On 08/31, Lionel Landwerlin wrote: > Some of our tests measure that the OA unit produces reports at > expected time intervals (as configured through the PERF_OPEN > ioctl). It turns out the power management plays a role in the decision > of the OA unit to write reports to memory. Under normal circumstances > we don't really mind if the unit misses one report here or there, but > for our tests it makes pretty difficult to verify whether we've made a > mistake in the configuration. > > To work around this, let's prevent power management to kick in by > holding /dev/cpu_dma_latency opened for the following tests : > > - blocking > - polling > - buffer-fill > - oa-exponents + - enable-disable > > Many thanks to Chris Wilson for suggesting this! > > Signed-off-by: Lionel Landwerlin <lionel.g.landwerlin@xxxxxxxxx> Seems to cure the oa-exponents test for me, so: Reviewed-by: Matthew Auld <matthew.auld@xxxxxxxxx> _______________________________________________ Intel-gfx mailing list Intel-gfx@xxxxxxxxxxxxxxxxxxxxx https://lists.freedesktop.org/mailman/listinfo/intel-gfx
