBOL_GPL(em_dev_update_perf_domain);
@@ -675,6 +677,8 @@ int em_dev_register_perf_domain(struct device *dev, unsigned int nr_states,
 	list_add_tail(&dev->em_pd->node, &em_pd_list);
 	mutex_unlock(&em_pd_list_mutex);
 
+	em_notify_pd_create(dev->em_pd);
+
 	return ret;
 }
 EXPORT_SYMBOL_GPL(em_dev_register_perf_domain);
@@ -697,6 +701,8 @@ 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_delete(dev->em_pd);
+
 	/*
 	 * The mutex separates all register/unregister requests and protects
 	 * from potential clean-up/setup issues in the debugfs directories.
-- 
2.49.0