linux-kernel - [tip:perf/urgent] bpf tools: Add new API bpf_object__get

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Message-ID: <tip-45825d8ab8ef6287f5d05aea141419d8d4278852@git.kernel.org>
Date:	Sat, 7 Nov 2015 23:32:57 -0800
From:	tip-bot for Wang Nan <tipbot@...or.com>
To:	linux-tip-commits@...r.kernel.org
Cc:	tglx@...utronix.de, namhyung@...nel.org, lizefan@...wei.com,
	hpa@...or.com, linux-kernel@...r.kernel.org, wangnan0@...wei.com,
	mingo@...nel.org, jolsa@...nel.org, acme@...hat.com
Subject: [tip:perf/urgent] bpf tools: Add new API bpf_object__get_kversion
 ()

Commit-ID:  45825d8ab8ef6287f5d05aea141419d8d4278852
Gitweb:     http://git.kernel.org/tip/45825d8ab8ef6287f5d05aea141419d8d4278852
Author:     Wang Nan <wangnan0@...wei.com>
AuthorDate: Fri, 6 Nov 2015 13:49:38 +0000
Committer:  Arnaldo Carvalho de Melo <acme@...hat.com>
CommitDate: Fri, 6 Nov 2015 15:56:41 -0300

bpf tools: Add new API bpf_object__get_kversion()

bpf_object__get_kversion() can be used to fetch value of object's
'version' section. Following patch will use it for error reporting.

Signed-off-by: Wang Nan <wangnan0@...wei.com>
Cc: Jiri Olsa <jolsa@...nel.org>
Cc: Namhyung Kim <namhyung@...nel.org>
Cc: Zefan Li <lizefan@...wei.com>
Cc: pi3orama@....com
Link: http://lkml.kernel.org/r/1446817783-86722-3-git-send-email-wangnan0@huawei.com
Signed-off-by: Arnaldo Carvalho de Melo <acme@...hat.com>
---
 tools/lib/bpf/libbpf.c | 8 ++++++++
 tools/lib/bpf/libbpf.h | 1 +
 2 files changed, 9 insertions(+)

diff --git a/tools/lib/bpf/libbpf.c b/tools/lib/bpf/libbpf.c
index 07b492d..e176bad 100644
--- a/tools/lib/bpf/libbpf.c
+++ b/tools/lib/bpf/libbpf.c
@@ -1055,6 +1055,14 @@ bpf_object__get_name(struct bpf_object *obj)
 	return obj->path;
 }
 
+unsigned int
+bpf_object__get_kversion(struct bpf_object *obj)
+{
+	if (!obj)
+		return 0;
+	return obj->kern_version;
+}
+
 struct bpf_program *
 bpf_program__next(struct bpf_program *prev, struct bpf_object *obj)
 {
diff --git a/tools/lib/bpf/libbpf.h b/tools/lib/bpf/libbpf.h
index 30a40e9..c9a9aef 100644
--- a/tools/lib/bpf/libbpf.h
+++ b/tools/lib/bpf/libbpf.h
@@ -56,6 +56,7 @@ void bpf_object__close(struct bpf_object *object);
 int bpf_object__load(struct bpf_object *obj);
 int bpf_object__unload(struct bpf_object *obj);
 const char *bpf_object__get_name(struct bpf_object *obj);
+unsigned int bpf_object__get_kversion(struct bpf_object *obj);
 
 struct bpf_object *bpf_object__next(struct bpf_object *prev);
 #define bpf_object__for_each_safe(pos, tmp)			\
--
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