[PATCH v2 16/19] perf, tools, stat: Don't use ctx for saved values lookup

Andi Kleen
2017-08-11T23:26:52Z

From: Andi Kleen <ak@linux.intel.com>

We don't need to use ctx to look up events for saved values.
The context is already part of the evsel pointer, which is the
primary key.

Signed-off-by: Andi Kleen <ak@linux.intel.com>
---
tools/perf/util/stat-shadow.c | 16 +++++-----------
1 file changed, 5 insertions(+), 11 deletions(-)

diff --git a/tools/perf/util/stat-shadow.c b/tools/perf/util/stat-shadow.c
index 49b9931a7f63..11be64223196 100644
--- a/tools/perf/util/stat-shadow.c
+++ b/tools/perf/util/stat-shadow.c
@@ -56,7 +56,6 @@ struct saved_value {
struct rb_node rb_node;
struct perf_evsel *evsel;
int cpu;
- int ctx;
struct stats stats;
};

@@ -67,8 +66,6 @@ static int saved_value_cmp(struct rb_node *rb_node, const void *entry)
rb_node);
const struct saved_value *b = entry;

- if (a->ctx != b->ctx)
- return a->ctx - b->ctx;
if (a->cpu != b->cpu)
return a->cpu - b->cpu;
if (a->evsel == b->evsel)
@@ -90,13 +87,12 @@ static struct rb_node *saved_value_new(struct rblist *rblist __maybe_unused,
}

static struct saved_value *saved_value_lookup(struct perf_evsel *evsel,
- int cpu, int ctx,
+ int cpu,
bool create)
{
struct rb_node *nd;
struct saved_value dm = {
.cpu = cpu,
- .ctx = ctx,
.evsel = evsel,
};
nd = rblist__find(&runtime_saved_values, &dm);
@@ -232,8 +228,7 @@ void perf_stat__update_shadow_stats(struct perf_evsel *counter, u64 *count,
update_stats(&runtime_aperf_stats[ctx][cpu], count[0]);

if (counter->collect_stat) {
- struct saved_value *v = saved_value_lookup(counter, cpu, ctx,
- true);
+ struct saved_value *v = saved_value_lookup(counter, cpu, true);
update_stats(&v->stats, count[0]);
}
}
@@ -634,7 +629,6 @@ static void generic_metric(const char *metric_expr,
const char *metric_name,
double avg,
int cpu,
- int ctx,
struct perf_stat_output_ctx *out)
{
print_metric_t print_metric = out->print_metric;
@@ -648,7 +642,7 @@ static void generic_metric(const char *metric_expr,
for (i = 0; metric_events[i]; i++) {
struct saved_value *v;

- v = saved_value_lookup(metric_events[i], cpu, ctx, false);
+ v = saved_value_lookup(metric_events[i], cpu, false);
if (!v)
break;
expr__add_id(&pctx, metric_events[i]->name, avg_stats(&v->stats));
@@ -866,7 +860,7 @@ void perf_stat__print_shadow_stats(struct perf_evsel *evsel,
print_metric(ctxp, NULL, NULL, name, 0);
} else if (evsel->metric_expr) {
generic_metric(evsel->metric_expr, evsel->metric_events, evsel->name,
- evsel->metric_name, avg, cpu, ctx, out);
+ evsel->metric_name, avg, cpu, out);
} else if (runtime_nsecs_stats[cpu].n != 0) {
char unit = 'M';
char unit_buf[10];
@@ -895,7 +889,7 @@ void perf_stat__print_shadow_stats(struct perf_evsel *evsel,
out->new_line(ctxp);
generic_metric(mexp->metric_expr, mexp->metric_events,
evsel->name, mexp->metric_name,
- avg, cpu, ctx, out);
+ avg, cpu, out);
}
}
if (num == 0)
--
2.9.4