linux/tools
Andrii Nakryiko f760d05379 libbpf: Provide barrier() and barrier_var() in bpf_helpers.h
Add barrier() and barrier_var() macros into bpf_helpers.h to be used by
end users. While a bit advanced and specialized instruments, they are
sometimes indispensable. Instead of requiring each user to figure out
exact asm volatile incantations for themselves, provide them from
bpf_helpers.h.

Also remove conflicting definitions from selftests. Some tests rely on
barrier_var() definition being nothing, those will still work as libbpf
does the #ifndef/#endif guarding for barrier() and barrier_var(),
allowing users to redefine them, if necessary.

Signed-off-by: Andrii Nakryiko <andrii@kernel.org>
Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>
Link: https://lore.kernel.org/bpf/20220509004148.1801791-8-andrii@kernel.org
2022-05-09 17:15:32 +02:00
..
accounting
arch x86/tsx: Disable TSX development mode at boot 2022-04-11 09:58:40 +02:00
bootconfig
bpf bpftool, musl compat: Replace sys/fcntl.h by fcntl.h 2022-04-25 23:24:28 +02:00
build tools build: Filter out options and warnings not supported by clang 2022-04-09 12:34:16 -03:00
cgroup tools/cgroup/slabinfo: update to work with struct slab 2022-02-21 11:34:49 +01:00
counter kbuild: replace $(if A,A,B) with $(or A,B) 2022-02-15 12:25:56 +09:00
debugging
edid
firewire
firmware
gpio kbuild: replace $(if A,A,B) with $(or A,B) 2022-02-15 12:25:56 +09:00
hv kbuild: replace $(if A,A,B) with $(or A,B) 2022-02-15 12:25:56 +09:00
iio Kbuild updates for v5.18 2022-03-31 11:59:03 -07:00
include Merge https://git.kernel.org/pub/scm/linux/kernel/git/bpf/bpf-next 2022-04-27 17:09:32 -07:00
io_uring
kvm/kvm_stat
laptop
leds
lib libbpf: Provide barrier() and barrier_var() in bpf_helpers.h 2022-05-09 17:15:32 +02:00
memory-model
objtool objtool: Fix SLS validation for kcov tail-call replacement 2022-04-05 10:24:40 +02:00
pci kbuild: replace $(if A,A,B) with $(or A,B) 2022-02-15 12:25:56 +09:00
pcmcia
perf perf bench: Fix numa bench to fix usage of affinity for machines with #CPUs > 1K 2022-04-14 09:15:10 -03:00
power Kbuild updates for v5.18 2022-03-31 11:59:03 -07:00
rcu
scripts Kbuild updates for v5.18 2022-03-31 11:59:03 -07:00
spi kbuild: replace $(if A,A,B) with $(or A,B) 2022-02-15 12:25:56 +09:00
testing libbpf: Provide barrier() and barrier_var() in bpf_helpers.h 2022-05-09 17:15:32 +02:00
thermal/tmon
time
tracing Kbuild updates for v5.18 2022-03-31 11:59:03 -07:00
usb kbuild: replace $(if A,A,B) with $(or A,B) 2022-02-15 12:25:56 +09:00
virtio tools/virtio: compile with -pthread 2022-03-28 16:52:59 -04:00
vm tools/vm/page_owner_sort.c: remove -c option 2022-04-01 11:46:09 -07:00
wmi
Makefile