In Snapshot Mode trace data is captured only when signal SIGUSR2 is received
and on exit if the above 'e' option is given.
+--aux-sample[=OPTIONS]::
+Select AUX area sampling. At least one of the events selected by the -e option
+must be an AUX area event. Samples on other events will be created containing
+data from the AUX area. Optionally sample size may be specified, otherwise it
+defaults to 4KiB.
+
--proc-map-timeout::
When processing pre-existing threads /proc/XXX/mmap, it may take a long time,
because the file may be huge. A time out is needed in such cases.
if (err)
return err;
+ err = auxtrace_parse_sample_options(rec->itr, rec->evlist, &rec->opts,
+ rec->opts.auxtrace_sample_opts);
+ if (err)
+ return err;
+
return auxtrace_parse_filters(rec->evlist);
}
struct evlist *evlist)
{
struct record_opts *opts = &rec->opts;
+ bool auxtrace_overwrite = opts->auxtrace_snapshot_mode ||
+ opts->auxtrace_sample_mode;
char msg[512];
if (opts->affinity != PERF_AFFINITY_SYS)
if (evlist__mmap_ex(evlist, opts->mmap_pages,
opts->auxtrace_mmap_pages,
- opts->auxtrace_snapshot_mode,
+ auxtrace_overwrite,
opts->nr_cblocks, opts->affinity,
opts->mmap_flush, opts->comp_level) < 0) {
if (errno == EPERM) {
}
if (map->auxtrace_mmap.base && !rec->opts.auxtrace_snapshot_mode &&
+ !rec->opts.auxtrace_sample_mode &&
record__auxtrace_mmap_read(rec, map) != 0) {
rc = -1;
goto out;
if (err)
goto out;
+ /* Synthesize id_index before auxtrace_info */
+ if (rec->opts.auxtrace_sample_mode) {
+ err = perf_event__synthesize_id_index(tool,
+ process_synthesized_event,
+ session->evlist, machine);
+ if (err)
+ goto out;
+ }
+
if (rec->opts.full_auxtrace) {
err = perf_event__synthesize_auxtrace_info(rec->itr, tool,
session, process_synthesized_event);
parse_clockid),
OPT_STRING_OPTARG('S', "snapshot", &record.opts.auxtrace_snapshot_opts,
"opts", "AUX area tracing Snapshot Mode", ""),
+ OPT_STRING_OPTARG(0, "aux-sample", &record.opts.auxtrace_sample_opts,
+ "opts", "sample AUX area", ""),
OPT_UINTEGER(0, "proc-map-timeout", &proc_map_timeout,
"per thread proc mmap processing timeout in ms"),
OPT_BOOLEAN(0, "namespaces", &record.opts.record_namespaces,