From patchwork Thu Jun 25 15:21:40 2015 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-Patchwork-Submitter: "Lespiau, Damien" X-Patchwork-Id: 6676011 Return-Path: X-Original-To: patchwork-intel-gfx@patchwork.kernel.org Delivered-To: patchwork-parsemail@patchwork2.web.kernel.org Received: from mail.kernel.org (mail.kernel.org [198.145.29.136]) by patchwork2.web.kernel.org (Postfix) with ESMTP id E82F1C05AC for ; Thu, 25 Jun 2015 15:21:49 +0000 (UTC) Received: from mail.kernel.org (localhost [127.0.0.1]) by mail.kernel.org (Postfix) with ESMTP id 3496F206C0 for ; Thu, 25 Jun 2015 15:21:48 +0000 (UTC) Received: from gabe.freedesktop.org (gabe.freedesktop.org [131.252.210.177]) by mail.kernel.org (Postfix) with ESMTP id D8180205DE for ; Thu, 25 Jun 2015 15:21:46 +0000 (UTC) Received: from gabe.freedesktop.org (localhost [127.0.0.1]) by gabe.freedesktop.org (Postfix) with ESMTP id 2EDAC6E4F2; Thu, 25 Jun 2015 08:21:46 -0700 (PDT) X-Original-To: intel-gfx@lists.freedesktop.org Delivered-To: intel-gfx@lists.freedesktop.org Received: from mga03.intel.com (mga03.intel.com [134.134.136.65]) by gabe.freedesktop.org (Postfix) with ESMTP id B8EFE6E4F2 for ; Thu, 25 Jun 2015 08:21:45 -0700 (PDT) Received: from orsmga001.jf.intel.com ([10.7.209.18]) by orsmga103.jf.intel.com with ESMTP; 25 Jun 2015 08:21:45 -0700 X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="5.13,677,1427785200"; d="scan'208";a="717572030" Received: from unknown (HELO strange.ger.corp.intel.com) ([10.252.34.49]) by orsmga001.jf.intel.com with ESMTP; 25 Jun 2015 08:21:45 -0700 From: Damien Lespiau To: intel-gfx@lists.freedesktop.org Date: Thu, 25 Jun 2015 16:21:40 +0100 Message-Id: <1435245703-31083-1-git-send-email-damien.lespiau@intel.com> X-Mailer: git-send-email 2.1.0 MIME-Version: 1.0 Subject: [Intel-gfx] [PATCH i-g-t 1/4] lib: Add a tiny utility function to compute averages X-BeenThere: intel-gfx@lists.freedesktop.org X-Mailman-Version: 2.1.18 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" X-Spam-Status: No, score=-5.6 required=5.0 tests=BAYES_00, RCVD_IN_DNSWL_MED, RP_MATCHES_RCVD, UNPARSEABLE_RELAY autolearn=unavailable version=3.3.1 X-Spam-Checker-Version: SpamAssassin 3.3.1 (2010-03-16) on mail.kernel.org X-Virus-Scanned: ClamAV using ClamSMTP The master plan would be to get a bit more stats in it, at least the standard deviation and confidence interval. Just need the average for now. Signed-off-by: Damien Lespiau --- lib/Makefile.sources | 2 ++ lib/igt_stats.c | 56 ++++++++++++++++++++++++++++++++++++++++++++++ lib/igt_stats.h | 36 +++++++++++++++++++++++++++++ lib/tests/.gitignore | 1 + lib/tests/Makefile.sources | 1 + lib/tests/igt_stats.c | 49 ++++++++++++++++++++++++++++++++++++++++ 6 files changed, 145 insertions(+) create mode 100644 lib/igt_stats.c create mode 100644 lib/igt_stats.h create mode 100644 lib/tests/igt_stats.c diff --git a/lib/Makefile.sources b/lib/Makefile.sources index 85dc321..f8a1b92 100644 --- a/lib/Makefile.sources +++ b/lib/Makefile.sources @@ -12,6 +12,8 @@ libintel_tools_la_SOURCES = \ igt_aux.h \ igt_gt.c \ igt_gt.h \ + igt_stats.c \ + igt_stats.h \ instdone.c \ instdone.h \ intel_batchbuffer.c \ diff --git a/lib/igt_stats.c b/lib/igt_stats.c new file mode 100644 index 0000000..fcf7abe --- /dev/null +++ b/lib/igt_stats.c @@ -0,0 +1,56 @@ +/* + * Copyright © 2015 Intel Corporation + * + * Permission is hereby granted, free of charge, to any person obtaining a + * copy of this software and associated documentation files (the "Software"), + * to deal in the Software without restriction, including without limitation + * the rights to use, copy, modify, merge, publish, distribute, sublicense, + * and/or sell copies of the Software, and to permit persons to whom the + * Software is furnished to do so, subject to the following conditions: + * + * The above copyright notice and this permission notice (including the next + * paragraph) shall be included in all copies or substantial portions of the + * Software. + * + * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR + * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, + * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL + * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER + * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING + * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS + * IN THE SOFTWARE. + * + */ + +#include "igt_core.h" +#include "igt_stats.h" + +void igt_stats_init(igt_stats_t *stats, unsigned int capacity) +{ + stats->values = calloc(capacity, sizeof(*stats->values)); + igt_assert(stats->values); + stats->capacity = capacity; + stats->n_values = 0; +} + +void igt_stats_fini(igt_stats_t *stats) +{ + free(stats->values); +} + +void igt_stats_push(igt_stats_t *stats, uint64_t value) +{ + igt_assert(stats->n_values < stats->capacity); + stats->values[stats->n_values++] = value; +} + +double igt_stats_get_average(igt_stats_t *stats) +{ + unsigned int i; + double a = 0.0; + + for (i = 0; i < stats->n_values; i++) + a += (double)stats->values[i] / stats->n_values; + + return a; +} diff --git a/lib/igt_stats.h b/lib/igt_stats.h new file mode 100644 index 0000000..99dc1c9 --- /dev/null +++ b/lib/igt_stats.h @@ -0,0 +1,36 @@ +/* + * Copyright © 2015 Intel Corporation + * + * Permission is hereby granted, free of charge, to any person obtaining a + * copy of this software and associated documentation files (the "Software"), + * to deal in the Software without restriction, including without limitation + * the rights to use, copy, modify, merge, publish, distribute, sublicense, + * and/or sell copies of the Software, and to permit persons to whom the + * Software is furnished to do so, subject to the following conditions: + * + * The above copyright notice and this permission notice (including the next + * paragraph) shall be included in all copies or substantial portions of the + * Software. + * + * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR + * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, + * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL + * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER + * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING + * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS + * IN THE SOFTWARE. + * + */ + +#include + +typedef struct { + uint64_t *values; + unsigned int capacity; + unsigned int n_values; +} igt_stats_t; + +void igt_stats_init(igt_stats_t *stats, unsigned int capacity); +void igt_stats_fini(igt_stats_t *stats); +void igt_stats_push(igt_stats_t *stats, uint64_t value); +double igt_stats_get_average(igt_stats_t *stats); diff --git a/lib/tests/.gitignore b/lib/tests/.gitignore index a745a23..5b6b3c4 100644 --- a/lib/tests/.gitignore +++ b/lib/tests/.gitignore @@ -7,4 +7,5 @@ igt_no_exit_list_only igt_no_subtest igt_simple_test_subtests igt_simulation +igt_stats igt_timeout diff --git a/lib/tests/Makefile.sources b/lib/tests/Makefile.sources index 10e0617..7521228 100644 --- a/lib/tests/Makefile.sources +++ b/lib/tests/Makefile.sources @@ -6,6 +6,7 @@ check_PROGRAMS = \ igt_no_subtest \ igt_simulation \ igt_simple_test_subtests \ + igt_stats \ igt_timeout \ igt_invalid_subtest_name \ $(NULL) diff --git a/lib/tests/igt_stats.c b/lib/tests/igt_stats.c new file mode 100644 index 0000000..e75a203 --- /dev/null +++ b/lib/tests/igt_stats.c @@ -0,0 +1,49 @@ +/* + * Copyright © 2015 Intel Corporation + * + * Permission is hereby granted, free of charge, to any person obtaining a + * copy of this software and associated documentation files (the "Software"), + * to deal in the Software without restriction, including without limitation + * the rights to use, copy, modify, merge, publish, distribute, sublicense, + * and/or sell copies of the Software, and to permit persons to whom the + * Software is furnished to do so, subject to the following conditions: + * + * The above copyright notice and this permission notice (including the next + * paragraph) shall be included in all copies or substantial portions of the + * Software. + * + * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR + * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, + * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL + * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER + * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING + * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS + * IN THE SOFTWARE. + * + */ + +#include "igt_core.h" +#include "igt_stats.h" + +static void test_average(void) +{ + igt_stats_t stats; + double average; + + igt_stats_init(&stats, 5); + + igt_stats_push(&stats, 2); + igt_stats_push(&stats, 4); + igt_stats_push(&stats, 6); + igt_stats_push(&stats, 8); + igt_stats_push(&stats, 10); + + average = igt_stats_get_average(&stats); + + igt_assert(average == (2 + 4 + 6 + 8 + 10) / 5.); +} + +igt_simple_main +{ + test_average(); +}