From patchwork Sat Jun 27 15:08:07 2015 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: "Lespiau, Damien" X-Patchwork-Id: 6685141 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 92169C05AD for ; Sat, 27 Jun 2015 15:08:55 +0000 (UTC) Received: from mail.kernel.org (localhost [127.0.0.1]) by mail.kernel.org (Postfix) with ESMTP id 9EBA720776 for ; Sat, 27 Jun 2015 15:08:54 +0000 (UTC) Received: from gabe.freedesktop.org (gabe.freedesktop.org [131.252.210.177]) by mail.kernel.org (Postfix) with ESMTP id B6A092076E for ; Sat, 27 Jun 2015 15:08:53 +0000 (UTC) Received: from gabe.freedesktop.org (localhost [127.0.0.1]) by gabe.freedesktop.org (Postfix) with ESMTP id B830E6E730; Sat, 27 Jun 2015 08:08:52 -0700 (PDT) X-Original-To: intel-gfx@lists.freedesktop.org Delivered-To: intel-gfx@lists.freedesktop.org Received: from mga02.intel.com (mga02.intel.com [134.134.136.20]) by gabe.freedesktop.org (Postfix) with ESMTP id 42F806E732 for ; Sat, 27 Jun 2015 08:08:51 -0700 (PDT) Received: from fmsmga003.fm.intel.com ([10.253.24.29]) by orsmga101.jf.intel.com with ESMTP; 27 Jun 2015 08:08:51 -0700 X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="5.13,689,1427785200"; d="scan'208";a="515137072" Received: from kczmudzi-mobl4.amr.corp.intel.com (HELO strange.ger.corp.intel.com) ([10.252.53.243]) by FMSMGA003.fm.intel.com with ESMTP; 27 Jun 2015 08:08:50 -0700 From: Damien Lespiau To: intel-gfx@lists.freedesktop.org Date: Sat, 27 Jun 2015 16:08:07 +0100 Message-Id: <1435417696-28115-10-git-send-email-damien.lespiau@intel.com> X-Mailer: git-send-email 2.1.0 In-Reply-To: <1435417696-28115-1-git-send-email-damien.lespiau@intel.com> References: <1435417696-28115-1-git-send-email-damien.lespiau@intel.com> Subject: [Intel-gfx] [PATCH i-g-t 09/18] stats: Add functions to retrieve min/max values of the dataset 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: , MIME-Version: 1.0 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 Signed-off-by: Damien Lespiau --- lib/igt_stats.c | 33 +++++++++++++++++++++++++++++++++ lib/igt_stats.h | 3 +++ lib/tests/igt_stats.c | 12 ++++++++++++ 3 files changed, 48 insertions(+) diff --git a/lib/igt_stats.c b/lib/igt_stats.c index bd05550..477d204 100644 --- a/lib/igt_stats.c +++ b/lib/igt_stats.c @@ -28,6 +28,8 @@ #include "igt_core.h" #include "igt_stats.h" +#define U64_MAX ((uint64_t)~0ULL) + /** * SECTION:igt_stats * @short_description: Tools for statistical analysis @@ -78,6 +80,9 @@ 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->min = U64_MAX; + stats->max = 0; } /** @@ -151,7 +156,35 @@ void igt_stats_push(igt_stats_t *stats, uint64_t value) { igt_assert(stats->n_values < stats->capacity); stats->values[stats->n_values++] = value; + stats->mean_variance_valid = false; + + if (value < stats->min) + stats->min = value; + if (value > stats->max) + stats->max = value; +} + +/** + * igt_stats_get_min: + * @stats: An #igt_stats_t instance + * + * Retrieves the minimal value in @stats + */ +uint64_t igt_stats_get_min(igt_stats_t *stats) +{ + return stats->min; +} + +/** + * igt_stats_get_max: + * @stats: An #igt_stats_t instance + * + * Retrieves the maximum value in @stats + */ +uint64_t igt_stats_get_max(igt_stats_t *stats) +{ + return stats->max; } /* diff --git a/lib/igt_stats.h b/lib/igt_stats.h index ebc28ca..145b77b 100644 --- a/lib/igt_stats.h +++ b/lib/igt_stats.h @@ -41,6 +41,7 @@ typedef struct { unsigned int capacity; unsigned int is_population : 1; unsigned int mean_variance_valid : 1; + uint64_t min, max; double mean, variance; } igt_stats_t; @@ -49,6 +50,8 @@ void igt_stats_fini(igt_stats_t *stats); bool igt_stats_is_population(igt_stats_t *stats); void igt_stats_set_population(igt_stats_t *stats, bool full_population); void igt_stats_push(igt_stats_t *stats, uint64_t value); +uint64_t igt_stats_get_min(igt_stats_t *stats); +uint64_t igt_stats_get_max(igt_stats_t *stats); double igt_stats_get_mean(igt_stats_t *stats); double igt_stats_get_variance(igt_stats_t *stats); double igt_stats_get_std_deviation(igt_stats_t *stats); diff --git a/lib/tests/igt_stats.c b/lib/tests/igt_stats.c index 6916f25..dc5fe39 100644 --- a/lib/tests/igt_stats.c +++ b/lib/tests/igt_stats.c @@ -57,6 +57,17 @@ static void test_init(void) igt_assert(igt_stats_is_population(&stats) == false); } +static void test_min_max(void) +{ + igt_stats_t stats; + + igt_stats_init(&stats, 5); + push_fixture_1(&stats); + + igt_assert(igt_stats_get_min(&stats) == 2); + igt_assert(igt_stats_get_max(&stats) == 10); +} + static void test_mean(void) { igt_stats_t stats; @@ -127,6 +138,7 @@ igt_simple_main { test_init_zero(); test_init(); + test_min_max(); test_mean(); test_invalidate_mean(); test_std_deviation();