KP Singh 9e7a4d9831 bpf: Allow LSM programs to use bpf spin locks ... Usage of spin locks was not allowed for tracing programs due to insufficient preemption checks. The verifier does not currently prevent LSM programs from using spin locks, but the helpers are not exposed via bpf_lsm_func_proto. Based on the discussion in [1], non-sleepable LSM programs should be able to use bpf_spin_{lock, unlock}. Sleepable LSM programs can be preempted which means that allowng spin locks will need more work (disabling preemption and the verifier ensuring that no sleepable helpers are called when a spin lock is held). [1]: https://lore.kernel.org/bpf/20201103153132.2717326-1-kpsingh@chromium.org/T/#md601a053229287659071600d3483523f752cd2fb Signed-off-by: KP Singh <kpsingh@google.com> Signed-off-by: Alexei Starovoitov <ast@kernel.org> Acked-by: Song Liu <songliubraving@fb.com> Acked-by: Martin KaFai Lau <kafai@fb.com> Link: https://lore.kernel.org/bpf/20201106103747.2780972-2-kpsingh@chromium.org		2020-11-06 08:08:37 -08:00
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preload	bpf: Move prog->aux->linked_prog and trampoline into bpf_link on attach	2020-09-29 13:09:23 -07:00
arraymap.c	bpf: Allow for map-in-map with dynamic inner array map entries	2020-10-11 10:21:04 -07:00
bpf_inode_storage.c	bpf: Allow specifying a BTF ID per argument in function protos	2020-09-21 15:00:40 -07:00
bpf_iter.c	bpf: Permit cond_resched for some iterators	2020-10-28 14:54:31 -07:00
bpf_local_storage.c	bpf: Use hlist_add_head_rcu when linking to local_storage	2020-09-19 01:12:35 +02:00
bpf_lru_list.c	treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 206	2019-05-30 11:29:53 -07:00
bpf_lru_list.h	bpf: Fix a typo "inacitve" -> "inactive"	2020-04-06 21:54:10 +02:00
bpf_lsm.c	bpf: Allow LSM programs to use bpf spin locks	2020-11-06 08:08:37 -08:00
bpf_struct_ops_types.h	bpf: tcp: Support tcp_congestion_ops in bpf	2020-01-09 08:46:18 -08:00
bpf_struct_ops.c	bpf: Move btf_resolve_size into __btf_resolve_size	2020-08-25 15:37:41 -07:00
btf.c	bpf: Introduce bpf_per_cpu_ptr()	2020-10-02 15:00:49 -07:00
cgroup.c	Merge branch 'work.set_fs' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs	2020-10-22 09:59:21 -07:00
core.c	networking changes for the 5.10 merge window	2020-10-15 18:42:13 -07:00
cpumap.c	bpf, cpumap: Remove rcpu pointer from cpu_map_build_skb signature	2020-09-28 23:30:42 +02:00
devmap.c	bpf: {cpu,dev}map: Change various functions return type from int to void	2020-09-01 15:45:58 +02:00
disasm.c	treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 295	2019-06-05 17:36:38 +02:00
disasm.h	treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 295	2019-06-05 17:36:38 +02:00
dispatcher.c	bpf: Remove bpf_image tree	2020-03-13 12:49:52 -07:00
hashtab.c	bpf: Lift hashtab key_size limit	2020-11-05 20:04:46 -08:00
helpers.c	bpf: Introducte bpf_this_cpu_ptr()	2020-10-02 15:00:49 -07:00
inode.c	Merge git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net	2020-09-22 16:45:34 -07:00
local_storage.c	bpf/local_storage: Fix build without CONFIG_CGROUP	2020-07-25 20:16:36 -07:00
lpm_trie.c	bpf: Add map_meta_equal map ops	2020-08-28 15:41:30 +02:00
Makefile	bpf: Implement bpf_local_storage for inodes	2020-08-25 15:00:04 -07:00
map_in_map.c	bpf: Relax max_entries check for most of the inner map types	2020-08-28 15:41:30 +02:00
map_in_map.h	bpf: Add map_meta_equal map ops	2020-08-28 15:41:30 +02:00
map_iter.c	bpf: Implement link_query callbacks in map element iterators	2020-08-21 14:01:39 -07:00
net_namespace.c	bpf: Add support for forced LINK_DETACH command	2020-08-01 20:38:28 -07:00
offload.c	bpf, offload: Replace bitwise AND by logical AND in bpf_prog_offload_info_fill	2020-02-17 16:53:49 +01:00
percpu_freelist.c	bpf: Use raw_spin_trylock() for pcpu_freelist_push/pop in NMI	2020-10-06 00:04:11 +02:00
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	bpf: Refactor bpf_iter_reg to have separate seq_info member	2020-07-25 20:16:32 -07:00
queue_stack_maps.c	bpf: Add map_meta_equal map ops	2020-08-28 15:41:30 +02:00
reuseport_array.c	bpf, net: Rework cookie generator as per-cpu one	2020-09-30 11:50:35 -07:00
ringbuf.c	bpf: Add map_meta_equal map ops	2020-08-28 15:41:30 +02:00
stackmap.c	bpf: Allow specifying a BTF ID per argument in function protos	2020-09-21 15:00:40 -07:00
syscall.c	bpf: Remove unneeded break	2020-10-19 20:40:21 +02:00
sysfs_btf.c	bpf: Fix sysfs export of empty BTF section	2020-09-21 21:50:24 +02:00
task_iter.c	bpf: Permit cond_resched for some iterators	2020-10-28 14:54:31 -07:00
tnum.c	bpf: Verifier, do explicit ALU32 bounds tracking	2020-03-30 14:59:53 -07:00
trampoline.c	bpf: Move prog->aux->linked_prog and trampoline into bpf_link on attach	2020-09-29 13:09:23 -07:00
verifier.c	bpf: Allow LSM programs to use bpf spin locks	2020-11-06 08:08:37 -08:00