diff options
| -rw-r--r-- | tools/perf/Documentation/perf-record.txt | 5 | ||||
| -rw-r--r-- | tools/perf/builtin-record.c | 15 |
2 files changed, 20 insertions, 0 deletions
diff --git a/tools/perf/Documentation/perf-record.txt b/tools/perf/Documentation/perf-record.txt index d6532ed97c025..41e36b4dc765f 100644 --- a/tools/perf/Documentation/perf-record.txt +++ b/tools/perf/Documentation/perf-record.txt @@ -828,6 +828,11 @@ filtered through the mask provided by -C option. only, as of now. So the applications built without the frame pointer might see bogus addresses. +--setup-filter=<action>:: + Prepare BPF filter to be used by regular users. The action should be + either "pin" or "unpin". The filter can be used after it's pinned. + + include::intel-hybrid.txt[] SEE ALSO diff --git a/tools/perf/builtin-record.c b/tools/perf/builtin-record.c index 01fb95487a63c..72345d1e54b09 100644 --- a/tools/perf/builtin-record.c +++ b/tools/perf/builtin-record.c @@ -171,6 +171,7 @@ struct record { bool timestamp_filename; bool timestamp_boundary; bool off_cpu; + const char *filter_action; struct switch_output switch_output; unsigned long long samples; unsigned long output_max_size; /* = 0: unlimited */ @@ -3557,6 +3558,8 @@ static struct option __record_options[] = { "write collected trace data into several data files using parallel threads", record__parse_threads), OPT_BOOLEAN(0, "off-cpu", &record.off_cpu, "Enable off-cpu analysis"), + OPT_STRING(0, "setup-filter", &record.filter_action, "pin|unpin", + "BPF filter action"), OPT_END() }; @@ -4086,6 +4089,18 @@ int cmd_record(int argc, const char **argv) pr_warning("WARNING: --timestamp-filename option is not available in parallel streaming mode.\n"); } + if (rec->filter_action) { + if (!strcmp(rec->filter_action, "pin")) + err = perf_bpf_filter__pin(); + else if (!strcmp(rec->filter_action, "unpin")) + err = perf_bpf_filter__unpin(); + else { + pr_warning("Unknown BPF filter action: %s\n", rec->filter_action); + err = -EINVAL; + } + goto out_opts; + } + /* * Allow aliases to facilitate the lookup of symbols for address * filters. Refer to auxtrace_parse_filters(). |