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linux/kernel/bpf
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David Miller 099bfaa731 bpf/stackmap: Dont trylock mmap_sem with PREEMPT_RT and interrupts disabled 
In a RT kernel down_read_trylock() cannot be used from NMI context and
up_read_non_owner() is another problematic issue.

So in such a configuration, simply elide the annotated stackmap and
just report the raw IPs.

In the longer term, it might be possible to provide a atomic friendly
versions of the page cache traversal which will at least provide the info
if the pages are resident and don't need to be paged in.

[ tglx: Use IS_ENABLED() to avoid the #ifdeffery, fixup the irq work
  	callback and add a comment ]

Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
Link: https://lore.kernel.org/bpf/20200224145644.708960317@linutronix.de
2020-02-24 16:20:10 -08:00
..
arraymap.c
bpf: Add lookup and update batch ops to arraymap
2020-01-15 14:00:35 -08:00
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
treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 206
2019-05-30 11:29:53 -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: Reuse log from btf_prase_vmlinux() in btf_struct_ops_init()
2020-01-29 16:40:54 +01:00
btf.c
bpf: Make btf_check_func_type_match() static
2020-02-11 00:22:47 +01:00
cgroup.c
Merge git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net
2020-01-09 12:13:43 -08:00
core.c
bpf: Add BPF_FUNC_jiffies64
2020-01-22 16:30:10 -08:00
cpumap.c
xdp: Make cpumap flush_list common for all map instances
2019-12-19 21:09:43 -08:00
devmap.c
bpf, xdp: Remove no longer required rcu_read_{un}lock()
2020-01-27 11:16:25 +01:00
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: Allow to resolve bpf trampoline and dispatcher in unwind
2020-01-25 07:12:40 -08:00
hashtab.c
bpf: Prepare hashtab locking for PREEMPT_RT
2020-02-24 16:20:10 -08:00
helpers.c
bpf: Add BPF_FUNC_jiffies64
2020-01-22 16:30:10 -08:00
inode.c
Merge branch 'merge.nfs-fs_parse.1' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs
2020-02-08 13:26:41 -08:00
local_storage.c
Merge git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net
2019-12-22 09:54:33 -08:00
lpm_trie.c
bpf, lpm: Make locking RT friendly
2020-02-24 16:20:10 -08:00
Makefile
bpf: Introduce BPF_PROG_TYPE_STRUCT_OPS
2020-01-09 08:46:18 -08:00
map_in_map.c
bpf: Introduce BPF_MAP_TYPE_STRUCT_OPS
2020-01-09 08:46:18 -08:00
map_in_map.h
treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 206
2019-05-30 11:29:53 -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
queue_stack_maps.c
bpf: move memory size checks to bpf_map_charge_init()
2019-05-31 16:52:56 -07:00
reuseport_array.c
net: Generate reuseport group ID on group creation
2020-02-21 22:29:45 +01:00
stackmap.c
bpf/stackmap: Dont trylock mmap_sem with PREEMPT_RT and interrupts disabled
2020-02-24 16:20:10 -08:00
syscall.c
bpf: Replace open coded recursion prevention in sys_bpf()
2020-02-24 16:20:10 -08:00
sysfs_btf.c
btf: fix return value check in btf_vmlinux_init()
2019-08-15 22:18:17 -07:00
tnum.c
bpf: Fix incorrect verifier simulation of ARSH under ALU32
2020-01-15 13:39:59 -08:00
trampoline.c
bpf: Use migrate_disable/enabe() in trampoline code.
2020-02-24 16:20:09 -08:00
verifier.c
bpf: Enforce preallocation for instrumentation programs on RT
2020-02-24 16:12:19 -08:00
xskmap.c
xsk: Make xskmap flush_list common for all map instances
2019-12-19 21:09:43 -08:00