From e85465e420be1e408f9465f8b6fd9e2f7b17aea1 Mon Sep 17 00:00:00 2001 From: Ilya Leoshkevich Date: Sat, 28 Jan 2023 01:06:40 +0100 Subject: [PATCH] libbpf: Simplify barrier_var() Use a single "+r" constraint instead of the separate "=r" and "0". Signed-off-by: Ilya Leoshkevich Link: https://lore.kernel.org/r/20230128000650.1516334-22-iii@linux.ibm.com Signed-off-by: Alexei Starovoitov --- 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 d37c4fe2849d2..5ec1871acb2fc 100644 --- a/tools/lib/bpf/bpf_helpers.h +++ b/tools/lib/bpf/bpf_helpers.h @@ -109,7 +109,7 @@ * This is a variable-specific variant of more global barrier(). */ #ifndef barrier_var -#define barrier_var(var) asm volatile("" : "=r"(var) : "0"(var)) +#define barrier_var(var) asm volatile("" : "+r"(var)) #endif /* -- 2.30.2