Re: [PATCH] Drivers: hv: vmbus: Deferring per cpu tasks

[Srivatsa S. Bhat]

On Fri, Jul 26, 2024 at 12:01:33AM +0000, Dexuan Cui wrote:
> > From: Saurabh Singh Sengar <ssengar@xxxxxxxxxxxxxxxxxxx>
> > Sent: Thursday, July 25, 2024 8:35 AM
> > Subject: Re: [PATCH] Drivers: hv: vmbus: Deferring per cpu tasks
> 
> Without the patch, I think the current CPU uses IPIs to let the other
> CPUs, one by one,  run the function calls, and synchronously waits
> for the function calls to finish.
> 
> IMO the patch is not "Deferring per cpu tasks". "Defer" means "let it
> happen later". Here it schedules work items to different CPUs, and
> the work items immediately start to run on these CPUs.
> 
> I would suggest a more accurate subject:
> Drivers: hv: vmbus: Run hv_synic_init() concurrently
> 

It would be great to call out the "why" as well in the title,
something like:

Drivers: hv: vmbus: Speed-up booting by running hv_synic_init() concurrently

Regards,
Srivatsa
Microsoft Linux Systems Group