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libbpf: move feature detection code into its own file

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It's quite a lot of well isolated code, so it seems like a good
candidate to move it out of libbpf.c to reduce its size.

Acked-by: John Fastabend <john.fastabend@gmail.com>
Signed-off-by: Andrii Nakryiko <andrii@kernel.org>
Link: https://lore.kernel.org/r/20231213190842.3844987-5-andrii@kernel.org
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
This commit is contained in:
Andrii Nakryiko
2023-12-13 11:08:36 -08:00
committed by Andrii Nakryiko
parent feda0728e0
commit fab327c888
5 changed files with 478 additions and 465 deletions
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12
src/libbpf_internal.h
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@@ -360,10 +360,20 @@ enum kern_feature_id {
__FEAT_CNT,
};
struct kern_feature_cache;
enum kern_feature_result {
FEAT_UNKNOWN = 0,
FEAT_SUPPORTED = 1,
FEAT_MISSING = 2,
};
struct kern_feature_cache {
enum kern_feature_result res[__FEAT_CNT];
};
bool feat_supported(struct kern_feature_cache *cache, enum kern_feature_id feat_id);
bool kernel_supports(const struct bpf_object *obj, enum kern_feature_id feat_id);
int probe_kern_syscall_wrapper(void);
int probe_memcg_account(void);
int bump_rlimit_memlock(void);