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linux/kernel/bpf
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Kui-Feng Lee 2c4fe44fb0 bpf: Handle show_fdinfo for the parameterized task BPF iterators 
Show information of iterators in the respective files under
/proc/<pid>/fdinfo/.

For example, for a task file iterator with 1723 as the value of tid
parameter, its fdinfo would look like the following lines.

    pos:    0
    flags:  02000000
    mnt_id: 14
    ino:    38
    link_type:      iter
    link_id:        51
    prog_tag:       a590ac96db22b825
    prog_id:        299
    target_name:    task_file
    task_type:      TID
    tid: 1723

This patch add the last three fields.  task_type is the type of the
task parameter.  TID means the iterator visit only the thread
specified by tid.  The value of tid in the above example is 1723.  For
the case of PID task_type, it means the iterator visits only threads
of a process and will show the pid value of the process instead of a
tid.

Signed-off-by: Kui-Feng Lee <kuifeng@fb.com>
Signed-off-by: Andrii Nakryiko <andrii@kernel.org>
Acked-by: Yonghong Song <yhs@fb.com>
Acked-by: Martin KaFai Lau <martin.lau@kernel.org>
Link: https://lore.kernel.org/bpf/20220926184957.208194-4-kuifeng@fb.com
 		2022-09-28 16:30:00 -07:00
..
preload bpf: iterators: Build and use lightweight bootstrap version of bpftool 2022-07-15 12:01:30 -07:00
Kconfig rcu: Make the TASKS_RCU Kconfig option be selected 2022-04-20 16:52:58 -07:00
Makefile bpf: Introduce any context BPF specific memory allocator. 2022-09-05 15:33:05 +02:00
arraymap.c bpf: Support kptrs in percpu arraymap 2022-09-07 11:46:08 -07:00
bloom_filter.c bpf: Compute map_btf_id during build time 2022-04-26 11:35:21 -07:00
bpf_inode_storage.c bpf: Compute map_btf_id during build time 2022-04-26 11:35:21 -07:00
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 bpf: Use this_cpu_{inc|dec|inc_return} for bpf_task_storage_busy 2022-09-01 12:16:12 -07:00
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: Only add BTF IDs for socket security hooks when CONFIG_SECURITY_NETWORK is on 2022-09-01 16:21:14 -07:00
bpf_struct_ops.c bpf: Remove is_valid_bpf_tramp_flags() 2022-07-11 21:04:58 +02:00
bpf_struct_ops_types.h bpf: Add dummy BPF STRUCT_OPS for test purpose 2021-11-01 14:10:00 -07:00
bpf_task_storage.c bpf: Use this_cpu_{inc|dec|inc_return} for bpf_task_storage_busy 2022-09-01 12:16:12 -07:00
btf.c bpf: Tweak definition of KF_TRUSTED_ARGS 2022-09-21 19:25:26 -07:00
cgroup.c Merge https://git.kernel.org/pub/scm/linux/kernel/git/bpf/bpf-next 2022-09-06 23:21:18 +02:00
cgroup_iter.c bpf: Remove useless else if 2022-09-01 14:04:07 -07:00
core.c bpf: use bpf_prog_pack for bpf_dispatcher 2022-09-26 20:40:43 -07:00
cpumap.c bpf: Use bpf_map_area_alloc consistently on bpf map creation 2022-08-10 11:50:43 -07:00
devmap.c bpf: Use bpf_map_area_alloc consistently on bpf map creation 2022-08-10 11:50:43 -07:00
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: use bpf_prog_pack for bpf_dispatcher 2022-09-26 20:40:43 -07:00
hashtab.c bpf: Always use raw spinlock for hash bucket lock 2022-09-21 18:08:54 -07:00
helpers.c bpf: Export bpf_dynptr_get_size() 2022-09-21 17:32:48 -07:00
inode.c bpf: Convert bpf_preload.ko to use light skeleton. 2022-02-10 23:31:51 +01:00
link_iter.c bpf: Add bpf_link iterator 2022-05-10 11:20:45 -07:00
local_storage.c bpf: Use bpf_map_area_alloc consistently on bpf map creation 2022-08-10 11:50:43 -07:00
lpm_trie.c bpf: Use bpf_map_area_alloc consistently on bpf map creation 2022-08-10 11:50:43 -07:00
map_in_map.c bpf: Allow storing unreferenced kptr in map 2022-04-25 17:31:35 -07:00
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: Check whether or not node is NULL before free it in free_bulk 2022-09-20 08:06:27 -07:00
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: Simplify code by using for_each_cpu_wrap() 2022-09-10 16:18:55 -07:00
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: 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: Add bpf_user_ringbuf_drain() helper 2022-09-21 16:24:58 -07:00
stackmap.c bpf: Compute map_btf_id during build time 2022-04-26 11:35:21 -07:00
syscall.c bpf: Prevent bpf program recursion for raw tracepoint probes 2022-09-21 18:05:44 -07:00
sysfs_btf.c bpf: Load and verify kernel module BTFs 2020-11-10 15:25:53 -08:00
task_iter.c bpf: Handle show_fdinfo for the parameterized task BPF iterators 2022-09-28 16:30:00 -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: Enforce W^X for bpf trampoline 2022-09-26 20:40:43 -07:00
verifier.c btf: Allow dynamic pointer parameters in kfuncs 2022-09-21 17:32:48 -07:00