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selftests/bpf: Enable CONFIG_IKCONFIG_PROC in config 

CONFIG_IKCONFIG_PROC is required by BPF selftests, otherwise we get
errors like this:

 libbpf: failed to open system Kconfig
 libbpf: failed to load object 'kprobe_multi'
 libbpf: failed to load BPF skeleton 'kprobe_multi': -22

It's because /proc/config.gz is opened in bpf_object__read_kconfig_file()
in tools/lib/bpf/libbpf.c:

        file = gzopen("/proc/config.gz", "r");

So this patch enables CONFIG_IKCONFIG and CONFIG_IKCONFIG_PROC in
tools/testing/selftests/bpf/config.

Suggested-by: Mat Martineau <mathew.j.martineau@linux.intel.com>
Signed-off-by: Geliang Tang <geliang.tang@suse.com>
Signed-off-by: Mat Martineau <mathew.j.martineau@linux.intel.com>
Signed-off-by: Andrii Nakryiko <andrii@kernel.org>
Acked-by: Andrii Nakryiko <andrii@kernel.org>
Link: https://lore.kernel.org/bpf/20220519233016.105670-3-mathew.j.martineau@linux.intel.com
This commit is contained in:
Geliang Tang 2022-05-19 16:30:11 -07:00 committed by Andrii Nakryiko
parent 3bc253c2e6
commit d3294cb1e0
1 changed files with 2 additions and 0 deletions
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tools/testing/selftests/bpf/config
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@ -54,3 +54,5 @@ CONFIG_NF_DEFRAG_IPV6=y
CONFIG_NF_CONNTRACK=y
CONFIG_USERFAULTFD=y
CONFIG_FPROBE=y
CONFIG_IKCONFIG=y
CONFIG_IKCONFIG_PROC=y