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Date: Wed, 15 Jul 2020 10:42:14 -0700
From: Ian Rogers <irogers@...gle.com>
To: Jiri Olsa <jolsa@...nel.org>
Cc: Arnaldo Carvalho de Melo <acme@...nel.org>,
lkml <linux-kernel@...r.kernel.org>,
Ingo Molnar <mingo@...nel.org>,
Namhyung Kim <namhyung@...nel.org>,
Alexander Shishkin <alexander.shishkin@...ux.intel.com>,
Peter Zijlstra <a.p.zijlstra@...llo.nl>,
Michael Petlan <mpetlan@...hat.com>,
Andi Kleen <ak@...ux.intel.com>,
Kajol Jain <kjain@...ux.ibm.com>,
John Garry <john.garry@...wei.com>,
"Paul A. Clarke" <pc@...ibm.com>,
Stephane Eranian <eranian@...gle.com>
Subject: Re: [PATCH 17/18] perf metric: Rename struct egroup to metric
On Sun, Jul 12, 2020 at 6:27 AM Jiri Olsa <jolsa@...nel.org> wrote:
>
> Renaming struct egroup to metric, because it seems
> to make more sense. Plus renaming all the variables
> that hold egroup to appropriate names.
>
> Signed-off-by: Jiri Olsa <jolsa@...nel.org>
Awesome, thanks for improving readability!
Acked-by: Ian Rogers <irogers@...gle.com>
> ---
> tools/perf/util/metricgroup.c | 158 +++++++++++++++++-----------------
> 1 file changed, 79 insertions(+), 79 deletions(-)
>
> diff --git a/tools/perf/util/metricgroup.c b/tools/perf/util/metricgroup.c
> index 69ec20dd737b..9b880a5fb52b 100644
> --- a/tools/perf/util/metricgroup.c
> +++ b/tools/perf/util/metricgroup.c
> @@ -112,7 +112,7 @@ struct metric_ref_node {
>
> #define RECURSION_ID_MAX 100
>
> -struct egroup {
> +struct metric {
> struct list_head nd;
> struct expr_parse_ctx pctx;
> const char *metric_name;
> @@ -242,7 +242,7 @@ static int metricgroup__setup_events(struct list_head *groups,
> struct metric_expr *expr;
> int i = 0;
> int ret = 0;
> - struct egroup *eg;
> + struct metric *m;
> struct evsel *evsel, *tmp;
> unsigned long *evlist_used;
>
> @@ -250,23 +250,23 @@ static int metricgroup__setup_events(struct list_head *groups,
> if (!evlist_used)
> return -ENOMEM;
>
> - list_for_each_entry (eg, groups, nd) {
> + list_for_each_entry (m, groups, nd) {
> struct evsel **metric_events;
> struct metric_ref *metric_refs = NULL;
>
> metric_events = calloc(sizeof(void *),
> - hashmap__size(&eg->pctx.ids) + 1);
> + hashmap__size(&m->pctx.ids) + 1);
> if (!metric_events) {
> ret = -ENOMEM;
> break;
> }
> - evsel = find_evsel_group(perf_evlist, &eg->pctx,
> + evsel = find_evsel_group(perf_evlist, &m->pctx,
> metric_no_merge,
> - eg->has_constraint, metric_events,
> + m->has_constraint, metric_events,
> evlist_used);
> if (!evsel) {
> pr_debug("Cannot resolve %s: %s\n",
> - eg->metric_name, eg->metric_expr);
> + m->metric_name, m->metric_expr);
> free(metric_events);
> continue;
> }
> @@ -289,10 +289,10 @@ static int metricgroup__setup_events(struct list_head *groups,
> * Collect and store collected nested expressions
> * for metric processing.
> */
> - if (eg->refs_cnt) {
> + if (m->refs_cnt) {
> struct metric_ref_node *ref;
>
> - metric_refs = zalloc(sizeof(struct metric_ref) * (eg->refs_cnt + 1));
> + metric_refs = zalloc(sizeof(struct metric_ref) * (m->refs_cnt + 1));
> if (!metric_refs) {
> ret = -ENOMEM;
> free(metric_events);
> @@ -300,7 +300,7 @@ static int metricgroup__setup_events(struct list_head *groups,
> }
>
> i = 0;
> - list_for_each_entry(ref, &eg->refs, list) {
> + list_for_each_entry(ref, &m->refs, list) {
> metric_refs[i].metric_name = ref->metric_name;
> metric_refs[i].metric_expr = ref->metric_expr;
> i++;
> @@ -308,11 +308,11 @@ static int metricgroup__setup_events(struct list_head *groups,
> };
>
> expr->metric_refs = metric_refs;
> - expr->metric_expr = eg->metric_expr;
> - expr->metric_name = eg->metric_name;
> - expr->metric_unit = eg->metric_unit;
> + expr->metric_expr = m->metric_expr;
> + expr->metric_name = m->metric_name;
> + expr->metric_unit = m->metric_unit;
> expr->metric_events = metric_events;
> - expr->runtime = eg->runtime;
> + expr->runtime = m->runtime;
> list_add(&expr->nd, &me->head);
> }
>
> @@ -617,38 +617,38 @@ static int __add_metric(struct list_head *group_list,
> struct pmu_event *pe,
> bool metric_no_group,
> int runtime,
> - struct egroup **egp,
> + struct metric **mp,
> struct expr_id *parent)
> {
> struct metric_ref_node *ref;
> - struct egroup *eg;
> + struct metric *m;
>
> - if (*egp == NULL) {
> + if (*mp == NULL) {
> /*
> * We got in here for the master group,
> * allocate it and put it on the list.
> */
> - eg = zalloc(sizeof(*eg));
> - if (!eg)
> + m = zalloc(sizeof(*m));
> + if (!m)
> return -ENOMEM;
>
> - expr__ctx_init(&eg->pctx);
> - eg->metric_name = pe->metric_name;
> - eg->metric_expr = pe->metric_expr;
> - eg->metric_unit = pe->unit;
> - eg->runtime = runtime;
> - eg->has_constraint = metric_no_group || metricgroup__has_constraint(pe);
> - INIT_LIST_HEAD(&eg->refs);
> - eg->refs_cnt = 0;
> - *egp = eg;
> + expr__ctx_init(&m->pctx);
> + m->metric_name = pe->metric_name;
> + m->metric_expr = pe->metric_expr;
> + m->metric_unit = pe->unit;
> + m->runtime = runtime;
> + m->has_constraint = metric_no_group || metricgroup__has_constraint(pe);
> + INIT_LIST_HEAD(&m->refs);
> + m->refs_cnt = 0;
> + *mp = m;
>
> /* Initialize first recursion exr id with base name. */
> - parent = &eg->recursion.id[0];
> - eg->recursion.cnt = 1;
> + parent = &m->recursion.id[0];
> + m->recursion.cnt = 1;
>
> parent->id = strdup(pe->metric_name);
> if (!parent->id) {
> - free(eg);
> + free(m);
> return -ENOMEM;
> }
> } else {
> @@ -657,7 +657,7 @@ static int __add_metric(struct list_head *group_list,
> * recursive metricgroup__add_metric call, add
> * it to the master group.
> */
> - eg = *egp;
> + m = *mp;
>
> ref = malloc(sizeof(*ref));
> if (!ref)
> @@ -665,22 +665,22 @@ static int __add_metric(struct list_head *group_list,
>
> ref->metric_name = pe->metric_name;
> ref->metric_expr = pe->metric_expr;
> - list_add(&ref->list, &eg->refs);
> - eg->refs_cnt++;
> - eg->has_constraint |= metricgroup__has_constraint(pe);
> + list_add(&ref->list, &m->refs);
> + m->refs_cnt++;
> + m->has_constraint |= metricgroup__has_constraint(pe);
> }
>
> /* Force all found IDs in metric to have us as parent ID. */
> WARN_ON_ONCE(!parent);
> - eg->pctx.parent = parent;
> + m->pctx.parent = parent;
>
> /*
> * For both the master and referenced metrics, we parse
> * all the metric's IDs and add it to the parent context.
> */
> - if (expr__find_other(pe->metric_expr, NULL, &eg->pctx, runtime) < 0) {
> - expr__ctx_clear(&eg->pctx);
> - free(eg);
> + if (expr__find_other(pe->metric_expr, NULL, &m->pctx, runtime) < 0) {
> + expr__ctx_clear(&m->pctx);
> + free(m);
> return -EINVAL;
> }
>
> @@ -688,23 +688,23 @@ static int __add_metric(struct list_head *group_list,
> * We add new group only in the 'master' call,
> * so bail out for referenced metric case.
> */
> - if (eg->refs_cnt)
> + if (m->refs_cnt)
> return 0;
>
> if (list_empty(group_list))
> - list_add(&eg->nd, group_list);
> + list_add(&m->nd, group_list);
> else {
> struct list_head *pos;
>
> /* Place the largest groups at the front. */
> list_for_each_prev(pos, group_list) {
> - struct egroup *old = list_entry(pos, struct egroup, nd);
> + struct metric *old = list_entry(pos, struct metric, nd);
>
> - if (hashmap__size(&eg->pctx.ids) <=
> + if (hashmap__size(&m->pctx.ids) <=
> hashmap__size(&old->pctx.ids))
> break;
> }
> - list_add(&eg->nd, pos);
> + list_add(&m->nd, pos);
> }
>
> return 0;
> @@ -730,7 +730,7 @@ static struct pmu_event *find_metric(const char *metric, struct pmu_events_map *
> return NULL;
> }
>
> -static int recursion_check(struct egroup *eg, const char *id, struct expr_id **parent)
> +static int recursion_check(struct metric *m, const char *id, struct expr_id **parent)
> {
> struct expr_id_data *data;
> struct expr_id *p;
> @@ -742,7 +742,7 @@ static int recursion_check(struct egroup *eg, const char *id, struct expr_id **p
> * if we already processed 'id', if we did, it's recursion
> * and we fail.
> */
> - ret = expr__get_id(&eg->pctx, id, &data);
> + ret = expr__get_id(&m->pctx, id, &data);
> if (ret)
> return ret;
>
> @@ -760,13 +760,13 @@ static int recursion_check(struct egroup *eg, const char *id, struct expr_id **p
> * If we are over the limit of static entris, the metric
> * is too difficult/nested to process, fail as well.
> */
> - if (eg->recursion.cnt + 1 >= RECURSION_ID_MAX) {
> + if (m->recursion.cnt + 1 >= RECURSION_ID_MAX) {
> pr_err("failed: too many nested metrics\n");
> return -EINVAL;
> }
>
> - p = &eg->recursion.id[eg->recursion.cnt];
> - eg->recursion.cnt++;
> + p = &m->recursion.id[m->recursion.cnt];
> + m->recursion.cnt++;
>
> p->id = strdup(id);
> p->parent = data->parent;
> @@ -778,10 +778,10 @@ static int recursion_check(struct egroup *eg, const char *id, struct expr_id **p
> static int add_metric(struct list_head *group_list,
> struct pmu_event *pe,
> bool metric_no_group,
> - struct egroup **egp,
> + struct metric **mp,
> struct expr_id *parent);
>
> -static int resolve_metric(struct egroup *eg,
> +static int resolve_metric(struct metric *m,
> bool metric_no_group,
> struct list_head *group_list,
> struct pmu_events_map *map)
> @@ -797,7 +797,7 @@ static int resolve_metric(struct egroup *eg,
> */
> do {
> all = true;
> - hashmap__for_each_entry((&eg->pctx.ids), cur, bkt) {
> + hashmap__for_each_entry((&m->pctx.ids), cur, bkt) {
> struct expr_id *parent;
> struct pmu_event *pe;
>
> @@ -805,16 +805,16 @@ static int resolve_metric(struct egroup *eg,
> if (!pe)
> continue;
>
> - ret = recursion_check(eg, cur->key, &parent);
> + ret = recursion_check(m, cur->key, &parent);
> if (ret)
> return ret;
>
> all = false;
> /* The metric key itself needs to go out.. */
> - expr__del_id(&eg->pctx, cur->key);
> + expr__del_id(&m->pctx, cur->key);
>
> /* ... and it gets resolved to the parent context. */
> - ret = add_metric(group_list, pe, metric_no_group, &eg, parent);
> + ret = add_metric(group_list, pe, metric_no_group, &m, parent);
> if (ret)
> return ret;
>
> @@ -832,7 +832,7 @@ static int resolve_metric(struct egroup *eg,
> static int add_metric(struct list_head *group_list,
> struct pmu_event *pe,
> bool metric_no_group,
> - struct egroup **egp,
> + struct metric **m,
> struct expr_id *parent)
> {
> int ret = 0;
> @@ -840,7 +840,7 @@ static int add_metric(struct list_head *group_list,
> pr_debug("metric expr %s for %s\n", pe->metric_expr, pe->metric_name);
>
> if (!strstr(pe->metric_expr, "?")) {
> - ret = __add_metric(group_list, pe, metric_no_group, 1, egp, parent);
> + ret = __add_metric(group_list, pe, metric_no_group, 1, m, parent);
> } else {
> int j, count;
>
> @@ -852,7 +852,7 @@ static int add_metric(struct list_head *group_list,
> */
>
> for (j = 0; j < count && !ret; j++) {
> - ret = __add_metric(group_list, pe, metric_no_group, j, egp, parent);
> + ret = __add_metric(group_list, pe, metric_no_group, j, m, parent);
> }
> }
>
> @@ -865,7 +865,7 @@ static int metricgroup__add_metric(const char *metric, bool metric_no_group,
> struct pmu_events_map *map)
>
> {
> - struct egroup *eg = NULL;
> + struct metric *m = NULL;
> struct pmu_event *pe;
> int ret;
>
> @@ -873,7 +873,7 @@ static int metricgroup__add_metric(const char *metric, bool metric_no_group,
> if (!pe)
> return -EINVAL;
>
> - ret = add_metric(group_list, pe, metric_no_group, &eg, NULL);
> + ret = add_metric(group_list, pe, metric_no_group, &m, NULL);
> if (ret)
> return ret;
>
> @@ -881,7 +881,7 @@ static int metricgroup__add_metric(const char *metric, bool metric_no_group,
> * Process any possible referenced metrics
> * included in the expression.
> */
> - ret = resolve_metric(eg, metric_no_group,
> + ret = resolve_metric(m, metric_no_group,
> group_list, map);
> if (ret)
> return ret;
> @@ -893,12 +893,12 @@ static int metricgroup__add_metric(const char *metric, bool metric_no_group,
> * Even if we add multiple groups through the runtime
> * param, they share same events.
> */
> - if (eg->has_constraint) {
> + if (m->has_constraint) {
> metricgroup__add_metric_non_group(events,
> - &eg->pctx);
> + &m->pctx);
> } else {
> metricgroup__add_metric_weak_group(events,
> - &eg->pctx);
> + &m->pctx);
> }
> return 0;
> }
> @@ -936,35 +936,35 @@ static int metricgroup__add_metric_list(const char *list, bool metric_no_group,
> return ret;
> }
>
> -static void egroup__free_refs(struct egroup *egroup)
> +static void metric__free_refs(struct metric *metric)
> {
> struct metric_ref_node *ref, *tmp;
>
> - list_for_each_entry_safe(ref, tmp, &egroup->refs, list) {
> + list_for_each_entry_safe(ref, tmp, &metric->refs, list) {
> list_del(&ref->list);
> free(ref);
> }
> }
>
> -static void egroup__free_recursion(struct egroup *egroup)
> +static void metric__free_recursion(struct metric *metric)
> {
> int i;
>
> - for (i = 0; i < egroup->recursion.cnt; i++) {
> - free(egroup->recursion.id[i].id);
> + for (i = 0; i < metric->recursion.cnt; i++) {
> + free(metric->recursion.id[i].id);
> }
> }
>
> -static void metricgroup__free_egroups(struct list_head *group_list)
> +static void metricgroup__free_metrics(struct list_head *group_list)
> {
> - struct egroup *eg, *egtmp;
> -
> - list_for_each_entry_safe (eg, egtmp, group_list, nd) {
> - egroup__free_recursion(eg);
> - egroup__free_refs(eg);
> - expr__ctx_clear(&eg->pctx);
> - list_del_init(&eg->nd);
> - free(eg);
> + struct metric *m, *tmp;
> +
> + list_for_each_entry_safe (m, tmp, group_list, nd) {
> + metric__free_recursion(m);
> + metric__free_refs(m);
> + expr__ctx_clear(&m->pctx);
> + list_del_init(&m->nd);
> + free(m);
> }
> }
>
> @@ -997,7 +997,7 @@ static int parse_groups(struct evlist *perf_evlist, const char *str,
> ret = metricgroup__setup_events(&group_list, metric_no_merge,
> perf_evlist, metric_events);
> out:
> - metricgroup__free_egroups(&group_list);
> + metricgroup__free_metrics(&group_list);
> return ret;
> }
>
> --
> 2.25.4
>
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