netdev - [PATCH v4 bpf-next] Add CONFIG_DEBUG_INFO_BTF and CONFIG_DEBUG_INFO_BTF

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Message-Id: <20210222195846.155483-1-grantseltzer@gmail.com>
Date:   Mon, 22 Feb 2021 19:58:46 +0000
From:   grantseltzer <grantseltzer@...il.com>
To:     andrii@...nel.org, daniel@...earbox.net, kafai@...com,
        songliubraving@...com, john.fastabend@...il.com, kpsingh@...nel.org
Cc:     irogers@...gle.com, yhs@...com, tklauser@...tanz.ch,
        netdev@...r.kernel.org, mrostecki@...nsuse.org, ast@...nel.org,
        quentin@...valent.com, bpf@...r.kernel.org,
        grantseltzer <grantseltzer@...il.com>
Subject: [PATCH v4 bpf-next] Add CONFIG_DEBUG_INFO_BTF and CONFIG_DEBUG_INFO_BTF_MODULES check to bpftool feature command

This adds both the CONFIG_DEBUG_INFO_BTF and CONFIG_DEBUG_INFO_BTF_MODULES
kernel compile option to output of the bpftool feature command.
This is relevant for developers that want to account for data structure
definition differences between kernels.

Signed-off-by: Grant Seltzer <grantseltzer@...il.com>
---
 tools/bpf/bpftool/feature.c | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/tools/bpf/bpftool/feature.c b/tools/bpf/bpftool/feature.c
index 359960a8f..40a88df27 100644
--- a/tools/bpf/bpftool/feature.c
+++ b/tools/bpf/bpftool/feature.c
@@ -336,6 +336,10 @@ static void probe_kernel_image_config(const char *define_prefix)
 		{ "CONFIG_BPF_JIT", },
 		/* Avoid compiling eBPF interpreter (use JIT only) */
 		{ "CONFIG_BPF_JIT_ALWAYS_ON", },
+		/* Kernel BTF debug information available */
+		{ "CONFIG_DEBUG_INFO_BTF", },
+		/* Kernel module BTF debug information available */
+		{ "CONFIG_DEBUG_INFO_BTF_MODULES", },
 
 		/* cgroups */
 		{ "CONFIG_CGROUPS", },
-- 
2.29.2