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/* SPDX-License-Identifier: GPL-2.0 */
/*
* Kernel features the loader probes before load and hands to the BPF side in
* one rodata word, so that a program can carry both the path a feature enables
* and its fallback while the verifier prunes the one the running kernel cannot
* take. scx_utils sets the word in the ops open macros. The bits are mirrored
* in rust/scx_utils/src/compat.rs.
*
* Included by scx/common.bpf.h; don't include directly.
*
* Copyright (c) 2026 Meta Platforms, Inc. and affiliates.
* Copyright (c) 2026 Tejun Heo <tj@kernel.org>
*/
#ifndef __SCX_FEATURES_BPF_H
#define __SCX_FEATURES_BPF_H
enum scx_lib_feature {
/* the JIT lowers fetching AND, OR and XOR on arena pointers */
SCX_LIB_FEAT_ARENA_FETCH_BITOPS = 1ULL << 0,
};
const volatile u64 scx_lib_features __weak;
static __always_inline bool scx_lib_has(u64 feat)
{
return scx_lib_features & feat;
}
#endif /* __SCX_FEATURES_BPF_H */
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