From 611edf1bacc51355ccb497915695db7f869cb382 Mon Sep 17 00:00:00 2001 From: Yuze Chi Date: Thu, 2 Jun 2022 22:51:56 -0700 Subject: libbpf: Fix is_pow_of_2 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 Signed-off-by: Yuze Chi Signed-off-by: Ian Rogers Signed-off-by: Andrii Nakryiko Link: https://lore.kernel.org/bpf/20220603055156.2830463-1-irogers@google.com --- tools/lib/bpf/libbpf_internal.h | 5 +++++ 1 file changed, 5 insertions(+) (limited to 'tools/lib/bpf/libbpf_internal.h') diff --git a/tools/lib/bpf/libbpf_internal.h b/tools/lib/bpf/libbpf_internal.h index 4abdbe2fea9d..ef5d975078e5 100644 --- a/tools/lib/bpf/libbpf_internal.h +++ b/tools/lib/bpf/libbpf_internal.h @@ -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 */ -- cgit