ASR_BASE
Change-Id: Icf3719cc0afe3eeb3edc7fa80a2eb5199ca9dda1
diff --git a/marvell/linux/samples/bpf/trace_output_user.c b/marvell/linux/samples/bpf/trace_output_user.c
new file mode 100644
index 0000000..8ee4769
--- /dev/null
+++ b/marvell/linux/samples/bpf/trace_output_user.c
@@ -0,0 +1,88 @@
+// SPDX-License-Identifier: GPL-2.0-only
+#include <stdio.h>
+#include <unistd.h>
+#include <stdlib.h>
+#include <stdbool.h>
+#include <string.h>
+#include <fcntl.h>
+#include <poll.h>
+#include <linux/perf_event.h>
+#include <linux/bpf.h>
+#include <errno.h>
+#include <assert.h>
+#include <sys/syscall.h>
+#include <sys/ioctl.h>
+#include <sys/mman.h>
+#include <time.h>
+#include <signal.h>
+#include <libbpf.h>
+#include "bpf_load.h"
+#include "perf-sys.h"
+
+static __u64 time_get_ns(void)
+{
+ struct timespec ts;
+
+ clock_gettime(CLOCK_MONOTONIC, &ts);
+ return ts.tv_sec * 1000000000ull + ts.tv_nsec;
+}
+
+static __u64 start_time;
+static __u64 cnt;
+
+#define MAX_CNT 100000ll
+
+static void print_bpf_output(void *ctx, int cpu, void *data, __u32 size)
+{
+ struct {
+ __u64 pid;
+ __u64 cookie;
+ } *e = data;
+
+ if (e->cookie != 0x12345678) {
+ printf("BUG pid %llx cookie %llx sized %d\n",
+ e->pid, e->cookie, size);
+ return;
+ }
+
+ cnt++;
+
+ if (cnt == MAX_CNT) {
+ printf("recv %lld events per sec\n",
+ MAX_CNT * 1000000000ll / (time_get_ns() - start_time));
+ return;
+ }
+}
+
+int main(int argc, char **argv)
+{
+ struct perf_buffer_opts pb_opts = {};
+ struct perf_buffer *pb;
+ char filename[256];
+ FILE *f;
+ int ret;
+
+ snprintf(filename, sizeof(filename), "%s_kern.o", argv[0]);
+
+ if (load_bpf_file(filename)) {
+ printf("%s", bpf_log_buf);
+ return 1;
+ }
+
+ pb_opts.sample_cb = print_bpf_output;
+ pb = perf_buffer__new(map_fd[0], 8, &pb_opts);
+ ret = libbpf_get_error(pb);
+ if (ret) {
+ printf("failed to setup perf_buffer: %d\n", ret);
+ return 1;
+ }
+
+ f = popen("taskset 1 dd if=/dev/zero of=/dev/null", "r");
+ (void) f;
+
+ start_time = time_get_ns();
+ while ((ret = perf_buffer__poll(pb, 1000)) >= 0 && cnt < MAX_CNT) {
+ }
+ kill(0, SIGINT);
+ return ret;
+}