Commit-ID: 6703c9771d83ebe092b0d49cb0609a3f9d8b4ff7 Gitweb: https://git.kernel.org/tip/6703c9771d83ebe092b0d49cb0609a3f9d8b4ff7 Author: Arnaldo Carvalho de Melo <a...@redhat.com> AuthorDate: Tue, 2 Jan 2018 14:59:21 -0300 Committer: Arnaldo Carvalho de Melo <a...@redhat.com> CommitDate: Mon, 8 Jan 2018 11:11:56 -0300
perf test bpf: Improve message about expected samples When failing on one of the BPF tests we were just stating: BPF filter result incorrect Add some more info to help figuring out the problem: BPF filter result incorrect, expected 56, got 0 samples This came out while investigating this failure, first seen after updating the kernel to the 4.15.0-rc6 tag: [root@jouet ~]# perf test bpf 39: BPF filter : 39.1: Basic BPF filtering : FAILED! 39.2: BPF pinning : Skip 39.3: BPF prologue generation: Skip 39.4: BPF relocation checker : Skip [root@jouet ~]# Cc: Adrian Hunter <adrian.hun...@intel.com> Cc: David Ahern <dsah...@gmail.com> Cc: Jiri Olsa <jo...@kernel.org> Cc: Namhyung Kim <namhy...@kernel.org> Cc: Wang Nan <wangn...@huawei.com> Link: https://lkml.kernel.org/n/tip-403npu7daupv6b2bmxliv...@git.kernel.org Signed-off-by: Arnaldo Carvalho de Melo <a...@redhat.com> --- tools/perf/tests/bpf.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/tools/perf/tests/bpf.c b/tools/perf/tests/bpf.c index c433dd3..057c6b8 100644 --- a/tools/perf/tests/bpf.c +++ b/tools/perf/tests/bpf.c @@ -190,7 +190,7 @@ static int do_test(struct bpf_object *obj, int (*func)(void), } if (count != expect) { - pr_debug("BPF filter result incorrect\n"); + pr_debug("BPF filter result incorrect, expected %d, got %d samples\n", expect, count); goto out_delete_evlist; }
