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igt/test/pm_rps: load GPU to force not-idle to idle transition.

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When changing the sysfs GT min frequency, the kernel won't
automatcilly drop the GT frequency to idle unless the GPU
transitions from busy to idle.

Load the GPU after increasing the GT min frequency to force
a busy to idle transition. This matches the behavior when
decreasing the GT min frequency.

Signed-off-by: Bob Paauwe <bob.j.paauwe@intel.com>
Reviewed-by: Imre Deak <imre.deak@intel.com>
This commit is contained in:
Bob Paauwe 2015-12-07 13:53:35 -08:00 committed by Imre Deak
parent 4aa1b99a12
commit 4cc40ad4fe
1 changed files with 4 additions and 0 deletions
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4
tests/pm_rps.c
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@ -388,10 +388,14 @@ static void min_max_config(void (*check)(void), bool load_gpu)
igt_debug("\nIncrease min to midpoint...\n");
writeval(stuff[MIN].filp, fmid);
if (load_gpu)
do_load_gpu();
check();
igt_debug("\nIncrease min to RP0...\n");
writeval(stuff[MIN].filp, origfreqs[RP0]);
if (load_gpu)
do_load_gpu();
check();
igt_debug("\nIncrease min above RP0 (invalid)...\n");