From patchwork Thu Nov 9 10:14:37 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Vincent Guittot X-Patchwork-Id: 743038 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 B5CFDC04E88 for ; Thu, 9 Nov 2023 10:15:14 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S233958AbjKIKPP (ORCPT ); Thu, 9 Nov 2023 05:15:15 -0500 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:42744 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S233433AbjKIKPK (ORCPT ); Thu, 9 Nov 2023 05:15:10 -0500 Received: from mail-wm1-x32a.google.com (mail-wm1-x32a.google.com [IPv6:2a00:1450:4864:20::32a]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 25FAA30E4 for ; Thu, 9 Nov 2023 02:14:59 -0800 (PST) Received: by mail-wm1-x32a.google.com with SMTP id 5b1f17b1804b1-4083f613272so4798525e9.1 for ; Thu, 09 Nov 2023 02:14:58 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linaro.org; s=google; t=1699524897; x=1700129697; darn=vger.kernel.org; h=content-transfer-encoding:mime-version:references:in-reply-to :message-id:date:subject:cc:to:from:from:to:cc:subject:date :message-id:reply-to; bh=PRZuGgttIdjMzTtOY1KLieaDHjYgH97fC7jzr+fvVqo=; b=gBsWdZ++s0+LbDVr6pkTEDUcxoNovypRYVpvgDcsB2PaAFhT4bGmgI866JjQnZbZqL kXIdaKl1KymtebNa3pakFi5d5BDfcB0BW4wtCL8C+6wkV1VbKgNWhbhbQYaI+F2zEKoi FNuODtaNQ9p9sLxo1EhL/UdusZfedmzToInJ9JDcq8c87vRtd3mmilrQFB7U5Yg3ltjF xWF6NhOopvSjKhiVV4GzU3bMHctjkZe1xabLr6duAJUj8Ch05mz3gBT+dcL8uWJ4MK8W /5eHFmXq7GWJ1Q/8UtmT1HBQ4s7x6QqkfS0VQoRXjfcdtp5n7trE55apN+XJvRtPLlfm 6Zvw== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1699524897; x=1700129697; h=content-transfer-encoding:mime-version:references:in-reply-to :message-id:date:subject:cc:to:from:x-gm-message-state:from:to:cc :subject:date:message-id:reply-to; bh=PRZuGgttIdjMzTtOY1KLieaDHjYgH97fC7jzr+fvVqo=; b=qZhhwaGYpZ2l1SBCdczigjXCS63Gt+2wPbqEQvH9RlVxSivKXuHt9vxqPYqVJFp1cI Qde8TQUJdgvO21gy0lSMFBFXKQNtsIvv8o6h8+CSyeSXFmHchZFAYkfGKBQdfWe5V95m fGOHG41/H2BjjlfROAp6k7mYvxqD+fcBuHiZSfV2wkXrNTX8z1t0Jz3f2A7gp4uQEbYN vDuAUUTJUh+mYJy6PXOuraIoN4nf/U+r5HwZGV0rPSqXz2Ijf+M75eCe1yAdsFWqVE3o CC7XuP4MY3tPVgo5ginoW/7shAeXfkA0Zht0FMBFkEah3GGs+H4q1OTMpvogkjm395E5 8/Lw== X-Gm-Message-State: AOJu0YzAS6LW6vom98CfdepjP2ZnnX6oSxtNaPbVMtelYAWe+05itng/ GRxd+Xm3ZOPqSDwY1/kI/xQD3A== X-Google-Smtp-Source: AGHT+IFErHhK3dv93vXA3skdZjBc12KSv8yFV05cQNNZGn5wIgqPMa1zCHFgcuaqbLUWzLMBHHtZSA== X-Received: by 2002:a05:600c:138b:b0:407:5b7c:2f6a with SMTP id u11-20020a05600c138b00b004075b7c2f6amr3739930wmf.0.1699524897543; Thu, 09 Nov 2023 02:14:57 -0800 (PST) Received: from vingu-book.. ([2a01:e0a:f:6020:26e5:c6da:63bc:dd99]) by smtp.gmail.com with ESMTPSA id m17-20020a05600c4f5100b003fefb94ccc9sm1611816wmq.11.2023.11.09.02.14.55 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Thu, 09 Nov 2023 02:14:57 -0800 (PST) From: Vincent Guittot To: linux@armlinux.org.uk, catalin.marinas@arm.com, will@kernel.org, paul.walmsley@sifive.com, palmer@dabbelt.com, aou@eecs.berkeley.edu, sudeep.holla@arm.com, gregkh@linuxfoundation.org, rafael@kernel.org, mingo@redhat.com, peterz@infradead.org, juri.lelli@redhat.com, dietmar.eggemann@arm.com, rostedt@goodmis.org, bsegall@google.com, mgorman@suse.de, bristot@redhat.com, vschneid@redhat.com, viresh.kumar@linaro.org, lenb@kernel.org, robert.moore@intel.com, lukasz.luba@arm.com, ionela.voinescu@arm.com, pierre.gondois@arm.com, beata.michalska@arm.com, linux-arm-kernel@lists.infradead.org, linux-kernel@vger.kernel.org, linux-riscv@lists.infradead.org, linux-pm@vger.kernel.org, linux-acpi@vger.kernel.org Cc: conor.dooley@microchip.com, suagrfillet@gmail.com, ajones@ventanamicro.com, lftan@kernel.org, Vincent Guittot Subject: [PATCH v6 6/7] cpufreq/cppc: Set the frequency used for computing the capacity Date: Thu, 9 Nov 2023 11:14:37 +0100 Message-Id: <20231109101438.1139696-7-vincent.guittot@linaro.org> X-Mailer: git-send-email 2.34.1 In-Reply-To: <20231109101438.1139696-1-vincent.guittot@linaro.org> References: <20231109101438.1139696-1-vincent.guittot@linaro.org> MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: linux-pm@vger.kernel.org Save the frequency associated to the performance that has been used when initializing the capacity of CPUs. Also, cppc cpufreq driver can register an artificial energy model. In such case, it needs the frequency for this compute capacity. Signed-off-by: Vincent Guittot Acked-by: Sudeep Holla --- drivers/base/arch_topology.c | 15 ++++++++++++++- 1 file changed, 14 insertions(+), 1 deletion(-) diff --git a/drivers/base/arch_topology.c b/drivers/base/arch_topology.c index e8d1cdf1f761..0a2e43728286 100644 --- a/drivers/base/arch_topology.c +++ b/drivers/base/arch_topology.c @@ -349,6 +349,7 @@ bool __init topology_parse_cpu_capacity(struct device_node *cpu_node, int cpu) void topology_init_cpu_capacity_cppc(void) { + u64 capacity, capacity_scale = 0; struct cppc_perf_caps perf_caps; int cpu; @@ -365,6 +366,10 @@ void topology_init_cpu_capacity_cppc(void) (perf_caps.highest_perf >= perf_caps.nominal_perf) && (perf_caps.highest_perf >= perf_caps.lowest_perf)) { raw_capacity[cpu] = perf_caps.highest_perf; + capacity_scale = max_t(u64, capacity_scale, raw_capacity[cpu]); + + per_cpu(capacity_freq_ref, cpu) = cppc_perf_to_khz(&perf_caps, raw_capacity[cpu]); + pr_debug("cpu_capacity: CPU%d cpu_capacity=%u (raw).\n", cpu, raw_capacity[cpu]); continue; @@ -375,7 +380,15 @@ void topology_init_cpu_capacity_cppc(void) goto exit; } - topology_normalize_cpu_scale(); + for_each_possible_cpu(cpu) { + capacity = raw_capacity[cpu]; + capacity = div64_u64(capacity << SCHED_CAPACITY_SHIFT, + capacity_scale); + topology_set_cpu_scale(cpu, capacity); + pr_debug("cpu_capacity: CPU%d cpu_capacity=%lu\n", + cpu, topology_get_cpu_scale(cpu)); + } + schedule_work(&update_topology_flags_work); pr_debug("cpu_capacity: cpu_capacity initialization done\n");