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| author |   Arnaldo Carvalho de Melo <acme@redhat.com> | 2018-01-02 14:59:21 -0300 |
|---|---|---|
| committer | Arnaldo Carvalho de Melo <acme@redhat.com> | 2018-01-08 11:11:56 -0300 |
| commit | 6703c9771d83ebe092b0d49cb0609a3f9d8b4ff7 (patch) | |
| tree | c4eb1a15088733e29cedc7150c78235ab179575a /tools | |
| parent | perf/x86/msr: Clean up the code (diff) | |
| download | linux-dev-6703c9771d83ebe092b0d49cb0609a3f9d8b4ff7.tar.xz linux-dev-6703c9771d83ebe092b0d49cb0609a3f9d8b4ff7.zip | |
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.hunter@intel.com>
Cc: David Ahern <dsahern@gmail.com>
Cc: Jiri Olsa <jolsa@kernel.org>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Wang Nan <wangnan0@huawei.com>
Link: https://lkml.kernel.org/n/tip-403npu7daupv6b2bmxliv5pk@git.kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Diffstat (limited to 'tools')
| -rw-r--r-- | tools/perf/tests/bpf.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/tools/perf/tests/bpf.c b/tools/perf/tests/bpf.c index c433dd30975a..057c6b8fdb53 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; } |