From: Li Huafei <lihuafei1@huawei.com> maillist inclusion category: bugfix bugzilla: 175624 https://gitee.com/openeuler/kernel/issues/I4DDEL Reference: https://lkml.org/lkml/2021/7/26/406 -------------------------------- When users use the perf annotate feature on unsupported machines, error logs should be printed for user feedback. Signed-off-by: Li Huafei <lihuafei1@huawei.com> Reviewed-by: James Clark <james.clark@arm.com> Signed-off-by: Li Huafei <lihuafei1@huawei.com> Reviewed-by: Kuohai Xu <xukuohai@huawei.com> Signed-off-by: Chen Jun <chenjun102@huawei.com> --- tools/perf/util/annotate.c | 4 +++- 1 file changed, 3 insertions(+), 1 deletion(-) diff --git a/tools/perf/util/annotate.c b/tools/perf/util/annotate.c index 308189454788..4aaaf23b4878 100644 --- a/tools/perf/util/annotate.c +++ b/tools/perf/util/annotate.c @@ -2178,8 +2178,10 @@ int symbol__annotate(struct map_symbol *ms, struct evsel *evsel, return errno; args.arch = arch = arch__find(arch_name); - if (arch == NULL) + if (arch == NULL) { + pr_err("%s: unsupported arch %s\n", __func__, arch_name); return ENOTSUP; + } if (parch) *parch = arch; -- 2.20.1