mirror of
https://github.com/tiagovignatti/intel-gpu-tools.git
synced 2025-06-21 14:56:18 +00:00
a572fb15f3
The temporary vars only obfuscated things, so get rid of them. Also remove some redundant asserts and info messages. The only functional change is that the counter delta will be checked only against a percentage based accuracy range (90%-100%) and not against a hard-coded limit (RC6_FUDGE). The two checks serve the same purpose and the former one is clearer. Signed-off-by: Imre Deak <imre.deak@intel.com> Acked-by: Daniel Vetter <daniel.vetter@ffwll.ch>
144 lines
3.9 KiB
C
144 lines
3.9 KiB
C
/*
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* Copyright © 2012 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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* Authors:
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* Ben Widawsky <ben@bwidawsk.net>
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*
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*/
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#define _GNU_SOURCE
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#include <stdio.h>
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#include <stdlib.h>
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#include <string.h>
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#include <unistd.h>
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#include <errno.h>
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#include "drmtest.h"
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#include "intel_chipset.h"
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#define SLEEP_DURATION 3000 // in milliseconds
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#define CODE_TIME 50 // in microseconfs
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static unsigned int readit(const char *path)
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{
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unsigned int ret;
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int scanned;
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FILE *file;
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file = fopen(path, "r");
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igt_assert(file);
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scanned = fscanf(file, "%u", &ret);
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igt_assert_eq(scanned, 1);
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fclose(file);
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return ret;
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}
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static void read_rc6_residency( int value[], const char *name_of_rc6_residency)
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{
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unsigned int i;
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const int device = drm_get_card();
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char *path ;
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int ret;
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FILE *file;
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/* For some reason my ivb isn't idle even after syncing up with the gpu.
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* Let's add a sleept just to make it happy. */
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sleep(5);
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ret = asprintf(&path, "/sys/class/drm/card%d/power/rc6_enable", device);
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igt_assert_neq(ret, -1);
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file = fopen(path, "r");
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igt_require(file);
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/* claim success if no rc6 enabled. */
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if (readit(path) == 0)
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igt_success();
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for(i = 0; i < 2; i++)
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{
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sleep(SLEEP_DURATION / 1000);
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ret = asprintf(&path, "/sys/class/drm/card%d/power/%s_residency_ms",device,name_of_rc6_residency);
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igt_assert_neq(ret, -1);
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value[i] = readit(path);
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}
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free(path);
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}
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static void residency_accuracy(int value[],const char *name_of_rc6_residency)
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{
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unsigned int diff;
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double ratio;
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diff = value[1] - value[0];
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ratio = (double)diff / (SLEEP_DURATION + CODE_TIME);
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igt_info("Residency in %s or deeper state: %u ms (ratio to expected duration: %.02f)\n",
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name_of_rc6_residency, diff, ratio);
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igt_assert_f(ratio > 0.9 && ratio <= 1,
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"Sysfs RC6 residency counter is inaccurate.\n");
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}
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igt_main
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{
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int fd;
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int devid = 0;
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int rc6[2], rc6p[2], rc6pp[2], media[2];
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igt_skip_on_simulation();
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/* Use drm_open_any to verify device existence */
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igt_fixture {
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fd = drm_open_any();
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devid = intel_get_drm_devid(fd);
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close(fd);
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read_rc6_residency(rc6, "rc6");
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if (IS_VALLEYVIEW(devid) || IS_CHERRYVIEW(devid))
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read_rc6_residency(media, "media_rc6");
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if (IS_GEN6(devid) || IS_IVYBRIDGE(devid)) {
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read_rc6_residency(rc6p, "rc6p");
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read_rc6_residency(rc6pp, "rc6pp");
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}
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}
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igt_subtest("rc6-accuracy")
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residency_accuracy(rc6, "rc6");
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igt_subtest("media-rc6-accuracy")
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if (IS_VALLEYVIEW(devid) || IS_CHERRYVIEW(devid))
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residency_accuracy(media, "media_rc6");
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igt_subtest("rc6p-accuracy") {
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if (!IS_GEN6(devid) && !IS_IVYBRIDGE(devid))
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igt_skip("This platform doesn't support RC6p\n");
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residency_accuracy(rc6p, "rc6p");
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}
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igt_subtest("rc6pp-accuracy") {
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if (!IS_GEN6(devid) && !IS_IVYBRIDGE(devid))
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igt_skip("This platform doesn't support RC6pp\n");
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residency_accuracy(rc6pp, "rc6pp");
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}
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}
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