diff options
| -rw-r--r-- | tests/pm_rps.c | 34 |
1 files changed, 34 insertions, 0 deletions
diff --git a/tests/pm_rps.c b/tests/pm_rps.c index 101f65d8..4429b2c5 100644 --- a/tests/pm_rps.c +++ b/tests/pm_rps.c @@ -34,6 +34,7 @@ #include <fcntl.h> #include <signal.h> #include <errno.h> +#include <time.h> #include <sys/wait.h> #include "drmtest.h" @@ -87,6 +88,38 @@ static void read_freqs(int *freqs) freqs[i] = readval(stuff[i].filp); } +static void nsleep(unsigned long ns) +{ + struct timespec ts; + int ret; + + ts.tv_sec = 0; + ts.tv_nsec = ns; + do { + struct timespec rem; + + ret = nanosleep(&ts, &rem); + igt_assert(ret == 0 || errno == EINTR); + ts = rem; + } while (ret && errno == EINTR); +} + +static void wait_freq_settle(void) +{ + int timeout = 10; + + while (1) { + int freqs[NUMFREQ]; + + read_freqs(freqs); + if (freqs[CUR] >= freqs[MIN] && freqs[CUR] <= freqs[MAX]) + break; + nsleep(1000000); + if (!timeout--) + break; + } +} + static int do_writeval(FILE *filp, int val, int lerrno) { int ret, orig; @@ -102,6 +135,7 @@ static int do_writeval(FILE *filp, int val, int lerrno) } else { /* Expecting no error */ igt_assert_neq(ret, 0); + wait_freq_settle(); igt_assert(readval(filp) == val); } |