Em Thu, Jan 22, 2015 at 12:40:14PM +0000, Matt Fleming escreveu: > Folks, > > In the process of writing perf support for Intel's Cache QoS Monitoring > feature [0] I've had to write my own userland tests to drive tools/perf > and indirectly the kernel internals. I'm now getting requests for these > tests from various people and it occurs to me that they should probably > live in the kernel tree. > > The tests I've got do a couple of things like setting up a perf_event > cgroup and assigning enough tasks to trigger the RMID recycling code in > the CQM driver, ensuring that we can run multiple events simultaneously > (that the event scheduling/rotation code works), etc. > > Does anything like this already exist for hw events? I couldn't find > anything specific to hw events from snooping around in tools/perf/tests. > > I propose we add some hw event tests to the kernel tree. These will > provide, > > - regression tests > - a source of documentation for how to use the events
That is the description for tools/perf/tests/ please send your patches for adding new entries there. > We should only test those hw events that are present on a user's > machine; there's no sense in emulating things. At some point 'perf test' should grow infrastructure to specify what is required for a test so that it auto-skips those, possibly not even bothering the user telling something can't be tested. Right now for things like tests that requires finding a vmlinux, if it doesn't find it, it will just print "Skipped", etc. > Thoughts? > > [0] - > https://lkml.kernel.org/r/1415999712-5850-1-git-send-email-m...@console-pimps.org - Arnaldo -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
