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authorAndi Kleen <ak@linux.intel.com>2014-09-24 22:50:46 +0200
committerArnaldo Carvalho de Melo <acme@redhat.com>2014-09-26 15:17:13 +0200
commitda88c7f78d842a6938d9adde6af87a2ce262051d (patch)
tree9a5cb01c15a56d7ca6a309ae5f570cbf593fb6e7 /tools
parentMerge tag 'perf-fdarray-for-mingo' of git://git.kernel.org/pub/scm/linux/kern... (diff)
downloadlinux-da88c7f78d842a6938d9adde6af87a2ce262051d.tar.xz
linux-da88c7f78d842a6938d9adde6af87a2ce262051d.zip
perf stat: Fix --per-core on multi socket systems
On systems with more than one socket perf stat --per-core would either segfault or stop before outputting all cores. The problem was that the output code referenced the id including the socket number in the higher bits, which is far beyond any per cpu array. Mask out the socket number before referencing cpus in abs_printout. I also renamed the variable in nsec_printout to be clear what it is, even though it doesn't reference cpus. Signed-off-by: Andi Kleen <ak@linux.intel.com> Acked-by: Stephane Eranian <eranian@google.com> Cc: Jiri Olsa <jolsa@redhat.com> Cc: Namhyung Kim <namhyung@kernel.org> Cc: Stephane Eranian <eranian@google.com> Link: http://lkml.kernel.org/r/1411591846-32736-1-git-send-email-andi@firstfloor.org Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Diffstat (limited to 'tools')
-rw-r--r--tools/perf/builtin-stat.c9
1 files changed, 5 insertions, 4 deletions
diff --git a/tools/perf/builtin-stat.c b/tools/perf/builtin-stat.c
index 5fe0edb1de5d..b22c62f80078 100644
--- a/tools/perf/builtin-stat.c
+++ b/tools/perf/builtin-stat.c
@@ -732,7 +732,7 @@ static void aggr_printout(struct perf_evsel *evsel, int id, int nr)
}
}
-static void nsec_printout(int cpu, int nr, struct perf_evsel *evsel, double avg)
+static void nsec_printout(int id, int nr, struct perf_evsel *evsel, double avg)
{
double msecs = avg / 1e6;
const char *fmt_v, *fmt_n;
@@ -741,7 +741,7 @@ static void nsec_printout(int cpu, int nr, struct perf_evsel *evsel, double avg)
fmt_v = csv_output ? "%.6f%s" : "%18.6f%s";
fmt_n = csv_output ? "%s" : "%-25s";
- aggr_printout(evsel, cpu, nr);
+ aggr_printout(evsel, id, nr);
scnprintf(name, sizeof(name), "%s%s",
perf_evsel__name(evsel), csv_output ? "" : " (msec)");
@@ -947,11 +947,12 @@ static void print_ll_cache_misses(int cpu,
fprintf(output, " of all LL-cache hits ");
}
-static void abs_printout(int cpu, int nr, struct perf_evsel *evsel, double avg)
+static void abs_printout(int id, int nr, struct perf_evsel *evsel, double avg)
{
double total, ratio = 0.0, total2;
double sc = evsel->scale;
const char *fmt;
+ int cpu = cpu_map__id_to_cpu(id);
if (csv_output) {
fmt = sc != 1.0 ? "%.2f%s" : "%.0f%s";
@@ -962,7 +963,7 @@ static void abs_printout(int cpu, int nr, struct perf_evsel *evsel, double avg)
fmt = sc != 1.0 ? "%18.2f%s" : "%18.0f%s";
}
- aggr_printout(evsel, cpu, nr);
+ aggr_printout(evsel, id, nr);
if (aggr_mode == AGGR_GLOBAL)
cpu = 0;