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Tue, 28 Apr 2020 17:29:47 -0700 Received: from intmgw003.08.frc2.facebook.com (2620:10d:c0a8:1b::d) by mail.thefacebook.com (2620:10d:c0a8:82::c) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256) id 15.1.1847.3; Tue, 28 Apr 2020 17:29:45 -0700 Received: by devbig006.ftw2.facebook.com (Postfix, from userid 4523) id B6FE562E4BF9; Tue, 28 Apr 2020 17:29:40 -0700 (PDT) Smtp-Origin-Hostprefix: devbig From: Song Liu Smtp-Origin-Hostname: devbig006.ftw2.facebook.com To: , CC: , , , Song Liu Smtp-Origin-Cluster: ftw2c04 Subject: [PATCH v6 bpf-next 3/3] bpf: add selftest for BPF_ENABLE_STATS Date: Tue, 28 Apr 2020 17:29:22 -0700 Message-ID: <20200429002922.3064669-4-songliubraving@fb.com> X-Mailer: git-send-email 2.24.1 In-Reply-To: <20200429002922.3064669-1-songliubraving@fb.com> References: <20200429002922.3064669-1-songliubraving@fb.com> MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable X-FB-Internal: Safe Content-Type: text/plain X-Proofpoint-Virus-Version: vendor=fsecure engine=2.50.10434:6.0.138,18.0.676 definitions=2020-04-28_15:2020-04-28,2020-04-28 signatures=0 X-Proofpoint-Spam-Details: rule=fb_default_notspam policy=fb_default score=0 phishscore=0 priorityscore=1501 suspectscore=8 spamscore=0 impostorscore=0 mlxlogscore=999 bulkscore=0 mlxscore=0 adultscore=0 malwarescore=0 clxscore=1015 lowpriorityscore=0 classifier=spam adjust=0 reason=mlx scancount=1 engine=8.12.0-2003020000 definitions=main-2004290000 X-FB-Internal: deliver Sender: netdev-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: netdev@vger.kernel.org Add test for BPF_ENABLE_STATS, which should enable run_time_ns stats. ~/selftests/bpf# ./test_progs -t enable_stats -v test_enable_stats:PASS:skel_open_and_load 0 nsec test_enable_stats:PASS:get_stats_fd 0 nsec test_enable_stats:PASS:attach_raw_tp 0 nsec test_enable_stats:PASS:get_prog_info 0 nsec test_enable_stats:PASS:check_stats_enabled 0 nsec Summary: 1/0 PASSED, 0 SKIPPED, 0 FAILED Signed-off-by: Song Liu --- .../selftests/bpf/prog_tests/enable_stats.c | 45 +++++++++++++++++++ .../selftests/bpf/progs/test_enable_stats.c | 21 +++++++++ 2 files changed, 66 insertions(+) create mode 100644 tools/testing/selftests/bpf/prog_tests/enable_stats.c create mode 100644 tools/testing/selftests/bpf/progs/test_enable_stats.c diff --git a/tools/testing/selftests/bpf/prog_tests/enable_stats.c b/tool= s/testing/selftests/bpf/prog_tests/enable_stats.c new file mode 100644 index 000000000000..987fc743ab75 --- /dev/null +++ b/tools/testing/selftests/bpf/prog_tests/enable_stats.c @@ -0,0 +1,45 @@ +// SPDX-License-Identifier: GPL-2.0 +#include +#include +#include "test_enable_stats.skel.h" + +void test_enable_stats(void) +{ + struct test_enable_stats *skel; + struct bpf_prog_info info =3D {}; + __u32 info_len =3D sizeof(info); + int stats_fd, err, prog_fd; + int duration =3D 0; + + skel =3D test_enable_stats__open_and_load(); + + if (CHECK(!skel, "skel_open_and_load", "skeleton open/load failed\n")) + return; + + stats_fd =3D bpf_enable_stats(BPF_STATS_RUNTIME_CNT); + + if (CHECK(stats_fd < 0, "get_stats_fd", "failed %d\n", errno)) + goto cleanup; + + err =3D test_enable_stats__attach(skel); + + if (CHECK(err, "attach_raw_tp", "err %d\n", err)) + goto cleanup; + + usleep(1000); + + prog_fd =3D bpf_program__fd(skel->progs.test_enable_stats); + err =3D bpf_obj_get_info_by_fd(prog_fd, &info, &info_len); + + if (CHECK(err, "get_prog_info", + "failed to get bpf_prog_info for fd %d\n", prog_fd)) + goto cleanup; + + CHECK(info.run_time_ns =3D=3D 0, "check_stats_enabled", + "failed to enable run_time_ns stats\n"); + +cleanup: + test_enable_stats__destroy(skel); + if (stats_fd >=3D 0) + close(stats_fd); +} diff --git a/tools/testing/selftests/bpf/progs/test_enable_stats.c b/tool= s/testing/selftests/bpf/progs/test_enable_stats.c new file mode 100644 index 000000000000..aa9626330a9e --- /dev/null +++ b/tools/testing/selftests/bpf/progs/test_enable_stats.c @@ -0,0 +1,21 @@ +// SPDX-License-Identifier: GPL-2.0 +// Copyright (c) 2020 Facebook + +#include +#include +#include + +char _license[] SEC("license") =3D "GPL"; + +static int val =3D 1; + +SEC("raw_tracepoint/sys_enter") +int test_enable_stats(void *ctx) +{ + __u32 key =3D 0; + __u64 *val; + + val +=3D 1; + + return 0; +} --=20 2.24.1