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 X-Spam-Level: X-Spam-Status: No, score=-15.7 required=3.0 tests=BAYES_00,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,FREEMAIL_FORGED_FROMDOMAIN,FREEMAIL_FROM, HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_CR_TRAILER,INCLUDES_PATCH, MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS,USER_AGENT_GIT autolearn=ham autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 66B24C433B4 for ; Mon, 3 May 2021 19:35:13 +0000 (UTC) Received: from lists.xenproject.org (lists.xenproject.org [192.237.175.120]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPS id E8BF960FE3 for ; Mon, 3 May 2021 19:35:12 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org E8BF960FE3 Authentication-Results: mail.kernel.org; dmarc=fail (p=none dis=none) header.from=gmail.com Authentication-Results: mail.kernel.org; spf=pass smtp.mailfrom=xen-devel-bounces@lists.xenproject.org Received: from list by lists.xenproject.org with outflank-mailman.121843.229826 (Exim 4.92) (envelope-from ) id 1ldeLO-0007Up-7c; Mon, 03 May 2021 19:35:02 +0000 X-Outflank-Mailman: Message body and most headers restored to incoming version Received: by outflank-mailman (output) from mailman id 121843.229826; Mon, 03 May 2021 19:35:02 +0000 Received: from localhost ([127.0.0.1] helo=lists.xenproject.org) by lists.xenproject.org with esmtp (Exim 4.92) (envelope-from ) id 1ldeLO-0007Ui-4P; Mon, 03 May 2021 19:35:02 +0000 Received: by outflank-mailman (input) for mailman id 121843; Mon, 03 May 2021 19:35:00 +0000 Received: from us1-rack-iad1.inumbo.com ([172.99.69.81]) by lists.xenproject.org with esmtp (Exim 4.92) (envelope-from ) id 1ldeG4-0005i5-KY for xen-devel@lists.xenproject.org; Mon, 03 May 2021 19:29:32 +0000 Received: from mail-qv1-xf2f.google.com (unknown [2607:f8b0:4864:20::f2f]) by us1-rack-iad1.inumbo.com (Halon) with ESMTPS id 8fdb1852-9169-42f7-9597-236b74c2a607; Mon, 03 May 2021 19:28:59 +0000 (UTC) Received: by mail-qv1-xf2f.google.com with SMTP id jm10so3210244qvb.5 for ; Mon, 03 May 2021 12:28:59 -0700 (PDT) Received: from pm2-ws13.praxislan02.com ([2001:470:8:67e:8710:5560:a711:776f]) by smtp.gmail.com with ESMTPSA id g18sm9225209qke.21.2021.05.03.12.28.58 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Mon, 03 May 2021 12:28:58 -0700 (PDT) X-BeenThere: xen-devel@lists.xenproject.org List-Id: Xen developer discussion List-Unsubscribe: , List-Post: List-Help: List-Subscribe: , Errors-To: xen-devel-bounces@lists.xenproject.org Precedence: list Sender: "Xen-devel" X-Inumbo-ID: 8fdb1852-9169-42f7-9597-236b74c2a607 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20161025; h=from:to:cc:subject:date:message-id:in-reply-to:references :mime-version:content-transfer-encoding; bh=SBP/WUCHYsHwmvFvXna4dIQQTPCdqZeigE28a+rXW1E=; b=O6BVnc4qd3xwHDBJXfoQIucfK9gnTGxsJRVTZbya52yOkKK+3zh0/rVotSg+Sl9Hpp Tql0xvakVp3Q29gD1H39GXvBQzEipXCd/8vKYbYfC9b8eILOcHb72QlNF9Nh3PIjmc/z FWZHtDC2IixKzDJ5IbkNZVIG6TZrQbFfMN7UrNco4svOIsNz8xNIj2DD7zD40z/HDIKK cJqcv7PvqopYvl3GimbTVrtMB4SIxB/hPMryBcsl5ZKwcWW2Aqd325ZLdVUXk+KV5te0 1pTIAso0lQiqiDltBky+pPfwXFXPqRtOsrRAtPf0vDlM+ZN1bTIq96pj+CroXFhOVzDe fWcg== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:from:to:cc:subject:date:message-id:in-reply-to :references:mime-version:content-transfer-encoding; bh=SBP/WUCHYsHwmvFvXna4dIQQTPCdqZeigE28a+rXW1E=; b=a58Arko+9KvYrQgPLfaRTRZO8xjMkq8ycF42IjFHPmW5egk3cZcp7RsuwCGAqAdovP kzuUxieFtmiIe8ALXZtut24/emQdDmxMf7ZJmu/1532FXBPOcy/xKtrahwoyCfA8maBh 1NIDegU1R3e+a+FdUe6p+fttEKOrboGaQo0rPpbqucuu+HrhaBpjGSJ7BzUaKCUilkcw x6ABd5YXxpyW616FPZ3+ZsB5QG9wT8JPOIQt3WBNklT5mUFPE8hN45XbDghOr13kTPPp E72XsmlTwt9fVQLGRCQXXJGsadSvo5rUQ9sVnEwYaEKkbKIUNnVoOa6kDIZ7XbjkIBHn aICg== X-Gm-Message-State: AOAM531rnk1IDXK6CIn8Bw0IaSuDYbJMbNSjXQbMpgwB4eXdEWIOssRI h9sh9ixh3/zf3vNfjoqMZKSd450OGPM= X-Google-Smtp-Source: ABdhPJw9qRujRfcqvQQOj/Nh1hz+fW3OuLKeqluU/Upmh5MZLqNoVIeI+WS4P/Ajl4B+ngqLCxMG+A== X-Received: by 2002:a0c:c488:: with SMTP id u8mr21113740qvi.47.1620070139057; Mon, 03 May 2021 12:28:59 -0700 (PDT) From: Jason Andryuk To: xen-devel@lists.xenproject.org Cc: Jason Andryuk , Ian Jackson , Wei Liu Subject: [PATCH 12/13] xenpm: Add set-cpufreq-hwp subcommand Date: Mon, 3 May 2021 15:28:09 -0400 Message-Id: <20210503192810.36084-13-jandryuk@gmail.com> X-Mailer: git-send-email 2.30.2 In-Reply-To: <20210503192810.36084-1-jandryuk@gmail.com> References: <20210503192810.36084-1-jandryuk@gmail.com> MIME-Version: 1.0 Content-Transfer-Encoding: 8bit set-cpufreq-hwp allows setting the Hardware P-State (HWP) parameters. It can be run on all or just a single cpu. There are presets of balance, powersave & performance. Those can be further tweaked by param:val arguments as explained in the usage description. Parameter names are just checked to the first 3 characters to shorten typing. Some options are hardware dependent, and ranges can be found in get-cpufreq-para. Signed-off-by: Jason Andryuk --- tools/misc/xenpm.c | 240 +++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 240 insertions(+) diff --git a/tools/misc/xenpm.c b/tools/misc/xenpm.c index a686f8f46e..d3bcaf3b58 100644 --- a/tools/misc/xenpm.c +++ b/tools/misc/xenpm.c @@ -67,6 +67,25 @@ void show_help(void) " set-max-cstate |'unlimited' [|'unlimited']\n" " set the C-State limitation ( >= 0) and\n" " optionally the C-sub-state limitation ( >= 0)\n" + " set-cpufreq-hwp [cpuid] [balance|performance|powersave] *\n" + " set Hardware P-State (HWP) parameters\n" + " optionally a preset of one of\n" + " balance|performance|powersave\n" + " an optional list of param:val arguments\n" + " minimum:N hw_lowest ... hw_highest\n" + " maximum:N hw_lowest ... hw_highest\n" + " desired:N hw_lowest ... hw_highest\n" + " Set explicit performance target.\n" + " non-zero disables auto-HWP mode.\n" + " energy_perf:0-255 (or 0-15)\n" + " energy/performance hint\n" + " lower favor performance\n" + " higher favor powersave\n" + " 127 (or 7) balance\n" + " act_window:N{,m,u}s range 0us-1270s\n" + " window for internal calculations.\n" + " 0 lets the hardware decide.\n" + " get-cpufreq-para returns hw_lowest/highest.\n" " start [seconds] start collect Cx/Px statistics,\n" " output after CTRL-C or SIGINT or several seconds.\n" " enable-turbo-mode [cpuid] enable Turbo Mode for processors that support it.\n" @@ -1309,6 +1328,226 @@ void disable_turbo_mode(int argc, char *argv[]) errno, strerror(errno)); } +/* + * Parse activity_window:NNN{us,ms,s} and validate range. + * + * Activity window is a 7bit mantissa (0-127) with a 3bit exponent (0-7) base + * 10 in microseconds. So the range is 1 microsecond to 1270 seconds. A value + * of 0 lets the hardware autonomously select the window. + * + * Return 0 on success + * -1 on error + * 1 Not activity_window. i.e. try parsing as another argument + */ +static int parse_activity_window(xc_set_hwp_para_t *set_hwp, char *p) +{ + char *param = NULL, *val = NULL, *suffix = NULL; + unsigned int u; + unsigned int exponent = 0; + unsigned int multiplier = 1; + int ret; + + ret = sscanf(p, "%m[a-z_A-Z]:%ms", ¶m, &val); + if ( ret != 2 ) + { + return -1; + } + + if ( strncasecmp(param, "act", 3) != 0 ) + { + ret = 1; + + goto out; + } + + free(param); + param = NULL; + + ret = sscanf(val, "%u%ms", &u, &suffix); + if ( ret != 1 && ret != 2 ) + { + fprintf(stderr, "invalid activity window: %s\n", val); + + ret = -1; + + goto out; + } + + if ( ret == 2 && suffix ) + { + if ( strcasecmp(suffix, "s") == 0 ) + { + multiplier = 1000 * 1000; + exponent = 6; + } + else if ( strcasecmp(suffix, "ms") == 0 ) + { + multiplier = 1000; + exponent = 3; + } + else if ( strcasecmp(suffix, "us") == 0 ) + { + multiplier = 1; + exponent = 0; + } + else + { + fprintf(stderr, "invalid activity window units: %s\n", suffix); + + ret = -1; + goto out; + } + } + + if ( u > 1270 * 1000 * 1000 / multiplier ) + { + fprintf(stderr, "activity window %s too large\n", val); + + ret = -1; + goto out; + } + + /* looking for 7 bits of mantissa and 3 bits of exponent */ + while ( u > 127 ) + { + u /= 10; + exponent += 1; + } + + set_hwp->activity_window = ( exponent & 0x7 ) << 7 | ( u & 0x7f ); + set_hwp->set_params |= XEN_SYSCTL_HWP_SET_ACT_WINDOW; + + ret = 0; + + out: + free(suffix); + free(param); + free(val); + + return ret; +} + +static int parse_hwp_opts(xc_set_hwp_para_t *set_hwp, int *cpuid, + int argc, char *argv[]) +{ + int i = 0; + + if ( argc < 1 ) + return -1; + + if ( parse_cpuid_non_fatal(argv[i], cpuid) == 0 ) + { + i++; + } + + if ( i == argc ) + return -1; + + if ( strcasecmp(argv[i], "powersave") == 0 ) + { + set_hwp->set_params = XEN_SYSCTL_HWP_SET_PRESET_POWERSAVE; + i++; + } + else if ( strcasecmp(argv[i], "performance") == 0 ) + { + set_hwp->set_params = XEN_SYSCTL_HWP_SET_PRESET_PERFORMANCE; + i++; + } + else if ( strcasecmp(argv[i], "balance") == 0 ) + { + set_hwp->set_params = XEN_SYSCTL_HWP_SET_PRESET_BALANCE; + i++; + } + + for ( ; i < argc; i++) + { + unsigned int val; + char *param; + int ret; + + ret = parse_activity_window(set_hwp, argv[i]); + switch ( ret ) + { + case -1: + return -1; + case 0: + continue; + break; + case 1: + /* try other parsing */ + break; + } + + /* sscanf can't handle split on ':' for "%ms:%u' */ + ret = sscanf(argv[i], "%m[a-zA-Z_]:%u", ¶m, &val); + if ( ret != 2 ) + { + fprintf(stderr, "%s is an invalid hwp parameter.\n", argv[i]); + return -1; + } + + if ( val > 255 ) + { + fprintf(stderr, "%s value %u is out of range.\n", param, val); + return -1; + } + + if ( strncasecmp(param, "min", 3) == 0 ) + { + set_hwp->minimum = val; + set_hwp->set_params |= XEN_SYSCTL_HWP_SET_MINIMUM; + } + else if ( strncasecmp(param, "max", 3) == 0 ) + { + set_hwp->maximum = val; + set_hwp->set_params |= XEN_SYSCTL_HWP_SET_MAXIMUM; + } + else if ( strncasecmp(param, "des", 3) == 0 ) + { + set_hwp->desired = val; + set_hwp->set_params |= XEN_SYSCTL_HWP_SET_DESIRED; + } + else if ( strncasecmp(param, "ene", 3) == 0 ) + { + set_hwp->energy_perf = val; + set_hwp->set_params |= XEN_SYSCTL_HWP_SET_ENERGY_PERF; + } + else + { + fprintf(stderr, "%s is an invalid parameter\n.", param); + return -1; + } + + free(param); + } + + return 0; +} + +static void hwp_set_func(int argc, char *argv[]) +{ + xc_set_hwp_para_t set_hwp = {}; + int cpuid = -1; + int i = 0; + + if ( parse_hwp_opts(&set_hwp, &cpuid, argc, argv) ) + { + fprintf(stderr, "Missing, excess, or invalid argument(s)\n"); + exit(EINVAL); + } + + if ( cpuid != -1 ) + { + i = cpuid; + max_cpu_nr = i + 1; + } + + for ( ; i < max_cpu_nr; i++ ) + if ( xc_set_cpufreq_hwp(xc_handle, i, &set_hwp) ) + fprintf(stderr, "[CPU%d] failed to set hwp params (%d - %s)\n", + i, errno, strerror(errno)); +} + struct { const char *name; void (*function)(int argc, char *argv[]); @@ -1319,6 +1558,7 @@ struct { { "get-cpufreq-average", cpufreq_func }, { "start", start_gather_func }, { "get-cpufreq-para", cpufreq_para_func }, + { "set-cpufreq-hwp", hwp_set_func }, { "set-scaling-maxfreq", scaling_max_freq_func }, { "set-scaling-minfreq", scaling_min_freq_func }, { "set-scaling-governor", scaling_governor_func }, -- 2.30.2