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1/* SPDX-License-Identifier: GPL-2.0 */2/*3 * Copyright (c) 2024 Meta Platforms, Inc. and affiliates.4 * Copyright (c) 2024 Tejun Heo <tj@kernel.org>5 * Copyright (c) 2024 David Vernet <dvernet@meta.com>6 */7#ifndef __SCX_COMPAT_BPF_H8#define __SCX_COMPAT_BPF_H9 10#define __COMPAT_ENUM_OR_ZERO(__type, __ent) \11({ \12 __type __ret = 0; \13 if (bpf_core_enum_value_exists(__type, __ent)) \14 __ret = __ent; \15 __ret; \16})17 18/* v6.12: 819513666966 ("sched_ext: Add cgroup support") */19#define __COMPAT_scx_bpf_task_cgroup(p) \20 (bpf_ksym_exists(scx_bpf_task_cgroup) ? \21 scx_bpf_task_cgroup((p)) : NULL)22 23/* v6.12: 4c30f5ce4f7a ("sched_ext: Implement scx_bpf_dispatch[_vtime]_from_dsq()") */24#define __COMPAT_scx_bpf_dispatch_from_dsq_set_slice(it, slice) \25 (bpf_ksym_exists(scx_bpf_dispatch_from_dsq_set_slice) ? \26 scx_bpf_dispatch_from_dsq_set_slice((it), (slice)) : (void)0)27#define __COMPAT_scx_bpf_dispatch_from_dsq_set_vtime(it, vtime) \28 (bpf_ksym_exists(scx_bpf_dispatch_from_dsq_set_vtime) ? \29 scx_bpf_dispatch_from_dsq_set_vtime((it), (vtime)) : (void)0)30#define __COMPAT_scx_bpf_dispatch_from_dsq(it, p, dsq_id, enq_flags) \31 (bpf_ksym_exists(scx_bpf_dispatch_from_dsq) ? \32 scx_bpf_dispatch_from_dsq((it), (p), (dsq_id), (enq_flags)) : false)33#define __COMPAT_scx_bpf_dispatch_vtime_from_dsq(it, p, dsq_id, enq_flags) \34 (bpf_ksym_exists(scx_bpf_dispatch_vtime_from_dsq) ? \35 scx_bpf_dispatch_vtime_from_dsq((it), (p), (dsq_id), (enq_flags)) : false)36 37/*38 * Define sched_ext_ops. This may be expanded to define multiple variants for39 * backward compatibility. See compat.h::SCX_OPS_LOAD/ATTACH().40 */41#define SCX_OPS_DEFINE(__name, ...) \42 SEC(".struct_ops.link") \43 struct sched_ext_ops __name = { \44 __VA_ARGS__, \45 };46 47#endif /* __SCX_COMPAT_BPF_H */48