From mboxrd@z Thu Jan 1 00:00:00 1970 From: Arnaldo Carvalho de Melo Subject: [PATCH 01/27] perf test bpf: Improve message about expected samples Date: Wed, 10 Jan 2018 18:28:18 -0300 Message-ID: <20180110212844.12441-2-acme@kernel.org> References: <20180110212844.12441-1-acme@kernel.org> Return-path: Received: from mail.kernel.org ([198.145.29.99]:59018 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1752724AbeAJV3A (ORCPT ); Wed, 10 Jan 2018 16:29:00 -0500 In-Reply-To: <20180110212844.12441-1-acme@kernel.org> Sender: linux-perf-users-owner@vger.kernel.org List-ID: To: Ingo Molnar Cc: linux-kernel@vger.kernel.org, linux-perf-users@vger.kernel.org, Arnaldo Carvalho de Melo , Adrian Hunter , David Ahern , Jiri Olsa , Namhyung Kim , Wang Nan From: Arnaldo Carvalho de Melo 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 Cc: David Ahern Cc: Jiri Olsa Cc: Namhyung Kim Cc: Wang Nan Link: https://lkml.kernel.org/n/tip-403npu7daupv6b2bmxliv5pk@git.kernel.org Signed-off-by: Arnaldo Carvalho de Melo --- 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 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; } -- 2.14.3