Hi Vinay, On 2024-01-11 at 14:20:54 -0800, Vinay Belgaumkar wrote: > Seeing random issues where this test skips due to invalid > boost freq at the start. Also ensure that we restore the frequencies at the > end. > > v2: Use save/restore functions instead of exit_handler. Adding an > exit_handler necessitated moving drm_close() into the handler. However, > the module-reload subtest at the end expects drm-fd to be closed. > Also setup expected frequencies (Kamil) and address other nits (Kamil) > > Link: https://gitlab.freedesktop.org/drm/intel/-/issues/9432 > Cc: Kamil Konieczny <[email protected]> > Signed-off-by: Vinay Belgaumkar <[email protected]>
Reviewed-by: Kamil Konieczny <[email protected]> > --- > tests/intel/perf_pmu.c | 62 +++++++++++++++++++++++++++++++++++++++++- > 1 file changed, 61 insertions(+), 1 deletion(-) > > diff --git a/tests/intel/perf_pmu.c b/tests/intel/perf_pmu.c > index c6e6a8b77..4ae2b60ae 100644 > --- a/tests/intel/perf_pmu.c > +++ b/tests/intel/perf_pmu.c > @@ -2454,12 +2454,69 @@ static void pmu_read(int i915) > for_each_if((e)->class == I915_ENGINE_CLASS_RENDER) \ > igt_dynamic_f("%s", e->name) > > +int fd = -1; > +uint32_t *stash_min, *stash_max, *stash_boost; > + > +static void save_sysfs_freq(int i915) > +{ > + int gt, num_gts, sysfs, tmp; > + uint32_t rpn_freq, rp0_freq; > + > + num_gts = igt_sysfs_get_num_gt(i915); > + > + stash_min = (uint32_t *)malloc(sizeof(uint32_t) * num_gts); > + stash_max = (uint32_t *)malloc(sizeof(uint32_t) * num_gts); > + stash_boost = (uint32_t *)malloc(sizeof(uint32_t) * num_gts); > + > + /* Save boost, min and max across GTs */ > + i915_for_each_gt(i915, tmp, gt) { > + sysfs = igt_sysfs_gt_open(i915, gt); > + igt_require(sysfs >= 0); > + > + stash_min[gt] = igt_sysfs_get_u32(sysfs, "rps_min_freq_mhz"); > + stash_max[gt] = igt_sysfs_get_u32(sysfs, "rps_max_freq_mhz"); > + stash_boost[gt] = igt_sysfs_get_u32(sysfs, > "rps_boost_freq_mhz"); > + igt_debug("GT: %d, min: %d, max: %d, boost:%d\n", > + gt, stash_min[gt], stash_max[gt], stash_boost[gt]); > + > + rpn_freq = igt_sysfs_get_u32(sysfs, "rps_RPn_freq_mhz"); > + rp0_freq = igt_sysfs_get_u32(sysfs, "rps_RP0_freq_mhz"); > + > + /* Set pre-conditions, in case frequencies are in non-default > state */ > + igt_require(__igt_sysfs_set_u32(sysfs, "rps_max_freq_mhz", > rp0_freq)); > + igt_require(__igt_sysfs_set_u32(sysfs, "rps_boost_freq_mhz", > rp0_freq)); > + igt_require(__igt_sysfs_set_u32(sysfs, "rps_min_freq_mhz", > rpn_freq)); > + > + close(sysfs); > + } > +} > + > +static void restore_sysfs_freq(int i915) > +{ > + int sysfs, gt, tmp; > + > + /* Restore frequencies */ > + i915_for_each_gt(fd, tmp, gt) { > + sysfs = igt_sysfs_gt_open(fd, gt); > + igt_require(sysfs >= 0); > + > + igt_require(__igt_sysfs_set_u32(sysfs, "rps_max_freq_mhz", > stash_max[gt])); > + igt_require(__igt_sysfs_set_u32(sysfs, "rps_min_freq_mhz", > stash_min[gt])); > + igt_require(__igt_sysfs_set_u32(sysfs, "rps_boost_freq_mhz", > stash_boost[gt])); > + > + close(sysfs); > + } > + free(stash_min); > + free(stash_max); > + free(stash_boost); > +} > + > igt_main > { > const struct intel_execution_engine2 *e; > unsigned int num_engines = 0; > const intel_ctx_t *ctx = NULL; > - int gt, tmp, fd = -1; > + int gt, tmp; > int num_gt = 0; > > /** > @@ -2664,12 +2721,15 @@ igt_main > * Test GPU frequency. > */ > igt_subtest_with_dynamic("frequency") { > + save_sysfs_freq(fd); > + > i915_for_each_gt(fd, tmp, gt) { > igt_dynamic_f("gt%u", gt) > test_frequency(fd, gt); > igt_dynamic_f("idle-gt%u", gt) > test_frequency_idle(fd, gt); > } > + restore_sysfs_freq(fd); > } > > /** > -- > 2.38.1 >
