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5af6807bdb
linux/kernel/bpf
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Alexei Starovoitov 5af6807bdb bpf: Introduce bpf_mem_free_rcu() similar to kfree_rcu(). 
Introduce bpf_mem_[cache_]free_rcu() similar to kfree_rcu().
Unlike bpf_mem_[cache_]free() that links objects for immediate reuse into
per-cpu free list the _rcu() flavor waits for RCU grace period and then moves
objects into free_by_rcu_ttrace list where they are waiting for RCU
task trace grace period to be freed into slab.

The life cycle of objects:
alloc: dequeue free_llist
free: enqeueu free_llist
free_rcu: enqueue free_by_rcu -> waiting_for_gp
free_llist above high watermark -> free_by_rcu_ttrace
after RCU GP waiting_for_gp -> free_by_rcu_ttrace
free_by_rcu_ttrace -> waiting_for_gp_ttrace -> slab

Signed-off-by: Alexei Starovoitov <ast@kernel.org>
Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>
Acked-by: Hou Tao <houtao1@huawei.com>
Link: https://lore.kernel.org/bpf/20230706033447.54696-13-alexei.starovoitov@gmail.com
2023-07-12 23:45:23 +02:00
..
preload
bpf: make preloaded map iterators to display map elements count
2023-07-06 12:42:25 -07:00
arraymap.c
bpf: return long from bpf_map_ops funcs
2023-03-22 15:11:30 -07:00
bloom_filter.c
bpf: Centralize permissions checks for all BPF map types
2023-06-19 14:04:04 +02:00
bpf_cgrp_storage.c
bpf: Teach verifier that certain helpers accept NULL pointer.
2023-04-04 16:57:16 -07:00
bpf_inode_storage.c
Networking changes for 6.4.
2023-04-26 16:07:23 -07:00
bpf_iter.c
bpf: implement numbers iterator
2023-03-08 16:19:51 -08:00
bpf_local_storage.c
bpf: Centralize permissions checks for all BPF map types
2023-06-19 14:04:04 +02:00
bpf_lru_list.c
bpf: Address KCSAN report on bpf_lru_list
2023-05-12 12:01:03 -07:00
bpf_lru_list.h
bpf: Address KCSAN report on bpf_lru_list
2023-05-12 12:01:03 -07:00
bpf_lsm.c
bpf: Fix the kernel crash caused by bpf_setsockopt().
2023-01-26 23:26:40 -08:00
bpf_struct_ops_types.h
…
bpf_struct_ops.c
bpf: Centralize permissions checks for all BPF map types
2023-06-19 14:04:04 +02:00
bpf_task_storage.c
bpf: Teach verifier that certain helpers accept NULL pointer.
2023-04-04 16:57:16 -07:00
btf.c
bpf: Resolve modifiers when walking structs
2023-06-30 10:35:59 +02:00
cgroup_iter.c
cgroup: bpf: use cgroup_lock()/cgroup_unlock() wrappers
2023-03-17 12:07:13 -10:00
cgroup.c
bpf-next-for-netdev
2023-05-16 19:50:05 -07:00
core.c
bpf: Hide unused bpf_patch_call_args
2023-06-12 19:00:08 +02:00
cpumap.c
bpf: Centralize permissions checks for all BPF map types
2023-06-19 14:04:04 +02:00
cpumask.c
bpf: Replace bpf_cpumask_any* with bpf_cpumask_any_distribute*
2023-06-12 15:09:11 -07:00
devmap.c
bpf: Centralize permissions checks for all BPF map types
2023-06-19 14:04:04 +02:00
disasm.c
…
disasm.h
…
dispatcher.c
bpf: Synchronize dispatcher update with bpf_dispatcher_xdp_func
2022-12-14 12:02:14 -08:00
hashtab.c
bpf: populate the per-cpu insertions/deletions counters for hashmaps
2023-07-06 12:42:25 -07:00
helpers.c
bpf: Make bpf_refcount_acquire fallible for non-owning refs
2023-06-05 13:17:20 -07:00
inode.c
bpf: Support O_PATH FDs in BPF_OBJ_PIN and BPF_OBJ_GET commands
2023-05-23 23:31:42 +02:00
Kconfig
rcu: Make the TASKS_RCU Kconfig option be selected
2022-04-20 16:52:58 -07:00
link_iter.c
bpf: Add bpf_link iterator
2022-05-10 11:20:45 -07:00
local_storage.c
cgroup changes for v6.4-rc1
2023-04-29 10:05:22 -07:00
log.c
bpf: drop unnecessary user-triggerable WARN_ONCE in verifierl log
2023-05-16 22:34:50 -07:00
lpm_trie.c
bpf: Centralize permissions checks for all BPF map types
2023-06-19 14:04:04 +02:00
Makefile
bpf: Split off basic BPF verifier log into separate file
2023-04-11 18:05:42 +02:00
map_in_map.c
bpf: Fix elem_size not being set for inner maps
2023-06-02 16:22:12 -07:00
map_in_map.h
…
map_iter.c
bpf: add a new kfunc to return current bpf_map elements count
2023-07-06 12:42:25 -07:00
memalloc.c
bpf: Introduce bpf_mem_free_rcu() similar to kfree_rcu().
2023-07-12 23:45:23 +02:00
mmap_unlock_work.h
…
net_namespace.c
…
offload.c
bpf: netdev: init the offload table earlier
2023-05-15 07:07:41 -07:00
percpu_freelist.c
bpf: Initialize same number of free nodes for each pcpu_freelist
2022-11-11 12:05:14 -08:00
percpu_freelist.h
…
prog_iter.c
…
queue_stack_maps.c
bpf: Centralize permissions checks for all BPF map types
2023-06-19 14:04:04 +02:00
reuseport_array.c
bpf: Centralize permissions checks for all BPF map types
2023-06-19 14:04:04 +02:00
ringbuf.c
bpf: Remove unnecessary ring buffer size check
2023-07-05 14:09:45 +02:00
stackmap.c
bpf: Centralize permissions checks for all BPF map types
2023-06-19 14:04:04 +02:00
syscall.c
bpf: Support ->fill_link_info for perf_event
2023-07-11 20:07:51 -07:00
sysfs_btf.c
…
task_iter.c
bpf: keep a reference to the mm, in case the task is dead.
2022-12-28 14:11:48 -08:00
tnum.c
…
trampoline.c
bpf: Fix memleak due to fentry attach failure
2023-05-15 23:41:59 +02:00
verifier.c
bpf: teach verifier actual bounds of bpf_get_smp_processor_id() result
2023-07-12 07:57:18 -07:00