[PATCH bpf-next] uprobe: gate bpf call behind BPF_EVENTS

[Delyan Kratunov <delyank@fb.com>]

The call into bpf from uprobes needs to be gated now that it doesn't use
the trace_events.h helpers.

Randy found this as a randconfig build failure on linux-next [1].

  [1]: https://lore.kernel.org/linux-next/2de99180-7d55-2fdf-134d-33198c27cc58@infradead.org/

Reported-by: Randy Dunlap <rdunlap@infradead.org>
Signed-off-by: Delyan Kratunov <delyank@fb.com>
---
 kernel/trace/trace_uprobe.c | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/kernel/trace/trace_uprobe.c b/kernel/trace/trace_uprobe.c
index 0282c119b1b2..326235fd2346 100644
--- a/kernel/trace/trace_uprobe.c
+++ b/kernel/trace/trace_uprobe.c
@@ -1344,6 +1344,7 @@ static void __uprobe_perf_func(struct trace_uprobe *tu,
 	int size, esize;
 	int rctx;

+#ifdef CONFIG_BPF_EVENTS
 	if (bpf_prog_array_valid(call)) {
 		u32 ret;

@@ -1351,6 +1352,7 @@ static void __uprobe_perf_func(struct trace_uprobe *tu,
 		if (!ret)
 			return;
 	}
+#endif /* CONFIG_BPF_EVENTS */

 	esize = SIZEOF_TRACE_ENTRY(is_ret_probe(tu));

--
2.36.1