On Mon, Oct 21, 2019 at 06:52:16PM +0800, Yunfeng Ye wrote: > In cases like suspend-to-disk and suspend-to-ram, a large number of CPU > cores need to be shut down. At present, the CPU hotplug operation is > serialised, and the CPU cores can only be shut down one by one. In this > process, if PSCI affinity_info() does not return LEVEL_OFF quickly, > cpu_psci_cpu_kill() needs to wait for 10ms. If hundreds of CPU cores > need to be shut down, it will take a long time. > > Normally, there is no need to wait 10ms in cpu_psci_cpu_kill(). So > change the wait interval from 10 ms to max 1 ms and use usleep_range() > instead of msleep() for more accurate timer. > > In addition, reducing the time interval will increase the messages > output, so remove the "Retry ..." message, instead, track time and > output to the the successful message.
Reviewed-by: Sudeep Holla <sudeep.ho...@arm.com> -- Regards, Sudeep
