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Date: Sat, 27 Jul 2019 20:25:27 -0700
From: Andrii Nakryiko <andriin@...com>
To: <bpf@...r.kernel.org>, <netdev@...r.kernel.org>, <ast@...com>,
<daniel@...earbox.net>, <sdf@...ichev.me>
CC: <andrii.nakryiko@...il.com>, <kernel-team@...com>,
Andrii Nakryiko <andriin@...com>
Subject: [PATCH v3 bpf-next 5/9] selftest/bpf: centralize libbpf logging management for test_progs
Make test_progs test runner own libbpf logging. Also introduce two
levels of verbosity: -v and -vv. First one will be used in subsequent
patches to enable test log output always. Second one increases verbosity
level of libbpf logging further to include debug output as well.
Signed-off-by: Andrii Nakryiko <andriin@...com>
---
.../bpf/prog_tests/bpf_verif_scale.c | 6 +++-
.../bpf/prog_tests/reference_tracking.c | 15 +++-------
tools/testing/selftests/bpf/test_progs.c | 29 +++++++++++++++++++
3 files changed, 38 insertions(+), 12 deletions(-)
diff --git a/tools/testing/selftests/bpf/prog_tests/bpf_verif_scale.c b/tools/testing/selftests/bpf/prog_tests/bpf_verif_scale.c
index e1b55261526f..ceddb8cc86f4 100644
--- a/tools/testing/selftests/bpf/prog_tests/bpf_verif_scale.c
+++ b/tools/testing/selftests/bpf/prog_tests/bpf_verif_scale.c
@@ -70,10 +70,11 @@ void test_bpf_verif_scale(void)
const char *cg_sysctl[] = {
"./test_sysctl_loop1.o", "./test_sysctl_loop2.o",
};
+ libbpf_print_fn_t old_print_fn = NULL;
int err, i;
if (verifier_stats)
- libbpf_set_print(libbpf_debug_print);
+ old_print_fn = libbpf_set_print(libbpf_debug_print);
err = check_load("./loop3.o", BPF_PROG_TYPE_RAW_TRACEPOINT);
printf("test_scale:loop3:%s\n", err ? (error_cnt--, "OK") : "FAIL");
@@ -97,4 +98,7 @@ void test_bpf_verif_scale(void)
err = check_load("./test_seg6_loop.o", BPF_PROG_TYPE_LWT_SEG6LOCAL);
printf("test_scale:test_seg6_loop:%s\n", err ? "FAIL" : "OK");
+
+ if (verifier_stats)
+ libbpf_set_print(old_print_fn);
}
diff --git a/tools/testing/selftests/bpf/prog_tests/reference_tracking.c b/tools/testing/selftests/bpf/prog_tests/reference_tracking.c
index 5633be43828f..4a4f428d1a78 100644
--- a/tools/testing/selftests/bpf/prog_tests/reference_tracking.c
+++ b/tools/testing/selftests/bpf/prog_tests/reference_tracking.c
@@ -1,15 +1,6 @@
// SPDX-License-Identifier: GPL-2.0
#include <test_progs.h>
-static int libbpf_debug_print(enum libbpf_print_level level,
- const char *format, va_list args)
-{
- if (level == LIBBPF_DEBUG)
- return 0;
-
- return vfprintf(stderr, format, args);
-}
-
void test_reference_tracking(void)
{
const char *file = "./test_sk_lookup_kern.o";
@@ -36,9 +27,11 @@ void test_reference_tracking(void)
/* Expect verifier failure if test name has 'fail' */
if (strstr(title, "fail") != NULL) {
- libbpf_set_print(NULL);
+ libbpf_print_fn_t old_print_fn;
+
+ old_print_fn = libbpf_set_print(NULL);
err = !bpf_program__load(prog, "GPL", 0);
- libbpf_set_print(libbpf_debug_print);
+ libbpf_set_print(old_print_fn);
} else {
err = bpf_program__load(prog, "GPL", 0);
}
diff --git a/tools/testing/selftests/bpf/test_progs.c b/tools/testing/selftests/bpf/test_progs.c
index 6e04b9f83777..94b6951b90b3 100644
--- a/tools/testing/selftests/bpf/test_progs.c
+++ b/tools/testing/selftests/bpf/test_progs.c
@@ -186,6 +186,8 @@ enum ARG_KEYS {
ARG_TEST_NUM = 'n',
ARG_TEST_NAME = 't',
ARG_VERIFIER_STATS = 's',
+
+ ARG_VERBOSE = 'v',
};
static const struct argp_option opts[] = {
@@ -195,6 +197,8 @@ static const struct argp_option opts[] = {
"Run tests with names containing NAME" },
{ "verifier-stats", ARG_VERIFIER_STATS, NULL, 0,
"Output verifier statistics", },
+ { "verbose", ARG_VERBOSE, "LEVEL", OPTION_ARG_OPTIONAL,
+ "Verbose output (use -vv for extra verbose output)" },
{},
};
@@ -202,12 +206,22 @@ struct test_env {
int test_num_selector;
const char *test_name_selector;
bool verifier_stats;
+ bool verbose;
+ bool very_verbose;
};
static struct test_env env = {
.test_num_selector = -1,
};
+static int libbpf_print_fn(enum libbpf_print_level level,
+ const char *format, va_list args)
+{
+ if (!env.very_verbose && level == LIBBPF_DEBUG)
+ return 0;
+ return vfprintf(stderr, format, args);
+}
+
static error_t parse_arg(int key, char *arg, struct argp_state *state)
{
struct test_env *env = state->input;
@@ -229,6 +243,19 @@ static error_t parse_arg(int key, char *arg, struct argp_state *state)
case ARG_VERIFIER_STATS:
env->verifier_stats = true;
break;
+ case ARG_VERBOSE:
+ if (arg) {
+ if (strcmp(arg, "v") == 0) {
+ env->very_verbose = true;
+ } else {
+ fprintf(stderr,
+ "Unrecognized verbosity setting ('%s'), only -v and -vv are supported\n",
+ arg);
+ return -EINVAL;
+ }
+ }
+ env->verbose = true;
+ break;
case ARGP_KEY_ARG:
argp_usage(state);
break;
@@ -255,6 +282,8 @@ int main(int argc, char **argv)
if (err)
return err;
+ libbpf_set_print(libbpf_print_fn);
+
srand(time(NULL));
jit_enabled = is_jit_enabled();
--
2.17.1
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