From: Andrii Nakryiko <andrii@kernel.org>
To: <bpf@vger.kernel.org>, <ast@kernel.org>, <daniel@iogearbox.net>
Cc: <andrii@kernel.org>, <kernel-team@fb.com>
Subject: [PATCH v2 bpf-next 3/3] selftests/bpf: add veristat tool for mass-verifying BPF object files
Date: Fri, 9 Sep 2022 12:30:53 -0700 [thread overview]
Message-ID: <20220909193053.577111-4-andrii@kernel.org> (raw)
In-Reply-To: <20220909193053.577111-1-andrii@kernel.org>
Add a small tool, veristat, that allows mass-verification of
a set of *libbpf-compatible* BPF ELF object files. For each such object
file, veristat will attempt to verify each BPF program *individually*.
Regardless of success or failure, it parses BPF verifier stats and
outputs them in human-readable table format. In the future we can also
add CSV and JSON output for more scriptable post-processing, if necessary.
veristat allows to specify a set of stats that should be output and
ordering between multiple objects and files (e.g., so that one can
easily order by total instructions processed, instead of default file
name, prog name, verdict, total instructions order).
This tool should be useful for validating various BPF verifier changes
or even validating different kernel versions for regressions.
Here's an example for some of the heaviest selftests/bpf BPF object
files:
$ sudo ./veristat -s insns,file,prog {pyperf,loop,test_verif_scale,strobemeta,test_cls_redirect,profiler}*.linked3.o
File Program Verdict Duration, us Total insns Total states Peak states
------------------------------------ ------------------------------------ ------- ------------ ----------- ------------ -----------
loop3.linked3.o while_true failure 350990 1000001 9663 9663
test_verif_scale3.linked3.o balancer_ingress success 115244 845499 8636 2141
test_verif_scale2.linked3.o balancer_ingress success 77688 773445 3048 788
pyperf600.linked3.o on_event success 2079872 624585 30335 30241
pyperf600_nounroll.linked3.o on_event success 353972 568128 37101 2115
strobemeta.linked3.o on_event success 455230 557149 15915 13537
test_verif_scale1.linked3.o balancer_ingress success 89880 554754 8636 2141
strobemeta_nounroll2.linked3.o on_event success 433906 501725 17087 1912
loop6.linked3.o trace_virtqueue_add_sgs success 282205 398057 8717 919
loop1.linked3.o nested_loops success 125630 361349 5504 5504
pyperf180.linked3.o on_event success 2511740 160398 11470 11446
pyperf100.linked3.o on_event success 744329 87681 6213 6191
test_cls_redirect.linked3.o cls_redirect success 54087 78925 4782 903
strobemeta_subprogs.linked3.o on_event success 57898 65420 1954 403
test_cls_redirect_subprogs.linked3.o cls_redirect success 54522 64965 4619 958
strobemeta_nounroll1.linked3.o on_event success 43313 57240 1757 382
pyperf50.linked3.o on_event success 194355 46378 3263 3241
profiler2.linked3.o tracepoint__syscalls__sys_enter_kill success 23869 43372 1423 542
pyperf_subprogs.linked3.o on_event success 29179 36358 2499 2499
profiler1.linked3.o tracepoint__syscalls__sys_enter_kill success 13052 27036 1946 936
profiler3.linked3.o tracepoint__syscalls__sys_enter_kill success 21023 26016 2186 915
profiler2.linked3.o kprobe__vfs_link success 5255 13896 303 271
profiler1.linked3.o kprobe__vfs_link success 7792 12687 1042 1041
profiler3.linked3.o kprobe__vfs_link success 7332 10601 865 865
profiler2.linked3.o kprobe_ret__do_filp_open success 3417 8900 216 199
profiler2.linked3.o kprobe__vfs_symlink success 3548 8775 203 186
pyperf_global.linked3.o on_event success 10007 7563 520 520
profiler3.linked3.o kprobe_ret__do_filp_open success 4708 6464 532 532
profiler1.linked3.o kprobe_ret__do_filp_open success 3090 6445 508 508
profiler3.linked3.o kprobe__vfs_symlink success 4477 6358 521 521
profiler1.linked3.o kprobe__vfs_symlink success 3381 6347 507 507
profiler2.linked3.o raw_tracepoint__sched_process_exec success 2464 5874 292 189
profiler3.linked3.o raw_tracepoint__sched_process_exec success 2677 4363 397 283
profiler2.linked3.o kprobe__proc_sys_write success 1800 4355 143 138
profiler1.linked3.o raw_tracepoint__sched_process_exec success 1649 4019 333 240
pyperf600_bpf_loop.linked3.o on_event success 2711 3966 306 306
profiler2.linked3.o raw_tracepoint__sched_process_exit success 1234 3138 83 66
profiler3.linked3.o kprobe__proc_sys_write success 1755 2623 223 223
profiler1.linked3.o kprobe__proc_sys_write success 1222 2456 193 193
loop2.linked3.o while_true success 608 1783 57 30
profiler3.linked3.o raw_tracepoint__sched_process_exit success 789 1680 146 146
profiler1.linked3.o raw_tracepoint__sched_process_exit success 592 1526 133 133
strobemeta_bpf_loop.linked3.o on_event success 1015 1512 106 106
loop4.linked3.o combinations success 165 524 18 17
profiler3.linked3.o raw_tracepoint__sched_process_fork success 196 299 25 25
profiler1.linked3.o raw_tracepoint__sched_process_fork success 109 265 19 19
profiler2.linked3.o raw_tracepoint__sched_process_fork success 111 265 19 19
loop5.linked3.o while_true success 47 84 9 9
------------------------------------ ------------------------------------ ------- ------------ ----------- ------------ -----------
Signed-off-by: Andrii Nakryiko <andrii@kernel.org>
---
tools/testing/selftests/bpf/.gitignore | 1 +
tools/testing/selftests/bpf/Makefile | 7 +-
tools/testing/selftests/bpf/veristat.c | 537 +++++++++++++++++++++++++
3 files changed, 544 insertions(+), 1 deletion(-)
create mode 100644 tools/testing/selftests/bpf/veristat.c
diff --git a/tools/testing/selftests/bpf/.gitignore b/tools/testing/selftests/bpf/.gitignore
index 3a8cb2404ea6..3b288562963e 100644
--- a/tools/testing/selftests/bpf/.gitignore
+++ b/tools/testing/selftests/bpf/.gitignore
@@ -39,6 +39,7 @@ test_cpp
/tools
/runqslower
/bench
+/veristat
*.ko
*.tmp
xskxceiver
diff --git a/tools/testing/selftests/bpf/Makefile b/tools/testing/selftests/bpf/Makefile
index 6cd327f1f216..1a0296bd744a 100644
--- a/tools/testing/selftests/bpf/Makefile
+++ b/tools/testing/selftests/bpf/Makefile
@@ -82,7 +82,7 @@ TEST_PROGS_EXTENDED := with_addr.sh \
TEST_GEN_PROGS_EXTENDED = test_sock_addr test_skb_cgroup_id_user \
flow_dissector_load test_flow_dissector test_tcp_check_syncookie_user \
test_lirc_mode2_user xdping test_cpp runqslower bench bpf_testmod.ko \
- xskxceiver xdp_redirect_multi xdp_synproxy
+ xskxceiver xdp_redirect_multi xdp_synproxy veristat
TEST_CUSTOM_PROGS = $(OUTPUT)/urandom_read
@@ -595,6 +595,11 @@ $(OUTPUT)/bench: $(OUTPUT)/bench.o \
$(call msg,BINARY,,$@)
$(Q)$(CC) $(CFLAGS) $(LDFLAGS) $(filter %.a %.o,$^) $(LDLIBS) -o $@
+$(OUTPUT)/veristat.o: $(BPFOBJ)
+$(OUTPUT)/veristat: $(OUTPUT)/veristat.o
+ $(call msg,BINARY,,$@)
+ $(Q)$(CC) $(CFLAGS) $(LDFLAGS) $(filter %.a %.o,$^) $(LDLIBS) -o $@
+
EXTRA_CLEAN := $(TEST_CUSTOM_PROGS) $(SCRATCH_DIR) $(HOST_SCRATCH_DIR) \
prog_tests/tests.h map_tests/tests.h verifier/tests.h \
feature bpftool \
diff --git a/tools/testing/selftests/bpf/veristat.c b/tools/testing/selftests/bpf/veristat.c
new file mode 100644
index 000000000000..ef74dd66ac08
--- /dev/null
+++ b/tools/testing/selftests/bpf/veristat.c
@@ -0,0 +1,537 @@
+// SPDX-License-Identifier: GPL-2.0
+/* Copyright (c) 2022 Meta Platforms, Inc. and affiliates. */
+#define _GNU_SOURCE
+#include <argp.h>
+#include <string.h>
+#include <stdlib.h>
+#include <linux/compiler.h>
+#include <sched.h>
+#include <pthread.h>
+#include <dirent.h>
+#include <signal.h>
+#include <fcntl.h>
+#include <unistd.h>
+#include <sys/time.h>
+#include <sys/sysinfo.h>
+#include <sys/stat.h>
+#include <bpf/libbpf.h>
+
+enum stat_id {
+ VERDICT,
+ DURATION,
+ TOTAL_INSNS,
+ TOTAL_STATES,
+ PEAK_STATES,
+ MAX_STATES_PER_INSN,
+ MARK_READ_MAX_LEN,
+
+ FILE_NAME,
+ PROG_NAME,
+
+ ALL_STATS_CNT,
+ NUM_STATS_CNT = FILE_NAME - VERDICT,
+};
+
+struct verif_stats {
+ char *file_name;
+ char *prog_name;
+
+ long stats[NUM_STATS_CNT];
+};
+
+struct stat_specs {
+ int spec_cnt;
+ enum stat_id ids[ALL_STATS_CNT];
+ bool asc[ALL_STATS_CNT];
+ int lens[ALL_STATS_CNT];
+};
+
+static struct env {
+ char **filenames;
+ int filename_cnt;
+ bool verbose;
+
+ struct verif_stats *prog_stats;
+ int prog_stat_cnt;
+
+ struct stat_specs output_spec;
+ struct stat_specs sort_spec;
+} env;
+
+static int libbpf_print_fn(enum libbpf_print_level level,
+ const char *format, va_list args)
+{
+ if (!env.verbose)
+ return 0;
+ if (level == LIBBPF_DEBUG /* && !env.verbose */)
+ return 0;
+ return vfprintf(stderr, format, args);
+}
+
+const char *argp_program_version = "veristat";
+const char *argp_program_bug_address = "<bpf@vger.kernel.org>";
+const char argp_program_doc[] =
+"veristat BPF verifier stats collection tool.\n"
+"\n"
+"USAGE: veristat <obj-file> [<obj-file>...]\n";
+
+static const struct argp_option opts[] = {
+ { NULL, 'h', NULL, OPTION_HIDDEN, "Show the full help" },
+ { "verbose", 'v', NULL, 0, "Verbose mode" },
+ { "output", 'o', "SPEC", 0, "Specify output stats" },
+ { "sort", 's', "SPEC", 0, "Specify sort order" },
+ {},
+};
+
+static int parse_stats(const char *stats_str, struct stat_specs *specs);
+
+static error_t parse_arg(int key, char *arg, struct argp_state *state)
+{
+ void *tmp;
+ int err;
+
+ switch (key) {
+ case 'h':
+ argp_state_help(state, stderr, ARGP_HELP_STD_HELP);
+ break;
+ case 'v':
+ env.verbose = true;
+ break;
+ case 'o':
+ err = parse_stats(arg, &env.output_spec);
+ if (err)
+ return err;
+ break;
+ case 's':
+ err = parse_stats(arg, &env.sort_spec);
+ if (err)
+ return err;
+ break;
+ case ARGP_KEY_ARG:
+ tmp = realloc(env.filenames, (env.filename_cnt + 1) * sizeof(*env.filenames));
+ if (!tmp)
+ return -ENOMEM;
+ env.filenames = tmp;
+ env.filenames[env.filename_cnt] = strdup(arg);
+ if (!env.filenames[env.filename_cnt])
+ return -ENOMEM;
+ env.filename_cnt++;
+ break;
+ default:
+ return ARGP_ERR_UNKNOWN;
+ }
+ return 0;
+}
+
+static const struct stat_specs default_output_spec = {
+ .spec_cnt = 7,
+ .ids = {
+ FILE_NAME, PROG_NAME, VERDICT, DURATION,
+ TOTAL_INSNS, TOTAL_STATES, PEAK_STATES,
+ },
+};
+
+static const struct stat_specs default_sort_spec = {
+ .spec_cnt = 2,
+ .ids = {
+ FILE_NAME, PROG_NAME,
+ },
+ .asc = { true, true, },
+};
+
+static struct stat_def {
+ const char *header;
+ const char *names[4];
+ bool asc_by_default;
+} stat_defs[] = {
+ [FILE_NAME] = { "File", {"file_name", "filename", "file"}, true /* asc */ },
+ [PROG_NAME] = { "Program", {"prog_name", "progname", "prog"}, true /* asc */ },
+ [VERDICT] = { "Verdict", {"verdict"}, true /* asc: failure, success */ },
+ [DURATION] = { "Duration, us", {"duration", "dur"}, },
+ [TOTAL_INSNS] = { "Total insns", {"total_insns", "insns"}, },
+ [TOTAL_STATES] = { "Total states", {"total_states", "states"}, },
+ [PEAK_STATES] = { "Peak states", {"peak_states"}, },
+ [MAX_STATES_PER_INSN] = { "Max states per insn", {"max_states_per_insn"}, },
+ [MARK_READ_MAX_LEN] = { "Max mark read length", {"max_mark_read_len", "mark_read"}, },
+};
+
+static int parse_stat(const char *stat_name, struct stat_specs *specs)
+{
+ int id, i;
+
+ if (specs->spec_cnt >= ARRAY_SIZE(specs->ids)) {
+ fprintf(stderr, "Can't specify more than %zd stats\n", ARRAY_SIZE(specs->ids));
+ return -E2BIG;
+ }
+
+ for (id = 0; id < ARRAY_SIZE(stat_defs); id++) {
+ struct stat_def *def = &stat_defs[id];
+
+ for (i = 0; i < ARRAY_SIZE(stat_defs[id].names); i++) {
+ if (!def->names[i] || strcmp(def->names[i], stat_name) != 0)
+ continue;
+
+ specs->ids[specs->spec_cnt] = id;
+ specs->asc[specs->spec_cnt] = def->asc_by_default;
+ specs->spec_cnt++;
+
+ return 0;
+ }
+ }
+
+ fprintf(stderr, "Unrecognized stat name '%s'\n", stat_name);
+ return -ESRCH;
+}
+
+static int parse_stats(const char *stats_str, struct stat_specs *specs)
+{
+ char *input, *state = NULL, *next;
+ int err;
+
+ input = strdup(stats_str);
+ if (!input)
+ return -ENOMEM;
+
+ while ((next = strtok_r(state ? NULL : input, ",", &state))) {
+ err = parse_stat(next, specs);
+ if (err)
+ return err;
+ }
+
+ return 0;
+}
+
+static char verif_log_buf[64 * 1024];
+
+static int parse_verif_log(const char *buf, size_t buf_sz, struct verif_stats *s)
+{
+ const char *next;
+ int pos;
+
+ for (pos = 0; buf[0]; buf = next) {
+ if (buf[0] == '\n')
+ buf++;
+ next = strchrnul(&buf[pos], '\n');
+
+ if (1 == sscanf(buf, "verification time %ld usec\n", &s->stats[DURATION]))
+ continue;
+ if (6 == sscanf(buf, "processed %ld insns (limit %*d) max_states_per_insn %ld total_states %ld peak_states %ld mark_read %ld",
+ &s->stats[TOTAL_INSNS],
+ &s->stats[MAX_STATES_PER_INSN],
+ &s->stats[TOTAL_STATES],
+ &s->stats[PEAK_STATES],
+ &s->stats[MARK_READ_MAX_LEN]))
+ continue;
+ }
+
+ return 0;
+}
+
+static int process_prog(const char *filename, struct bpf_object *obj, struct bpf_program *prog)
+{
+ const char *prog_name = bpf_program__name(prog);
+ size_t buf_sz = sizeof(verif_log_buf);
+ char *buf = verif_log_buf;
+ struct verif_stats *stats;
+ int err = 0;
+ void *tmp;
+
+ tmp = realloc(env.prog_stats, (env.prog_stat_cnt + 1) * sizeof(*env.prog_stats));
+ if (!tmp)
+ return -ENOMEM;
+ env.prog_stats = tmp;
+ stats = &env.prog_stats[env.prog_stat_cnt++];
+ memset(stats, 0, sizeof(*stats));
+
+ if (env.verbose) {
+ buf_sz = 16 * 1024 * 1024;
+ buf = malloc(buf_sz);
+ if (!buf)
+ return -ENOMEM;
+ bpf_program__set_log_buf(prog, buf, buf_sz);
+ bpf_program__set_log_level(prog, 1 | 4); /* stats + log */
+ } else {
+ bpf_program__set_log_buf(prog, buf, buf_sz);
+ bpf_program__set_log_level(prog, 4); /* only verifier stats */
+ }
+ verif_log_buf[0] = '\0';
+
+ err = bpf_object__load(obj);
+
+ stats->file_name = strdup(basename(filename));
+ stats->prog_name = strdup(bpf_program__name(prog));
+ stats->stats[VERDICT] = err == 0; /* 1 - success, 0 - failure */
+ parse_verif_log(buf, buf_sz, stats);
+
+ if (env.verbose) {
+ printf("PROCESSING %s/%s, DURATION US: %ld, VERDICT: %s, VERIFIER LOG:\n%s\n",
+ filename, prog_name, stats->stats[DURATION],
+ err ? "failure" : "success", buf);
+ }
+
+ if (verif_log_buf != buf)
+ free(buf);
+
+ return 0;
+};
+
+static int process_obj(const char *filename)
+{
+ struct bpf_object *obj = NULL, *tobj;
+ struct bpf_program *prog, *tprog, *lprog;
+ libbpf_print_fn_t old_libbpf_print_fn;
+ LIBBPF_OPTS(bpf_object_open_opts, opts);
+ int err = 0, prog_cnt = 0;
+
+ old_libbpf_print_fn = libbpf_set_print(libbpf_print_fn);
+
+ obj = bpf_object__open_file(filename, &opts);
+ if (!obj) {
+ err = -errno;
+ fprintf(stderr, "Failed to open '%s': %d\n", filename, err);
+ goto cleanup;
+ }
+
+ bpf_object__for_each_program(prog, obj) {
+ prog_cnt++;
+ }
+
+ if (prog_cnt == 1) {
+ prog = bpf_object__next_program(obj, NULL);
+ bpf_program__set_autoload(prog, true);
+ process_prog(filename, obj, prog);
+ bpf_object__close(obj);
+ goto cleanup;
+ }
+
+ bpf_object__for_each_program(prog, obj) {
+ const char *prog_name = bpf_program__name(prog);
+
+ tobj = bpf_object__open_file(filename, &opts);
+ if (!tobj) {
+ err = -errno;
+ fprintf(stderr, "Failed to open '%s': %d\n", filename, err);
+ goto cleanup;
+ }
+
+ bpf_object__for_each_program(tprog, tobj) {
+ const char *tprog_name = bpf_program__name(tprog);
+
+ if (strcmp(prog_name, tprog_name) == 0) {
+ bpf_program__set_autoload(tprog, true);
+ lprog = tprog;
+ } else {
+ bpf_program__set_autoload(tprog, false);
+ }
+ }
+
+ process_prog(filename, tobj, lprog);
+ bpf_object__close(tobj);
+ }
+
+cleanup:
+ bpf_object__close(obj);
+ libbpf_set_print(old_libbpf_print_fn);
+ return err;
+}
+
+static int cmp_stat(const struct verif_stats *s1, const struct verif_stats *s2,
+ enum stat_id id, bool asc)
+{
+ int cmp = 0;
+
+ switch (id) {
+ case FILE_NAME:
+ cmp = strcmp(s1->file_name, s2->file_name);
+ break;
+ case PROG_NAME:
+ cmp = strcmp(s1->prog_name, s2->prog_name);
+ break;
+ case VERDICT:
+ case DURATION:
+ case TOTAL_INSNS:
+ case TOTAL_STATES:
+ case PEAK_STATES:
+ case MAX_STATES_PER_INSN:
+ case MARK_READ_MAX_LEN: {
+ long v1 = s1->stats[id];
+ long v2 = s2->stats[id];
+
+ if (v1 != v2)
+ cmp = v1 < v2 ? -1 : 1;
+ break;
+ }
+ default:
+ fprintf(stderr, "Unrecognized stat #%d\n", id);
+ exit(1);
+ }
+
+ return asc ? cmp : -cmp;
+}
+
+static int cmp_prog_stats(const void *v1, const void *v2)
+{
+ const struct verif_stats *s1 = v1, *s2 = v2;
+ int i, cmp;
+
+ for (i = 0; i < env.sort_spec.spec_cnt; i++) {
+ cmp = cmp_stat(s1, s2, env.sort_spec.ids[i], env.sort_spec.asc[i]);
+ if (cmp != 0)
+ return cmp;
+ }
+
+ return 0;
+}
+
+#define HEADER_CHAR '-'
+#define COLUMN_SEP " "
+
+static void output_headers(bool calc_len)
+{
+ int i, len;
+
+ for (i = 0; i < env.output_spec.spec_cnt; i++) {
+ int id = env.output_spec.ids[i];
+ int *max_len = &env.output_spec.lens[i];
+
+ if (calc_len) {
+ len = snprintf(NULL, 0, "%s", stat_defs[id].header);
+ if (len > *max_len)
+ *max_len = len;
+ } else {
+ printf("%s%-*s", i == 0 ? "" : COLUMN_SEP, *max_len, stat_defs[id].header);
+ }
+ }
+
+ if (!calc_len)
+ printf("\n");
+}
+
+static void output_header_underlines(void)
+{
+ int i, j, len;
+
+ for (i = 0; i < env.output_spec.spec_cnt; i++) {
+ len = env.output_spec.lens[i];
+
+ printf("%s", i == 0 ? "" : COLUMN_SEP);
+ for (j = 0; j < len; j++)
+ printf("%c", HEADER_CHAR);
+ }
+ printf("\n");
+}
+
+static void output_stats(const struct verif_stats *s, bool calc_len)
+{
+ int i;
+
+ for (i = 0; i < env.output_spec.spec_cnt; i++) {
+ int id = env.output_spec.ids[i];
+ int *max_len = &env.output_spec.lens[i], len;
+ const char *str = NULL;
+ long val = 0;
+
+ switch (id) {
+ case FILE_NAME:
+ str = s->file_name;
+ break;
+ case PROG_NAME:
+ str = s->prog_name;
+ break;
+ case VERDICT:
+ str = s->stats[VERDICT] ? "success" : "failure";
+ break;
+ case DURATION:
+ case TOTAL_INSNS:
+ case TOTAL_STATES:
+ case PEAK_STATES:
+ case MAX_STATES_PER_INSN:
+ case MARK_READ_MAX_LEN:
+ val = s->stats[id];
+ break;
+ default:
+ fprintf(stderr, "Unrecognized stat #%d\n", id);
+ exit(1);
+ }
+
+ if (calc_len) {
+ if (str)
+ len = snprintf(NULL, 0, "%s", str);
+ else
+ len = snprintf(NULL, 0, "%ld", val);
+ if (len > *max_len)
+ *max_len = len;
+ } else {
+ if (str)
+ printf("%s%-*s", i == 0 ? "" : COLUMN_SEP, *max_len, str);
+ else
+ printf("%s%*ld", i == 0 ? "" : COLUMN_SEP, *max_len, val);
+ }
+ }
+
+ if (!calc_len)
+ printf("\n");
+}
+
+int main(int argc, char **argv)
+{
+ static const struct argp argp = {
+ .options = opts,
+ .parser = parse_arg,
+ .doc = argp_program_doc,
+ };
+ int err = 0, i;
+
+ if (argp_parse(&argp, argc, argv, 0, NULL, NULL))
+ return 1;
+
+ if (env.filename_cnt == 0) {
+ fprintf(stderr, "Please provide path to BPF object file!\n");
+ argp_help(&argp, stderr, ARGP_HELP_USAGE, "veristat");
+ return 1;
+ }
+
+ if (env.output_spec.spec_cnt == 0)
+ env.output_spec = default_output_spec;
+ if (env.sort_spec.spec_cnt == 0)
+ env.sort_spec = default_sort_spec;
+
+ for (i = 0; i < env.filename_cnt; i++) {
+ err = process_obj(env.filenames[i]);
+ if (err) {
+ fprintf(stderr, "Failed to process '%s': %d\n", env.filenames[i], err);
+ goto cleanup;
+ }
+ }
+
+ qsort(env.prog_stats, env.prog_stat_cnt, sizeof(*env.prog_stats), cmp_prog_stats);
+
+ /* calculate column widths */
+ output_headers(true);
+ for (i = 0; i < env.prog_stat_cnt; i++) {
+ output_stats(&env.prog_stats[i], true);
+ }
+
+ /* actually output the table */
+ output_headers(false);
+ output_header_underlines();
+ for (i = 0; i < env.prog_stat_cnt; i++) {
+ output_stats(&env.prog_stats[i], false);
+ }
+ output_header_underlines();
+ printf("\n");
+
+ printf("Done. Processed %d object files, %d programs.\n",
+ env.filename_cnt, env.prog_stat_cnt);
+
+cleanup:
+ for (i = 0; i < env.prog_stat_cnt; i++) {
+ free(env.prog_stats[i].file_name);
+ free(env.prog_stats[i].prog_name);
+ }
+ free(env.prog_stats);
+ for (i = 0; i < env.filename_cnt; i++)
+ free(env.filenames[i]);
+ free(env.filenames);
+ return -err;
+}
--
2.30.2
next prev parent reply other threads:[~2022-09-09 19:31 UTC|newest]
Thread overview: 5+ messages / expand[flat|nested] mbox.gz Atom feed top
2022-09-09 19:30 [PATCH v2 bpf-next 0/3] BPF mass-verification veristat tool Andrii Nakryiko
2022-09-09 19:30 ` [PATCH v2 bpf-next 1/3] selftests/bpf: fix test_verif_scale{1,3} SEC() annotations Andrii Nakryiko
2022-09-09 19:30 ` [PATCH v2 bpf-next 2/3] libbpf: fix crash if SEC("freplace") programs don't have attach_prog_fd set Andrii Nakryiko
2022-09-09 19:30 ` Andrii Nakryiko [this message]
2022-09-16 20:50 ` [PATCH v2 bpf-next 3/3] selftests/bpf: add veristat tool for mass-verifying BPF object files Daniel Borkmann
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