summaryrefslogtreecommitdiff
path: root/tools/perf/builtin-kvm.c
diff options
context:
space:
mode:
authorArnaldo Carvalho de Melo <acme@redhat.com>2019-09-30 16:55:34 +0300
committerArnaldo Carvalho de Melo <acme@redhat.com>2019-09-30 23:29:54 +0300
commitf67001a4a08eb124197ed4376941e1da9cf94b42 (patch)
treeeefcba28c5bcf432fffa16ede2c7bf5b0b3868d3 /tools/perf/builtin-kvm.c
parent6bdfd9f118bd59cf0f85d3bf4b72b586adea17c1 (diff)
downloadlinux-f67001a4a08eb124197ed4376941e1da9cf94b42.tar.xz
perf tools: Propagate get_cpuid() error
For consistency, propagate the exact cause for get_cpuid() to have failed. Cc: Adrian Hunter <adrian.hunter@intel.com> Cc: Jiri Olsa <jolsa@kernel.org> Cc: Namhyung Kim <namhyung@kernel.org> Link: https://lkml.kernel.org/n/tip-9ig269f7ktnhh99g4l15vpu2@git.kernel.org Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Diffstat (limited to 'tools/perf/builtin-kvm.c')
-rw-r--r--tools/perf/builtin-kvm.c7
1 files changed, 4 insertions, 3 deletions
diff --git a/tools/perf/builtin-kvm.c b/tools/perf/builtin-kvm.c
index 2227e2f42c09..58a9e0989491 100644
--- a/tools/perf/builtin-kvm.c
+++ b/tools/perf/builtin-kvm.c
@@ -705,14 +705,15 @@ static int process_sample_event(struct perf_tool *tool,
static int cpu_isa_config(struct perf_kvm_stat *kvm)
{
- char buf[64], *cpuid;
+ char buf[128], *cpuid;
int err;
if (kvm->live) {
err = get_cpuid(buf, sizeof(buf));
if (err != 0) {
- pr_err("Failed to look up CPU type\n");
- return err;
+ pr_err("Failed to look up CPU type: %s\n",
+ str_error_r(err, buf, sizeof(buf)));
+ return -err;
}
cpuid = buf;
} else