Messages in this thread | | | Date | Mon, 1 Apr 2024 21:18:42 -0700 | From | "Paul E. McKenney" <> | Subject | Re: [PATCH RFC cmpxchg 2/8] sparc: Emulate one-byte and two-byte cmpxchg |
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On Tue, Apr 02, 2024 at 05:11:38AM +0100, Al Viro wrote: > On Tue, Apr 02, 2024 at 04:37:53AM +0100, Al Viro wrote: > > On Tue, Apr 02, 2024 at 01:07:58AM +0100, Al Viro wrote: > > > > > It does, IIRC. > > > > > > > Would you like to do that patch? If so, I would be happy to drop mine > > > > in favor of yours. If not, could I please have your Signed-off-by so > > > > I can do the Co-developed-by dance? > > > > > > Will do once I dig my way from under the pile of mail (sick for a week > > > and subscribed to l-k, among other lists)... > > > > FWIW, parisc is in the same situation - atomics-by-cached-spinlocks. > > 've a candidate branch, will post if it survives build... > > Seems to survive. See > git://git.kernel.org:/pub/scm/linux/kernel/git/viro/vfs.git misc.cmpxchg > > Completely untested; builds on several configs, but that's it. > Al Viro (8): > sparc32: make __cmpxchg_u32() return u32 > sparc32: make the first argument of __cmpxchg_u64() volatile u64 * > sparc32: unify __cmpxchg_u{32,64} > sparc32: add __cmpxchg_u{8,16}() and teach __cmpxchg() to handle those sizes > parisc: __cmpxchg_u32(): lift conversion into the callers > parisc: unify implementations of __cmpxchg_u{8,32,64} > parisc: add missing export of __cmpxchg_u8() > parisc: add u16 support to cmpxchg() > > arch/parisc/include/asm/cmpxchg.h | 16 ++++++------ > arch/parisc/kernel/parisc_ksyms.c | 2 ++ > arch/parisc/lib/bitops.c | 52 ++++++++++++------------------------- > arch/sparc/include/asm/cmpxchg_32.h | 11 +++++--- > arch/sparc/lib/atomic32.c | 45 ++++++++++++++------------------ > 5 files changed, 55 insertions(+), 71 deletions(-) > > Individual patches in followups.
Very good, thank you! I will take yours in place of mine on my next rebase.
Thanx, Paul
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