diff options
Diffstat (limited to 'tools/perf/Documentation/perf-stat.txt')
| -rw-r--r-- | tools/perf/Documentation/perf-stat.txt | 12 |
1 files changed, 11 insertions, 1 deletions
diff --git a/tools/perf/Documentation/perf-stat.txt b/tools/perf/Documentation/perf-stat.txt index c06c341e72b9..d8a33f4a47c5 100644 --- a/tools/perf/Documentation/perf-stat.txt +++ b/tools/perf/Documentation/perf-stat.txt @@ -39,7 +39,7 @@ report:: - a raw PMU event in the form of rN where N is a hexadecimal value that represents the raw register encoding with the layout of the event control registers as described by entries in - /sys/bus/event_sources/devices/cpu/format/*. + /sys/bus/event_source/devices/cpu/format/*. - a symbolic or raw PMU event followed by an optional colon and a list of event modifiers, e.g., cpu-cycles:p. See the @@ -454,6 +454,16 @@ Multiple events are created from a single event specification when: 2. Aliases, which are listed immediately after the Kernel PMU events by perf list, are used. +--hybrid-merge:: +Merge the hybrid event counts from all PMUs. + +For hybrid events, by default, the stat aggregates and reports the event +counts per PMU. But sometimes, it's also useful to aggregate event counts +from all PMUs. This option enables that behavior and reports the counts +without PMUs. + +For non-hybrid events, it should be no effect. + --smi-cost:: Measure SMI cost if msr/aperf/ and msr/smi/ events are supported. |