linux-kernel - [PATCH 05/13] perf bpf: Add compile option

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Message-Id: <20180312094313.18738-6-jolsa@kernel.org>
Date:   Mon, 12 Mar 2018 10:43:05 +0100
From:   Jiri Olsa <jolsa@...nel.org>
To:     Arnaldo Carvalho de Melo <acme@...nel.org>
Cc:     lkml <linux-kernel@...r.kernel.org>,
        Ingo Molnar <mingo@...nel.org>,
        Namhyung Kim <namhyung@...nel.org>,
        David Ahern <dsahern@...il.com>,
        Alexander Shishkin <alexander.shishkin@...ux.intel.com>,
        Peter Zijlstra <a.p.zijlstra@...llo.nl>
Subject: [PATCH 05/13] perf bpf: Add compile option

Adding -c/--compile option to provide compilation
for ebpf objects, like:

  $ perf bpf -c samples/syscall-counts.c
  LLVM: dumping samples/syscall-counts.o

Link: http://lkml.kernel.org/n/tip-w48lyepbrde7no35sxi2vtxh@git.kernel.org
Signed-off-by: Jiri Olsa <jolsa@...nel.org>
---
 tools/perf/builtin-bpf.c | 7 +++++++
 1 file changed, 7 insertions(+)

diff --git a/tools/perf/builtin-bpf.c b/tools/perf/builtin-bpf.c
index 6f02352caf79..1ae93fd01a97 100644
--- a/tools/perf/builtin-bpf.c
+++ b/tools/perf/builtin-bpf.c
@@ -145,6 +145,7 @@ int cmd_bpf(int argc, const char **argv)
 		"perf bpf [<options>] -- <command> [<options>]",
 		NULL
 	};
+	const char *compile_src = NULL;
 	const struct option bpf_options[] = {
 		OPT_CALLBACK('e', "event", &bpf.evlist, "event",
 			     "event selector. use 'perf list' to list available events",
@@ -159,6 +160,8 @@ int cmd_bpf(int argc, const char **argv)
 			   "record events on existing thread id"),
 		OPT_INCR('v', "verbose", &verbose,
 			 "be more verbose"),
+		OPT_STRING('c', "compile", &compile_src, "eBPF source",
+			   "compile eBPF object"),
 		OPT_END()
 	};
 
@@ -170,6 +173,10 @@ int cmd_bpf(int argc, const char **argv)
 
 	argc = parse_options(argc, argv, bpf_options, bpf_usage,
 			     PARSE_OPT_STOP_AT_NON_OPTION);
+
+	if (compile_src)
+		return bpf__compile(compile_src);
+
 	if (!argc && target__none(&bpf.target))
 		usage_with_options(bpf_usage, bpf_options);
 
-- 
2.13.6