From: Alexei Starovoitov <ast@xxxxxxxxxx>
vmlinux BTF includes all kernel enums.
Add __PAGE_SIZE = PAGE_SIZE enum, so that bpf programs
that include vmlinux.h can easily access it.
Signed-off-by: Alexei Starovoitov <ast@xxxxxxxxxx>
---
kernel/bpf/core.c | 7 ++++++-
1 file changed, 6 insertions(+), 1 deletion(-)
diff --git a/kernel/bpf/core.c b/kernel/bpf/core.c
index 2829077f0461..3aa3f56a4310 100644
--- a/kernel/bpf/core.c
+++ b/kernel/bpf/core.c
@@ -88,13 +88,18 @@ void *bpf_internal_load_pointer_neg_helper(const struct sk_buff *skb, int k, uns
return NULL;
}
+/* tell bpf programs that include vmlinux.h kernel's PAGE_SIZE */
+enum page_size_enum {
+ __PAGE_SIZE = PAGE_SIZE
+};
+
struct bpf_prog *bpf_prog_alloc_no_stats(unsigned int size, gfp_t gfp_extra_flags)
{
gfp_t gfp_flags = bpf_memcg_flags(GFP_KERNEL | __GFP_ZERO | gfp_extra_flags);
struct bpf_prog_aux *aux;
struct bpf_prog *fp;
- size = round_up(size, PAGE_SIZE);
+ size = round_up(size, __PAGE_SIZE);
fp = __vmalloc(size, gfp_flags);
if (fp == NULL)
return NULL;
--
2.34.1
