diff options
Diffstat (limited to 'tools/perf/Documentation/perf-report.txt')
| -rw-r--r-- | tools/perf/Documentation/perf-report.txt | 38 |
1 files changed, 35 insertions, 3 deletions
diff --git a/tools/perf/Documentation/perf-report.txt b/tools/perf/Documentation/perf-report.txt index f4d91bebd59..848a0dcb6df 100644 --- a/tools/perf/Documentation/perf-report.txt +++ b/tools/perf/Documentation/perf-report.txt @@ -57,11 +57,44 @@ OPTIONS -s:: --sort=:: - Sort by key(s): pid, comm, dso, symbol, parent, srcline. + Sort histogram entries by given key(s) - multiple keys can be specified + in CSV format. Following sort keys are available: + pid, comm, dso, symbol, parent, cpu, srcline. + + Each key has following meaning: + + - comm: command (name) of the task which can be read via /proc/<pid>/comm + - pid: command and tid of the task + - dso: name of library or module executed at the time of sample + - symbol: name of function executed at the time of sample + - parent: name of function matched to the parent regex filter. Unmatched + entries are displayed as "[other]". + - cpu: cpu number the task ran at the time of sample + - srcline: filename and line number executed at the time of sample. The + DWARF debuggin info must be provided. + + By default, comm, dso and symbol keys are used. + (i.e. --sort comm,dso,symbol) + + If --branch-stack option is used, following sort keys are also + available: + dso_from, dso_to, symbol_from, symbol_to, mispredict. + + - dso_from: name of library or module branched from + - dso_to: name of library or module branched to + - symbol_from: name of function branched from + - symbol_to: name of function branched to + - mispredict: "N" for predicted branch, "Y" for mispredicted branch + + And default sort keys are changed to comm, dso_from, symbol_from, dso_to + and symbol_to, see '--branch-stack'. -p:: --parent=<regex>:: - regex filter to identify parent, see: '--sort parent' + A regex filter to identify parent. The parent is a caller of this + function and searched through the callchain, thus it requires callchain + information recorded. The pattern is in the exteneded regex format and + defaults to "\^sys_|^do_page_fault", see '--sort parent'. -x:: --exclude-other:: @@ -74,7 +107,6 @@ OPTIONS -t:: --field-separator=:: - Use a special separator character and don't pad with spaces, replacing all occurrences of this separator in symbol names (and other output) with a '.' character, that thus it's the only non valid separator. |