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pm_rps: New subtest min-max-config-idle

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Like subtest basic-api, but additionally requires that current
frequency is settling to the configured minimum within reasonable
time since we are idle.

Signed-off-by: Jeff McGee <jeff.mcgee@intel.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
This commit is contained in:
Jeff McGee 2014-01-28 18:25:03 -06:00 committed by Daniel Vetter
parent 2423b6c04e
commit 3bada1626c
1 changed files with 30 additions and 1 deletions
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31
tests/pm_rps.c
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@ -204,9 +204,12 @@ static void min_max_config(void (*check)(void))
log("\nIncrease max above RP0 (invalid)...\n");
writeval_inval(stuff[MAX].filp, origfreqs[RP0] + 1000);
check();
writeval(stuff[MIN].filp, origfreqs[MIN]);
writeval(stuff[MAX].filp, origfreqs[MAX]);
}
static void idle_check(void)
static void basic_check(void)
{
int freqs[NUMFREQ];
@ -215,6 +218,29 @@ static void idle_check(void)
checkit(freqs);
}
#define IDLE_WAIT_TIMESTEP_MSEC 100
#define IDLE_WAIT_TIMEOUT_MSEC 3000
static void idle_check(void)
{
int freqs[NUMFREQ];
int wait = 0;
/* Monitor frequencies until cur settles down to min, which should
* happen within the allotted time */
do {
read_freqs(freqs);
dump(freqs);
checkit(freqs);
if (freqs[CUR] == freqs[MIN])
break;
usleep(1000 * IDLE_WAIT_TIMESTEP_MSEC);
wait += IDLE_WAIT_TIMESTEP_MSEC;
} while (wait < IDLE_WAIT_TIMEOUT_MSEC);
igt_assert(freqs[CUR] == freqs[MIN]);
log("Required %d msec to reach cur=min\n", wait);
}
static void pm_rps_exit_handler(int sig)
{
if (origfreqs[MIN] > readval(stuff[MAX].filp)) {
@ -291,6 +317,9 @@ int main(int argc, char **argv)
}
igt_subtest("basic-api")
min_max_config(basic_check);
igt_subtest("min-max-config-idle")
min_max_config(idle_check);
igt_exit();