diff options
author | Mark Rutland <mark.rutland@arm.com> | 2021-05-25 15:02:00 +0100 |
---|---|---|
committer | Peter Zijlstra <peterz@infradead.org> | 2021-05-26 13:20:49 +0200 |
commit | 9be85de97786a75f62080de1c0c13656f65cba84 (patch) | |
tree | fda5463211f1e92135081ba872293f7ebad868e4 /arch/x86 | |
parent | a82adc7650044b5555d65078bda07866efa4a73d (diff) | |
download | linux-9be85de97786a75f62080de1c0c13656f65cba84.tar.bz2 |
locking/atomic: make ARCH_ATOMIC a Kconfig symbol
Subsequent patches will move architectures over to the ARCH_ATOMIC API,
after preparing the asm-generic atomic implementations to function with
or without ARCH_ATOMIC.
As some architectures use the asm-generic implementations exclusively
(and don't have a local atomic.h), and to avoid the risk that
ARCH_ATOMIC isn't defined in some cases we expect, let's make the
ARCH_ATOMIC macro a Kconfig symbol instead, so that we can guarantee it
is consistently available where needed.
There should be no functional change as a result of this patch.
Signed-off-by: Mark Rutland <mark.rutland@arm.com>
Cc: Boqun Feng <boqun.feng@gmail.com>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Will Deacon <will@kernel.org>
Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Link: https://lore.kernel.org/r/20210525140232.53872-2-mark.rutland@arm.com
Diffstat (limited to 'arch/x86')
-rw-r--r-- | arch/x86/Kconfig | 1 | ||||
-rw-r--r-- | arch/x86/include/asm/atomic.h | 2 |
2 files changed, 1 insertions, 2 deletions
diff --git a/arch/x86/Kconfig b/arch/x86/Kconfig index 0045e1b44190..11a27563033d 100644 --- a/arch/x86/Kconfig +++ b/arch/x86/Kconfig @@ -58,6 +58,7 @@ config X86 # select ACPI_LEGACY_TABLES_LOOKUP if ACPI select ACPI_SYSTEM_POWER_STATES_SUPPORT if ACPI + select ARCH_ATOMIC select ARCH_32BIT_OFF_T if X86_32 select ARCH_CLOCKSOURCE_INIT select ARCH_ENABLE_HUGEPAGE_MIGRATION if X86_64 && HUGETLB_PAGE && MIGRATION diff --git a/arch/x86/include/asm/atomic.h b/arch/x86/include/asm/atomic.h index f732741ad7c7..5e754e895767 100644 --- a/arch/x86/include/asm/atomic.h +++ b/arch/x86/include/asm/atomic.h @@ -269,6 +269,4 @@ static __always_inline int arch_atomic_fetch_xor(int i, atomic_t *v) # include <asm/atomic64_64.h> #endif -#define ARCH_ATOMIC - #endif /* _ASM_X86_ATOMIC_H */ |