From mboxrd@z Thu Jan 1 00:00:00 1970 From: Daniel Borkmann Subject: [PATCH net-next 4/7] bpf: export whether tail call has jited owner Date: Sun, 2 Jul 2017 02:13:28 +0200 Message-ID: <24e20a662e8c5fe3fb6acaedea518df4d090f6ab.1498952486.git.daniel@iogearbox.net> References: Cc: ast@fb.com, john.fastabend@gmail.com, netdev@vger.kernel.org, Daniel Borkmann To: davem@davemloft.net Return-path: Received: from www62.your-server.de ([213.133.104.62]:57540 "EHLO www62.your-server.de" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1752172AbdGBANp (ORCPT ); Sat, 1 Jul 2017 20:13:45 -0400 In-Reply-To: In-Reply-To: References: Sender: netdev-owner@vger.kernel.org List-ID: 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 Acked-by: John Fastabend Acked-by: Alexei Starovoitov --- kernel/bpf/syscall.c | 7 ++++++- 1 file changed, 6 insertions(+), 1 deletion(-) 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 -- 1.9.3