Merge branch 'master' of git://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux-2.6

[uclinux-h8/linux.git] / samples / bpf / spintest_user.c

diff --git a/samples/bpf/spintest_user.c b/samples/bpf/spintest_user.c
new file mode 100644 (file)
index 0000000..311ede5
--- /dev/null
+++ b/samples/bpf/spintest_user.c
@@ -0,0 +1,50 @@
+#include <stdio.h>
+#include <unistd.h>
+#include <linux/bpf.h>
+#include <string.h>
+#include <assert.h>
+#include <sys/resource.h>
+#include "libbpf.h"
+#include "bpf_load.h"
+
+int main(int ac, char **argv)
+{
+       struct rlimit r = {RLIM_INFINITY, RLIM_INFINITY};
+       long key, next_key, value;
+       char filename[256];
+       struct ksym *sym;
+       int i;
+
+       snprintf(filename, sizeof(filename), "%s_kern.o", argv[0]);
+       setrlimit(RLIMIT_MEMLOCK, &r);
+
+       if (load_kallsyms()) {
+               printf("failed to process /proc/kallsyms\n");
+               return 2;
+       }
+
+       if (load_bpf_file(filename)) {
+               printf("%s", bpf_log_buf);
+               return 1;
+       }
+
+       for (i = 0; i < 5; i++) {
+               key = 0;
+               printf("kprobing funcs:");
+               while (bpf_get_next_key(map_fd[0], &key, &next_key) == 0) {
+                       bpf_lookup_elem(map_fd[0], &next_key, &value);
+                       assert(next_key == value);
+                       sym = ksym_search(value);
+                       printf(" %s", sym->name);
+                       key = next_key;
+               }
+               if (key)
+                       printf("\n");
+               key = 0;
+               while (bpf_get_next_key(map_fd[0], &key, &next_key) == 0)
+                       bpf_delete_elem(map_fd[0], &next_key);
+               sleep(1);
+       }
+
+       return 0;
+}