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Groups > linux.kernel > #1203815

[PATCH 25/27] perf record: Support custom vmlinux path

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From: He Kuang <hekuang@huawei.com>

Make perf-record command support --vmlinux option if BPF_PROLOGUE is on.

'perf record' needs vmlinux as the source of DWARF info to generate
prologue for BPF programs, so path of vmlinux should be specified.

Short name 'k' has been taken by 'clockid'. This patch skips the short
option name and use '--vmlinux' for vmlinux path.

Signed-off-by: He Kuang <hekuang@huawei.com>
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/1436445342-1402-38-git-send-email-wangnan0@huawei.com
---
 tools/perf/builtin-record.c | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/tools/perf/builtin-record.c b/tools/perf/builtin-record.c
index c881188..b8a12aa 100644
--- a/tools/perf/builtin-record.c
+++ b/tools/perf/builtin-record.c
@@ -1089,6 +1089,10 @@ struct option __record_options[] = {
 		   "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"),
+#ifdef HAVE_BPF_PROLOGUE
+	OPT_STRING(0, "vmlinux", &symbol_conf.vmlinux_name,
+		   "file", "vmlinux pathname"),
+#endif
 #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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