[Intel-gfx] [PATCH] [I-G-T]Add rc6_residency_counter subtest
Daniel Vetter
daniel at ffwll.ch
Thu Jun 5 11:01:41 CEST 2014
On Thu, Jun 05, 2014 at 10:27:42AM +0800, Wendy Wang wrote:
> Move rc6_residency_check to subtest, add new rc6_residency_counter subtest
> for pm_rc6_residency IGT case.
I don't really understand what you're trying to do here really. Please
explain better in the commit message not just what the patch does, but
_why_ we need this new subtest.
Also the conversion to tests with subtests has a few issues:
- Everything outside of subtests that touches hw state must be wrapped in
igt_fixture.
- You didn't move the test to the multi-test target in Makefile.sources.
- It looks like the 2nd subtest depends upon the first, they must be
independent.
- Your new tests uses igt_assert where it probably should use igt_skip or
something similar.
Please test that the subtest enumeration works correctly:
- With parameter --list all subtest should be enumareated, but nothing
else. This _must_ work as non-root on non-intel machines.
- Subtests must work individually, you can run them with --run-subtest
<name>
Cheers, Daniel
>
> Test results run on platforms show as below:
> On HSW
> ---------------------------------------
> [root at x-hswu opt]# ./pm_rc6_residency
> IGT-Version: 1.6-g35b31df (x86_64) (Linux: 3.15.0-rc3_drm-intel-nightly_0791a3_20140520+ x86_64)
> Subtest rc6-residency-check: SUCCESS
> This machine doesn't support rc6pp
> This machine doesn't support rc6p
> This machine entry rc6 status.
> The residency counter : 0.999667
> Subtest rc6-residency-counter: SUCCESS
>
> On IVB
> ----------------------------------------
> [root at IVB tests]# ./pm_rc6_residency
> IGT-Version: 1.6-g35b31df (x86_64) (Linux: 3.13.6_20140318+ x86_64)
> Subtest rc6-residency-check: SUCCESS
> This machine entry rc6p status.
> The residency counter : 0.997000
> Subtest rc6-residency-counter: SUCCESS
>
> On BYT
> ----------------------------------------
> root at x-byt:/opt# ./pm_rc6_residency
> IGT-Version: 1.6-g0d39021 (x86_64) (Linux: 3.14.0_kcloud_ceabbb_20140521+ x86_64)
> Subtest rc6-residency-check: SUCCESS
> This machine doesn't support rc6pp
> This machine doesn't support rc6p
> The residency counter : 1.144333
> Test assertion failure function rc6_residency_counter, file pm_rc6_residency.c:131:
> Last errno: 0, Success
> Failed assertion: counter_result <=1
> Debug files must be wrong,
> Subtest rc6-residency-counter: FAIL
>
> On BDW
> ---------------------------------------
> [root at x-bdw01 opt]# ./pm_rc6_residency
> IGT-Version: 1.6-g0d39021 (x86_64) (Linux: 3.15.0-rc5_drm-intel-nightly_367653_20140521+ x86_64)
> Subtest rc6-residency-check: SUCCESS
> This machine doesn't support rc6pp
> This machine doesn't support rc6p
> The residency counter : 0.994333
> This machine entry rc6 state.
> Subtest rc6-residency-counter: SUCCESS
>
> Signed-off-by: Liu, Lei A <lei.a.liu at intel.com>, Wendy Wang <wendy.wang at intel.com>
> Signed-off-by: Wendy Wang <wendy.wang at intel.com>
>
> diff --git a/tests/pm_rc6_residency.c b/tests/pm_rc6_residency.c
> index 197ab00..550e3ad 100644
> --- a/tests/pm_rc6_residency.c
> +++ b/tests/pm_rc6_residency.c
> @@ -34,9 +34,11 @@
>
> #include "drmtest.h"
>
> +#define NUMBER_OF_RC6_RESIDENCY 3
> #define SLEEP_DURATION 3000 // in milliseconds
> #define RC6_FUDGE 900 // in milliseconds
>
> +
> static unsigned int readit(const char *path)
> {
> unsigned int ret;
> @@ -44,8 +46,10 @@ static unsigned int readit(const char *path)
>
> FILE *file;
> file = fopen(path, "r");
> - igt_assert_f(file,
> - "Couldn't open %s (%d)\n", path, errno);
> + if (file == NULL) {
> + fprintf(stderr, "Couldn't open %s (%d)\n", path, errno);
> + abort();
> + }
> scanned = fscanf(file, "%u", &ret);
> igt_assert(scanned == 1);
>
> @@ -54,62 +58,112 @@ static unsigned int readit(const char *path)
> return ret;
> }
>
> -igt_simple_main
> +static void read_rc6_residency( int value[], const char *name_of_rc6_residency[])
> {
> const int device = drm_get_card();
> - char *path, *pathp, *pathpp;
> - int fd, ret;
> - unsigned int value1, value1p, value1pp, value2, value2p, value2pp;
> + char *path ;
> + int ret;
> FILE *file;
> - int diff;
> -
> - igt_skip_on_simulation();
> -
> - /* Use drm_open_any to verify device existence */
> - fd = drm_open_any();
> - close(fd);
> -
> - ret = asprintf(&path, "/sys/class/drm/card%d/power/rc6_enable", device);
> - igt_assert(ret != -1);
>
> /* For some reason my ivb isn't idle even after syncing up with the gpu.
> * Let's add a sleept just to make it happy. */
> sleep(5);
>
> - file = fopen(path, "r");
> + ret = asprintf(&path, "/sys/class/drm/card%d/power/rc6_enable", device);
> + igt_assert(ret != -1);
> +
> + file = fopen(path, "r");//open
> igt_require(file);
>
> /* claim success if no rc6 enabled. */
> if (readit(path) == 0)
> igt_success();
>
> - ret = asprintf(&path, "/sys/class/drm/card%d/power/rc6_residency_ms", device);
> - igt_assert(ret != -1);
> - ret = asprintf(&pathp, "/sys/class/drm/card%d/power/rc6p_residency_ms", device);
> - igt_assert(ret != -1);
> - ret = asprintf(&pathpp, "/sys/class/drm/card%d/power/rc6pp_residency_ms", device);
> - igt_assert(ret != -1);
> + for(unsigned int i = 0; i < 6; i++)
> + {
> + if(i == 3)
> + sleep(SLEEP_DURATION / 1000);
> + ret = asprintf(&path, "/sys/class/drm/card%d/power/%s_residency_ms",device,name_of_rc6_residency[i % 3] );
> + igt_assert(ret != -1);
> + value[i] = readit(path);
> + }
> + free(path);
> +}
>
> - value1 = readit(path);
> - value1p = readit(pathp);
> - value1pp = readit(pathpp);
> - sleep(SLEEP_DURATION / 1000);
> - value2 = readit(path);
> - value2p = readit(pathp);
> - value2pp = readit(pathpp);
> +static void rc6_residency_counter(int value[],const char * name_of_rc6_residency[])
> +{
> + unsigned int flag_counter,flag_support;
> + double counter_result = 0;
> + flag_counter = 0;
> + flag_support = 0;
> +
> + for(int flag = NUMBER_OF_RC6_RESIDENCY-1; flag >= 0 ; flag --)
> + {
> + unsigned int tmp_counter, tmp_support;
> + double counter;
> + counter = ((double)value[flag + 3] - (double)value[flag]) /(double) SLEEP_DURATION;
> +
> + if( counter > 0.9 ){
> + counter_result = counter;
> + tmp_counter = 1;
> + }
> + else
> + tmp_counter = 0;
> +
> + if( value [flag + 3] == 0){
> + tmp_support = 0;
> + printf("This machine doesn't support %s\n",name_of_rc6_residency[flag]);
> + }
> + else
> + tmp_support = 1;
> +
> + flag_counter = flag_counter + tmp_counter;
> + flag_counter = flag_counter << 1;
> +
> + flag_support = flag_support + tmp_support;
> + flag_support = flag_support << 1;
> + }
> +
> + printf("The residency counter : %f \n", counter_result);
> +
> + igt_assert_f(flag_counter != 0 , "The RC6 residency counter is not good.\n");
> + igt_assert_f(flag_support != 0 , "This machine doesn't support any RC6 state!\n");
> + igt_assert_f(counter_result <=1 , "Debug files must be wrong \n");
> +
> + printf("This machine entry %s state.\n", name_of_rc6_residency[(flag_counter / 2) - 1]);
> +}
>
> - free(pathpp);
> - free(pathp);
> - free(path);
> +static void rc6_residency_check(int value[])
> +{
> + unsigned int diff;
> + diff = (value[3] - value[0]) +
> + (value[4] - value[1]) +
> + (value[5] - value[2]);
> +
> + igt_assert_f(diff <= (SLEEP_DURATION + RC6_FUDGE),"Diff was too high. That is unpossible\n");
> + igt_assert_f(diff >= (SLEEP_DURATION - RC6_FUDGE),"GPU was not in RC6 long enough. Check that "
> + "the GPU is as idle as possible(ie. no X, "
> + "running and running no other tests)\n");
> +}
> +
> +igt_main
> +{
> + int value[6];
> + int fd;
> + const char * name_of_rc6_residency[3]={"rc6","rc6p","rc6pp"};
> +
> + igt_skip_on_simulation();
> +
> + /* Use drm_open_any to verify device existence */
> + fd = drm_open_any();
> + close(fd);
> +
> + read_rc6_residency(value, name_of_rc6_residency);
> +
> + igt_subtest("rc6-residency-check")
> + rc6_residency_check(value);
>
> - diff = (value2pp - value1pp) +
> - (value2p - value1p) +
> - (value2 - value1);
> + igt_subtest("rc6-residency-counter")
> + rc6_residency_counter(value, name_of_rc6_residency);
>
> - igt_assert_f(diff <= (SLEEP_DURATION + RC6_FUDGE),
> - "Diff was too high. That is unpossible\n");
> - igt_assert_f(diff >= (SLEEP_DURATION - RC6_FUDGE),
> - "GPU was not in RC6 long enough. Check that "
> - "the GPU is as idle as possible (ie. no X, "
> - "running and running no other tests)\n");
> }
> --
> 1.8.3.1
>
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--
Daniel Vetter
Software Engineer, Intel Corporation
+41 (0) 79 365 57 48 - http://blog.ffwll.ch
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