diff options
Diffstat (limited to 'tools/perf/util/record.c')
| -rw-r--r-- | tools/perf/util/record.c | 34 |
1 files changed, 26 insertions, 8 deletions
diff --git a/tools/perf/util/record.c b/tools/perf/util/record.c index a4cc11592f6b..ea9aa1d7cf50 100644 --- a/tools/perf/util/record.c +++ b/tools/perf/util/record.c @@ -2,6 +2,7 @@ #include "debug.h" #include "evlist.h" #include "evsel.h" +#include "evsel_config.h" #include "parse-events.h" #include <errno.h> #include <limits.h> @@ -33,11 +34,24 @@ static struct evsel *evsel__read_sampler(struct evsel *evsel, struct evlist *evl return leader; } +static u64 evsel__config_term_mask(struct evsel *evsel) +{ + struct evsel_config_term *term; + struct list_head *config_terms = &evsel->config_terms; + u64 term_types = 0; + + list_for_each_entry(term, config_terms, list) { + term_types |= 1 << term->type; + } + return term_types; +} + static void evsel__config_leader_sampling(struct evsel *evsel, struct evlist *evlist) { struct perf_event_attr *attr = &evsel->core.attr; struct evsel *leader = evsel->leader; struct evsel *read_sampler; + u64 term_types, freq_mask; if (!leader->sample_read) return; @@ -47,16 +61,20 @@ static void evsel__config_leader_sampling(struct evsel *evsel, struct evlist *ev if (evsel == read_sampler) return; + term_types = evsel__config_term_mask(evsel); /* - * Disable sampling for all group members other than the leader in - * case the leader 'leads' the sampling, except when the leader is an - * AUX area event, in which case the 2nd event in the group is the one - * that 'leads' the sampling. + * Disable sampling for all group members except those with explicit + * config terms or the leader. In the case of an AUX area event, the 2nd + * event in the group is the one that 'leads' the sampling. */ - attr->freq = 0; - attr->sample_freq = 0; - attr->sample_period = 0; - attr->write_backward = 0; + freq_mask = (1 << EVSEL__CONFIG_TERM_FREQ) | (1 << EVSEL__CONFIG_TERM_PERIOD); + if ((term_types & freq_mask) == 0) { + attr->freq = 0; + attr->sample_freq = 0; + attr->sample_period = 0; + } + if ((term_types & (1 << EVSEL__CONFIG_TERM_OVERWRITE)) == 0) + attr->write_backward = 0; /* * We don't get a sample for slave events, we make them when delivering |