Jiri Olsa 6720869280 tools/resolve_btfids: Warn when having multiple IDs for single type ... The kernel image can contain multiple types (structs/unions) with the same name. This causes distinct type hierarchies in BTF data and makes resolve_btfids fail with error like: BTFIDS vmlinux FAILED unresolved symbol udp6_sock as reported by Qais Yousef [1]. This change adds warning when multiple types of the same name are detected: BTFIDS vmlinux WARN: multiple IDs found for 'file': 526, 113351 - using 526 WARN: multiple IDs found for 'sk_buff': 2744, 113958 - using 2744 We keep the lower ID for the given type instance and let the build continue. Also changing the 'nr' variable name to 'nr_types' to avoid confusion. [1] https://lore.kernel.org/lkml/20201229151352.6hzmjvu3qh6p2qgg@e107158-lin/ Signed-off-by: Jiri Olsa <jolsa@kernel.org> Signed-off-by: Alexei Starovoitov <ast@kernel.org> Acked-by: Andrii Nakryiko <andrii@kernel.org> Link: https://lore.kernel.org/bpf/20210105234219.970039-1-jolsa@kernel.org		2021-01-05 18:11:55 -08:00
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.gitignore	tools/resolve_btfids: Use libbpf's btf__parse() API	2020-08-03 16:39:48 +02:00
Build
main.c	tools/resolve_btfids: Warn when having multiple IDs for single type	2021-01-05 18:11:55 -08:00
Makefile	tools: Factor HOSTCC, HOSTLD, HOSTAR definitions	2020-11-11 12:18:22 -08:00