Yan Zhai 00bf631224 bpf: report RCU QS in cpumap kthread ... When there are heavy load, cpumap kernel threads can be busy polling packets from redirect queues and block out RCU tasks from reaching quiescent states. It is insufficient to just call cond_resched() in such context. Periodically raise a consolidated RCU QS before cond_resched fixes the problem. Fixes: 6710e11269 ("bpf: introduce new bpf cpu map type BPF_MAP_TYPE_CPUMAP") Reviewed-by: Jesper Dangaard Brouer <hawk@kernel.org> Signed-off-by: Yan Zhai <yan@cloudflare.com> Acked-by: Paul E. McKenney <paulmck@kernel.org> Acked-by: Jesper Dangaard Brouer <hawk@kernel.org> Link: https://lore.kernel.org/r/c17b9f1517e19d813da3ede5ed33ee18496bb5d8.1710877680.git.yan@cloudflare.com Signed-off-by: Jakub Kicinski <kuba@kernel.org>		2024-03-20 21:05:43 -07:00
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preload	bpf: make preloaded map iterators to display map elements count	2023-07-06 12:42:25 -07:00
arena.c	bpf: Introduce bpf_arena.	2024-03-11 15:37:23 -07:00
arraymap.c	bpf: Consistently use BPF token throughout BPF verifier logic	2024-01-24 16:21:01 -08:00
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: Enable bpf_cgrp_storage for cgroup1 non-attach case	2023-12-08 17:08:18 -08:00
bpf_inode_storage.c
bpf_iter.c	bpf: move sleepable flag from bpf_prog_aux to bpf_prog	2024-03-11 16:41:25 -07:00
bpf_local_storage.c	bpf: Allow compiler to inline most of bpf_local_storage_lookup()	2024-02-11 14:06:24 -08:00
bpf_lru_list.c
bpf_lru_list.h	bpf: lru: Remove unused declaration bpf_lru_promote()	2023-08-08 17:21:42 -07:00
bpf_lsm.c	bpf: Minor clean-up to sleepable_lsm_hooks BTF set	2024-02-01 18:37:45 +01:00
bpf_struct_ops.c	bpf: struct_ops supports more than one page for trampolines.	2024-03-04 14:09:20 -08:00
bpf_task_storage.c
btf.c	bpf: Recognize btf_decl_tag("arg: Arena") as PTR_TO_ARENA.	2024-03-11 15:37:24 -07:00
cgroup.c	net: adopt skb_network_offset() and similar helpers	2024-03-04 08:47:06 +00:00
cgroup_iter.c	bpf: Let verifier consider {task,cgroup} is trusted in bpf_iter_reg	2023-11-07 15:24:25 -08:00
core.c	bpf: move sleepable flag from bpf_prog_aux to bpf_prog	2024-03-11 16:41:25 -07:00
cpumap.c	bpf: report RCU QS in cpumap kthread	2024-03-20 21:05:43 -07:00
cpumask.c	bpf: treewide: Annotate BPF kfuncs in BTF	2024-01-31 20:40:56 -08:00
devmap.c	bpf: Fix DEVMAP_HASH overflow check on 32-bit arches	2024-03-07 20:02:38 -08:00
disasm.c	bpf: Disasm support for addr_space_cast instruction.	2024-03-11 15:37:24 -07:00
disasm.h
dispatcher.c	bpf: Use arch_bpf_trampoline_size	2023-12-06 17:17:20 -08:00
hashtab.c	bpf: Fix hashtab overflow check on 32-bit arches	2024-03-07 20:05:56 -08:00
helpers.c	bpf-next-for-netdev	2024-03-02 20:50:59 -08:00
inode.c	bpf: Support symbolic BPF FS delegation mount options	2024-01-24 16:21:02 -08:00
Kconfig	bpf: Merge two CONFIG_BPF entries	2024-02-07 16:38:20 -08:00
link_iter.c
local_storage.c
log.c	bpf: Recognize addr_space_cast instruction in the verifier.	2024-03-11 15:37:24 -07:00
lpm_trie.c	bpf: Replace bpf_lpm_trie_key 0-length array with flexible array	2024-02-29 22:52:43 +01:00
Makefile	bpf: Introduce bpf_arena.	2024-03-11 15:37:23 -07:00
map_in_map.c	bpf: Optimize the free of inner map	2023-12-04 17:50:26 -08:00
map_in_map.h	bpf: Add map and need_defer parameters to .map_fd_put_ptr()	2023-12-04 17:50:26 -08:00
map_iter.c	bpf: treewide: Annotate BPF kfuncs in BTF	2024-01-31 20:40:56 -08:00
memalloc.c	bpf: Remove unnecessary cpu == 0 check in memalloc	2024-01-04 10:18:14 -08:00
mmap_unlock_work.h
mprog.c	bpf: Handle bpf_mprog_query with NULL entry	2023-10-06 17:11:20 -07:00
net_namespace.c
offload.c	Merge git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net	2023-09-21 21:49:45 +02:00
percpu_freelist.c
percpu_freelist.h
prog_iter.c
queue_stack_maps.c	bpf: Avoid deadlock when using queue and stack maps from NMI	2023-09-11 19:04:49 -07:00
reuseport_array.c	bpf: Centralize permissions checks for all BPF map types	2023-06-19 14:04:04 +02:00
ringbuf.c	bpf: Fold smp_mb__before_atomic() into atomic_set_release()	2023-10-24 14:26:07 +02:00
stackmap.c	bpf: Fix stackmap overflow check on 32-bit arches	2024-03-07 20:06:25 -08:00
syscall.c	bpf: move sleepable flag from bpf_prog_aux to bpf_prog	2024-03-11 16:41:25 -07:00
sysfs_btf.c
task_iter.c	bpf: Fix an issue due to uninitialized bpf_iter_task	2024-02-19 12:28:15 +01:00
tcx.c	bpf, tcx: Get rid of tcx_link_const	2023-10-23 15:01:53 -07:00
tnum.c	bpf: simplify tnum output if a fully known constant	2023-12-02 11:36:51 -08:00
token.c	bpf,token: Use BIT_ULL() to convert the bit mask	2024-01-29 20:04:55 -08:00
trampoline.c	bpf: move sleepable flag from bpf_prog_aux to bpf_prog	2024-03-11 16:41:25 -07:00
verifier.c	for-netdev	2024-03-11 18:06:04 -07:00