From: Mark Rutland <mark.rutland@arm.com>
To: Palmer Dabbelt <palmer@dabbelt.com>
Cc: linux-kernel@vger.kernel.org, will@kernel.org,
boqun.feng@gmail.com, peterz@infradead.org,
aou@eecs.berkeley.edu, Arnd Bergmann <arnd@arndb.de>,
bcain@codeaurora.org, benh@kernel.crashing.org, chris@zankel.net,
dalias@libc.org, davem@davemloft.net, deanbo422@gmail.com,
deller@gmx.de, geert@linux-m68k.org, green.hu@gmail.com,
guoren@kernel.org, ink@jurassic.park.msu.ru,
James.Bottomley@HansenPartnership.com, jcmvbkbc@gmail.com,
jonas@southpole.se, ley.foon.tan@intel.com,
linux@armlinux.org.uk, mattst88@gmail.com, monstr@monstr.eu,
mpe@ellerman.id.au, nickhu@andestech.com, paulus@samba.org,
Paul Walmsley <paul.walmsley@sifive.com>,
rth@twiddle.net, shorne@gmail.com,
stefan.kristiansson@saunalahti.fi, tsbogend@alpha.franken.de,
vgupta@synopsys.com, ysato@users.sourceforge.jp
Subject: Re: [PATCH 28/33] locking/atomic: riscv: move to ARCH_ATOMIC
Date: Mon, 24 May 2021 13:10:34 +0100 [thread overview]
Message-ID: <20210524121034.GG1040@C02TD0UTHF1T.local> (raw)
In-Reply-To: <mhng-4414d6c5-89dd-476a-b08c-ce34d0467781@palmerdabbelt-glaptop>
On Sat, May 22, 2021 at 12:02:45PM -0700, Palmer Dabbelt wrote:
> On Mon, 10 May 2021 02:37:48 PDT (-0700), mark.rutland@arm.com wrote:
> > We'd like all architectures to convert to ARCH_ATOMIC, as once all
> > architectures are converted it will be possible to make significant
> > cleanups to the atomics headers, and this will make it much easier to
> > generically enable atomic functionality (e.g. debug logic in the
> > instrumented wrappers).
> >
> > As a step towards that, this patch migrates riscv to ARCH_ATOMIC. The
> > arch code provides arch_{atomic,atomic64,xchg,cmpxchg}*(), and common
> > code wraps these with optional instrumentation to provide the regular
> > functions.
> >
> > Signed-off-by: Mark Rutland <mark.rutland@arm.com>
> > Cc: Albert Ou <aou@eecs.berkeley.edu>
> > Cc: Boqun Feng <boqun.feng@gmail.com>
> > Cc: Palmer Dabbelt <palmer@dabbelt.com>
> > Cc: Paul Walmsley <paul.walmsley@sifive.com>
> > Cc: Peter Zijlstra <peterz@infradead.org>
> > Cc: Will Deacon <will@kernel.org>
> > ---
> > arch/riscv/Kconfig | 1 +
> > arch/riscv/include/asm/atomic.h | 128 +++++++++++++++++++--------------------
> > arch/riscv/include/asm/cmpxchg.h | 34 +++++------
> > 3 files changed, 82 insertions(+), 81 deletions(-)
[...]
> Reviewed-by: Palmer Dabbelt <palmerdabbelt@google.com>
> Acked-by: Palmer Dabbelt <palmerdabbelt@google.com>
Thanks!
> Sorry this took a bit, I had this put on the slow queue because I thought it
> would conflict with Guo's patch set but from reading the rest of that thread
> it appears this is just supersedes which makes things much simpler.
>
> I'm assuming this would be for 5.14, and you'd be merging it along with the
> prep work?
Yup; the plan is to take the whole series through the tip tree for
v5.14.
I'll post a v2 soon with some minor fixups.
> I don't think we have anything else in the works that would
> require atomic changes for 5.14 yet so that seems OK for now, but it'd be
> nice to have some shared tag I could pull in both so I can test this and in
> case we have more to put on top of it. I'm fine waiting until something
> comes up if that's a headache on your end, though.
I think we can arrange a stable tag soon.
The Kbuild test robot is still finding a few edge cases with the
preprocessor glue on a few architectures, so my branch isn't stable yet,
but I think the core bit is solid, so if you wanted to test you should
be able to fetch my branch from:
git://git.kernel.org/pub/scm/linux/kernel/git/mark/linux.git atomics/arch-atomic
Thanks,
Mark.
next prev parent reply other threads:[~2021-05-24 12:10 UTC|newest]
Thread overview: 57+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-05-10 9:37 [PATCH 00/33] locking/atomic: convert all architectures to ARCH_ATOMIC Mark Rutland
2021-05-10 9:37 ` [PATCH 01/33] locking/atomic: make ARCH_ATOMIC a Kconfig symbol Mark Rutland
2021-05-10 9:37 ` [PATCH 02/33] locking/atomic: net: use linux/atomic.h for xchg & cmpxchg Mark Rutland
2021-05-10 9:37 ` [PATCH 03/33] locking/atomic: h8300: use asm-generic exclusively Mark Rutland
2021-05-10 9:37 ` [PATCH 04/33] locking/atomic: microblaze: " Mark Rutland
2021-05-10 9:37 ` [PATCH 05/33] locking/atomic: openrisc: avoid asm-generic/atomic.h Mark Rutland
2021-05-13 21:44 ` Stafford Horne
2021-05-14 10:17 ` Mark Rutland
2021-05-10 9:37 ` [PATCH 06/33] locking/atomic: atomic: remove stale comments Mark Rutland
2021-05-10 9:37 ` [PATCH 07/33] locking/atomic: atomic: remove redundant include Mark Rutland
2021-05-10 9:37 ` [PATCH 08/33] locking/atomic: atomic: simplify ifdeffery Mark Rutland
2021-05-10 9:37 ` [PATCH 09/33] locking/atomic: atomic: support ARCH_ATOMIC Mark Rutland
2021-05-10 9:37 ` [PATCH 10/33] locking/atomic: atomic64: " Mark Rutland
2021-05-10 9:37 ` [PATCH 11/33] locking/atomic: cmpxchg: make `generic` a prefix Mark Rutland
2021-05-11 9:29 ` Geert Uytterhoeven
2021-05-10 9:37 ` [PATCH 12/33] locking/atomic: cmpxchg: support ARCH_ATOMIC Mark Rutland
2021-05-10 9:37 ` [PATCH 13/33] locking/atomic: alpha: move to ARCH_ATOMIC Mark Rutland
2021-05-10 9:37 ` [PATCH 14/33] locking/atomic: arc: " Mark Rutland
2021-05-10 14:57 ` Mark Rutland
2021-05-10 19:48 ` Vineet Gupta
2021-05-10 9:37 ` [PATCH 15/33] locking/atomic: arm: " Mark Rutland
2021-05-13 10:49 ` Mark Rutland
2021-05-10 9:37 ` [PATCH 16/33] locking/atomic: csky: " Mark Rutland
2021-05-10 13:27 ` Guo Ren
2021-05-10 9:37 ` [PATCH 17/33] locking/atomic: h8300: " Mark Rutland
2021-05-10 9:37 ` [PATCH 18/33] locking/atomic: hexagon: " Mark Rutland
2021-05-10 9:37 ` [PATCH 19/33] locking/atomic: ia64: " Mark Rutland
2021-05-10 9:37 ` [PATCH 20/33] locking/atomic: m68k: " Mark Rutland
2021-05-11 9:27 ` Geert Uytterhoeven
2021-05-11 10:00 ` Mark Rutland
2021-05-11 10:27 ` Geert Uytterhoeven
2021-05-12 14:15 ` Greg Ungerer
2021-05-12 16:33 ` Mark Rutland
2021-05-10 9:37 ` [PATCH 21/33] locking/atomic: microblaze: " Mark Rutland
2021-05-10 9:37 ` [PATCH 22/33] locking/atomic: mips: " Mark Rutland
2021-05-10 9:37 ` [PATCH 23/33] locking/atomic: nds32: " Mark Rutland
2021-05-10 9:37 ` [PATCH 24/33] locking/atomic: nios2: " Mark Rutland
2021-05-10 9:37 ` [PATCH 25/33] locking/atomic: openrisc: " Mark Rutland
2021-05-15 21:47 ` Stafford Horne
2021-05-10 9:37 ` [PATCH 26/33] locking/atomic: parisc: " Mark Rutland
2021-05-10 9:37 ` [PATCH 27/33] locking/atomic: powerpc: " Mark Rutland
2021-05-11 9:16 ` Mark Rutland
2021-05-11 9:57 ` Mark Rutland
2021-05-10 9:37 ` [PATCH 28/33] locking/atomic: riscv: " Mark Rutland
2021-05-22 19:02 ` Palmer Dabbelt
2021-05-24 12:10 ` Mark Rutland [this message]
2021-05-10 9:37 ` [PATCH 29/33] locking/atomic: sh: " Mark Rutland
2021-05-10 9:37 ` [PATCH 30/33] locking/atomic: sparc: " Mark Rutland
2021-05-10 9:37 ` [PATCH 31/33] locking/atomic: xtensa: " Mark Rutland
2021-05-10 14:19 ` Max Filippov
2021-05-10 9:37 ` [PATCH 32/33] locking/atomic: delete !ARCH_ATOMIC remnants Mark Rutland
2021-05-11 9:30 ` Geert Uytterhoeven
2021-05-10 9:37 ` [PATCH 33/33] locking/atomics: atomic-instrumented: simplify ifdeffery Mark Rutland
2021-05-10 14:56 ` [PATCH 00/33] locking/atomic: convert all architectures to ARCH_ATOMIC Arnd Bergmann
2021-05-11 9:27 ` Mark Rutland
2021-05-12 7:28 ` Peter Zijlstra
2021-05-12 7:49 ` Arnd Bergmann
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