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| author | Alexei Starovoitov <ast@kernel.org> | 2022-09-02 14:10:51 -0700 |
|---|---|---|
| committer | Daniel Borkmann <daniel@iogearbox.net> | 2022-09-05 15:33:06 +0200 |
| commit | 8d5a8011b35d387c490a5c977b1d9eb4798aa071 (patch) | |
| tree | 83f515cd987e8a9209f74a1941cc12df0fa0cb71 /include/linux/bpf_mem_alloc.h | |
| parent | 7c266178aa51dd2d4fda1312c5990a8a82c83d70 (diff) | |
| download | linux-8d5a8011b35d387c490a5c977b1d9eb4798aa071.tar.gz linux-8d5a8011b35d387c490a5c977b1d9eb4798aa071.tar.bz2 linux-8d5a8011b35d387c490a5c977b1d9eb4798aa071.zip | |
bpf: Batch call_rcu callbacks instead of SLAB_TYPESAFE_BY_RCU.
SLAB_TYPESAFE_BY_RCU makes kmem_caches non mergeable and slows down
kmem_cache_destroy. All bpf_mem_cache are safe to share across different maps
and programs. Convert SLAB_TYPESAFE_BY_RCU to batched call_rcu. This change
solves the memory consumption issue, avoids kmem_cache_destroy latency and
keeps bpf hash map performance the same.
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>
Acked-by: Kumar Kartikeya Dwivedi <memxor@gmail.com>
Acked-by: Andrii Nakryiko <andrii@kernel.org>
Link: https://lore.kernel.org/bpf/20220902211058.60789-10-alexei.starovoitov@gmail.com
Diffstat (limited to 'include/linux/bpf_mem_alloc.h')
0 files changed, 0 insertions, 0 deletions