perf kvm: Use perf_session_env for reading cpuid
We have processed and saved cpuid information to perf_session_env so
reuse it for get_cpu_isa().
Signed-off-by: Namhyung Kim <namhyung@kernel.org>
Cc: David Ahern <dsahern@gmail.com>
Cc: Dong Hao <haodong@linux.vnet.ibm.com>
Cc: Ingo Molnar <mingo@kernel.org>
Cc: Paul Mackerras <paulus@samba.org>
Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
Cc: Stephane Eranian <eranian@google.com>
Cc: Xiao Guangrong <xiaoguangrong@linux.vnet.ibm.com>
Link: http://lkml.kernel.org/r/1348474503-15070-6-git-send-email-namhyung@kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
diff --git a/tools/perf/builtin-kvm.c b/tools/perf/builtin-kvm.c
index 3eb53e3..a28c9ca 100644
--- a/tools/perf/builtin-kvm.c
+++ b/tools/perf/builtin-kvm.c
@@ -664,16 +664,9 @@
static int get_cpu_isa(struct perf_session *session)
{
- char *cpuid;
+ char *cpuid = session->header.env.cpuid;
int isa;
- cpuid = perf_header__read_feature(session, HEADER_CPUID);
-
- if (!cpuid) {
- pr_err("read HEADER_CPUID failed.\n");
- return -ENOTSUP;
- }
-
if (strstr(cpuid, "Intel"))
isa = 1;
else if (strstr(cpuid, "AMD"))
@@ -683,7 +676,6 @@
isa = -ENOTSUP;
}
- free(cpuid);
return isa;
}
