linux-kernel - [RFC PATCH v6 32/32] perf record: Add LLVM options for compiling BPF scripts

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Date:	Tue, 9 Jun 2015 05:50:36 +0000
From:	Wang Nan <wangnan0@...wei.com>
To:	<acme@...nel.org>, <ast@...mgrid.com>, <brendan.d.gregg@...il.com>,
	<daniel@...earbox.net>, <namhyung@...nel.org>,
	<masami.hiramatsu.pt@...achi.com>, <paulus@...ba.org>,
	<a.p.zijlstra@...llo.nl>, <mingo@...hat.com>, <jolsa@...nel.org>,
	<dsahern@...il.com>
CC:	<linux-kernel@...r.kernel.org>, <lizefan@...wei.com>,
	<hekuang@...wei.com>, <xiakaixu@...wei.com>, <pi3orama@....com>
Subject: [RFC PATCH v6 32/32] perf record: Add LLVM options for compiling BPF scripts

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 4 options to 'perf record' for
this propose: --clang-path, --clang-opt, --llc-path and --llc-opt.

Signed-off-by: Wang Nan <wangnan0@...wei.com>
---
 tools/perf/builtin-record.c | 8 ++++++++
 1 file changed, 8 insertions(+)

diff --git a/tools/perf/builtin-record.c b/tools/perf/builtin-record.c
index 235c3d9..ad5892e 100644
--- a/tools/perf/builtin-record.c
+++ b/tools/perf/builtin-record.c
@@ -1070,6 +1070,14 @@ struct option __record_options[] = {
 	parse_clockid),
 	OPT_STRING_OPTARG('S', "snapshot", &record.opts.auxtrace_snapshot_opts,
 			  "opts", "AUX area tracing Snapshot Mode", ""),
+	OPT_STRING(0, "clang-path", &bpf_param.clang_path, "clang patch",
+		    "clang binary to use for compiling BPF scriptlets"),
+	OPT_STRING(0, "clang-opt", &bpf_param.clang_opt, "clang options",
+		    "options passed to clang when compiling BPF scriptlets"),
+	OPT_STRING(0, "llc-path", &bpf_param.llc_path, "llc path",
+		    "llc binary to use for compiling BPF scriptlets"),
+	OPT_STRING(0, "llc-opt", &bpf_param.llc_opt, "llc opt",
+		    "options passed to llc when compiling BPF scriptlets"),
 	OPT_END()
 };
 
-- 
1.8.3.4

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