Re: [PATCH v3] Drivers: hv: vmbus: Optimize boot time by concurrent execution of hv_synic_init()

[Wei Liu]

On Wed, Jul 31, 2024 at 09:55:36PM -0700, Saurabh Sengar wrote:
> Currently on a very large system with 1780 CPUs, hv_acpi_init() takes
> around 3 seconds to complete. This is because of sequential synic
> initialization for each CPU performed by hv_synic_init().
> 
> Schedule these tasks parallelly so that each CPU executes hv_synic_init()
> in parallel to take full advantage of multiple CPUs.
> 
> This solution saves around 2 seconds of boot time on a 1780 CPU system,
> which is around 66% improvement in the existing logic.
> 
> Signed-off-by: Saurabh Sengar <ssengar@xxxxxxxxxxxxxxxxxxx>
> Reviewed-by: Nuno Das Neves <nunodasneves@xxxxxxxxxxxxxxxxxxx>
> Reviewed-by: Srivatsa S. Bhat (Microsoft) <srivatsa@xxxxxxxxxxxxx>
> Reviewed-by: Dexuan Cui <decui@xxxxxxxxxxxxx>

Applied to hyperv-next. Thanks.