Hi Neil, On Fri, Aug 04, 2017 at 03:59:12PM -0400, Neil Leeder wrote: > This adds a driver for the SMMUv3 PMU into the perf framework. > It includes an IORT update to support PM Counter Groups. > > IORT has no mechanism for determining device names so PMUs > are named based on their physical address. > > Tested on Qualcomm QDF2400. perf_fuzzer ran for 4+ hours > with no failures. > > Neil Leeder (2): > acpi: arm64: add iort support for PMCG > perf: add arm64 smmuv3 pmu driver > > drivers/acpi/arm64/iort.c | 54 +++ > drivers/perf/Kconfig | 9 + > drivers/perf/Makefile | 1 + > drivers/perf/arm_smmuv3_pmu.c | 823 > ++++++++++++++++++++++++++++++++++++++++++ > include/acpi/actbl2.h | 9 +- > 5 files changed, 895 insertions(+), 1 deletion(-) > create mode 100644 drivers/perf/arm_smmuv3_pmu.c
I try to run your driver on ThunderX2, but perf list doesn't show new
events, and example in description in patch 2 also doesn't work:
yury@VAL1-25:~/linux$ tools/perf/perf stat -e
smmu_0_ff88840/transaction,filter_enable=1,
filter_span=1,filter_stream_id=0x42/ -a pwd
event syntax error: '..ter_enable=1,'
\___ parser error
Run 'perf list' for a list of valid events
Usage: perf stat [<options>] [<command>]
-e, --event <event> event selector. use 'perf list' to list available
events
I run v4.14-rc7 kernel plus this series. The config is attached. I
found that platform_match() never return 1 for arm-smmu-pmu and so
the driver never probed.
Maybe it's my local configuration issue?
Thanks for any help,
Yury
t99.config.gz
Description: application/gzip
