First patch tries to remove kzalloc/kfree from getsockopt for the
common cases.
Second patch switches cgroup_bpf_enabled to be per-attach to
to add only overhead for the cgroup attach types used on the system.
No visible user-side changes.
v2:
- perf numbers for getsockopt kmalloc reduction (Song Liu)
- (sk) in BPF_CGROUP_PRE_CONNECT_ENABLED (Song Liu)
- 128 -> 64 buffer size, BUILD_BUG_ON (Martin KaFai Lau)
Stanislav Fomichev (2):
bpf: try to avoid kzalloc in cgroup/{s,g}etsockopt
bpf: split cgroup_bpf_enabled per attach type
include/linux/bpf-cgroup.h | 36 +++++++++++++------------
include/linux/filter.h | 3 +++
kernel/bpf/cgroup.c | 54 +++++++++++++++++++++++++++++++-------
net/ipv4/af_inet.c | 9 ++++---
net/ipv4/udp.c | 7 +++--
net/ipv6/af_inet6.c | 9 ++++---
net/ipv6/udp.c | 7 +++--
7 files changed, 83 insertions(+), 42 deletions(-)
--
2.29.2.729.g45daf8777d-goog
