For this test, we need a laptop running on battery power so that we can read the battery charge level before and after suspend. And then wait long enough for a reliable measure. References: https://bugs.freedesktop.org/show_bug.cgi?id=111909 Signed-off-by: Chris Wilson <chris@xxxxxxxxxxxxxxxxxx> Cc: Mika Kuoppala <mika.kuoppala@xxxxxxxxxxxxxxx> --- tests/i915/gem_exec_suspend.c | 67 ++++++++++++++++++++++++++++++++++- 1 file changed, 66 insertions(+), 1 deletion(-) diff --git a/tests/i915/gem_exec_suspend.c b/tests/i915/gem_exec_suspend.c index af6190ddd..ee0d0719f 100644 --- a/tests/i915/gem_exec_suspend.c +++ b/tests/i915/gem_exec_suspend.c @@ -27,9 +27,13 @@ * Exercise executing batches across suspend before checking the results. */ +#include <fcntl.h> +#include <unistd.h> + #include "igt.h" -#include "igt_gt.h" #include "igt_dummyload.h" +#include "igt_gt.h" +#include "igt_sysfs.h" #define NOSLEEP 0 #define IDLE 1 @@ -232,6 +236,62 @@ static void run_test(int fd, unsigned engine, unsigned flags) test_all(fd, flags); } +struct battery_sample { + struct timespec tv; + uint64_t charge; +}; + +static bool get_power(int dir, struct battery_sample *s) +{ + return (clock_gettime(CLOCK_REALTIME, &s->tv) == 0 && + igt_sysfs_scanf(dir, "charge_now", "%"PRIu64, &s->charge) == 1); +} + +static double d_charge(const struct battery_sample *after, + const struct battery_sample *before) +{ + return (before->charge - after->charge) * 1e-3; /* mWh */ +} + +static double d_time(const struct battery_sample *after, + const struct battery_sample *before) +{ + return ((after->tv.tv_sec - before->tv.tv_sec) + + (after->tv.tv_nsec - before->tv.tv_nsec) * 1e-9); +} + +static void power_test(int i915, unsigned engine, unsigned flags) +{ + struct battery_sample before, after; + char *status; + int dir; + + dir = open("/sys/class/power_supply/BAT0", O_RDONLY); + igt_require_f(dir != -1, "/sys/class/power_supply/BAT0 not available\n"); + + igt_require_f(get_power(dir, &before), + "power test needs reported energy level\n"); + free(status); + + status = igt_sysfs_get(dir, "status"); + igt_require_f(status && strcmp(status, "Discharging") == 0, + "power test needs to be on battery, not mains, power\n"); + free(status); + + igt_set_autoresume_delay(30 * 60); /* 30 minutes */ + + igt_assert(get_power(dir, &before)); + run_test(i915, engine, flags); + igt_assert(get_power(dir, &after)); + + igt_set_autoresume_delay(0); + + igt_info("Power consumed while suspended: %.3fmWh\n", + d_charge(&after, &before)); + igt_info("Discharge rate while suspended: %.3fmW\n", + d_charge(&after, &before) * 3600 / d_time(&after, &before)); +} + igt_main { const struct { @@ -289,6 +349,11 @@ igt_main igt_subtest("hang-S4") run_test(fd, 0, HIBERNATE | HANG); + igt_subtest("power-S0") + power_test(fd, 0, IDLE); + igt_subtest("power-S3") + power_test(fd, 0, SUSPEND); + igt_fixture { igt_disallow_hang(fd, hang); close(fd); -- 2.24.0.rc1 _______________________________________________ Intel-gfx mailing list Intel-gfx@xxxxxxxxxxxxxxxxxxxxx https://lists.freedesktop.org/mailman/listinfo/intel-gfx
