commit 28dbf861deacb0321604bf1c5e1ccc34dd215669
author Yonghong Song <yhs@fb.com> Sat Apr 28 22:28:13 2018 -0700
committer Alexei Starovoitov <ast@kernel.org> Sun Apr 29 08:45:54 2018 -0700
tree ae98045b9d24ea60e1034b08200d74e762dde8bb
parent de2ff05f48afcde816ff4edb217417f62f624ab5

samples/bpf: move common-purpose trace functions to selftests

There is no functionality change in this patch. The common-purpose
trace functions, including perf_event polling and ksym lookup,
are moved from trace_output_user.c and bpf_load.c to
selftests/bpf/trace_helpers.c so that these function can
be reused later in selftests.

Acked-by: Alexei Starovoitov <ast@fb.com>
Signed-off-by: Yonghong Song <yhs@fb.com>
Signed-off-by: Alexei Starovoitov <ast@kernel.org>

samples/bpf/trace_event_user.c

diff --git a/samples/bpf/trace_event_user.c b/samples/bpf/trace_event_user.c
index 56f7a25..1fa1bec 100644
--- a/samples/bpf/trace_event_user.c
+++ b/samples/bpf/trace_event_user.c
@@ -21,6 +21,7 @@
 #include "libbpf.h"
 #include "bpf_load.h"
 #include "perf-sys.h"
+#include "trace_helpers.h"
 
 #define SAMPLE_FREQ 50