Messages in this thread Patch in this message | | | From | Jiri Olsa <> | Subject | [PATCH RFC 2/5] bpf: Use file object build id in stackmap | Date | Wed, 1 Feb 2023 14:57:34 +0100 |
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Use build id from file object in stackmap if it's available.
Signed-off-by: Jiri Olsa <jolsa@kernel.org> --- kernel/bpf/stackmap.c | 8 ++++++++ 1 file changed, 8 insertions(+)
diff --git a/kernel/bpf/stackmap.c b/kernel/bpf/stackmap.c index aecea7451b61..944cb260a42c 100644 --- a/kernel/bpf/stackmap.c +++ b/kernel/bpf/stackmap.c @@ -156,7 +156,15 @@ static void stack_map_get_build_id_offset(struct bpf_stack_build_id *id_offs, goto build_id_valid; } vma = find_vma(current->mm, ips[i]); +#ifdef CONFIG_FILE_BUILD_ID + if (vma && vma->vm_file && vma->vm_file->f_bid) { + memcpy(id_offs[i].build_id, + vma->vm_file->f_bid->data, + vma->vm_file->f_bid->sz); + } else { +#else if (!vma || build_id_parse(vma, id_offs[i].build_id, NULL)) { +#endif /* per entry fall back to ips */ id_offs[i].status = BPF_STACK_BUILD_ID_IP; id_offs[i].ip = ips[i]; -- 2.39.1
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