From: Andrii Nakryiko <andrii@kernel.org>
Date: Thu, 4 Jan 2024 01:38:40 +0000 (-0800)
Subject: libbpf: use explicit map reuse flag to skip map creation steps
X-Git-Url: http://git.maquefel.me/?a=commitdiff_plain;h=fa98b54bff39f51c46fc96d3385c6292391c277b;p=linux.git

libbpf: use explicit map reuse flag to skip map creation steps

Instead of inferring whether map already point to previously
created/pinned BPF map (which user can specify with bpf_map__reuse_fd()) API),
use explicit map->reused flag that is set in such case.

Acked-by: Jiri Olsa <jolsa@kernel.org>
Signed-off-by: Andrii Nakryiko <andrii@kernel.org>
Link: https://lore.kernel.org/r/20240104013847.3875810-3-andrii@kernel.org
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
---

diff --git a/tools/lib/bpf/libbpf.c b/tools/lib/bpf/libbpf.c
index f1521a400f022..3b678b6172138 100644
--- a/tools/lib/bpf/libbpf.c
+++ b/tools/lib/bpf/libbpf.c
@@ -5465,7 +5465,7 @@ retry:
 			}
 		}
 
-		if (map->fd >= 0) {
+		if (map->reused) {
 			pr_debug("map '%s': skipping creation (preset fd=%d)\n",
 				 map->name, map->fd);
 		} else {