On Mon, May 11, 2020 at 09:41:32PM +0100, Will Deacon wrote: > Hi folks, > > (trimmed CC list since v4 since this is largely just a rebase) > > This is version five of the READ_ONCE() codegen improvement series that > I've previously posted here: > > RFC: https://lore.kernel.org/lkml/[email protected] > v2: https://lore.kernel.org/lkml/[email protected] > v3: https://lore.kernel.org/lkml/[email protected] > v4: https://lore.kernel.org/lkml/[email protected] > > The main change since v4 is that this is now based on top of the KCSAN > changes queued in -tip (locking/kcsan) and therefore contains the patches > necessary to avoid breaking sparc32 as well as some cleanups to > consolidate {READ,WRITE}_ONCE() and data_race(). > > Other changes include: > > * Treat 'char' as distinct from 'signed char' and 'unsigned char' for > __builtin_types_compatible_p() > > * Add a compile-time assertion that the argument to READ_ONCE_NOCHECK() > points at something the same size as 'unsigned long' > > I'm happy for all of this to go via -tip, or I can take it via arm64.
Looks good to me; Thanks! Acked-by: Peter Zijlstra (Intel) <[email protected]>
