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Groups > linux.kernel > #1203822

[PATCH 11/27] perf record: Add clang options for compiling BPF scripts

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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 <wangnan0@huawei.com>
Cc: Alexei Starovoitov <ast@plumgrid.com>
Cc: Brendan Gregg <brendan.d.gregg@gmail.com>
Cc: Daniel Borkmann <daniel@iogearbox.net>
Cc: David Ahern <dsahern@gmail.com>
Cc: He Kuang <hekuang@huawei.com>
Cc: Jiri Olsa <jolsa@kernel.org>
Cc: Kaixu Xia <xiakaixu@huawei.com>
Cc: Masami Hiramatsu <masami.hiramatsu.pt@hitachi.com>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Paul Mackerras <paulus@samba.org>
Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
Cc: Zefan Li <lizefan@huawei.com>
Cc: pi3orama@163.com
Cc: Arnaldo Carvalho de Melo <acme@redhat.com>
Link: http://lkml.kernel.org/n/1436445342-1402-28-git-send-email-wangnan0@huawei.com
---
 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 603793b..c881188 100644
--- a/tools/perf/builtin-record.c
+++ b/tools/perf/builtin-record.c
@@ -30,6 +30,7 @@
 #include "util/auxtrace.h"
 #include "util/parse-branch-options.h"
 #include "util/bpf-loader.h"
+#include "util/llvm-utils.h"
 
 #include <unistd.h>
 #include <sched.h>
@@ -1083,6 +1084,12 @@ 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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[GIT PULL 00/27] perf tools: filtering events using eBPF programs Wang Nan <wangnan0@huawei.com> - 2015-08-10 08:20 +0200
  [PATCH 23/27] perf tools: Generate prologue for BPF programs Wang Nan <wangnan0@huawei.com> - 2015-08-10 08:20 +0200
  [PATCH 18/27] perf probe: Reset args and nargs for probe_trace_event when failure Wang Nan <wangnan0@huawei.com> - 2015-08-10 08:20 +0200
  [PATCH 02/27] perf ebpf: Add the libbpf glue Wang Nan <wangnan0@huawei.com> - 2015-08-10 08:30 +0200
  [PATCH 07/27] perf record: Load all eBPF object into kernel Wang Nan <wangnan0@huawei.com> - 2015-08-10 08:30 +0200
  [PATCH 10/27] perf tools: Suppress probing messages when probing by BPF loading Wang Nan <wangnan0@huawei.com> - 2015-08-10 08:30 +0200
  [PATCH 20/27] perf tools: Add BPF_PROLOGUE config options for further patches Wang Nan <wangnan0@huawei.com> - 2015-08-10 08:30 +0200
  [PATCH 25/27] perf record: Support custom vmlinux path Wang Nan <wangnan0@huawei.com> - 2015-08-10 08:30 +0200
  [PATCH 16/27] bpf tools: Load a program with different instances using preprocessor Wang Nan <wangnan0@huawei.com> - 2015-08-10 08:30 +0200
  [PATCH 09/27] perf tools: Attach eBPF program to perf event Wang Nan <wangnan0@huawei.com> - 2015-08-10 08:30 +0200
  [PATCH 01/27] perf tools: Make perf depend on libbpf Wang Nan <wangnan0@huawei.com> - 2015-08-10 08:30 +0200
  [PATCH 12/27] perf tools: Infrastructure for compiling scriptlets when passing '.c' to --event Wang Nan <wangnan0@huawei.com> - 2015-08-10 08:30 +0200
  [PATCH 11/27] perf record: Add clang options for compiling BPF scripts Wang Nan <wangnan0@huawei.com> - 2015-08-10 08:30 +0200
  [PATCH 04/27] perf probe: Attach trace_probe_event with perf_probe_event Wang Nan <wangnan0@huawei.com> - 2015-08-10 08:30 +0200
  [PATCH 08/27] perf tools: Add bpf_fd field to evsel and config it Wang Nan <wangnan0@huawei.com> - 2015-08-10 08:30 +0200
  [PATCH 03/27] perf tools: Enable passing bpf object file to --event Wang Nan <wangnan0@huawei.com> - 2015-08-10 08:30 +0200
  [PATCH 13/27] perf tests: Enforce LLVM test for BPF test Wang Nan <wangnan0@huawei.com> - 2015-08-10 08:30 +0200

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