From: Tan Xiaojun tanxiaojun@huawei.com
[ Upstream commit 0a4d8fb229dd78f9e0752817339e19e903b37a60 ]
Same as in the commit 01766229533f ("perf record: Support s390 random socket_id assignment"), aarch64 also have this problem.
Without this fix:
[root@localhost perf]# ./perf report --header -I -v ... socket_id number is too big.You may need to upgrade the perf tool.
# ======== # captured on : Thu Aug 1 22:58:38 2019 # header version : 1 ... # Core ID and Socket ID information is not available ...
With this fix: [root@localhost perf]# ./perf report --header -I -v ... cpumask list: 0-31 cpumask list: 32-63 cpumask list: 64-95 cpumask list: 96-127
# ======== # captured on : Thu Aug 1 22:58:38 2019 # header version : 1 ... # CPU 0: Core ID 0, Socket ID 36 # CPU 1: Core ID 1, Socket ID 36 ... # CPU 126: Core ID 126, Socket ID 8442 # CPU 127: Core ID 127, Socket ID 8442 ...
Signed-off-by: Tan Xiaojun tanxiaojun@huawei.com Acked-by: Jiri Olsa jolsa@kernel.org Cc: Alexander Shishkin alexander.shishkin@linux.intel.com Cc: Alexey Budankov alexey.budankov@linux.intel.com Cc: Kan Liang kan.liang@linux.intel.com Cc: Namhyung Kim namhyung@kernel.org Cc: Peter Zijlstra peterz@infradead.org Cc: Song Liu songliubraving@fb.com Cc: Steven Rostedt (VMware) rostedt@goodmis.org Cc: Tzvetomir Stoyanov (VMware) tz.stoyanov@gmail.com Link: http://lkml.kernel.org/r/1564717737-21602-1-git-send-email-tanxiaojun@huawei... Signed-off-by: Arnaldo Carvalho de Melo acme@redhat.com Signed-off-by: Sasha Levin sashal@kernel.org --- tools/perf/util/header.c | 4 +++- 1 file changed, 3 insertions(+), 1 deletion(-)
diff --git a/tools/perf/util/header.c b/tools/perf/util/header.c index 54c34c107cab5..0c70788593c8d 100644 --- a/tools/perf/util/header.c +++ b/tools/perf/util/header.c @@ -2184,8 +2184,10 @@ static int process_cpu_topology(struct feat_fd *ff, void *data __maybe_unused) /* On s390 the socket_id number is not related to the numbers of cpus. * The socket_id number might be higher than the numbers of cpus. * This depends on the configuration. + * AArch64 is the same. */ - if (ph->env.arch && !strncmp(ph->env.arch, "s390", 4)) + if (ph->env.arch && (!strncmp(ph->env.arch, "s390", 4) + || !strncmp(ph->env.arch, "aarch64", 7))) do_core_id_test = false;
for (i = 0; i < (u32)cpu_nr; i++) {