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perf tools: Propagate get_cpuid() error

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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>
This commit is contained in:
Arnaldo Carvalho de Melo
2019-09-30 10:55:34 -03:00
parent 6bdfd9f118
commit f67001a4a0
4 changed files with 13 additions and 9 deletions
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7
tools/perf/builtin-kvm.c
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@@ -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