linux-kernel - [tip:perf/urgent] perf test session topology: Fix test on s390

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Message-ID: <tip-b930e62ecd362843002bdf84c2940439822af321@git.kernel.org>
Date:   Mon, 25 Jun 2018 23:52:17 -0700
From:   tip-bot for Thomas Richter <tipbot@...or.com>
To:     linux-tip-commits@...r.kernel.org
Cc:     hpa@...or.com, schwidefsky@...ibm.com, acme@...hat.com,
        mingo@...nel.org, linux-kernel@...r.kernel.org,
        tmricht@...ux.ibm.com, brueckner@...ux.ibm.com, tglx@...utronix.de,
        heiko.carstens@...ibm.com
Subject: [tip:perf/urgent] perf test session topology: Fix test on s390

Commit-ID:  b930e62ecd362843002bdf84c2940439822af321
Gitweb:     https://git.kernel.org/tip/b930e62ecd362843002bdf84c2940439822af321
Author:     Thomas Richter <tmricht@...ux.ibm.com>
AuthorDate: Mon, 11 Jun 2018 09:31:53 +0200
Committer:  Arnaldo Carvalho de Melo <acme@...hat.com>
CommitDate: Mon, 25 Jun 2018 11:59:35 -0300

perf test session topology: Fix test on s390

On s390 this test case fails because the socket identifiction numbers
assigned to the CPU are higher than the CPU identification numbers.

F/ix this by adding the platform architecture into the perf data header
flag information. This helps identifiing the test platform and handles
s390 specifics in process_cpu_topology().

Before:

  [root@...lp27 perf]# perf test -vvvvv -F 39
  39: Session topology                                      :
  --- start ---
  templ file: /tmp/perf-test-iUv755
  socket_id number is too big.You may need to upgrade the perf tool.
  ---- end ----
  Session topology: Skip
  [root@...lp27 perf]#

After:

  [root@...lp27 perf]# perf test -vvvvv -F 39
  39: Session topology                                      :
  --- start ---
  templ file: /tmp/perf-test-8X8VTs
  CPU 0, core 0, socket 6
  CPU 1, core 1, socket 3
  ---- end ----
  Session topology: Ok
  [root@...lp27 perf]#

Signed-off-by: Thomas Richter <tmricht@...ux.ibm.com>
Reviewed-by: Hendrik Brueckner <brueckner@...ux.ibm.com>
Cc: Heiko Carstens <heiko.carstens@...ibm.com>
Cc: Martin Schwidefsky <schwidefsky@...ibm.com>
Fixes: c84974ed9fb6 ("perf test: Add entry to test cpu topology")
Link: http://lkml.kernel.org/r/20180611073153.15592-2-tmricht@linux.ibm.com
Signed-off-by: Arnaldo Carvalho de Melo <acme@...hat.com>
---
 tools/perf/tests/topology.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/tools/perf/tests/topology.c b/tools/perf/tests/topology.c
index 40e30a26b23c..9497d02f69e6 100644
--- a/tools/perf/tests/topology.c
+++ b/tools/perf/tests/topology.c
@@ -45,6 +45,7 @@ static int session_write_header(char *path)
 
 	perf_header__set_feat(&session->header, HEADER_CPU_TOPOLOGY);
 	perf_header__set_feat(&session->header, HEADER_NRCPUS);
+	perf_header__set_feat(&session->header, HEADER_ARCH);
 
 	session->header.data_size += DATA_SIZE;