diff options
| author | Tejun Heo <tj@kernel.org> | 2026-05-22 07:22:14 -1000 |
|---|---|---|
| committer | Alexei Starovoitov <ast@kernel.org> | 2026-05-23 01:50:33 -0700 |
| commit | f211c81ddc368e5cc6ad69d171bca0fa52e71ad7 (patch) | |
| tree | 88725b232c2d6915422a67f27b17303f642241b7 /include/linux | |
| parent | dc11a4dba2464e5144c318ffaf7fb16b1a5c74d6 (diff) | |
bpf: Add sleepable variant of bpf_arena_alloc_pages for kernel callers
The existing kernel-side export of bpf_arena_alloc_pages is _non_sleepable
only - it's used by the verifier to inline the kfunc when the call site is
non-sleepable. There is no sleepable equivalent for kernel callers. The
kfunc bpf_arena_alloc_pages itself is BPF-only.
sched_ext needs sleepable kernel-side allocs for its arena pool init/grow
paths. Add bpf_arena_alloc_pages_sleepable() mirroring the _non_sleepable
wrapper but passing sleepable=true to arena_alloc_pages().
Signed-off-by: Tejun Heo <tj@kernel.org>
Reviewed-by: Emil Tsalapatis <emil@etsalapatis.com>
Link: https://lore.kernel.org/r/20260522172219.1423324-4-tj@kernel.org
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
Diffstat (limited to 'include/linux')
| -rw-r--r-- | include/linux/bpf.h | 8 |
1 files changed, 8 insertions, 0 deletions
diff --git a/include/linux/bpf.h b/include/linux/bpf.h index bb4261a5df64..c00be24e7244 100644 --- a/include/linux/bpf.h +++ b/include/linux/bpf.h @@ -679,6 +679,8 @@ int bpf_dynptr_from_file_sleepable(struct file *file, u32 flags, void *bpf_arena_alloc_pages_non_sleepable(void *p__map, void *addr__ign, u32 page_cnt, int node_id, u64 flags); void bpf_arena_free_pages_non_sleepable(void *p__map, void *ptr__ign, u32 page_cnt); +void *bpf_arena_alloc_pages_sleepable(void *p__map, void *addr__ign, u32 page_cnt, int node_id, + u64 flags); #else static inline void *bpf_arena_alloc_pages_non_sleepable(void *p__map, void *addr__ign, u32 page_cnt, int node_id, u64 flags) @@ -689,6 +691,12 @@ static inline void *bpf_arena_alloc_pages_non_sleepable(void *p__map, void *addr static inline void bpf_arena_free_pages_non_sleepable(void *p__map, void *ptr__ign, u32 page_cnt) { } + +static inline void *bpf_arena_alloc_pages_sleepable(void *p__map, void *addr__ign, u32 page_cnt, + int node_id, u64 flags) +{ + return NULL; +} #endif extern const struct bpf_map_ops bpf_map_offload_ops; |