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authorAlexander Antonov <alexander.antonov@linux.intel.com>2021-04-19 12:41:46 +0300
committerArnaldo Carvalho de Melo <acme@redhat.com>2021-04-20 08:40:20 -0300
commitf9ed693e8bc0e7de9eb766a3c7178590e8bb6cd5 (patch)
tree492dd71987ce6a737929aaa04457d40808470c6d /tools/perf/command-list.txt
parent19776d3cede733dc9be79d880339acb9b2f456d6 (diff)
downloadlinux-f9ed693e8bc0e7de9eb766a3c7178590e8bb6cd5.tar.gz
linux-f9ed693e8bc0e7de9eb766a3c7178590e8bb6cd5.tar.xz
perf stat: Enable iostat mode for x86 platforms
This functionality is based on recently introduced sysfs attributes for Intel® Xeon® Scalable processor family (code name Skylake-SP): Commit bb42b3d39781d7fc ("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>
Diffstat (limited to 'tools/perf/command-list.txt')
-rw-r--r--tools/perf/command-list.txt1
1 files changed, 1 insertions, 0 deletions
diff --git a/tools/perf/command-list.txt b/tools/perf/command-list.txt
index 825a12e8d694..4aa034aefa33 100644
--- a/tools/perf/command-list.txt
+++ b/tools/perf/command-list.txt
@@ -14,6 +14,7 @@ perf-config mainporcelain common
perf-evlist mainporcelain common
perf-ftrace mainporcelain common
perf-inject mainporcelain common
+perf-iostat mainporcelain common
perf-kallsyms mainporcelain common
perf-kmem mainporcelain common
perf-kvm mainporcelain common