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| author | Yonghong Song <yonghong.song@linux.dev> | 2023-08-27 08:27:34 -0700 |
|---|---|---|
| committer | Alexei Starovoitov <ast@kernel.org> | 2023-09-08 08:42:17 -0700 |
| commit | 41a5db8d8161457b121a03fde999ff6e00090ee2 (patch) | |
| tree | 4474dade0ac40c98c45eff020a62cab62471f525 /kernel/bpf/core.c | |
| parent | 3903802bb99a263a3c26422c3d30a121b1f6f939 (diff) | |
| download | linux-41a5db8d8161457b121a03fde999ff6e00090ee2.tar.gz linux-41a5db8d8161457b121a03fde999ff6e00090ee2.tar.bz2 linux-41a5db8d8161457b121a03fde999ff6e00090ee2.zip | |
bpf: Add support for non-fix-size percpu mem allocation
This is needed for later percpu mem allocation when the
allocation is done by bpf program. For such cases, a global
bpf_global_percpu_ma is added where a flexible allocation
size is needed.
Signed-off-by: Yonghong Song <yonghong.song@linux.dev>
Link: https://lore.kernel.org/r/20230827152734.1995725-1-yonghong.song@linux.dev
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
Diffstat (limited to 'kernel/bpf/core.c')
| -rw-r--r-- | kernel/bpf/core.c | 8 |
1 files changed, 5 insertions, 3 deletions
diff --git a/kernel/bpf/core.c b/kernel/bpf/core.c index 0f8f036d8bd1..95599df82ee4 100644 --- a/kernel/bpf/core.c +++ b/kernel/bpf/core.c @@ -64,8 +64,8 @@ #define OFF insn->off #define IMM insn->imm -struct bpf_mem_alloc bpf_global_ma; -bool bpf_global_ma_set; +struct bpf_mem_alloc bpf_global_ma, bpf_global_percpu_ma; +bool bpf_global_ma_set, bpf_global_percpu_ma_set; /* No hurry in this branch * @@ -2921,7 +2921,9 @@ static int __init bpf_global_ma_init(void) ret = bpf_mem_alloc_init(&bpf_global_ma, 0, false); bpf_global_ma_set = !ret; - return ret; + ret = bpf_mem_alloc_init(&bpf_global_percpu_ma, 0, true); + bpf_global_percpu_ma_set = !ret; + return !bpf_global_ma_set || !bpf_global_percpu_ma_set; } late_initcall(bpf_global_ma_init); #endif |