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Message-Id: <20230322094731.1768281-1-tmricht@linux.ibm.com>
Date: Wed, 22 Mar 2023 10:47:31 +0100
From: Thomas Richter <tmricht@...ux.ibm.com>
To: linux-kernel@...r.kernel.org, linux-perf-users@...r.kernel.org,
acme@...nel.org, acme@...hat.com
Cc: svens@...ux.ibm.com, gor@...ux.ibm.com, sumanthk@...ux.ibm.com,
hca@...ux.ibm.com, Thomas Richter <tmricht@...ux.ibm.com>,
Namhyung Kim <namhyung@...nel.org>
Subject: [Ping PATCH] perf/test: Fix wrong size for perf test Setup struct perf_event_attr
The test case ./perf test 'Setup struct perf_event_attr' fails.
On s390 this output is observed:
# ./perf test -Fvvvv 17
17: Setup struct perf_event_attr :
--- start ---
running './tests/attr/test-stat-C0'
Using CPUID IBM,8561,703,T01,3.6,002f
.....
Event event:base-stat
fd = 1
group_fd = -1
flags = 0|8
cpu = *
type = 0
size = 128 <<<--- wrong, specified in file base-stat
config = 0
sample_period = 0
sample_type = 65536
...
'PERF_TEST_ATTR=/tmp/tmpgw574wvg ./perf stat -o \
/tmp/tmpgw574wvg/perf.data -e cycles -C 0 kill >/dev/null \
2>&1 ret '1', expected '1'
loading result events
Event event-0-0-4
fd = 4
group_fd = -1
cpu = 0
pid = -1
flags = 8
type = 0
size = 136 <<<--- actual size used in system call
.....
compare
matching [event-0-0-4]
to [event:base-stat]
[cpu] 0 *
[flags] 8 0|8
[type] 0 0
[size] 136 128
->FAIL
match: [event-0-0-4] matches []
expected size=136, got 128
FAILED './tests/attr/test-stat-C0' - match failure
This mismatch is caused by
commit 09519ec3b19e ("perf: Add perf_event_attr::config3")
which enlarges the structure perf_event_attr by 8 bytes.
Fix this by adjusting the expected value of size.
Output after:
# ./perf test -Fvvvv 17
17: Setup struct perf_event_attr :
--- start ---
running './tests/attr/test-stat-C0'
Using CPUID IBM,8561,703,T01,3.6,002f
...
matched
compare
matching [event-0-0-4]
to [event:base-stat]
[cpu] 0 *
[flags] 8 0|8
[type] 0 0
[size] 136 136
....
->OK
match: [event-0-0-4] matches ['event:base-stat']
matched
Fixes: 09519ec3b19e ("perf: Add perf_event_attr::config3")
Signed-off-by: Thomas Richter <tmricht@...ux.ibm.com>
Acked-by: Namhyung Kim <namhyung@...nel.org>
---
tools/perf/tests/attr/base-record | 2 +-
tools/perf/tests/attr/base-stat | 2 +-
tools/perf/tests/attr/system-wide-dummy | 2 +-
3 files changed, 3 insertions(+), 3 deletions(-)
diff --git a/tools/perf/tests/attr/base-record b/tools/perf/tests/attr/base-record
index 3ef07a12aa14..27c21271a16c 100644
--- a/tools/perf/tests/attr/base-record
+++ b/tools/perf/tests/attr/base-record
@@ -5,7 +5,7 @@ group_fd=-1
flags=0|8
cpu=*
type=0|1
-size=128
+size=136
config=0
sample_period=*
sample_type=263
diff --git a/tools/perf/tests/attr/base-stat b/tools/perf/tests/attr/base-stat
index 408164456530..a21fb65bc012 100644
--- a/tools/perf/tests/attr/base-stat
+++ b/tools/perf/tests/attr/base-stat
@@ -5,7 +5,7 @@ group_fd=-1
flags=0|8
cpu=*
type=0
-size=128
+size=136
config=0
sample_period=0
sample_type=65536
diff --git a/tools/perf/tests/attr/system-wide-dummy b/tools/perf/tests/attr/system-wide-dummy
index 8fec06eda5f9..2f3e3eb728eb 100644
--- a/tools/perf/tests/attr/system-wide-dummy
+++ b/tools/perf/tests/attr/system-wide-dummy
@@ -7,7 +7,7 @@ cpu=*
pid=-1
flags=8
type=1
-size=128
+size=136
config=9
sample_period=4000
sample_type=455
--
2.39.1
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