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SubjectRe: [PATCH V9 16/24] LoongArch: Add misc common routines
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On Sat, 30 Apr 2022 03:41:59 PDT (-0700), Arnd Bergmann wrote:
> On Sat, Apr 30, 2022 at 12:00 PM Huacai Chen <chenhuacai@gmail.com> wrote:
>>
>> On Sat, Apr 30, 2022 at 5:50 PM Arnd Bergmann <arnd@arndb.de> wrote:
>> >
>> > On Sat, Apr 30, 2022 at 11:05 AM Huacai Chen <chenhuacai@loongson.cn> wrote:
>> >
>> > > +unsigned long __xchg_small(volatile void *ptr, unsigned long val, unsigned int size)
>> > > +{
>> > > + u32 old32, mask, temp;
>> > > + volatile u32 *ptr32;
>> > > + unsigned int shift;
>> > > +
>> > > + /* Check that ptr is naturally aligned */
>> >
>> > As discussed, please remove this function and all the references to it.
>>
>> It seems that "generic ticket spinlock" hasn't been merged in 5.18?
>
> No, but we can merge it together with the loongarch architecture for 5.19.
>
> I suggested you coordinate with Guo Ren and Palmer Dabbelt about how
> to best merge it. The latest version was pasted two weeks ago [1], and
> it sounds like there are only minor issues to work out and that I can merge
> v4 into the asm-generic tree before merging the loongarch code in the
> same place.
>
> Arnd
>
> [1] https://lore.kernel.org/lkml/20220414220214.24556-1-palmer@rivosinc.com/

I can just send another version, IIRC it was just that discussion about
the memory barrier and there's already prototype code so it shouldn't be
too bad. I was hoping to do it sooner, sorry.

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