bpf: make preloaded map iterators to display map elements count

Browse source

Add another column to the /sys/fs/bpf/maps.debug iterator to display
cur_entries, the current number of entries in the map as is returned
by the bpf_map_sum_elem_count kfunc. Also fix formatting.

Example:

    # cat /sys/fs/bpf/maps.debug
      id name             max_entries  cur_entries
       2 iterator.rodata            1            0
     125 cilium_auth_map       524288          666
     126 cilium_runtime_          256            0
     127 cilium_signals            32            0
     128 cilium_node_map        16384         1344
     129 cilium_events             32            0
     ...

Signed-off-by: Anton Protopopov <aspsk@isovalent.com>
Link: https://lore.kernel.org/r/20230706133932.45883-5-aspsk@isovalent.com
Signed-off-by: Alexei Starovoitov <ast@kernel.org>

...

This commit is contained in:

Anton Protopopov 2023-07-06 13:39:31 +00:00 • committed by Alexei Starovoitov

parent 9bc421b6be

commit 515ee52b22

2 changed files with 275 additions and 260 deletions

Show all changes Ignore whitespace when comparing lines Ignore changes in amount of whitespace Ignore changes in whitespace at EOL

Download patch file Download diff file Expand all files Collapse all files

9

kernel/bpf/preload/iterators/iterators.bpf.c

View file

526

kernel/bpf/preload/iterators/iterators.lskel-little-endian.h

View file