Toke Høiland-Jørgensen 3aac1ead5e bpf: Move prog->aux->linked_prog and trampoline into bpf_link on attach ... In preparation for allowing multiple attachments of freplace programs, move the references to the target program and trampoline into the bpf_tracing_link structure when that is created. To do this atomically, introduce a new mutex in prog->aux to protect writing to the two pointers to target prog and trampoline, and rename the members to make it clear that they are related. With this change, it is no longer possible to attach the same tracing program multiple times (detaching in-between), since the reference from the tracing program to the target disappears on the first attach. However, since the next patch will let the caller supply an attach target, that will also make it possible to attach to the same place multiple times. Signed-off-by: Toke Høiland-Jørgensen <toke@redhat.com> Signed-off-by: Alexei Starovoitov <ast@kernel.org> Acked-by: Andrii Nakryiko <andriin@fb.com> Link: https://lore.kernel.org/bpf/160138355059.48470.2503076992210324984.stgit@toke.dk		2020-09-29 13:09:23 -07:00
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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, x64: rework pro/epilogue and tailcall handling in JIT	2020-09-17 19:55:30 -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: Bump iter seq size to support BTF representation of large data structures	2020-09-28 18:26:58 -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: Change bpf_sk_storage_*() to accept ARG_PTR_TO_BTF_ID_SOCK_COMMON	2020-09-25 13:58:01 -07:00
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: Move prog->aux->linked_prog and trampoline into bpf_link on attach	2020-09-29 13:09:23 -07:00
cgroup.c	treewide: Use fallthrough pseudo-keyword	2020-08-23 17:36:59 -05:00
core.c	bpf: Move prog->aux->linked_prog and trampoline into bpf_link on attach	2020-09-29 13:09:23 -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	Merge git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net	2020-09-22 16:45:34 -07:00
helpers.c	bpf: Add bpf_snprintf_btf helper	2020-09-28 18:26:58 -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: Dont iterate over possible CPUs with interrupts disabled	2020-02-24 16:18:20 -08:00
percpu_freelist.h	treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 206	2019-05-30 11:29:53 -07:00
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: Add map_meta_equal map ops	2020-08-28 15:41:30 +02:00
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: Move prog->aux->linked_prog and trampoline into bpf_link on attach	2020-09-29 13:09:23 -07:00
sysfs_btf.c	bpf: Support llvm-objcopy for vmlinux BTF	2020-03-19 12:32:38 +01:00
task_iter.c	bpf: Avoid iterating duplicated files for task_file iterator	2020-09-02 16:40:33 +02:00
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: Move prog->aux->linked_prog and trampoline into bpf_link on attach	2020-09-29 13:09:23 -07:00