linux-kernel - [PATCH 1/2] bpf, libbpf: Avoid unused function warning on bpf_tail_call

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Message-Id: <20210113223609.3358812-1-irogers@google.com>
Date:   Wed, 13 Jan 2021 14:36:08 -0800
From:   Ian Rogers <irogers@...gle.com>
To:     Alexei Starovoitov <ast@...nel.org>,
        Daniel Borkmann <daniel@...earbox.net>,
        Martin KaFai Lau <kafai@...com>,
        Song Liu <songliubraving@...com>, Yonghong Song <yhs@...com>,
        Andrii Nakryiko <andriin@...com>,
        John Fastabend <john.fastabend@...il.com>,
        KP Singh <kpsingh@...omium.org>,
        Quentin Monnet <quentin@...valent.com>,
        Jean-Philippe Brucker <jean-philippe@...aro.org>,
        Tobias Klauser <tklauser@...tanz.ch>,
        Ilya Leoshkevich <iii@...ux.ibm.com>, netdev@...r.kernel.org,
        bpf@...r.kernel.org, linux-kernel@...r.kernel.org
Cc:     Ian Rogers <irogers@...gle.com>
Subject: [PATCH 1/2] bpf, libbpf: Avoid unused function warning on bpf_tail_call_static

Add inline to __always_inline making it match the linux/compiler.h.
Adding this avoids an unused function warning on bpf_tail_call_static
when compining with -Wall.

Signed-off-by: Ian Rogers <irogers@...gle.com>
---
 tools/lib/bpf/bpf_helpers.h | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/tools/lib/bpf/bpf_helpers.h b/tools/lib/bpf/bpf_helpers.h
index 72b251110c4d..ae6c975e0b87 100644
--- a/tools/lib/bpf/bpf_helpers.h
+++ b/tools/lib/bpf/bpf_helpers.h
@@ -30,7 +30,7 @@
 #define SEC(NAME) __attribute__((section(NAME), used))
 
 #ifndef __always_inline
-#define __always_inline __attribute__((always_inline))
+#define __always_inline inline __attribute__((always_inline))
 #endif
 #ifndef __noinline
 #define __noinline __attribute__((noinline))
-- 
2.30.0.284.gd98b1dd5eaa7-goog