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authorDaniel Borkmann <daniel@iogearbox.net>2017-07-02 02:13:28 +0200
committerDavid S. Miller <davem@davemloft.net>2017-07-03 02:22:52 -0700
commit9780c0ab1a4e64ef6998c4d83f9df5be806a02dc (patch)
tree168d31b1e9d40945fb859b2de1950cc4d2c6851f
parentf96da09473b52c09125cc9bf7d7d4576ae8229e0 (diff)
downloadop-kernel-dev-9780c0ab1a4e64ef6998c4d83f9df5be806a02dc.zip
op-kernel-dev-9780c0ab1a4e64ef6998c4d83f9df5be806a02dc.tar.gz
bpf: export whether tail call has jited owner
We do export through fdinfo already whether a prog is JITed or not, given a program load can fail in case of either prog or tail call map has JITed property, but neither both are JITed or not JITed, we can facilitate error reporting in loaders like iproute2 through exporting owner_jited of tail call map. We already do export owner_prog_type through this facility, so parser can pick up both for comparison. Signed-off-by: Daniel Borkmann <daniel@iogearbox.net> Acked-by: John Fastabend <john.fastabend@gmail.com> Acked-by: Alexei Starovoitov <ast@kernel.org> Signed-off-by: David S. Miller <davem@davemloft.net>
-rw-r--r--kernel/bpf/syscall.c7
1 files changed, 6 insertions, 1 deletions
diff --git a/kernel/bpf/syscall.c b/kernel/bpf/syscall.c
index d4d47de..1898047 100644
--- a/kernel/bpf/syscall.c
+++ b/kernel/bpf/syscall.c
@@ -216,10 +216,12 @@ static void bpf_map_show_fdinfo(struct seq_file *m, struct file *filp)
const struct bpf_map *map = filp->private_data;
const struct bpf_array *array;
u32 owner_prog_type = 0;
+ u32 owner_jited = 0;
if (map->map_type == BPF_MAP_TYPE_PROG_ARRAY) {
array = container_of(map, struct bpf_array, map);
owner_prog_type = array->owner_prog_type;
+ owner_jited = array->owner_jited;
}
seq_printf(m,
@@ -236,9 +238,12 @@ static void bpf_map_show_fdinfo(struct seq_file *m, struct file *filp)
map->map_flags,
map->pages * 1ULL << PAGE_SHIFT);
- if (owner_prog_type)
+ if (owner_prog_type) {
seq_printf(m, "owner_prog_type:\t%u\n",
owner_prog_type);
+ seq_printf(m, "owner_jited:\t%u\n",
+ owner_jited);
+ }
}
#endif
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