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libbpf: Fix is_pow_of_2

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Move the correct definition from linker.c into libbpf_internal.h.

Fixes: 0087a681fa8c ("libbpf: Automatically fix up BPF_MAP_TYPE_RINGBUF size, if necessary")
Reported-by: Yuze Chi <chiyuze@google.com>
Signed-off-by: Yuze Chi <chiyuze@google.com>
Signed-off-by: Ian Rogers <irogers@google.com>
Signed-off-by: Andrii Nakryiko <andrii@kernel.org>
Link: https://lore.kernel.org/bpf/20220603055156.2830463-1-irogers@google.com
This commit is contained in:
Yuze Chi
2022-06-02 22:51:56 -07:00
committed by Andrii Nakryiko
parent 55638904af
commit ad0783c430
3 changed files with 5 additions and 10 deletions
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5
src/libbpf_internal.h
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@@ -580,4 +580,9 @@ struct bpf_link * usdt_manager_attach_usdt(struct usdt_manager *man,
const char *usdt_provider, const char *usdt_name,
__u64 usdt_cookie);
static inline bool is_pow_of_2(size_t x)
{
return x && (x & (x - 1)) == 0;
}
#endif /* __LIBBPF_LIBBPF_INTERNAL_H */