kernel/tools/testing/selftests/resctrl/mbm_test.c, branch linux-5.11.yHosts the 0x221E linux distro kernel.https://universe.0xinfinity.dev/distro/kernel/atom?h=linux-5.11.y2021-05-12T06:37:24Zselftests/resctrl: Clean up resctrl features check2021-05-12T06:37:24ZFenghua Yufenghua.yu@intel.com2021-03-17T02:22:38Zurn:sha1:bb3493025b8f8d9c299fbf6a51518940396292b0
[ Upstream commit 2428673638ea28fa93d2a38b1c3e8d70122b00ee ]
Checking resctrl features call strcmp() to compare feature strings
(e.g. "mba", "cat" etc). The checkings are error prone and don't have
good coding style. Define the constant strings in macros and call
strncmp() to solve the potential issues.
Suggested-by: Shuah Khan <skhan@linuxfoundation.org>
Tested-by: Babu Moger <babu.moger@amd.com>
Signed-off-by: Fenghua Yu <fenghua.yu@intel.com>
Signed-off-by: Shuah Khan <skhan@linuxfoundation.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
selftests/resctrl: Add MBM test2020-02-11T01:42:29ZFenghua Yufenghua.yu@intel.com2020-01-16T21:32:39Zurn:sha1:ecdbb911f22d6cc5d422571dedf048b889d71417
MBM (Memory Bandwidth Monitoring) test is the first implemented selftest.
It starts a stressful memory bandwidth benchmark and assigns the
bandwidth pid in a resctrl monitoring group. Read and compare perf IMC
counter and MBM total bytes for the benchmark. The numbers should be
close enough to pass the test.
Default benchmark is built-in fill_buf. But users can specify their
own benchmark by option "-b".
We can add memory bandwidth monitoring for multiple processes in the
future.
Co-developed-by: Sai Praneeth Prakhya <sai.praneeth.prakhya@intel.com>
Signed-off-by: Sai Praneeth Prakhya <sai.praneeth.prakhya@intel.com>
Co-developed-by: Babu Moger <babu.moger@amd.com>
Signed-off-by: Babu Moger <babu.moger@amd.com>
Signed-off-by: Fenghua Yu <fenghua.yu@intel.com>
Signed-off-by: Shuah Khan <skhan@linuxfoundation.org>