On 7/24/2024 10:26 PM, Saurabh Sengar wrote: > Currently on a very large system with 1780 CPUs, hv_acpi_init takes > around 3 seconds to complete for all the CPUs. This is because of > sequential synic initialization for each CPU. > > Defer these tasks so that each CPU executes hv_acpi_init in parallel > to take full advantage of multiple CPUs. I think you mean hv_synic_init() here, not hv_acpi_init()? > > This solution saves around 2 seconds of boot time on a 1780 CPU system, > that around 66% improvement in the existing logic. > > Signed-off-by: Saurabh Sengar <ssengar@xxxxxxxxxxxxxxxxxxx> > --- > drivers/hv/vmbus_drv.c | 33 ++++++++++++++++++++++++++++++--- > 1 file changed, 30 insertions(+), 3 deletions(-) > LGTM otherwise. Reviewed-by: Nuno Das Neves <nunodasneves@xxxxxxxxxxxxxxxxxxx>
