On 08/09/2018 05:55 PM, Yonghong Song wrote:
> Commit a26ca7c982cb ("bpf: btf: Add pretty print support to
> the basic arraymap") added pretty print support to array map.
> This patch adds pretty print for hash and lru_hash maps.
>
> The following example shows the pretty-print result of a pinned hashmap.
> Without this patch set, user will get an error instead.
>
> struct map_value {
> int count_a;
> int count_b;
> };
>
> cat /sys/fs/bpf/pinned_hash_map:
>
> 87907: {87907,87908}
> 57354: {37354,57355}
> 76625: {76625,76626}
> ...
>
> Patch #1 fixed a bug in bpffs map_seq_next() function so that
> all elements in the hash table will be traversed.
> Patch #2 implemented map_seq_show_elem() and map_check_btf()
> callback functions for hash and lru hash maps.
> Patch #3 enhanced tools/testing/selftests/bpf/test_btf.c to
> test bpffs hash and lru hash map pretty print.
>
> Yonghong Song (3):
> bpf: fix bpffs non-array map seq_show issue
> bpf: btf: add pretty print for hash/lru_hash maps
> tools/bpf: add bpffs pretty print btf test for hash/lru_hash maps
>
> kernel/bpf/hashtab.c | 44 +++++++++++++++++
> kernel/bpf/inode.c | 8 ++--
> tools/testing/selftests/bpf/test_btf.c | 87
> ++++++++++++++++++++++++++++------
> 3 files changed, 121 insertions(+), 18 deletions(-)
Applied to bpf-next, thanks Yonghong!
