From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from foss.arm.com (foss.arm.com [217.140.110.172]) by smtp.subspace.kernel.org (Postfix) with ESMTP id B7ED3222587; Fri, 10 Oct 2025 10:20:22 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=217.140.110.172 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1760091624; cv=none; b=liMTs/vUbX5wGKtJ0tgnyBzJRITJ2GxEkMWU2if27P/6zynBsgCC4brLgPPwc+NnaADGVoaEWN7JR8fcp/uvD3M3LCtRsDP8a12uhwTwybPduRYQm6tbe/5Mogymetji+P4bHHLn5QxbreIxtWUZvga+xw3oKPZluJvPCqp256E= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1760091624; c=relaxed/simple; bh=KfImDHlL/ITFgbqpsLvP+qWrAwwAaoTNYbFVyFzPkYI=; h=Message-ID:Date:MIME-Version:Subject:To:Cc:References:From: In-Reply-To:Content-Type; b=ps7ONEZhQuacvKC6vaszAGx5CxW0L3uP1HeKUDx7DGWqO/HgcBCOdH9Y64AFgcTqNUuNTrOrUK46Be0/3gJnNgn++fY2AyO7DvaqvcNv0u6V+2waTpsFKTC4MZvcrnyRC2YkWALzjZzmriWpvglYfTPy1lNlfobGN9thexD7yuQ= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=arm.com; spf=pass smtp.mailfrom=arm.com; arc=none smtp.client-ip=217.140.110.172 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=arm.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=arm.com Received: from usa-sjc-imap-foss1.foss.arm.com (unknown [10.121.207.14]) by usa-sjc-mx-foss1.foss.arm.com (Postfix) with ESMTP id 349DC1595; Fri, 10 Oct 2025 03:20:14 -0700 (PDT) Received: from [10.57.84.93] (unknown [10.57.84.93]) by usa-sjc-imap-foss1.foss.arm.com (Postfix) with ESMTPSA id 083513F792; Fri, 10 Oct 2025 03:20:19 -0700 (PDT) Message-ID: Date: Fri, 10 Oct 2025 11:20:40 +0100 Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 User-Agent: Mozilla Thunderbird Subject: Re: [PATCH RESEND v4 10/10] PM: EM: Notify an event when the performance domain changes To: Changwoo Min Cc: christian.loehle@arm.com, tj@kernel.org, pavel@kernel.org, len.brown@intel.com, rafael@kernel.org, kernel-dev@igalia.com, linux-pm@vger.kernel.org, sched-ext@lists.linux.dev, linux-kernel@vger.kernel.org References: <20250921031928.205869-1-changwoo@igalia.com> <20250921031928.205869-11-changwoo@igalia.com> Content-Language: en-US From: Lukasz Luba In-Reply-To: <20250921031928.205869-11-changwoo@igalia.com> Content-Type: text/plain; charset=UTF-8; format=flowed Content-Transfer-Encoding: 7bit On 9/21/25 04:19, Changwoo Min wrote: > Send an event to userspace when a performance domain is created or deleted, > or its energy model is updated. > > Signed-off-by: Changwoo Min > --- > kernel/power/energy_model.c | 7 +++++++ > 1 file changed, 7 insertions(+) > > diff --git a/kernel/power/energy_model.c b/kernel/power/energy_model.c > index 740076d24479..fca32d1c6661 100644 > --- a/kernel/power/energy_model.c > +++ b/kernel/power/energy_model.c > @@ -17,6 +17,8 @@ > #include > #include > > +#include "em_netlink.h" > + > /* > * Mutex serializing the registrations of performance domains and letting > * callbacks defined by drivers sleep. > @@ -350,6 +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); > @@ -697,6 +701,7 @@ int em_dev_register_pd_no_update(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_created(dev->em_pd); > return ret; > } > EXPORT_SYMBOL_GPL(em_dev_register_pd_no_update); > @@ -719,6 +724,8 @@ 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. LGTM, Reviewed-by: Lukasz Luba