[PATCH v4 1/7] asm-generic: ticket-lock: New generic ticket-based spinlock

[Guo Ren]

Reviewed-by: Guo Ren <guoren at kernel.org>

On Wed, May 4, 2022 at 7:57 PM Heiko Stübner <heiko at sntech.de> wrote:
>
> Am Samstag, 30. April 2022, 17:36:20 CEST schrieb Palmer Dabbelt:
> > From: Peter Zijlstra <peterz at infradead.org>
> >
> > This is a simple, fair spinlock.  Specifically it doesn't have all the
> > subtle memory model dependencies that qspinlock has, which makes it more
> > suitable for simple systems as it is more likely to be correct.  It is
> > implemented entirely in terms of standard atomics and thus works fine
> > without any arch-specific code.
> >
> > This replaces the existing asm-generic/spinlock.h, which just errored
> > out on SMP systems.
> >
> > Signed-off-by: Peter Zijlstra (Intel) <peterz at infradead.org>
> > Signed-off-by: Palmer Dabbelt <palmer at rivosinc.com>
>
> on riscv64+riscv32 qemu, beaglev and d1-nezha
>
> Tested-by: Heiko Stuebner <heiko at sntech.de>
>
>


-- 
Best Regards
 Guo Ren

ML: https://lore.kernel.org/linux-csky/