bpf.vger.kernel.org archive mirror
 help / color / mirror / Atom feed
From: Alexei Starovoitov <alexei.starovoitov@gmail.com>
To: davem@davemloft.net
Cc: daniel@iogearbox.net, bpf@vger.kernel.org, kernel-team@fb.com
Subject: [PATCH v4 bpf-next 7/9] selftests/bpf: Improve recursion selftest
Date: Tue,  9 Feb 2021 19:36:32 -0800	[thread overview]
Message-ID: <20210210033634.62081-8-alexei.starovoitov@gmail.com> (raw)
In-Reply-To: <20210210033634.62081-1-alexei.starovoitov@gmail.com>

From: Alexei Starovoitov <ast@kernel.org>

Since recursion_misses counter is available in bpf_prog_info
improve the selftest to make sure it's counting correctly.

Signed-off-by: Alexei Starovoitov <ast@kernel.org>
---
 tools/testing/selftests/bpf/prog_tests/recursion.c | 8 ++++++++
 1 file changed, 8 insertions(+)

diff --git a/tools/testing/selftests/bpf/prog_tests/recursion.c b/tools/testing/selftests/bpf/prog_tests/recursion.c
index 863757461e3f..0e378d63fe18 100644
--- a/tools/testing/selftests/bpf/prog_tests/recursion.c
+++ b/tools/testing/selftests/bpf/prog_tests/recursion.c
@@ -5,6 +5,8 @@
 
 void test_recursion(void)
 {
+	struct bpf_prog_info prog_info = {};
+	__u32 prog_info_len = sizeof(prog_info);
 	struct recursion *skel;
 	int key = 0;
 	int err;
@@ -28,6 +30,12 @@ void test_recursion(void)
 	ASSERT_EQ(skel->bss->pass2, 1, "pass2 == 1");
 	bpf_map_lookup_elem(bpf_map__fd(skel->maps.hash2), &key, 0);
 	ASSERT_EQ(skel->bss->pass2, 2, "pass2 == 2");
+
+	err = bpf_obj_get_info_by_fd(bpf_program__fd(skel->progs.on_lookup),
+				     &prog_info, &prog_info_len);
+	if (!ASSERT_OK(err, "get_prog_info"))
+		goto out;
+	ASSERT_EQ(prog_info.recursion_misses, 2, "recursion_misses");
 out:
 	recursion__destroy(skel);
 }
-- 
2.24.1


  parent reply	other threads:[~2021-02-10  3:38 UTC|newest]

Thread overview: 14+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2021-02-10  3:36 [PATCH v4 bpf-next 0/9] bpf: Misc improvements Alexei Starovoitov
2021-02-10  3:36 ` [PATCH v4 bpf-next 1/9] bpf: Optimize program stats Alexei Starovoitov
2021-02-12  3:26   ` Ilya Leoshkevich
2021-02-12  3:43     ` Alexei Starovoitov
2021-02-12  3:51       ` Ilya Leoshkevich
2021-02-10  3:36 ` [PATCH v4 bpf-next 2/9] bpf: Run sleepable programs with migration disabled Alexei Starovoitov
2021-02-10  3:36 ` [PATCH v4 bpf-next 3/9] bpf: Compute program stats for sleepable programs Alexei Starovoitov
2021-02-10  3:36 ` [PATCH v4 bpf-next 4/9] bpf: Add per-program recursion prevention mechanism Alexei Starovoitov
2021-02-10  3:36 ` [PATCH v4 bpf-next 5/9] selftest/bpf: Add a recursion test Alexei Starovoitov
2021-02-10  3:36 ` [PATCH v4 bpf-next 6/9] bpf: Count the number of times recursion was prevented Alexei Starovoitov
2021-02-10  3:36 ` Alexei Starovoitov [this message]
2021-02-10  3:36 ` [PATCH v4 bpf-next 8/9] bpf: Allows per-cpu maps and map-in-map in sleepable programs Alexei Starovoitov
2021-02-10  3:36 ` [PATCH v4 bpf-next 9/9] selftests/bpf: Add a test for map-in-map and per-cpu maps in sleepable progs Alexei Starovoitov
2021-02-11 15:30 ` [PATCH v4 bpf-next 0/9] bpf: Misc improvements patchwork-bot+netdevbpf

Reply instructions:

You may reply publicly to this message via plain-text email
using any one of the following methods:

* Save the following mbox file, import it into your mail client,
  and reply-to-all from there: mbox

  Avoid top-posting and favor interleaved quoting:
  https://en.wikipedia.org/wiki/Posting_style#Interleaved_style

* Reply using the --to, --cc, and --in-reply-to
  switches of git-send-email(1):

  git send-email \
    --in-reply-to=20210210033634.62081-8-alexei.starovoitov@gmail.com \
    --to=alexei.starovoitov@gmail.com \
    --cc=bpf@vger.kernel.org \
    --cc=daniel@iogearbox.net \
    --cc=davem@davemloft.net \
    --cc=kernel-team@fb.com \
    --subject='Re: [PATCH v4 bpf-next 7/9] selftests/bpf: Improve recursion selftest' \
    /path/to/YOUR_REPLY

  https://kernel.org/pub/software/scm/git/docs/git-send-email.html

* If your mail client supports setting the In-Reply-To header
  via mailto: links, try the mailto: link

This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox;
as well as URLs for NNTP newsgroup(s).