[PATCH 3/3] riscv: Allow to enable PREEMPT_RT.

[Palmer Dabbelt]

On Tue, 17 Sep 2024 03:44:09 PDT (-0700), bigeasy at linutronix.de wrote:
> On 2024-09-06 11:48:03 [-0700], Palmer Dabbelt wrote:
>> I don't have a test setup yet, but I figure it's a new feature so I'll just
>> flip it on as a config post-rc1.  Presumably this just works in the QEMU
>> virt board, or is there some wizardry I'll need to copy?
>
> I don't think you want to enable it by default for everyone. The riscv
> defconfig sets CONFIG_PREEMPT_NONE=y by default. For testing you need to
> flip this to CONFIG_PREEMPT_RT=y and since CONFIG_EXPERT=y is already
> set this option is available.
> And yes, it works on the virt board and there is no wizardry needed ;)

Sorry I missed this.  Just in case anyone's curious: I'm not flipping it 
on by default or anything, just adding a CONFIG_PREEMPT_RT=y 
configuration to the list of things I test before pushing to 
for-next or fixes.

>
> Sebastian