From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id DA6F3ECAAA1 for ; Fri, 9 Sep 2022 23:07:26 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S231912AbiIIXHZ (ORCPT ); Fri, 9 Sep 2022 19:07:25 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:48490 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S231447AbiIIXGs (ORCPT ); Fri, 9 Sep 2022 19:06:48 -0400 Received: from mga09.intel.com (mga09.intel.com [134.134.136.24]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id A26DC1153A5 for ; Fri, 9 Sep 2022 16:06:37 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=intel.com; i=@intel.com; q=dns/txt; s=Intel; t=1662764797; x=1694300797; h=from:to:cc:subject:date:message-id:in-reply-to: references; bh=V+XE+HwnTyiz33d+vGV9bfegjagMw1gGclttOzUh/uQ=; b=WFXHjmJXBwuKjp/fIG+G2ARoxUOMZ9rhHBGoy2XnFZ+5XzvWNMHBk+/X 8hv9lb/X9OdVpJh/hnqblREa61qviKkxzJx0R989H9WmeH1dkzTQeG2CB X5u+/IdvmBhjlbuuh/ccRag65tJGHxquA8nnhlcaOT6aLy9X/wY403EcV ZrU2CAOgPnZ0qmJWqIO9O1RDoYjOE2NCVSFWaaaXDHDUTnGlhX3RtVurv MkqBlxNEvinFLMJn5g+YykM9xzBZyfHbiQ9UQ8pD0Fm3CbSJbFsKqytEM H/8GuB0HVLfGqNobuiDILL5WC+lrd1cs/6y0tWzq7IrxPoUM5J0SlDcEI A==; X-IronPort-AV: E=McAfee;i="6500,9779,10465"; a="298386919" X-IronPort-AV: E=Sophos;i="5.93,304,1654585200"; d="scan'208";a="298386919" Received: from fmsmga008.fm.intel.com ([10.253.24.58]) by orsmga102.jf.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 09 Sep 2022 16:06:35 -0700 X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="5.93,304,1654585200"; d="scan'208";a="677355024" Received: from ranerica-svr.sc.intel.com ([172.25.110.23]) by fmsmga008.fm.intel.com with ESMTP; 09 Sep 2022 16:06:34 -0700 From: Ricardo Neri To: "Peter Zijlstra (Intel)" , Juri Lelli , Vincent Guittot Cc: Ricardo Neri , "Ravi V. Shankar" , Ben Segall , Daniel Bristot de Oliveira , Dietmar Eggemann , Len Brown , Mel Gorman , "Rafael J. Wysocki" , Srinivas Pandruvada , Steven Rostedt , Tim Chen , Valentin Schneider , x86@kernel.org, linux-kernel@vger.kernel.org, Ricardo Neri , "Tim C . Chen" Subject: [RFC PATCH 15/23] thermal: intel: hfi: Report per-cpu class-specific performance scores Date: Fri, 9 Sep 2022 16:11:57 -0700 Message-Id: <20220909231205.14009-16-ricardo.neri-calderon@linux.intel.com> X-Mailer: git-send-email 2.17.1 In-Reply-To: <20220909231205.14009-1-ricardo.neri-calderon@linux.intel.com> References: <20220909231205.14009-1-ricardo.neri-calderon@linux.intel.com> Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Support the arch_get_task_class_score() interface of the scheduler. Use the data that Intel Thread Director provides to inform the scheduler the performance of a class of tasks when placed on a given CPU. Cc: Ben Segall Cc: Daniel Bristot de Oliveira Cc: Dietmar Eggemann Cc: Len Brown Cc: Mel Gorman Cc: Rafael J. Wysocki Cc: Srinivas Pandruvada Cc: Steven Rostedt Cc: Tim C. Chen Cc: Valentin Schneider Cc: x86@kernel.org Cc: linux-kernel@vger.kernel.org Signed-off-by: Ricardo Neri --- arch/x86/include/asm/topology.h | 2 ++ drivers/thermal/intel/intel_hfi.c | 40 +++++++++++++++++++++++++++++++ 2 files changed, 42 insertions(+) diff --git a/arch/x86/include/asm/topology.h b/arch/x86/include/asm/topology.h index 9c6df4fd9414..2ed234104ef4 100644 --- a/arch/x86/include/asm/topology.h +++ b/arch/x86/include/asm/topology.h @@ -230,9 +230,11 @@ void init_freq_invariance_cppc(void); #ifdef CONFIG_INTEL_THREAD_DIRECTOR int intel_hfi_has_task_classes(void); void intel_hfi_update_task_class(struct task_struct *curr, bool smt_siblings_idle); +int intel_hfi_get_task_class_score(int class, int cpu); #define arch_has_task_classes intel_hfi_has_task_classes #define arch_update_task_class intel_hfi_update_task_class +#define arch_get_task_class_score intel_hfi_get_task_class_score #endif #endif /* _ASM_X86_TOPOLOGY_H */ diff --git a/drivers/thermal/intel/intel_hfi.c b/drivers/thermal/intel/intel_hfi.c index f46d9331f912..1b6072c828ff 100644 --- a/drivers/thermal/intel/intel_hfi.c +++ b/drivers/thermal/intel/intel_hfi.c @@ -205,6 +205,46 @@ void intel_hfi_update_task_class(struct task_struct *curr, bool smt_siblings_idl curr->class = msr.split.classid; } + +static void get_one_hfi_cap(struct hfi_instance *hfi_instance, s16 index, + struct hfi_cpu_data *hfi_caps, int class) +{ + struct hfi_cpu_data *caps; + + /* Find the capabilities of @cpu */ + caps = hfi_instance->data + index * hfi_features.cpu_stride + + class * hfi_features.class_stride; + memcpy(hfi_caps, caps, sizeof(*hfi_caps)); +} + +int intel_hfi_get_task_class_score(int class, int cpu) +{ + struct hfi_cpu_info *info = &per_cpu(hfi_cpu_info, cpu); + struct hfi_instance *instance; + struct hfi_cpu_data caps; + unsigned long flags; + int cap; + + if (cpu < 0 || cpu >= nr_cpu_ids) + return -EINVAL; + + if (class == TASK_CLASS_UNCLASSIFIED) + return -EINVAL; + + if (class >= (int)hfi_features.nr_classes) + return -EINVAL; + + instance = info->hfi_instance; + if (!instance) + return -ENOENT; + + raw_spin_lock_irqsave(&instance->table_lock, flags); + get_one_hfi_cap(instance, info->index, &caps, class); + cap = caps.perf_cap; + raw_spin_unlock_irqrestore(&instance->table_lock, flags); + + return cap; +} #endif /* CONFIG_INTEL_THREAD_DIRECTOR */ static void get_hfi_caps(struct hfi_instance *hfi_instance, -- 2.25.1