Although previous patch allows setting BPF compiler related options in
perfconfig, on some ad-hoc situation it still requires passing options
through cmdline. This patch introduces 2 options to 'perf record' for
this propose: --clang-path and --clang-opt.

Signed-off-by: Wang Nan <wangn...@huawei.com>
Cc: Alexei Starovoitov <a...@plumgrid.com>
Cc: Brendan Gregg <brendan.d.gr...@gmail.com>
Cc: Daniel Borkmann <dan...@iogearbox.net>
Cc: David Ahern <dsah...@gmail.com>
Cc: He Kuang <heku...@huawei.com>
Cc: Jiri Olsa <jo...@kernel.org>
Cc: Kaixu Xia <xiaka...@huawei.com>
Cc: Masami Hiramatsu <masami.hiramatsu...@hitachi.com>
Cc: Namhyung Kim <namhy...@kernel.org>
Cc: Paul Mackerras <pau...@samba.org>
Cc: Peter Zijlstra <a.p.zijls...@chello.nl>
Cc: Zefan Li <lize...@huawei.com>
Cc: pi3or...@163.com
Cc: Arnaldo Carvalho de Melo <a...@redhat.com>
Link: http://lkml.kernel.org/n/ebpf-6yw9eg0ej3l4jnqhinngk...@git.kernel.org
---
 tools/perf/builtin-record.c | 7 +++++++
 1 file changed, 7 insertions(+)

diff --git a/tools/perf/builtin-record.c b/tools/perf/builtin-record.c
index 24ace2f..847cc67 100644
--- a/tools/perf/builtin-record.c
+++ b/tools/perf/builtin-record.c
@@ -31,6 +31,7 @@
 #include "util/auxtrace.h"
 #include "util/parse-branch-options.h"
 #include "util/parse-regs-options.h"
+#include "util/llvm-utils.h"
 
 #include <unistd.h>
 #include <sched.h>
@@ -1117,6 +1118,12 @@ struct option __record_options[] = {
                        "per thread proc mmap processing timeout in ms"),
        OPT_BOOLEAN(0, "switch-events", &record.opts.record_switch_events,
                    "Record context switch events"),
+#ifdef HAVE_LIBBPF_SUPPORT
+       OPT_STRING(0, "clang-path", &llvm_param.clang_path, "clang path",
+                  "clang binary to use for compiling BPF scriptlets"),
+       OPT_STRING(0, "clang-opt", &llvm_param.clang_opt, "clang options",
+                  "options passed to clang when compiling BPF scriptlets"),
+#endif
        OPT_END()
 };
 
-- 
1.8.3.4

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