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72c3dd8207
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John David Anglin 72c3dd8207 parisc: Add lws_atomic_xchg and lws_atomic_store syscalls 
This patch adds two new LWS routines - lws_atomic_xchg and lws_atomic_store.

These are simpler than the CAS routines.  Currently, we use the CAS
routines for atomic stores.  This is inefficient since it requires
both winning the spinlock and a successful CAS operation.

Change has been tested on c8000 and rp3440.

In v2, I moved the code to disble/enable page faults inside the spinlocks.

Signed-off-by: John David Anglin <dave.anglin@bell.net>
Signed-off-by: Helge Deller <deller@gmx.de>
2022-01-07 01:29:21 +01:00
..
alpha futex: Wireup futex_waitv syscall 2021-11-25 14:26:12 +01:00
arc Add linux/cacheflush.h 2021-11-17 10:36:15 -05:00
arm Another EFI fix for v5.16 2021-12-27 08:58:35 -08:00
arm64 Another EFI fix for v5.16 2021-12-27 08:58:35 -08:00
csky csky: fix typo of fpu config macro 2021-12-08 14:15:54 +08:00
h8300 Kbuild updates for v5.16 2021-11-08 09:15:45 -08:00
hexagon hexagon: ignore vmlinux.lds 2021-11-20 10:35:54 -08:00
ia64 futex: Wireup futex_waitv syscall 2021-11-25 14:26:12 +01:00
m68k asm-generic: syscall table updates 2021-11-25 10:41:28 -08:00
microblaze futex: Wireup futex_waitv syscall 2021-11-25 14:26:12 +01:00
mips - only enable pci_remap_iospace() for Ralink devices 2021-12-19 11:40:11 -08:00
nds32 Add linux/cacheflush.h 2021-11-17 10:36:15 -05:00
nios2 Add linux/cacheflush.h 2021-11-17 10:36:15 -05:00
openrisc Merge branch 'exit-cleanups-for-v5.16' of git://git.kernel.org/pub/scm/linux/kernel/git/ebiederm/user-namespace 2021-11-10 16:15:54 -08:00
parisc parisc: Add lws_atomic_xchg and lws_atomic_store syscalls 2022-01-07 01:29:21 +01:00
powerpc powerpc fixes for 5.16 #5 2021-12-28 11:42:01 -08:00
riscv Another EFI fix for v5.16 2021-12-27 08:58:35 -08:00
s390 s390/entry: fix duplicate tracking of irq nesting level 2021-12-12 18:52:26 +01:00
sh asm-generic: syscall table updates 2021-11-25 10:41:28 -08:00
sparc asm-generic: syscall table updates 2021-11-25 10:41:28 -08:00
um Merge branch 'exit-cleanups-for-v5.16' of git://git.kernel.org/pub/scm/linux/kernel/git/ebiederm/user-namespace 2021-11-10 16:15:54 -08:00
x86 - Use the proper CONFIG symbol in a preprocessor check. 2022-01-02 09:02:54 -08:00
xtensa asm-generic: syscall table updates 2021-11-25 10:41:28 -08:00
.gitignore
Kconfig arch: Add generic Kconfig option indicating page size smaller than 64k 2021-11-27 14:34:41 -08:00