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| author | Yonghong Song <yhs@fb.com> | 2018-04-29 07:28:07 +0200 |
|---|---|---|
| committer | Alexei Starovoitov <ast@kernel.org> | 2018-04-29 17:45:53 +0200 |
| commit | 5f4126327494c189767ca64b222abadb07c55e3d (patch) | |
| tree | da49fcd3d06c7cd69253d8f7c02da61958457b1f /kernel/bpf/stackmap.c | |
| parent | bpf, doc: Update bpf_jit_enable limitation for CONFIG_BPF_JIT_ALWAYS_ON (diff) | |
| download | linux-5f4126327494c189767ca64b222abadb07c55e3d.tar.xz linux-5f4126327494c189767ca64b222abadb07c55e3d.zip | |
bpf: change prototype for stack_map_get_build_id_offset
This patch didn't incur functionality change. The function prototype
got changed so that the same function can be reused later.
Signed-off-by: Yonghong Song <yhs@fb.com>
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
Diffstat (limited to 'kernel/bpf/stackmap.c')
| -rw-r--r-- | kernel/bpf/stackmap.c | 13 |
1 files changed, 5 insertions, 8 deletions
diff --git a/kernel/bpf/stackmap.c b/kernel/bpf/stackmap.c index 57eeb1234b67..04f6ec1679f0 100644 --- a/kernel/bpf/stackmap.c +++ b/kernel/bpf/stackmap.c @@ -262,16 +262,11 @@ out: return ret; } -static void stack_map_get_build_id_offset(struct bpf_map *map, - struct stack_map_bucket *bucket, +static void stack_map_get_build_id_offset(struct bpf_stack_build_id *id_offs, u64 *ips, u32 trace_nr, bool user) { int i; struct vm_area_struct *vma; - struct bpf_stack_build_id *id_offs; - - bucket->nr = trace_nr; - id_offs = (struct bpf_stack_build_id *)bucket->data; /* * We cannot do up_read() in nmi context, so build_id lookup is @@ -361,8 +356,10 @@ BPF_CALL_3(bpf_get_stackid, struct pt_regs *, regs, struct bpf_map *, map, pcpu_freelist_pop(&smap->freelist); if (unlikely(!new_bucket)) return -ENOMEM; - stack_map_get_build_id_offset(map, new_bucket, ips, - trace_nr, user); + new_bucket->nr = trace_nr; + stack_map_get_build_id_offset( + (struct bpf_stack_build_id *)new_bucket->data, + ips, trace_nr, user); trace_len = trace_nr * sizeof(struct bpf_stack_build_id); if (hash_matches && bucket->nr == trace_nr && memcmp(bucket->data, new_bucket->data, trace_len) == 0) { |