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a8fcf2a39b
twx-linux/kernel/bpf
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Kumar Kartikeya Dwivedi a8fcf2a39b locking: Copy out qspinlock.c to kernel/bpf/rqspinlock.c 
In preparation for introducing a new lock implementation, Resilient
Queued Spin Lock, or rqspinlock, we first begin our modifications by
using the existing qspinlock.c code as the base. Simply copy the code to
a new file and rename functions and variables from 'queued' to
'resilient_queued'.

Since we place the file in kernel/bpf, include needs to be relative.

This helps each subsequent commit in clearly showing how and where the
code is being changed. The only change after a literal copy in this
commit is renaming the functions where necessary, and rename qnodes to
rqnodes. Let's also use EXPORT_SYMBOL_GPL for rqspinlock slowpath.

Reviewed-by: Barret Rhoden <brho@google.com>
Signed-off-by: Kumar Kartikeya Dwivedi <memxor@gmail.com>
Link: https://lore.kernel.org/r/20250316040541.108729-5-memxor@gmail.com
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
2025-03-19 08:03:04 -07:00
..
preload bpf: preload: Add MODULE_DESCRIPTION 2025-03-15 11:48:58 -07:00
arena.c Merge git://git.kernel.org/pub/scm/linux/kernel/git/bpf/bpf bpf-6.14-rc4 2025-02-20 18:13:57 -08:00
arraymap.c bpf: Remove migrate_{disable|enable} in ->map_for_each_callback 2025-01-08 18:06:35 -08:00
bloom_filter.c bpf: Check bloom filter map value size 2024-03-27 09:56:17 -07:00
bpf_cgrp_storage.c bpf: Fix deadlock when freeing cgroup storage 2025-01-29 18:38:19 -08:00
bpf_inode_storage.c bpf: Disable migration when destroying inode storage 2025-01-08 18:06:36 -08:00
bpf_iter.c bpf: Make every prog keep a copy of ctx_arg_info 2025-02-17 18:47:27 -08:00
bpf_local_storage.c bpf: Remove migrate_{disable|enable} from bpf_selem_free() 2025-01-08 18:06:37 -08:00
bpf_lru_list.c
bpf_lru_list.h
bpf_lsm.c bpf: lsm: Add two more sleepable hooks 2025-02-13 19:35:31 -08:00
bpf_struct_ops.c bpf: Allow struct_ops prog to return referenced kptr 2025-02-17 18:47:27 -08:00
bpf_task_storage.c bpf: Remove migrate_{disable|enable} from bpf_task_storage_lock helpers 2025-01-08 18:06:36 -08:00
btf_iter.c bpf: Remove custom build rule 2024-08-30 08:55:26 -07:00
btf_relocate.c bpf: Remove custom build rule 2024-08-30 08:55:26 -07:00
btf.c selftests/bpf: Test gen_pro/epilogue that generate kfuncs 2025-02-25 19:04:43 -08:00
cgroup_iter.c
cgroup.c bpf: Allow pre-ordering for bpf cgroup progs 2025-03-15 11:48:25 -07:00
core.c bpf: Make perf_event_read_output accessible in all program types. 2025-03-18 10:21:59 -07:00
cpumap.c xdp: get rid of xdp_frame::mem.id 2024-12-12 18:22:52 -08:00
cpumask.c bpf: fix missing kdoc string fields in cpumask.c 2025-03-15 11:48:57 -07:00
crypto.c bpf: crypto: make state and IV dynptr nullable 2024-06-13 16:33:04 -07:00
devmap.c Merge git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net 2024-12-12 14:19:05 -08:00
disasm.c bpftool: Using the right format specifiers 2025-03-17 13:50:56 -07:00
disasm.h
dispatcher.c bpf: Add kernel symbol for struct_ops trampoline 2024-11-12 17:13:46 -08:00
hashtab.c bpf: Check map->record at the beginning of check_and_free_fields() 2025-03-15 12:06:50 -07:00
helpers.c bpf: Make perf_event_read_output accessible in all program types. 2025-03-18 10:21:59 -07:00
inode.c bpf: Preserve param->string when parsing mount options 2024-10-22 12:56:38 -07:00
Kconfig bpf: remove CONFIG_BPF_JIT dependency on CONFIG_MODULES of 2024-05-14 00:36:29 -07:00
kmem_cache_iter.c bpf: Add open coded version of kmem_cache iterator 2024-11-01 11:08:32 -07:00
link_iter.c
local_storage.c bpf: Replace 8 seq_puts() calls by seq_putc() calls 2024-07-29 12:53:00 -07:00
log.c bpf: Introduce support for bpf_local_irq_{save,restore} 2024-12-04 08:38:29 -08:00
lpm_trie.c bpf: Remove migrate_{disable|enable} from LPM trie 2025-01-08 18:06:35 -08:00
Makefile bpf: Avoid deadlock caused by nested kprobe and fentry bpf programs 2024-12-14 09:49:27 -08:00
map_in_map.c bpf: switch maps to CLASS(fd, ...) 2024-08-13 15:58:17 -07:00
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 Merge git://git.kernel.org/pub/scm/linux/kernel/git/bpf/bpf 2024-11-13 12:52:51 -08:00
mmap_unlock_work.h
mprog.c
net_namespace.c
offload.c
percpu_freelist.c
percpu_freelist.h
prog_iter.c
queue_stack_maps.c
range_tree.c bpf: Disable migration before calling ops->map_free() 2025-01-08 18:06:36 -08:00
range_tree.h bpf: Introduce range_tree data structure and use it in bpf arena 2024-11-13 13:52:45 -08:00
relo_core.c bpf: Remove custom build rule 2024-08-30 08:55:26 -07:00
reuseport_array.c bpf: Use sockfd_put() helper 2024-08-30 08:57:47 -07:00
ringbuf.c bpf: unify VM_WRITE vs VM_MAYWRITE use in BPF map mmaping logic 2025-01-29 09:49:50 -08:00
rqspinlock.c locking: Copy out qspinlock.c to kernel/bpf/rqspinlock.c 2025-03-19 08:03:04 -07:00
stackmap.c bpf: wire up sleepable bpf_get_stack() and bpf_get_task_stack() helpers 2024-09-11 09:58:31 -07:00
syscall.c bpf: Return prog btf_id without capable check 2025-03-17 13:45:12 -07:00
sysfs_btf.c btf: Switch vmlinux BTF attribute to sysfs_bin_attr_simple_read() 2025-01-09 10:44:06 +01:00
task_iter.c vfs-6.13.file 2024-11-18 10:30:29 -08:00
tcx.c
tnum.c bpf: simplify tnum output if a fully known constant 2023-12-02 11:36:51 -08:00
token.c remove pointless includes of <linux/fdtable.h> 2024-10-07 13:34:41 -04:00
trampoline.c bpf: Add kernel symbol for struct_ops trampoline 2024-11-12 17:13:46 -08:00
verifier.c bpf: correct use/def for may_goto instruction 2025-03-15 11:48:30 -07:00