Re: [PATCH 1/2] perf,tools: get correct cpu id for print_aggr

[Jiri Olsa]

On Mon, Jun 29, 2015 at 03:55:34PM -0400, kan.li...@intel.com wrote:
> From: Kan Liang <kan.li...@intel.com>
> 
> print_aggr fails to print per-core/per-socket statistics after commit
> b7f0c203586b ("perf evlist: Propagate cpu maps to evsels in an evlist"),
> if events have differnt cpus. Because in print_aggr, aggr_get_id needs
> index (not cpu id) to find core/pkg id.
> This patch introduced perf_evsel__get_cpumap_index to get the index by
> cpu id for a given event. The index can be used to find correct cpu id
> for print_aggr.
> 

SNIP

> 
> diff --git a/tools/perf/builtin-stat.c b/tools/perf/builtin-stat.c
> index 37e301a..a3ea735 100644
> --- a/tools/perf/builtin-stat.c
> +++ b/tools/perf/builtin-stat.c
> @@ -708,6 +708,7 @@ static void print_aggr(char *prefix)
>                       nr = 0;
>                       for (cpu = 0; cpu < perf_evsel__nr_cpus(counter); 
> cpu++) {
>                               cpu2 = perf_evsel__cpus(counter)->map[cpu];
> +                             cpu2 = perf_evsel__get_cpumap_index(cpu2, 
> evsel_list->cpus);
>                               s2 = aggr_get_id(evsel_list->cpus, cpu2);
>                               if (s2 != id)
>                                       continue;

hum, looks like passing the actual cpu number was introduced in:
  582ec0829b3d perf stat: Fix per-socket output bug for uncore events

also, we already have the index into counter's cpus, why not use those
for getting aggregated id (core,socket).. what do I miss?

thanks,
jirka


---
diff --git a/tools/perf/builtin-stat.c b/tools/perf/builtin-stat.c
index 37e301a32f43..47c3c1ffea45 100644
--- a/tools/perf/builtin-stat.c
+++ b/tools/perf/builtin-stat.c
@@ -694,7 +694,7 @@ static void abs_printout(int id, int nr, struct perf_evsel 
*evsel, double avg)
 static void print_aggr(char *prefix)
 {
        struct perf_evsel *counter;
-       int cpu, cpu2, s, s2, id, nr;
+       int cpu, s, s2, id, nr;
        double uval;
        u64 ena, run, val;
 
@@ -707,8 +707,7 @@ static void print_aggr(char *prefix)
                        val = ena = run = 0;
                        nr = 0;
                        for (cpu = 0; cpu < perf_evsel__nr_cpus(counter); 
cpu++) {
-                               cpu2 = perf_evsel__cpus(counter)->map[cpu];
-                               s2 = aggr_get_id(evsel_list->cpus, cpu2);
+                               s2 = aggr_get_id(perf_evsel__cpus(counter), 
cpu);
                                if (s2 != id)
                                        continue;
                                val += perf_counts(counter->counts, cpu, 
0)->val;
--
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