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libbpf: Ensure functions with always_inline attribute are inline

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GCC expects the always_inline attribute to only be set on inline
functions, as such we should make all functions with this attribute
use the __always_inline macro which makes the function inline and
sets the attribute.

Fixes errors like:
/home/buildroot/bpf-next/tools/testing/selftests/bpf/tools/include/bpf/bpf_tracing.h:439:1: error: ‘always_inline’ function might not be inlinable [-Werror=attributes]
  439 | ____##name(unsigned long long *ctx, ##args)
      | ^~~~

Signed-off-by: James Hilliard <james.hilliard1@gmail.com>
Signed-off-by: Andrii Nakryiko <andrii@kernel.org>
Acked-by: Jiri Olsa <jolsa@kernel.org>
Link: https://lore.kernel.org/bpf/20220803151403.793024-1-james.hilliard1@gmail.com
This commit is contained in:
James Hilliard
2022-08-03 09:14:03 -06:00
committed by Andrii Nakryiko
parent bd1e5cff31
commit 69d537ba0b
2 changed files with 9 additions and 9 deletions
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4
src/usdt.bpf.h
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@@ -232,7 +232,7 @@ long bpf_usdt_cookie(struct pt_regs *ctx)
*/
#define BPF_USDT(name, args...) \
name(struct pt_regs *ctx); \
static __attribute__((always_inline)) typeof(name(0)) \
static __always_inline typeof(name(0)) \
____##name(struct pt_regs *ctx, ##args); \
typeof(name(0)) name(struct pt_regs *ctx) \
{ \
@@ -241,7 +241,7 @@ typeof(name(0)) name(struct pt_regs *ctx) \
return ____##name(___bpf_usdt_args(args)); \
_Pragma("GCC diagnostic pop") \
} \
static __attribute__((always_inline)) typeof(name(0)) \
static __always_inline typeof(name(0)) \
____##name(struct pt_regs *ctx, ##args)
#endif /* __USDT_BPF_H__ */