On 25/03/2021 20:39, Paul A. Clarke wrote:
On Thu, Mar 25, 2021 at 06:33:12PM +0800, John Garry wrote:
Metric reuse support is added for pmu-events parse metric testcase.
This had been broken on power9 recentlty:
https://lore.kernel.org/lkml/20210324015418.gc8...@li-24c3614c-2adc-11b2-a85c-85f334518bdb.ibm.com/
Much better. Before:
--
$ perf test -v 10 2>&1 | grep -i error | wc -l
112
--
After:
--
$ perf test -v 10 2>&1 | grep -i error | wc -l
17
--
And these seem like different types of issues:
--
$ perf test -v 10 2>&1 | grep -i error
Error string 'Cannot find PMU `nest_mcs01_imc'. Missing kernel support?' help
'(null)'
Error string 'Cannot find PMU `nest_mcs01_imc'. Missing kernel support?' help
'(null)'
Error string 'Cannot find PMU `nest_mcs23_imc'. Missing kernel support?' help
'(null)'
Error string 'Cannot find PMU `nest_mcs23_imc'. Missing kernel support?' help
'(null)'
Error string 'Cannot find PMU `nest_mcs01_imc'. Missing kernel support?' help
'(null)'
Error string 'Cannot find PMU `nest_mcs01_imc'. Missing kernel support?' help
'(null)'
Error string 'Cannot find PMU `nest_mcs23_imc'. Missing kernel support?' help
'(null)'
Error string 'Cannot find PMU `nest_mcs23_imc'. Missing kernel support?' help
'(null)'
Error string 'Cannot find PMU `nest_powerbus0_imc'. Missing kernel support?'
help '(null)'
Error string 'Cannot find PMU `nest_mcs23_imc'. Missing kernel support?' help
'(null)'
Error string 'Cannot find PMU `nest_mcs01_imc'. Missing kernel support?' help
'(null)'
Error string 'Cannot find PMU `nest_mcs01_imc'. Missing kernel support?' help
'(null)'
Error string 'Cannot find PMU `nest_mcs01_imc'. Missing kernel support?' help
'(null)'
Error string 'Cannot find PMU `nest_mcs01_imc'. Missing kernel support?' help
'(null)'
Error string 'Cannot find PMU `nest_mcs23_imc'. Missing kernel support?' help
'(null)'
Error string 'Cannot find PMU `nest_mcs23_imc'. Missing kernel support?' help
'(null)'
Error string 'Cannot find PMU `nest_mcs23_imc'. Missing kernel support?' help
'(null)'
--
This looks suspicious.
Firstly, does /sys/bus/event_source/devices/nest_mcs01_imc (or others,
above) exist on your system? I guess not.
Secondly, checking Documentation/powerpc/imc.rst, we have examples of:
nest_mcs01/PM_MCS01_64B_R...
So is the PMU name correct in the metric file for nest_mcs01_imc?
Looking at the kernel driver file, arch/powerpc/perf/imc-pmu.c, it seems
to be correct. Not sure.
Thanks,
John
(Added Kajol Jain to CC)
