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authorRoman Gushchin <guroan@gmail.com>2018-12-10 15:43:01 -0800
committerAlexei Starovoitov <ast@kernel.org>2018-12-12 15:33:38 -0800
commit9a1126b63190e2541dd5d643f4bfeb5a7f493729 (patch)
tree35e30e558ead54bd7268bbc48161beb6af8e3c6a /include/linux/btf.h
parent1b2b234b1318afb3775d4c6624fd5a96558f19df (diff)
bpf: add bpffs pretty print for cgroup local storage maps
Implement bpffs pretty printing for cgroup local storage maps (both shared and per-cpu). Output example (captured for tools/testing/selftests/bpf/netcnt_prog.c): Shared: $ cat /sys/fs/bpf/map_2 # WARNING!! The output is for debug purpose only # WARNING!! The output format will change {4294968594,1}: {9999,1039896} Per-cpu: $ cat /sys/fs/bpf/map_1 # WARNING!! The output is for debug purpose only # WARNING!! The output format will change {4294968594,1}: { cpu0: {0,0,0,0,0} cpu1: {0,0,0,0,0} cpu2: {1,104,0,0,0} cpu3: {0,0,0,0,0} } Signed-off-by: Roman Gushchin <guro@fb.com> Cc: Alexei Starovoitov <ast@kernel.org> Cc: Daniel Borkmann <daniel@iogearbox.net> Acked-by: Martin KaFai Lau <kafai@fb.com> Signed-off-by: Daniel Borkmann <daniel@iogearbox.net> Signed-off-by: Alexei Starovoitov <ast@kernel.org>
Diffstat (limited to 'include/linux/btf.h')
-rw-r--r--include/linux/btf.h1
1 files changed, 1 insertions, 0 deletions
diff --git a/include/linux/btf.h b/include/linux/btf.h
index b98405a56383..a4cf075b89eb 100644
--- a/include/linux/btf.h
+++ b/include/linux/btf.h
@@ -47,6 +47,7 @@ void btf_type_seq_show(const struct btf *btf, u32 type_id, void *obj,
int btf_get_fd_by_id(u32 id);
u32 btf_id(const struct btf *btf);
bool btf_name_offset_valid(const struct btf *btf, u32 offset);
+bool btf_type_is_reg_int(const struct btf_type *t, u32 expected_size);
#ifdef CONFIG_BPF_SYSCALL
const struct btf_type *btf_type_by_id(const struct btf *btf, u32 type_id);