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Hou Tao b6ec79518e bpf, x86: Remove unnecessary handling of BPF_SUB atomic op 
According to the LLVM commit (https://reviews.llvm.org/D72184),
sync_fetch_and_sub() is implemented as a negation followed by
sync_fetch_and_add(), so there will be no BPF_SUB op, thus just
remove it. BPF_SUB is also rejected by the verifier anyway.

Signed-off-by: Hou Tao <houtao1@huawei.com>
Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>
Acked-by: Brendan Jackman <jackmanb@google.com>
Link: https://lore.kernel.org/bpf/20220127083240.1425481-1-houtao1@huawei.com
2022-01-27 22:47:05 +01:00
..
alpha
Merge branch 'signal-for-v5.17' of git://git.kernel.org/pub/scm/linux/kernel/git/ebiederm/user-namespace
2022-01-17 05:49:30 +02:00
arc
Merge tag 'kbuild-v5.17' of git://git.kernel.org/pub/scm/linux/kernel/git/masahiroy/linux-kbuild
2022-01-19 11:15:19 +02:00
arm
Merge tag 'kbuild-v5.17' of git://git.kernel.org/pub/scm/linux/kernel/git/masahiroy/linux-kbuild
2022-01-19 11:15:19 +02:00
arm64
Merge branch 'akpm' (patches from Andrew)
2022-01-20 10:41:01 +02:00
csky
Merge branch 'signal-for-v5.17' of git://git.kernel.org/pub/scm/linux/kernel/git/ebiederm/user-namespace
2022-01-17 05:49:30 +02:00
h8300
Merge tag 'kbuild-v5.17' of git://git.kernel.org/pub/scm/linux/kernel/git/masahiroy/linux-kbuild
2022-01-19 11:15:19 +02:00
hexagon
Merge branch 'signal-for-v5.17' of git://git.kernel.org/pub/scm/linux/kernel/git/ebiederm/user-namespace
2022-01-17 05:49:30 +02:00
ia64
Merge branch 'akpm' (patches from Andrew)
2022-01-20 10:41:01 +02:00
m68k
Merge branch 'signal-for-v5.17' of git://git.kernel.org/pub/scm/linux/kernel/git/ebiederm/user-namespace
2022-01-17 05:49:30 +02:00
microblaze
Merge tag 'kbuild-v5.17' of git://git.kernel.org/pub/scm/linux/kernel/git/masahiroy/linux-kbuild
2022-01-19 11:15:19 +02:00
mips
Merge branch 'akpm' (patches from Andrew)
2022-01-20 10:41:01 +02:00
nds32
Merge tag 'kbuild-v5.17' of git://git.kernel.org/pub/scm/linux/kernel/git/masahiroy/linux-kbuild
2022-01-19 11:15:19 +02:00
nios2
Merge tag 'kbuild-v5.17' of git://git.kernel.org/pub/scm/linux/kernel/git/masahiroy/linux-kbuild
2022-01-19 11:15:19 +02:00
openrisc
Merge tag 'kbuild-v5.17' of git://git.kernel.org/pub/scm/linux/kernel/git/masahiroy/linux-kbuild
2022-01-19 11:15:19 +02:00
parisc
Merge tag 'kbuild-v5.17' of git://git.kernel.org/pub/scm/linux/kernel/git/masahiroy/linux-kbuild
2022-01-19 11:15:19 +02:00
powerpc
Merge tag 'net-5.17-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net
2022-01-20 10:57:05 +02:00
riscv
Merge branch 'akpm' (patches from Andrew)
2022-01-20 10:41:01 +02:00
s390
Merge tag 'kbuild-v5.17' of git://git.kernel.org/pub/scm/linux/kernel/git/masahiroy/linux-kbuild
2022-01-19 11:15:19 +02:00
sh
Merge tag 'kbuild-v5.17' of git://git.kernel.org/pub/scm/linux/kernel/git/masahiroy/linux-kbuild
2022-01-19 11:15:19 +02:00
sparc
Merge branch 'akpm' (patches from Andrew)
2022-01-20 10:41:01 +02:00
um
Merge tag 'for_linus' of git://git.kernel.org/pub/scm/linux/kernel/git/mst/vhost
2022-01-18 10:05:48 +02:00
x86
bpf, x86: Remove unnecessary handling of BPF_SUB atomic op
2022-01-27 22:47:05 +01:00
xtensa
Merge tag 'kbuild-v5.17' of git://git.kernel.org/pub/scm/linux/kernel/git/masahiroy/linux-kbuild
2022-01-19 11:15:19 +02:00
.gitignore
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Kconfig
Merge branch 'akpm' (patches from Andrew)
2022-01-20 10:41:01 +02:00