From patchwork Mon Jan 27 08:14:01 2025 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: "Belgaumkar, Vinay" X-Patchwork-Id: 13951061 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 gabe.freedesktop.org (gabe.freedesktop.org [131.252.210.177]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.lore.kernel.org (Postfix) with ESMTPS id 866E2C02190 for ; Mon, 27 Jan 2025 08:17:43 +0000 (UTC) Received: from gabe.freedesktop.org (localhost [127.0.0.1]) by gabe.freedesktop.org (Postfix) with ESMTP id 2B59510E4D4; Mon, 27 Jan 2025 08:17:43 +0000 (UTC) Authentication-Results: gabe.freedesktop.org; dkim=pass (2048-bit key; unprotected) header.d=intel.com header.i=@intel.com header.b="R3t5w6Vv"; dkim-atps=neutral Received: from mgamail.intel.com (mgamail.intel.com [198.175.65.9]) by gabe.freedesktop.org (Postfix) with ESMTPS id 5D22610E4D2; Mon, 27 Jan 2025 08:17:41 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=intel.com; i=@intel.com; q=dns/txt; s=Intel; t=1737965862; x=1769501862; h=from:to:cc:subject:date:message-id:in-reply-to: references:mime-version:content-transfer-encoding; bh=VZ2fibgXsy8KNmW5iI/YsxNCZ41X3z975CXNPPTD0JM=; b=R3t5w6Vv+JQy6nGnRmvJKPcZLmUHq1fPvUoeEdalu8pC0lk5fQJfnaoI sJwIl7xQA8wfltr1bG1/tyUNcsF7PRsNq8N+has0ef8xoOlrz3WtfhNiH iXTati6VeGSSUE4EVh+zIvuZEeF2S1DVuTL8UCfnP0EhKZZvmhb7gAbuw 1JFBQ+SKgGgfK50AMiNEzSjQ7F3uivID7fw/MQcaSKrxAupaX1tB3N6+z qN/CSlfG8TYuGaoD5yrsF/Om3bIsd/eN8THq6xPsx5mh7D2wJcJHU3Ttb 4SG5FqQQ+o9PGXe7IRFiXIejNKKEtCYCz5b+JXS1xVdxHwbawpjadhyps w==; X-CSE-ConnectionGUID: uv3wJEqkT+i53WcZxY2mvg== X-CSE-MsgGUID: LbJ45xsTSgSicB69dYqk8Q== X-IronPort-AV: E=McAfee;i="6700,10204,11327"; a="60883649" X-IronPort-AV: E=Sophos;i="6.13,237,1732608000"; d="scan'208";a="60883649" Received: from orviesa006.jf.intel.com ([10.64.159.146]) by orvoesa101.jf.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 27 Jan 2025 00:17:42 -0800 X-CSE-ConnectionGUID: dA/VxNJTSc+GIdvdFSzC+g== X-CSE-MsgGUID: iFSbRH3ZQKiabAJ9Ixl+HA== X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="6.13,237,1732608000"; d="scan'208";a="108342457" Received: from vbelgaum-ubuntu.fm.intel.com ([10.1.39.141]) by orviesa006.jf.intel.com with ESMTP; 27 Jan 2025 00:17:41 -0800 From: Vinay Belgaumkar To: intel-gfx@lists.freedesktop.org, igt-dev@lists.freedesktop.org Cc: Vinay Belgaumkar , Lucas De Marchi , Kamil Konieczny , Rodrigo Vivi Subject: [PATCH i-g-t v4 1/2] lib/igt_perf: Add utils to extract PMU event info Date: Mon, 27 Jan 2025 00:14:01 -0800 Message-Id: <20250127081402.2587605-2-vinay.belgaumkar@intel.com> X-Mailer: git-send-email 2.38.1 In-Reply-To: <20250127081402.2587605-1-vinay.belgaumkar@intel.com> References: <20250127081402.2587605-1-vinay.belgaumkar@intel.com> MIME-Version: 1.0 X-BeenThere: intel-gfx@lists.freedesktop.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Intel graphics driver community testing & development List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: intel-gfx-bounces@lists.freedesktop.org Sender: "Intel-gfx" Functions to parse event ID and GT bit shift for PMU events. Cc: Lucas De Marchi Cc: Kamil Konieczny Cc: Rodrigo Vivi Signed-off-by: Vinay Belgaumkar --- lib/igt_perf.c | 68 ++++++++++++++++++++++++++++++++++++++++++++++++++ lib/igt_perf.h | 2 ++ 2 files changed, 70 insertions(+) diff --git a/lib/igt_perf.c b/lib/igt_perf.c index 3866c6d77..e333744bb 100644 --- a/lib/igt_perf.c +++ b/lib/igt_perf.c @@ -92,6 +92,74 @@ const char *xe_perf_device(int xe, char *buf, int buflen) return buf; } +/** + * perf_xe_event_format_gt: Returns the start position of GT id in the event format + * @device: Device string in driver:pci format + * Returns: Start bit for GT id + * + */ +int perf_xe_event_format_gt(const char *device) +{ + char buf[150]; + ssize_t ret; + int fd, start, end; + + snprintf(buf, sizeof(buf), + "/sys/bus/event_source/devices/%s/format/gt", + device); + + fd = open(buf, O_RDONLY); + if (fd < 0) + return -EINVAL; + + ret = read(fd, buf, sizeof(buf) - 1); + close(fd); + if (ret < 1) + return ret; + + buf[ret] = '\0'; + ret = sscanf(buf, "config:%d-%d", &start, &end); + if (ret != 2) + return -EINVAL; + + return start; +} + +/** + * perf_xe_event_config: + * @device: Device string in driver:pci format + * @event: The event name + * @config: Pointer to the config + * Returns: 0 for success, negative value on error + */ +int perf_xe_event_config(const char *device, const char *event, uint64_t *config) +{ + char buf[150]; + ssize_t ret; + int fd; + + snprintf(buf, sizeof(buf), + "/sys/bus/event_source/devices/%s/events/%s", + device, + event); + + fd = open(buf, O_RDONLY); + if (fd < 0) + return -EINVAL; + + ret = read(fd, buf, sizeof(buf) - 1); + close(fd); + if (ret < 1) + return ret; + + buf[ret] = '\0'; + ret = sscanf(buf, "config=0x%lx", config); + if (ret != 1) + return -EINVAL; + + return 0; +} + uint64_t xe_perf_type_id(int xe) { char buf[80]; diff --git a/lib/igt_perf.h b/lib/igt_perf.h index 3d9ba2917..f51c44bb2 100644 --- a/lib/igt_perf.h +++ b/lib/igt_perf.h @@ -71,5 +71,7 @@ int perf_i915_open(int i915, uint64_t config); int perf_i915_open_group(int i915, uint64_t config, int group); int perf_xe_open(int xe, uint64_t config); +int perf_xe_event_config(const char *device, const char *event, uint64_t *config); +int perf_xe_event_format_gt(const char *device); #endif /* I915_PERF_H */