From patchwork Mon Apr 29 23:41:48 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Ricardo Neri X-Patchwork-Id: 793206 Received: from mgamail.intel.com (mgamail.intel.com [192.198.163.15]) (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 AA56B190697; Mon, 29 Apr 2024 23:35:09 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=192.198.163.15 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1714433712; cv=none; b=gma7uYg5aOrehLyrcC+7ywyVBVHAaKO30LUgX708kwBHtiAJPXlIMn3/0jYi98pL7ijp9q0xqA+MlF+4B1Sz2RsaTO/IU2rMEc85QSxdkLJJ2aKKJSeQQtgSdElr8+1IOn+rSYliR00sgWU+0aPUmHqcpkXM1rcugFhlxcBm6X4= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1714433712; c=relaxed/simple; bh=09KM4l96TiB3LSdozRv/22chXIhMd0dxxprNLt4d82A=; h=From:To:Cc:Subject:Date:Message-Id; b=GBgdEBce5QfdRBW7EgodBcYD3jUgzKUt1mwj6ZaGEgQfXn3DbcJ4KV8sdrU1N67IcxmETzg073yWY61W22jefoB4KAB9KuELK+ftIOpDASd4Jqv9E/iJB1jzZbZXI8Kx+F68OQ6gBe/nXZrsAiFKw22nZo+rhLRnxLqJGIlPUOk= ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=linux.intel.com; spf=none smtp.mailfrom=linux.intel.com; dkim=pass (2048-bit key) header.d=intel.com header.i=@intel.com header.b=IIsXhKOn; arc=none smtp.client-ip=192.198.163.15 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=linux.intel.com Authentication-Results: smtp.subspace.kernel.org; spf=none smtp.mailfrom=linux.intel.com Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=intel.com header.i=@intel.com header.b="IIsXhKOn" DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=intel.com; i=@intel.com; q=dns/txt; s=Intel; t=1714433710; x=1745969710; h=from:to:cc:subject:date:message-id; bh=09KM4l96TiB3LSdozRv/22chXIhMd0dxxprNLt4d82A=; b=IIsXhKOn7qltVz/BF6sjKQ68t4dVMiilDzMERSNMOQcngnSivcKzodJ3 7tOMhtUrO6j9BFD+JCmugTfy80ybrCwx2AwJf0TsJLoKK5SJsgSu+3qIE tST1FWeodkmiRTpunB1jX0DuNFEZRVMolb2f1gTkwH1RB6jJyPmJG+SaO f2p5V7y+O9sR8ZLScC8njxmZOqM8mwyDHWDInoEgTr2g2UrDPQ2M4A/7Z cUrwt97ERKnWf/REJ2fs19CCjweRxxOl0D2qDJ1/I1lLnG+apP7eGFE8S M/yjCzQZyuUf2OIGmfdldFL6Op/AzpcUvsqhvixZNy6+sqCDQfzlSzHmO Q==; X-CSE-ConnectionGUID: cOHRmrbXRVqQaci5PDEp2g== X-CSE-MsgGUID: MbjWfSnkSWSi3r5R7wbBCA== X-IronPort-AV: E=McAfee;i="6600,9927,11059"; a="10274507" X-IronPort-AV: E=Sophos;i="6.07,240,1708416000"; d="scan'208";a="10274507" Received: from fmviesa009.fm.intel.com ([10.60.135.149]) by fmvoesa109.fm.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 29 Apr 2024 16:35:09 -0700 X-CSE-ConnectionGUID: ex2prvGCRZKr/uUMSUQ56Q== X-CSE-MsgGUID: GHPdIo1UQferdd5Y6b4Yeg== X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="6.07,240,1708416000"; d="scan'208";a="26200130" Received: from ranerica-svr.sc.intel.com ([172.25.110.23]) by fmviesa009.fm.intel.com with ESMTP; 29 Apr 2024 16:35:08 -0700 From: Ricardo Neri To: "Rafael J. Wysocki" Cc: Zhang Rui , Srinivas Pandruvada , Len Brown , Stanislaw Gruszka , linux-pm@vger.kernel.org, linux-kernel@vger.kernel.org, Ricardo Neri Subject: [PATCH 0/4] intel: thermal: hfi: Add debugfs files for tuning Date: Mon, 29 Apr 2024 16:41:48 -0700 Message-Id: <20240429234152.16230-1-ricardo.neri-calderon@linux.intel.com> X-Mailer: git-send-email 2.17.1 Precedence: bulk X-Mailing-List: linux-pm@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: Hi, HFI uses thermal netlink to relay updated CPU capabilities to user space. The delay between an HFI interrupt and its corresponding thermal netlink event as well as the number of capabilities updated per event (its payload) have been so far hard-coded in intel_hfi.c. These hard-coded values may not suit all hardware configurations or listeners. If the delay is too long, much of the information from consecutive hardware updates will be lost. If the delay is too short, listeners may be overwhelmed with notifications. The payload size may cause unnecessary overhead if it is too small, as single HFI update is broken up into several thermal netlink events. Listeners are better placed to decide the value of these parameters. They know how quickly they can act on notifications and know better how to handle them. Add a debugfs interface to let listeners experiment with and tune these parameters. These patches apply cleanly on top of the testing branch of Rafael's linux-pm. Thanks and BR, Ricardo Ricardo Neri (4): thermal: intel: hfi: Rename HFI_UPDATE_INTERVAL thermal: intel: hfi: Tune the HFI thermal netlink event delay via debugfs thermal: intel: hfi: Rename HFI_MAX_THERM_NOTIFY_COUNT thermal: intel: hfi: Tune the number of CPU capabilities per netlink event drivers/thermal/intel/intel_hfi.c | 117 +++++++++++++++++++++++++++--- 1 file changed, 108 insertions(+), 9 deletions(-) Acked-by: Zhang Rui