f9ed693e8b
This functionality is based on recently introduced sysfs attributes for
Intel® Xeon® Scalable processor family (code name Skylake-SP):
Commit bb42b3d397 ("perf/x86/intel/uncore: Expose an Uncore unit to IIO PMON mapping")
Mode is intended to provide four I/O performance metrics in MB per each
PCIe root port:
- Inbound Read: I/O devices below root port read from the host memory
- Inbound Write: I/O devices below root port write to the host memory
- Outbound Read: CPU reads from I/O devices below root port
- Outbound Write: CPU writes to I/O devices below root port
Each metric requiries only one uncore event which increments at every 4B
transfer in corresponding direction. The formulas to compute metrics
are generic:
#EventCount * 4B / (1024 * 1024)
Acked-by: Namhyung Kim <namhyung@kernel.org>
Signed-off-by: Alexander Antonov <alexander.antonov@linux.intel.com>
Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com>
Cc: Alexey V Bayduraev <alexey.v.bayduraev@linux.intel.com>
Cc: Andi Kleen <ak@linux.intel.com>
Cc: Arnaldo Carvalho de Melo <acme@kernel.org>
Cc: Ian Rogers <irogers@google.com>
Cc: Ingo Molnar <mingo@redhat.com>
Cc: Jiri Olsa <jolsa@redhat.com>
Cc: Mark Rutland <mark.rutland@arm.com>
Cc: Peter Zijlstra <peterz@infradead.org>
Link: https://lore.kernel.org/r/20210419094147.15909-4-alexander.antonov@linux.intel.com
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
23 lines
576 B
Text
23 lines
576 B
Text
perf-y += header.o
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perf-y += tsc.o
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perf-y += pmu.o
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perf-y += kvm-stat.o
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perf-y += perf_regs.o
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perf-y += topdown.o
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perf-y += machine.o
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perf-y += event.o
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perf-y += evlist.o
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perf-y += mem-events.o
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perf-y += evsel.o
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perf-y += iostat.o
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perf-$(CONFIG_DWARF) += dwarf-regs.o
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perf-$(CONFIG_BPF_PROLOGUE) += dwarf-regs.o
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perf-$(CONFIG_LOCAL_LIBUNWIND) += unwind-libunwind.o
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perf-$(CONFIG_LIBDW_DWARF_UNWIND) += unwind-libdw.o
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perf-$(CONFIG_AUXTRACE) += auxtrace.o
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perf-$(CONFIG_AUXTRACE) += archinsn.o
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perf-$(CONFIG_AUXTRACE) += intel-pt.o
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perf-$(CONFIG_AUXTRACE) += intel-bts.o
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