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Groups > linux.kernel > #1242082

[PATCH 08/22] 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/ebpf-6yw9eg0ej3l4jnqhinngkw86@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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[GIT PULL 00/22] perf tools: filtering events using eBPF programs Wang Nan <wangnan0@huawei.com> - 2015-10-08 10:40 +0200
  [PATCH 22/22] perf test: Test BPF prologue Wang Nan <wangnan0@huawei.com> - 2015-10-08 10:40 +0200
  [PATCH 14/22] perf tools: Add BPF_PROLOGUE config options for further patches Wang Nan <wangnan0@huawei.com> - 2015-10-08 10:40 +0200
  [PATCH 19/22] perf record: Support custom vmlinux path Wang Nan <wangnan0@huawei.com> - 2015-10-08 10:40 +0200
  [PATCH 13/22] bpf tools: Load a program with different instances using preprocessor Wang Nan <wangnan0@huawei.com> - 2015-10-08 10:40 +0200
  [PATCH 05/22] perf record: Load eBPF object into kernel Wang Nan <wangnan0@huawei.com> - 2015-10-08 10:40 +0200
  [PATCH 15/22] perf tools: Compile dwarf-regs.c if CONFIG_BPF_PROLOGUE is on Wang Nan <wangnan0@huawei.com> - 2015-10-08 10:40 +0200
  [PATCH 21/22] perf test: Enforce LLVM test, add kbuild test Wang Nan <wangnan0@huawei.com> - 2015-10-08 10:40 +0200
  [PATCH 02/22] perf ebpf: Add the libbpf glue Wang Nan <wangnan0@huawei.com> - 2015-10-08 10:40 +0200
  [PATCH 04/22] perf record, bpf: Create probe points for BPF programs Wang Nan <wangnan0@huawei.com> - 2015-10-08 10:40 +0200
  [PATCH 18/22] perf tools: Use same BPF program if arguments are identical Wang Nan <wangnan0@huawei.com> - 2015-10-08 10:40 +0200
  [PATCH 10/22] perf test: Enforce LLVM test for BPF test Wang Nan <wangnan0@huawei.com> - 2015-10-08 10:50 +0200
  [PATCH 11/22] perf test: Add 'perf test BPF' Wang Nan <wangnan0@huawei.com> - 2015-10-08 10:50 +0200
  [PATCH 09/22] perf tools: Compile scriptlets to BPF objects when passing '.c' to --event Wang Nan <wangnan0@huawei.com> - 2015-10-08 10:50 +0200
  [PATCH 08/22] perf record: Add clang options for compiling BPF scripts Wang Nan <wangnan0@huawei.com> - 2015-10-08 10:50 +0200
  [PATCH 17/22] perf tools: Generate prologue for BPF programs Wang Nan <wangnan0@huawei.com> - 2015-10-08 10:50 +0200
  [PATCH 03/22] perf tools: Enable passing bpf object file to --event Wang Nan <wangnan0@huawei.com> - 2015-10-08 10:50 +0200
  [PATCH 06/22] perf tools: Collect perf_evsel in BPF object files Wang Nan <wangnan0@huawei.com> - 2015-10-08 10:50 +0200
  [PATCH 07/22] perf tools: Attach eBPF program to perf event Wang Nan <wangnan0@huawei.com> - 2015-10-08 10:50 +0200
  Re: [GIT PULL 00/22] perf tools: filtering events using eBPF programs Arnaldo Carvalho de Melo <acme@redhat.com> - 2015-10-08 15:50 +0200

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