From 2e66e8db86d876b28d0f526682875084e9a935b6 Mon Sep 17 00:00:00 2001 From: Marius Vlad Date: Thu, 1 Dec 2016 14:23:58 +0200 Subject: tests/kms_sysfs_edid_timing: Convert sh to C version. The debug output for a HSW machine with two connectors (VGA and HDMI): DEBUG: card0-VGA-1: mean.max 12896229,00ns, 12896,23us, 12,90ms, mean.avg 12785055,80ns, 12785,06us, 12,79ms WARNING: card0-VGA-1: probe time exceed 10ms, max=12,90ms, avg=12,79ms DEBUG: card0-HDMI-A-1: mean.max 781433,00ns, 781,43us, 0,78ms, mean.avg 706643,20ns, 706,64us, 0,71ms v4: - do not include the time opening the fd (Chris Wilson) - include output from debug (Chris Wilson) v3: - use igt_mean for accounting (Chris Wilson) - make it Intel-agnostic when searching for connectors (Chris Wilson) v2: - don't read cached values (Chris Wilson) - warn on per connector, and fail per mean (Chris Wilson) These are synthetic: 10ms per connector, and 50ms for all. Signed-off-by: Marius Vlad Acked-by: Petri Latvala --- tests/kms_sysfs_edid_timing.c | 97 +++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 97 insertions(+) create mode 100644 tests/kms_sysfs_edid_timing.c (limited to 'tests/kms_sysfs_edid_timing.c') diff --git a/tests/kms_sysfs_edid_timing.c b/tests/kms_sysfs_edid_timing.c new file mode 100644 index 00000000..12013881 --- /dev/null +++ b/tests/kms_sysfs_edid_timing.c @@ -0,0 +1,97 @@ +/* + * Copyright © 2016 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.h" + +#include +#include +#include + +#define THRESHOLD_PER_CONNECTOR 10 +#define THRESHOLD_TOTAL 50 +#define CHECK_TIMES 15 + +IGT_TEST_DESCRIPTION("This check the time we take to read the content of all " + "the possible connectors. Without the edid -ENXIO patch " + "(http://permalink.gmane.org/gmane.comp.video.dri.devel/62083), " + "we sometimes take a *really* long time. " + "So let's just check for some reasonable timing here"); + + +igt_simple_main +{ + DIR *dirp; + struct dirent *de; + + dirp = opendir("/sys/class/drm"); + igt_assert(dirp != NULL); + + while ((de = readdir(dirp))) { + struct igt_mean mean = {}; + struct stat st; + char path[PATH_MAX]; + int i; + + if (*de->d_name == '.') + continue;; + + snprintf(path, sizeof(path), "/sys/class/drm/%s/status", + de->d_name); + + if (stat(path, &st)) + continue; + + igt_mean_init(&mean); + for (i = 0; i < CHECK_TIMES; i++) { + struct timespec ts = {}; + int fd; + + if ((fd = open(path, O_WRONLY)) < 0) + continue; + + igt_nsec_elapsed(&ts); + igt_ignore_warn(write(fd, "detect\n", 7)); + igt_mean_add(&mean, igt_nsec_elapsed(&ts)); + + close(fd); + } + + igt_debug("%s: mean.max %.2fns, %.2fus, %.2fms, " + "mean.avg %.2fns, %.2fus, %.2fms\n", + de->d_name, + mean.max, mean.max / 1e3, mean.max / 1e6, + mean.mean, mean.mean / 1e3, mean.mean / 1e6); + + if (mean.max > (THRESHOLD_PER_CONNECTOR * 1e6)) { + igt_warn("%s: probe time exceed 10ms, " + "max=%.2fms, avg=%.2fms\n", de->d_name, + mean.max / 1e6, mean.mean / 1e6); + } + igt_assert_f(mean.mean < (THRESHOLD_TOTAL * 1e6), + "%s: average probe time exceeded 50ms, " + "max=%.2fms, avg=%.2fms\n", de->d_name, + mean.max / 1e6, mean.mean / 1e6); + + } + closedir(dirp); + +} -- cgit v1.2.3