If we detect that the RPS end points do not scale perfectly, take the time to measure all the in between values as well. We are aborting the test, so we might as well spend the available time gathering critical debug information instead.
Signed-off-by: Chris Wilson <[email protected]> Cc: Mika Kuoppala <[email protected]> --- drivers/gpu/drm/i915/gt/selftest_rps.c | 36 ++++++++++++++++++++++++++ 1 file changed, 36 insertions(+) diff --git a/drivers/gpu/drm/i915/gt/selftest_rps.c b/drivers/gpu/drm/i915/gt/selftest_rps.c index e0a791eac752..f8c416ab8539 100644 --- a/drivers/gpu/drm/i915/gt/selftest_rps.c +++ b/drivers/gpu/drm/i915/gt/selftest_rps.c @@ -484,11 +484,29 @@ int live_rps_frequency_cs(void *arg) if (!scaled_within(max.freq * min.count, min.freq * max.count, 2, 3)) { + int f; + pr_err("%s: CS did not scale with frequency! scaled min:%llu, max:%llu\n", engine->name, max.freq * min.count, min.freq * max.count); show_pcu_config(rps); + + for (f = min.freq + 1; f <= rps->max_freq; f++) { + int act = f; + u64 count; + + count = measure_cs_frequency_at(rps, engine, &act); + if (act < f) + break; + + pr_info("%s: %x:%uMHz: %lluKHz [%d%%]\n", + engine->name, + act, intel_gpu_freq(rps, act), count, + (int)DIV64_U64_ROUND_CLOSEST(100 * min.freq * count, + act * min.count)); + } + err = -EINVAL; } @@ -593,11 +611,29 @@ int live_rps_frequency_srm(void *arg) if (!scaled_within(max.freq * min.count, min.freq * max.count, 1, 2)) { + int f; + pr_err("%s: CS did not scale with frequency! scaled min:%llu, max:%llu\n", engine->name, max.freq * min.count, min.freq * max.count); show_pcu_config(rps); + + for (f = min.freq + 1; f <= rps->max_freq; f++) { + int act = f; + u64 count; + + count = measure_frequency_at(rps, cntr, &act); + if (act < f) + break; + + pr_info("%s: %x:%uMHz: %lluKHz [%d%%]\n", + engine->name, + act, intel_gpu_freq(rps, act), count, + (int)DIV64_U64_ROUND_CLOSEST(100 * min.freq * count, + act * min.count)); + } + err = -EINVAL; } -- 2.20.1 _______________________________________________ Intel-gfx mailing list [email protected] https://lists.freedesktop.org/mailman/listinfo/intel-gfx
