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515ee52b |
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06-Jul-2023 |
Anton Protopopov <aspsk@isovalent.com> |
bpf: make preloaded map iterators to display map elements count 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>
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3aac1ead |
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29-Sep-2020 |
Toke Høiland-Jørgensen <toke@redhat.com> |
bpf: Move prog->aux->linked_prog and trampoline into bpf_link on attach In preparation for allowing multiple attachments of freplace programs, move the references to the target program and trampoline into the bpf_tracing_link structure when that is created. To do this atomically, introduce a new mutex in prog->aux to protect writing to the two pointers to target prog and trampoline, and rename the members to make it clear that they are related. With this change, it is no longer possible to attach the same tracing program multiple times (detaching in-between), since the reference from the tracing program to the target disappears on the first attach. However, since the next patch will let the caller supply an attach target, that will also make it possible to attach to the same place multiple times. Signed-off-by: Toke Høiland-Jørgensen <toke@redhat.com> Signed-off-by: Alexei Starovoitov <ast@kernel.org> Acked-by: Andrii Nakryiko <andriin@fb.com> Link: https://lore.kernel.org/bpf/160138355059.48470.2503076992210324984.stgit@toke.dk
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