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SubjectRE: [PATCH v2 0/8] selftests/resctrl: Add resctrl selftest
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Hi Fenghua, 

> -----Original Message-----
> From: linux-kernel-owner@vger.kernel.org <linux-kernel-
> owner@vger.kernel.org> On Behalf Of Fenghua Yu
> Sent: Thursday, October 25, 2018 6:07 PM
> To: Thomas Gleixner <tglx@linutronix.de>; Ingo Molnar
> <mingo@redhat.com>; H Peter Anvin <hpa@zytor.com>; Tony Luck
> <tony.luck@intel.com>; Peter Zijlstra <peterz@infradead.org>; Reinette
> Chatre <reinette.chatre@intel.com>; Moger, Babu
> <Babu.Moger@amd.com>; James Morse <james.morse@arm.com>; Ravi V
> Shankar <ravi.v.shankar@intel.com>; Sai Praneeth Prakhya
> <sai.praneeth.prakhya@intel.com>; Arshiya Hayatkhan Pathan
> <arshiya.hayatkhan.pathan@intel.com>
> Cc: linux-kernel <linux-kernel@vger.kernel.org>; Fenghua Yu
> <fenghua.yu@intel.com>
> Subject: [PATCH v2 0/8] selftests/resctrl: Add resctrl selftest
>
> With more and more resctrl features are being added by Intel, AMD
> and ARM, a test tool is becoming more and more useful to validate
> that both hardware and software functionalities work as expected.
>
> We introduce resctrl selftest to cover resctrl features on both
> X86 and ARM architectures. It first implements MBM (Memory Bandwidth
> Monitoring) and MBA (Memory Bandwidth Allocation) tests. We can
> enhance
> the selftest tool to include more functionality tests in future.
>
> There is an existing resctrl test suit 'intel_cmt_cat'. But the major
> purpose of the tool is to test Intel(R) RDT hardware via writing and
> reading MSR registers. It does access resctrl file system; but the
> functionalities are very limited. And it doesn't support automatic test
> and a lot of manual verifications are involved.
>
> So the selftest tool we are introducing here provides a convenient
> tool which does automatic resctrl testing, is easily available in kernel
> tree, and will be extended to AMD QoS and ARM MPAM.
>
> The selftest tool is in tools/testing/selftests/resctrl in order to have
> generic test code for all architectures.
>
> Changelog:
> v2:
> - Change code based on comments from Babu Moger
> - Clean up other places.
>
> Arshiya Hayatkhan Pathan (2):
> selftests/resctrl: Add mbm test
> selftests/resctrl: Add mba test

I suggest to use MBM and MBA(all caps) while talking about these features. Same applies in each individual patches.

>
> Fenghua Yu (2):
> selftests/resctrl: Add README for resctrl tests
> selftests/resctrl: Add the test in MAINTAINERS
>
> Sai Praneeth Prakhya (4):
> selftests/resctrl: Add basic resctrl file system operations and data
> selftests/resctrl: Read memory bandwidth from perf IMC counter and
> from resctrl file system
> selftests/resctrl: Add callback to start a benchmark
> selftests/resctrl: Add built in benchmark
>
> MAINTAINERS | 1 +
> tools/testing/selftests/resctrl/Makefile | 16 +
> tools/testing/selftests/resctrl/README | 53 ++
> tools/testing/selftests/resctrl/fill_buf.c | 175 ++++++
> tools/testing/selftests/resctrl/mba_test.c | 175 ++++++
> tools/testing/selftests/resctrl/mbm_test.c | 143 +++++
> tools/testing/selftests/resctrl/membw.c | 678
> ++++++++++++++++++++++++
> tools/testing/selftests/resctrl/resctrl.h | 88 +++
> tools/testing/selftests/resctrl/resctrl_tests.c | 138 +++++
> tools/testing/selftests/resctrl/resctrlfs.c | 465 ++++++++++++++++
> 10 files changed, 1932 insertions(+)
> create mode 100644 tools/testing/selftests/resctrl/Makefile
> create mode 100644 tools/testing/selftests/resctrl/README
> create mode 100644 tools/testing/selftests/resctrl/fill_buf.c
> create mode 100644 tools/testing/selftests/resctrl/mba_test.c
> create mode 100644 tools/testing/selftests/resctrl/mbm_test.c
> create mode 100644 tools/testing/selftests/resctrl/membw.c
> create mode 100644 tools/testing/selftests/resctrl/resctrl.h
> create mode 100644 tools/testing/selftests/resctrl/resctrl_tests.c
> create mode 100644 tools/testing/selftests/resctrl/resctrlfs.c
>
> --
> 2.5.0

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