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As the metric events keep pointers to evsel, it should be refreshed when events are cloned during the operation. The perf_stat__collect_metric_expr() is also called in case an event has a metric directly. During the copy, it references evsel by index as the evlist now has cloned evsels for the given cgroup. Cc: John Garry Cc: Kajol Jain Cc: Ian Rogers Signed-off-by: Namhyung Kim --- tools/perf/builtin-stat.c | 3 +- tools/perf/util/cgroup.c | 15 ++++++- tools/perf/util/cgroup.h | 4 +- tools/perf/util/evlist.c | 11 +++++ tools/perf/util/evlist.h | 1 + tools/perf/util/metricgroup.c | 77 +++++++++++++++++++++++++++++++++++ tools/perf/util/metricgroup.h | 6 +++ 7 files changed, 114 insertions(+), 3 deletions(-) diff --git a/tools/perf/builtin-stat.c b/tools/perf/builtin-stat.c index 6724d23ce2e7..55a7dc175cdf 100644 --- a/tools/perf/builtin-stat.c +++ b/tools/perf/builtin-stat.c @@ -2261,7 +2261,8 @@ int cmd_stat(int argc, const char **argv) goto out; if (multiply_cgroup && stat_config.cgroups) { - if (evlist__multiply_cgroup(evsel_list, stat_config.cgroups) < 0) + if (evlist__multiply_cgroup(evsel_list, stat_config.cgroups, + &stat_config.metric_events) < 0) goto out; } diff --git a/tools/perf/util/cgroup.c b/tools/perf/util/cgroup.c index 4892f9496bc2..1ba61b5d66b4 100644 --- a/tools/perf/util/cgroup.c +++ b/tools/perf/util/cgroup.c @@ -3,6 +3,9 @@ #include "evsel.h" #include "cgroup.h" #include "evlist.h" +#include "rblist.h" +#include "metricgroup.h" +#include "stat.h" #include #include #include @@ -198,10 +201,12 @@ int parse_cgroups(const struct option *opt, const char *str, return 0; } -int evlist__multiply_cgroup(struct evlist *evlist, const char *str) +int evlist__multiply_cgroup(struct evlist *evlist, const char *str, + struct rblist *metric_events) { struct evlist *orig_list, *tmp_list; struct evsel *pos, *evsel, *leader; + struct rblist orig_metric_events; struct cgroup *cgrp = NULL; const char *p, *e, *eos = str + strlen(str); int ret = -1; @@ -221,6 +226,8 @@ int evlist__multiply_cgroup(struct evlist *evlist, const char *str) /* save original events and init evlist */ perf_evlist__splice_list_tail(orig_list, &evlist->core.entries); evlist->core.nr_entries = 0; + orig_metric_events = *metric_events; + rblist__init(metric_events); for (;;) { p = strchr(str, ','); @@ -256,6 +263,11 @@ int evlist__multiply_cgroup(struct evlist *evlist, const char *str) cgroup__put(cgrp); nr_cgroups++; + perf_stat__collect_metric_expr(tmp_list); + if (metricgroup__copy_metric_events(tmp_list, cgrp, metric_events, + &orig_metric_events) < 0) + break; + perf_evlist__splice_list_tail(evlist, &tmp_list->core.entries); tmp_list->core.nr_entries = 0; @@ -267,6 +279,7 @@ int evlist__multiply_cgroup(struct evlist *evlist, const char *str) } evlist__delete(orig_list); evlist__delete(tmp_list); + rblist__exit(&orig_metric_events); return ret; } diff --git a/tools/perf/util/cgroup.h b/tools/perf/util/cgroup.h index 9a842f243dfb..87dde992a172 100644 --- a/tools/perf/util/cgroup.h +++ b/tools/perf/util/cgroup.h @@ -23,9 +23,11 @@ struct cgroup *cgroup__get(struct cgroup *cgroup); void cgroup__put(struct cgroup *cgroup); struct evlist; +struct rblist; struct cgroup *evlist__findnew_cgroup(struct evlist *evlist, const char *name); -int evlist__multiply_cgroup(struct evlist *evlist, const char *cgroups); +int evlist__multiply_cgroup(struct evlist *evlist, const char *cgroups, + struct rblist *metric_events); void evlist__set_default_cgroup(struct evlist *evlist, struct cgroup *cgroup); diff --git a/tools/perf/util/evlist.c b/tools/perf/util/evlist.c index e3fa3bf7498a..457df8ce1fd9 100644 --- a/tools/perf/util/evlist.c +++ b/tools/perf/util/evlist.c @@ -1866,3 +1866,14 @@ int evlist__ctlfd_process(struct evlist *evlist, enum evlist_ctl_cmd *cmd) return err; } + +struct evsel *evlist__get_evsel(struct evlist *evlist, int idx) +{ + struct evsel *evsel; + + evlist__for_each_entry(evlist, evsel) { + if (evsel->idx == idx) + return evsel; + } + return NULL; +} diff --git a/tools/perf/util/evlist.h b/tools/perf/util/evlist.h index c73f7f7f120b..57f5fd5e6290 100644 --- a/tools/perf/util/evlist.h +++ b/tools/perf/util/evlist.h @@ -381,4 +381,5 @@ int evlist__ctlfd_process(struct evlist *evlist, enum evlist_ctl_cmd *cmd); #define EVLIST_ENABLED_MSG "Events enabled\n" #define EVLIST_DISABLED_MSG "Events disabled\n" +struct evsel *evlist__get_evsel(struct evlist *evlist, int idx); #endif /* __PERF_EVLIST_H */ diff --git a/tools/perf/util/metricgroup.c b/tools/perf/util/metricgroup.c index 8831b964288f..f4a67bf85a7c 100644 --- a/tools/perf/util/metricgroup.c +++ b/tools/perf/util/metricgroup.c @@ -25,6 +25,7 @@ #include #include "util.h" #include +#include "cgroup.h" struct metric_event *metricgroup__lookup(struct rblist *metric_events, struct evsel *evsel, @@ -1104,3 +1105,79 @@ bool metricgroup__has_metric(const char *metric) } return false; } + +int metricgroup__copy_metric_events(struct evlist *evlist, struct cgroup *cgrp, + struct rblist *new_metric_events, + struct rblist *old_metric_events) +{ + unsigned i; + + for (i = 0; i < rblist__nr_entries(old_metric_events); i++) { + struct rb_node *nd; + struct metric_event *old_me, *new_me; + struct metric_expr *old_expr, *new_expr; + struct evsel *evsel; + size_t alloc_size; + int idx, nr; + + nd = rblist__entry(old_metric_events, i); + old_me = container_of(nd, struct metric_event, nd); + + evsel = evlist__get_evsel(evlist, old_me->evsel->idx); + new_me = metricgroup__lookup(new_metric_events, evsel, true); + if (!new_me) + return -ENOMEM; + + pr_debug("copying metric event for cgroup '%s': %s (idx=%d)\n", + cgrp ? cgrp->name : "root", evsel->name, evsel->idx); + + list_for_each_entry(old_expr, &old_me->head, nd) { + new_expr = malloc(sizeof(*new_expr)); + if (!new_expr) + return -ENOMEM; + + new_expr->metric_expr = old_expr->metric_expr; + new_expr->metric_name = old_expr->metric_name; + new_expr->metric_unit = old_expr->metric_unit; + new_expr->runtime = old_expr->runtime; + + if (old_expr->metric_refs) { + /* calculate number of metric_events */ + for (nr = 0; old_expr->metric_refs[nr].metric_name; nr++) + continue; + alloc_size = sizeof(*new_expr->metric_refs); + new_expr->metric_refs = calloc(nr + 1, alloc_size); + if (!new_expr->metric_refs) { + free(new_expr); + return -ENOMEM; + } + + memcpy(new_expr->metric_refs, old_expr->metric_refs, + nr * alloc_size); + } else { + new_expr->metric_refs = NULL; + } + + /* calculate number of metric_events */ + for (nr = 0; old_expr->metric_events[nr]; nr++) + continue; + alloc_size = sizeof(*new_expr->metric_events); + new_expr->metric_events = calloc(nr + 1, alloc_size); + if (!new_expr->metric_events) { + free(new_expr->metric_refs); + free(new_expr); + return -ENOMEM; + } + + /* copy evsel in the same position */ + for (idx = 0; idx < nr; idx++) { + evsel = old_expr->metric_events[idx]; + evsel = evlist__get_evsel(evlist, evsel->idx); + new_expr->metric_events[idx] = evsel; + } + + list_add(&new_expr->nd, &new_me->head); + } + } + return 0; +} diff --git a/tools/perf/util/metricgroup.h b/tools/perf/util/metricgroup.h index 62623a39cbec..bb9ea9e1ea9a 100644 --- a/tools/perf/util/metricgroup.h +++ b/tools/perf/util/metricgroup.h @@ -6,11 +6,13 @@ #include #include +struct evlist; struct evsel; struct evlist; struct option; struct rblist; struct pmu_events_map; +struct cgroup; struct metric_event { struct rb_node nd; @@ -54,4 +56,8 @@ void metricgroup__print(bool metrics, bool groups, char *filter, bool metricgroup__has_metric(const char *metric); int arch_get_runtimeparam(void); void metricgroup__rblist_exit(struct rblist *metric_events); + +int metricgroup__copy_metric_events(struct evlist *evlist, struct cgroup *cgrp, + struct rblist *new_metric_events, + struct rblist *old_metric_events); #endif -- 2.28.0.526.ge36021eeef-goog