diff options
author | Sukadev Bhattiprolu <sukadev@linux.vnet.ibm.com> | 2015-12-03 18:26:40 -0500 |
---|---|---|
committer | Arnaldo Carvalho de Melo <acme@redhat.com> | 2016-03-11 13:45:04 -0300 |
commit | 4c9d6c18fdebfcfb18918a656355a3c7c3d45e13 (patch) | |
tree | c171a08ba533f1a85bf30affe758e229d4ec5ac5 /tools | |
parent | ced30bc9129777d715057d06fc8dbdfd3b81e94d (diff) |
perf test: Remove 'core_id' check in topo test
The topology test case of 'perf test' seems to be broken on my x86
system - due to the comparison of a "core-id" with # of CPUs online.
There are 8 online CPUs:
$ cat /sys/devices/system/cpu/online
0-7
but core-ids are not sequential and some core-ids exceed the number
of online CPUs.
$ cat /sys/devices/system/cpu/cpu?/topology/core_id
0
1
9
10
0
1
9
10
Looks like we can safely remove the check. Output before:
$ perf --version
perf version 4.4.rc1.g34258a
$ perf test -v topo
36: Test topology in session :
--- start ---
test child forked, pid 5906
templ file: /tmp/perf-test-vCwWG3
core_id number is too big.You may need to upgrade the perf tool.
test child interrupted
---- end ----
Test topology in session: FAILED!
and after:
$ perf test -v topo
36: Test topology in session :
--- start ---
test child forked, pid 6532
templ file: /tmp/perf-test-y10wFJ
CPU 0, core 0, socket 0
CPU 1, core 1, socket 0
CPU 2, core 9, socket 0
CPU 3, core 10, socket 0
CPU 4, core 0, socket 1
CPU 5, core 1, socket 1
CPU 6, core 9, socket 1
CPU 7, core 10, socket 1
test child finished with 0
---- end ----
Test topology in session: Ok
Signed-off-by: Sukadev Bhattiprolu <sukadev@linux.vnet.ibm.com>
Cc: Jan Stancek <jstancek@redhat.com>
Cc: Jiri Olsa <jolsa@redhat.com>
Cc: Kan Liang <kan.liang@intel.com>
Link: http://lkml.kernel.org/r/20151203233219.GA27696@us.ibm.com
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Diffstat (limited to 'tools')
-rw-r--r-- | tools/perf/util/header.c | 5 |
1 files changed, 0 insertions, 5 deletions
diff --git a/tools/perf/util/header.c b/tools/perf/util/header.c index 73e38e472ecd..90680ec9f8b8 100644 --- a/tools/perf/util/header.c +++ b/tools/perf/util/header.c @@ -1872,11 +1872,6 @@ static int process_cpu_topology(struct perf_file_section *section, if (ph->needs_swap) nr = bswap_32(nr); - if (nr > (u32)cpu_nr) { - pr_debug("core_id number is too big." - "You may need to upgrade the perf tool.\n"); - goto free_cpu; - } ph->env.cpu[i].core_id = nr; ret = readn(fd, &nr, sizeof(nr)); |