9fa45070a2
As a step to ensuring the atomic* APIs are consistent, switch to fallbacks generated by gen-atomic-fallback.sh. These are checked in rather than generated with Kbuild, since: * This allows inspection of the atomics with git grep and ctags on a pristine tree, which Linus strongly prefers being able to do. * The fallbacks are not affected by machine details or configuration options, so it is not necessary to regenerate them to take these into account. * These are included by files required *very* early in the build process (e.g. for generating bounds.h), and we'd rather not complicate the top-level Kbuild file with dependencies. The new fallback header should be equivalent to the old fallbacks in <linux/atomic.h>, but: * It is formatted a little differently due to scripting ensuring things are more regular than they used to be. * Fallbacks are now expanded in-place as static inline functions rather than macros. * The prototypes for fallbacks are arragned consistently with the return type on a separate line to try to keep to a sensible line length. There should be no functional change as a result of this patch. Signed-off-by: Mark Rutland <mark.rutland@arm.com> Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org> Acked-by: Will Deacon <will.deacon@arm.com> Cc: linux-arm-kernel@lists.infradead.org Cc: catalin.marinas@arm.com Cc: linuxdrivers@attotech.com Cc: dvyukov@google.com Cc: Boqun Feng <boqun.feng@gmail.com> Cc: arnd@arndb.de Cc: aryabinin@virtuozzo.com Cc: glider@google.com Link: http://lkml.kernel.org/r/20180904104830.2975-3-mark.rutland@arm.com Signed-off-by: Ingo Molnar <mingo@kernel.org> |
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