From patchwork Thu May 29 00:13:10 2025 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Changwoo Min X-Patchwork-Id: 893520 Received: from fanzine2.igalia.com (fanzine2.igalia.com [213.97.179.56]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id AC5724642D; Thu, 29 May 2025 00:14:12 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=213.97.179.56 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1748477654; cv=none; b=ZxYaW7x1Jo7qZXYnkjHVOnRsibbR5zbtcpp3tU5s9RggIaRrwnALorIWyXatTsPUDD72Av34T8/QPPZ9GxrsLyunORn1dbD9XbHtmXeK8sYaDogknjhLa2iC83IEbUxVZu7X/1LCUdu5/a4DbUbP6WLxUnCJU145L5YJ2RNjN/U= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1748477654; c=relaxed/simple; bh=fPmC+sf7hFuSga3JaCOOR+pbWUeKdP8Mf+qdd4uZBmo=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version; b=OfW4sBXfUwYRI+EOR3Zxfr6wyFxlKh2BQHMra9Av1luFKasOi74gZjT7ttjwza1Qkrdc/iEZy9IcI4ATtK7Es1tanx+8uyIRLucp6Ue7npNnhV39AujQbbZ46wYz2yoY8/qO2+nKpO/i1ydbSZUa/t8fSRhq0p3JSta93Gc3mWk= ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=igalia.com; spf=pass smtp.mailfrom=igalia.com; dkim=pass (2048-bit key) header.d=igalia.com header.i=@igalia.com header.b=hJEouFOe; arc=none smtp.client-ip=213.97.179.56 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=igalia.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=igalia.com Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=igalia.com header.i=@igalia.com header.b="hJEouFOe" DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=igalia.com; s=20170329; h=Content-Transfer-Encoding:MIME-Version:References:In-Reply-To: Message-ID:Date:Subject:Cc:To:From:Sender:Reply-To:Content-Type:Content-ID: Content-Description:Resent-Date:Resent-From:Resent-Sender:Resent-To:Resent-Cc :Resent-Message-ID:List-Id:List-Help:List-Unsubscribe:List-Subscribe: List-Post:List-Owner:List-Archive; bh=PyyfjXDDjNfrkft1ylxTCOBf1BYeXJ3sHB4l4H6orC4=; b=hJEouFOekqCXsE3Qdqn+7wJ/ln c7lxd7Uq3d3F/3YLN6+EABptRGVujWSosM2fBkZbwc2pulfd2i6YIcrmQ2xgXaD3iuIyoIqQVtrXM wj4mtaXBEchgrOk4BV4sY2kuh2a4FSRqUGlSzWHCtAb0tIw034tjwpMmfRLZ3rH/BJNWvDLtg/BDY wBir/SvkU4Icii6JgARXmE6bsfw5XkPWYwx1q4auNMf7n1RqpzIAt0X5W9xfFarpOYJv3PicBx7iS wcVmnYRqc6irB/2JFx7BL0QhlwdBm+hS4uLQe+gJgMH9CyeH5cJgRGLZw1nBCM0zoBPkKlZMXM6AW eenTShQA==; Received: from [58.29.143.236] (helo=localhost) by fanzine2.igalia.com with utf8esmtpsa (Cipher TLS1.3:ECDHE_SECP256R1__RSA_PSS_RSAE_SHA256__AES_256_GCM:256) (Exim) id 1uKQuL-00EZwr-AY; Thu, 29 May 2025 02:14:06 +0200 From: Changwoo Min To: lukasz.luba@arm.com, rafael@kernel.org, len.brown@intel.com, pavel@kernel.org Cc: christian.loehle@arm.com, tj@kernel.org, kernel-dev@igalia.com, linux-pm@vger.kernel.org, linux-kernel@vger.kernel.org, Changwoo Min Subject: [PATCH 06/11] PM: EM: Expose the ID of a performance domain via debugfs. Date: Thu, 29 May 2025 09:13:10 +0900 Message-ID: <20250529001315.233492-7-changwoo@igalia.com> X-Mailer: git-send-email 2.49.0 In-Reply-To: <20250529001315.233492-1-changwoo@igalia.com> References: <20250529001315.233492-1-changwoo@igalia.com> Precedence: bulk X-Mailing-List: linux-pm@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 For ease of debugging, let's expose the assigned ID of a performance domain through debugfs (e.g., /sys/kernel/debug/energy_model/cpu0/id). Signed-off-by: Changwoo Min --- kernel/power/energy_model.c | 12 ++++++++++++ 1 file changed, 12 insertions(+) diff --git a/kernel/power/energy_model.c b/kernel/power/energy_model.c index 529f8a63ab3d..f441c9c1b848 100644 --- a/kernel/power/energy_model.c +++ b/kernel/power/energy_model.c @@ -128,6 +128,16 @@ static int em_debug_flags_show(struct seq_file *s, void *unused) } DEFINE_SHOW_ATTRIBUTE(em_debug_flags); +static int em_debug_id_show(struct seq_file *s, void *unused) +{ + struct em_perf_domain *pd = s->private; + + seq_printf(s, "%d\n", pd->id); + + return 0; +} +DEFINE_SHOW_ATTRIBUTE(em_debug_id); + static void em_debug_create_pd(struct device *dev) { struct em_dbg_info *em_dbg; @@ -144,6 +154,8 @@ static void em_debug_create_pd(struct device *dev) debugfs_create_file("flags", 0444, d, dev->em_pd, &em_debug_flags_fops); + debugfs_create_file("id", 0444, d, dev->em_pd, &em_debug_id_fops); + em_dbg = devm_kcalloc(dev, dev->em_pd->nr_perf_states, sizeof(*em_dbg), GFP_KERNEL); if (!em_dbg)