linux-kernel - [PATCH] perf stat: fix per-socket output bug for uncore events

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite for Android: free password hash cracker in your pocket

[<prev] [next>] [thread-next>] [day] [month] [year] [list]

Date:	Fri, 5 Jul 2013 19:06:45 +0200
From:	Stephane Eranian <eranian@...gle.com>
To:	linux-kernel@...r.kernel.org
Cc:	peterz@...radead.org, mingo@...e.hu, jolsa@...hat.com,
	ak@...ux.intel.com, zheng.z.yan@...el.com, namhyung.kim@....com
Subject: [PATCH] perf stat: fix per-socket output bug for uncore events


This patch fixes a problem reported by Andi Kleen on perf
stat when measuring uncore events:

 # perf stat --per-socket -e uncore_pcu/event=0x0/ -I1000  -a sleep 2

It would not report counts for the second socket. That was due to a
cpu mapping bug in print_aggr().

This patch also fixes the socket numbering bug for <not counted>
events.

Reported-by: Andi Kleen <ak@...ux.intel.com>
Signed-off-by: Stephane Eranian <eranian@...gle.com>
---

diff --git a/tools/perf/builtin-stat.c b/tools/perf/builtin-stat.c
index 7e910ba..128e168 100644
--- a/tools/perf/builtin-stat.c
+++ b/tools/perf/builtin-stat.c
@@ -924,7 +924,7 @@ static void abs_printout(int cpu, int nr, struct perf_evsel *evsel, double avg)
 static void print_aggr(char *prefix)
 {
 	struct perf_evsel *counter;
-	int cpu, s, s2, id, nr;
+	int cpu, cpu2, s, s2, id, nr;
 	u64 ena, run, val;
 
 	if (!(aggr_map || aggr_get_id))
@@ -936,7 +936,8 @@ static void print_aggr(char *prefix)
 			val = ena = run = 0;
 			nr = 0;
 			for (cpu = 0; cpu < perf_evsel__nr_cpus(counter); cpu++) {
-				s2 = aggr_get_id(evsel_list->cpus, cpu);
+				cpu2 = perf_evsel__cpus(counter)->map[cpu];
+				s2 = aggr_get_id(evsel_list->cpus, cpu2);
 				if (s2 != id)
 					continue;
 				val += counter->counts->cpu[cpu].val;
@@ -948,7 +949,7 @@ static void print_aggr(char *prefix)
 				fprintf(output, "%s", prefix);
 
 			if (run == 0 || ena == 0) {
-				aggr_printout(counter, cpu, nr);
+				aggr_printout(counter, id, nr);
 
 				fprintf(output, "%*s%s%*s",
 					csv_output ? 0 : 18,
--
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@...r.kernel.org
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Please read the FAQ at  http://www.tux.org/lkml/