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98 lines
2.9 KiB
98 lines
2.9 KiB
/*
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* Copyright © 2016 Intel Corporation
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*
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* Permission is hereby granted, free of charge, to any person obtaining a
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* copy of this software and associated documentation files (the "Software"),
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* to deal in the Software without restriction, including without limitation
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* the rights to use, copy, modify, merge, publish, distribute, sublicense,
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* and/or sell copies of the Software, and to permit persons to whom the
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* Software is furnished to do so, subject to the following conditions:
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*
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* The above copyright notice and this permission notice (including the next
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* paragraph) shall be included in all copies or substantial portions of the
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* Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
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* THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
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* FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS
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* IN THE SOFTWARE.
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*/
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#include "igt.h"
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#include <dirent.h>
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#include <fcntl.h>
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#include <sys/stat.h>
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#define THRESHOLD_PER_CONNECTOR 10
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#define THRESHOLD_TOTAL 50
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#define CHECK_TIMES 15
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IGT_TEST_DESCRIPTION("This check the time we take to read the content of all "
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"the possible connectors. Without the edid -ENXIO patch "
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"(http://permalink.gmane.org/gmane.comp.video.dri.devel/62083), "
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"we sometimes take a *really* long time. "
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"So let's just check for some reasonable timing here");
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igt_simple_main
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{
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DIR *dirp;
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struct dirent *de;
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dirp = opendir("/sys/class/drm");
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igt_assert(dirp != NULL);
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while ((de = readdir(dirp))) {
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struct igt_mean mean = {};
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struct stat st;
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char path[PATH_MAX];
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int i;
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if (*de->d_name == '.')
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continue;;
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snprintf(path, sizeof(path), "/sys/class/drm/%s/status",
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de->d_name);
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if (stat(path, &st))
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continue;
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igt_mean_init(&mean);
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for (i = 0; i < CHECK_TIMES; i++) {
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struct timespec ts = {};
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int fd;
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if ((fd = open(path, O_WRONLY)) < 0)
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continue;
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igt_nsec_elapsed(&ts);
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igt_ignore_warn(write(fd, "detect\n", 7));
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igt_mean_add(&mean, igt_nsec_elapsed(&ts));
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close(fd);
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}
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igt_debug("%s: mean.max %.2fns, %.2fus, %.2fms, "
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"mean.avg %.2fns, %.2fus, %.2fms\n",
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de->d_name,
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mean.max, mean.max / 1e3, mean.max / 1e6,
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mean.mean, mean.mean / 1e3, mean.mean / 1e6);
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if (mean.max > (THRESHOLD_PER_CONNECTOR * 1e6)) {
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igt_warn("%s: probe time exceed 10ms, "
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"max=%.2fms, avg=%.2fms\n", de->d_name,
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mean.max / 1e6, mean.mean / 1e6);
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}
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igt_assert_f(mean.mean < (THRESHOLD_TOTAL * 1e6),
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"%s: average probe time exceeded 50ms, "
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"max=%.2fms, avg=%.2fms\n", de->d_name,
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mean.max / 1e6, mean.mean / 1e6);
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}
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closedir(dirp);
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}
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