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Diffstat (limited to 'samples/bpf/test_overhead_user.c')
-rw-r--r--samples/bpf/test_overhead_user.c82
1 files changed, 59 insertions, 23 deletions
diff --git a/samples/bpf/test_overhead_user.c b/samples/bpf/test_overhead_user.c
index 94f74112a20e..819a6fe86f89 100644
--- a/samples/bpf/test_overhead_user.c
+++ b/samples/bpf/test_overhead_user.c
@@ -18,10 +18,14 @@
#include <time.h>
#include <sys/resource.h>
#include <bpf/bpf.h>
-#include "bpf_load.h"
+#include <bpf/libbpf.h>
#define MAX_CNT 1000000
+static struct bpf_link *links[2];
+static struct bpf_object *obj;
+static int cnt;
+
static __u64 time_get_ns(void)
{
struct timespec ts;
@@ -115,20 +119,54 @@ static void run_perf_test(int tasks, int flags)
}
}
+static int load_progs(char *filename)
+{
+ struct bpf_program *prog;
+ int err = 0;
+
+ obj = bpf_object__open_file(filename, NULL);
+ err = libbpf_get_error(obj);
+ if (err < 0) {
+ fprintf(stderr, "ERROR: opening BPF object file failed\n");
+ return err;
+ }
+
+ /* load BPF program */
+ err = bpf_object__load(obj);
+ if (err < 0) {
+ fprintf(stderr, "ERROR: loading BPF object file failed\n");
+ return err;
+ }
+
+ bpf_object__for_each_program(prog, obj) {
+ links[cnt] = bpf_program__attach(prog);
+ err = libbpf_get_error(links[cnt]);
+ if (err < 0) {
+ fprintf(stderr, "ERROR: bpf_program__attach failed\n");
+ links[cnt] = NULL;
+ return err;
+ }
+ cnt++;
+ }
+
+ return err;
+}
+
static void unload_progs(void)
{
- close(prog_fd[0]);
- close(prog_fd[1]);
- close(event_fd[0]);
- close(event_fd[1]);
+ while (cnt)
+ bpf_link__destroy(links[--cnt]);
+
+ bpf_object__close(obj);
}
int main(int argc, char **argv)
{
struct rlimit r = {RLIM_INFINITY, RLIM_INFINITY};
- char filename[256];
- int num_cpu = 8;
+ int num_cpu = sysconf(_SC_NPROCESSORS_ONLN);
int test_flags = ~0;
+ char filename[256];
+ int err = 0;
setrlimit(RLIMIT_MEMLOCK, &r);
@@ -145,38 +183,36 @@ int main(int argc, char **argv)
if (test_flags & 0xC) {
snprintf(filename, sizeof(filename),
"%s_kprobe_kern.o", argv[0]);
- if (load_bpf_file(filename)) {
- printf("%s", bpf_log_buf);
- return 1;
- }
+
printf("w/KPROBE\n");
- run_perf_test(num_cpu, test_flags >> 2);
+ err = load_progs(filename);
+ if (!err)
+ run_perf_test(num_cpu, test_flags >> 2);
+
unload_progs();
}
if (test_flags & 0x30) {
snprintf(filename, sizeof(filename),
"%s_tp_kern.o", argv[0]);
- if (load_bpf_file(filename)) {
- printf("%s", bpf_log_buf);
- return 1;
- }
printf("w/TRACEPOINT\n");
- run_perf_test(num_cpu, test_flags >> 4);
+ err = load_progs(filename);
+ if (!err)
+ run_perf_test(num_cpu, test_flags >> 4);
+
unload_progs();
}
if (test_flags & 0xC0) {
snprintf(filename, sizeof(filename),
"%s_raw_tp_kern.o", argv[0]);
- if (load_bpf_file(filename)) {
- printf("%s", bpf_log_buf);
- return 1;
- }
printf("w/RAW_TRACEPOINT\n");
- run_perf_test(num_cpu, test_flags >> 6);
+ err = load_progs(filename);
+ if (!err)
+ run_perf_test(num_cpu, test_flags >> 6);
+
unload_progs();
}
- return 0;
+ return err;
}