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| author | Jiri Olsa <jolsa@kernel.org> | 2020-07-11 23:53:24 +0200 |
|---|---|---|
| committer | Alexei Starovoitov <ast@kernel.org> | 2020-07-13 19:42:02 +0200 |
| commit | c9a0f3b85e09dd16665b639cb884490410619434 (patch) | |
| tree | d0f83e40d55fa26ed0b96aee69fcb66fc521be3f /kernel/bpf/stackmap.c | |
| parent | bpf: Add BTF_ID_LIST/BTF_ID/BTF_ID_UNUSED macros (diff) | |
| download | linux-c9a0f3b85e09dd16665b639cb884490410619434.tar.xz linux-c9a0f3b85e09dd16665b639cb884490410619434.zip | |
bpf: Resolve BTF IDs in vmlinux image
Using BTF_ID_LIST macro to define lists for several helpers
using BTF arguments.
And running resolve_btfids on vmlinux elf object during linking,
so the .BTF_ids section gets the IDs resolved.
Signed-off-by: Jiri Olsa <jolsa@kernel.org>
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
Tested-by: Andrii Nakryiko <andriin@fb.com>
Acked-by: Andrii Nakryiko <andriin@fb.com>
Link: https://lore.kernel.org/bpf/20200711215329.41165-5-jolsa@kernel.org
Diffstat (limited to 'kernel/bpf/stackmap.c')
| -rw-r--r-- | kernel/bpf/stackmap.c | 5 |
1 files changed, 4 insertions, 1 deletions
diff --git a/kernel/bpf/stackmap.c b/kernel/bpf/stackmap.c index a6c361ed7937..48d8e739975f 100644 --- a/kernel/bpf/stackmap.c +++ b/kernel/bpf/stackmap.c @@ -9,6 +9,7 @@ #include <linux/elf.h> #include <linux/pagemap.h> #include <linux/irq_work.h> +#include <linux/btf_ids.h> #include "percpu_freelist.h" #define STACK_CREATE_FLAG_MASK \ @@ -576,7 +577,9 @@ BPF_CALL_4(bpf_get_task_stack, struct task_struct *, task, void *, buf, return __bpf_get_stack(regs, task, buf, size, flags); } -static int bpf_get_task_stack_btf_ids[5]; +BTF_ID_LIST(bpf_get_task_stack_btf_ids) +BTF_ID(struct, task_struct) + const struct bpf_func_proto bpf_get_task_stack_proto = { .func = bpf_get_task_stack, .gpl_only = false, |