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/*
* 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 <dirent.h>
#include <fcntl.h>
#include <sys/stat.h>
#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);
}
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