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| author | Arnaldo Carvalho de Melo <acme@redhat.com> | 2019-09-30 10:55:34 -0300 |
|---|---|---|
| committer | Arnaldo Carvalho de Melo <acme@redhat.com> | 2019-09-30 17:29:54 -0300 |
| commit | f67001a4a08eb124197ed4376941e1da9cf94b42 (patch) | |
| tree | eefcba28c5bcf432fffa16ede2c7bf5b0b3868d3 /tools/perf/builtin-kvm.c | |
| parent | 6bdfd9f118bd59cf0f85d3bf4b72b586adea17c1 (diff) | |
| download | lwn-f67001a4a08eb124197ed4376941e1da9cf94b42.tar.gz lwn-f67001a4a08eb124197ed4376941e1da9cf94b42.zip | |
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.c | 7 |
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 |