diff options
Diffstat (limited to 'tools/perf/Documentation')
| -rw-r--r-- | tools/perf/Documentation/perf-stat.txt | 14 |
1 files changed, 9 insertions, 5 deletions
diff --git a/tools/perf/Documentation/perf-stat.txt b/tools/perf/Documentation/perf-stat.txt index 628026dbedc5..f15b306be183 100644 --- a/tools/perf/Documentation/perf-stat.txt +++ b/tools/perf/Documentation/perf-stat.txt @@ -267,11 +267,15 @@ taskset. --no-merge:: Do not merge results from same PMUs. -When multiple events are created from a single event alias, stat will, -by default, aggregate the event counts and show the result in a single -row. This option disables that behavior and shows the individual events -and counts. Aliases are listed immediately after the Kernel PMU events -by perf list. +When multiple events are created from a single event specification, +stat will, by default, aggregate the event counts and show the result +in a single row. This option disables that behavior and shows +the individual events and counts. + +Multiple events are created from a single event specification when: +1. Prefix or glob matching is used for the PMU name. +2. Aliases, which are listed immediately after the Kernel PMU events + by perf list, are used. --smi-cost:: Measure SMI cost if msr/aperf/ and msr/smi/ events are supported. |