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e50f06ce2d
Some atomics can be implemented in several different ways, e.g. FULL/ACQUIRE/RELEASE ordered atomics can be implemented in terms of RELAXED atomics, and ACQUIRE/RELEASE/RELAXED can be implemented in terms of FULL ordered atomics. Other atomics are optional, and don't exist in some configurations (e.g. not all architectures implement the 128-bit cmpxchg ops). Subsequent patches will require that architectures define a preprocessor symbol for any atomic (or ordering variant) which is optional. This will make the fallback ifdeffery more robust, and simplify future changes. Add the required definitions to arch/m68k. Signed-off-by: Mark Rutland <mark.rutland@arm.com> Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org> Reviewed-by: Kees Cook <keescook@chromium.org> Link: https://lore.kernel.org/r/20230605070124.3741859-9-mark.rutland@arm.com |
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68000 | ||
amiga | ||
apollo | ||
atari | ||
bvme6000 | ||
coldfire | ||
configs | ||
emu | ||
fpsp040 | ||
hp300 | ||
ifpsp060 | ||
include | ||
kernel | ||
lib | ||
mac | ||
math-emu | ||
mm | ||
mvme16x | ||
mvme147 | ||
q40 | ||
sun3 | ||
sun3x | ||
tools/amiga | ||
virt | ||
install.sh | ||
Kbuild | ||
Kconfig | ||
Kconfig.bus | ||
Kconfig.cpu | ||
Kconfig.debug | ||
Kconfig.devices | ||
Kconfig.machine | ||
Makefile |