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Hou Tao 822ed78fab bpf: Skip rcu_barrier() if rcu_trace_implies_rcu_gp() is true 
If there are pending rcu callback, free_mem_alloc() will use
rcu_barrier_tasks_trace() and rcu_barrier() to wait for the pending
__free_rcu_tasks_trace() and __free_rcu() callback.

If rcu_trace_implies_rcu_gp() is true, there will be no pending
__free_rcu(), so it will be OK to skip rcu_barrier() as well.

Acked-by: Yonghong Song <yhs@fb.com>
Acked-by: Paul E. McKenney <paulmck@kernel.org>
Signed-off-by: Hou Tao <houtao1@huawei.com>
Link: https://lore.kernel.org/r/20221209010947.3130477-3-houtao@huaweicloud.com
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
2022-12-08 17:50:17 -08:00
..
preload
bpf: iterators: Build and use lightweight bootstrap version of bpftool
2022-07-15 12:01:30 -07:00
arraymap.c
bpf: Do btf_record_free outside map_free callback
2022-11-17 19:11:31 -08:00
bloom_filter.c
treewide: use get_random_u32() when possible
2022-10-11 17:42:58 -06:00
bpf_cgrp_storage.c
bpf: Fix a compilation failure with clang lto build
2022-11-30 17:13:25 -08:00
bpf_inode_storage.c
bpf: Fix a compilation failure with clang lto build
2022-11-30 17:13:25 -08:00
bpf_iter.c
bpf: Initialize the bpf_run_ctx in bpf_iter_run_prog()
2022-08-18 17:06:13 -07:00
bpf_local_storage.c
Merge git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net
2022-11-29 13:04:52 -08:00
bpf_lru_list.c
bpf_lru_list: Read double-checked variable once without lock
2021-02-10 15:54:26 -08:00
bpf_lru_list.h
printk: stop including cache.h from printk.h
2022-05-13 07:20:07 -07:00
bpf_lsm.c
bpf: Do not mark certain LSM hook arguments as trusted
2022-12-04 12:59:58 -08:00
bpf_struct_ops_types.h
bpf: Add dummy BPF STRUCT_OPS for test purpose
2021-11-01 14:10:00 -07:00
bpf_struct_ops.c
bpf: Remove is_valid_bpf_tramp_flags()
2022-07-11 21:04:58 +02:00
bpf_task_storage.c
bpf: Fix a compilation failure with clang lto build
2022-11-30 17:13:25 -08:00
btf.c
for-alexei-2022120701
2022-12-07 13:49:21 -08:00
cgroup_iter.c
bpf: Pin the start cgroup in cgroup_iter_seq_init()
2022-11-21 17:40:42 +01:00
cgroup.c
Merge git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net
2022-10-03 17:44:18 -07:00
core.c
bpf: Introduce bpf_obj_new
2022-11-17 19:22:14 -08:00
cpumap.c
bpf: Expand map key argument of bpf_redirect_map to u64
2022-11-15 09:00:27 -08:00
devmap.c
bpf: Expand map key argument of bpf_redirect_map to u64
2022-11-15 09:00:27 -08:00
disasm.c
bpf: Relicense disassembler as GPL-2.0-only OR BSD-2-Clause
2021-09-02 14:49:23 +02:00
disasm.h
bpf: Relicense disassembler as GPL-2.0-only OR BSD-2-Clause
2021-09-02 14:49:23 +02:00
dispatcher.c
bpf: Add explicit cast to 'void *' for __BPF_DISPATCHER_UPDATE()
2022-11-07 16:07:35 -08:00
hashtab.c
bpf: Do btf_record_free outside map_free callback
2022-11-17 19:11:31 -08:00
helpers.c
bpf/docs: Document struct cgroup * kfuncs
2022-12-07 17:11:24 -08:00
inode.c
bpf: Convert bpf_preload.ko to use light skeleton.
2022-02-10 23:31:51 +01:00
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
bpf: Consolidate spin_lock, timer management into btf_record
2022-11-03 22:19:40 -07:00
lpm_trie.c
bpf: Use bpf_map_area_alloc consistently on bpf map creation
2022-08-10 11:50:43 -07:00
Makefile
bpf: Implement cgroup storage available to non-cgroup-attached bpf progs
2022-10-25 23:19:19 -07:00
map_in_map.c
bpf: Add comments for map BTF matching requirement for bpf_list_head
2022-11-17 19:22:14 -08:00
map_in_map.h
bpf: Add map_meta_equal map ops
2020-08-28 15:41:30 +02:00
map_iter.c
bpf: Introduce MEM_RDONLY flag
2021-12-18 13:27:41 -08:00
memalloc.c
bpf: Skip rcu_barrier() if rcu_trace_implies_rcu_gp() is true
2022-12-08 17:50:17 -08:00
mmap_unlock_work.h
bpf: Introduce helper bpf_find_vma
2021-11-07 11:54:51 -08:00
net_namespace.c
net: Add includes masked by netdevice.h including uapi/bpf.h
2021-12-29 20:03:05 -08:00
offload.c
bpf: Use bpf_map_area_alloc consistently on bpf map creation
2022-08-10 11:50:43 -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
bpf: Use raw_spin_trylock() for pcpu_freelist_push/pop in NMI
2020-10-06 00:04:11 +02:00
prog_iter.c
…
queue_stack_maps.c
bpf: Remove unneeded memset in queue_stack_map creation
2022-08-10 11:48:22 -07:00
reuseport_array.c
net: Fix suspicious RCU usage in bpf_sk_reuseport_detach()
2022-08-17 16:42:59 -07:00
ringbuf.c
bpf: Rename MEM_ALLOC to MEM_RINGBUF
2022-11-14 21:52:45 -08:00
stackmap.c
perf/bpf: Always use perf callchains if exist
2022-09-13 15:03:22 +02:00
syscall.c
bpf: Add comments for map BTF matching requirement for bpf_list_head
2022-11-17 19:22:14 -08:00
sysfs_btf.c
bpf: Load and verify kernel module BTFs
2020-11-10 15:25:53 -08:00
task_iter.c
- Yu Zhao's Multi-Gen LRU patches are here. They've been under test in
2022-10-10 17:53:04 -07:00
tnum.c
bpf, tnums: Provably sound, faster, and more precise algorithm for tnum_mul
2021-06-01 13:34:15 +02:00
trampoline.c
bpf: Remove prog->active check for bpf_lsm and bpf_iter
2022-10-25 23:11:46 -07:00
verifier.c
bpf: Fix comment error in fixup_kfunc_call function
2022-12-08 10:05:05 -08:00