Thanks for your review. > -----Original Message----- > From: Sun York-R58495 > Sent: Friday, January 16, 2015 1:09 AM > To: Wang Dongsheng-B40534; Wood Scott-B07421; Li Yang-Leo-R58472 > Cc: linuxppc-dev@lists.ozlabs.org > Subject: Re: [PATCH] fsl/smp: add low power boot support to replace spin boot > > > > On 01/14/2015 10:05 PM, Dongsheng Wang wrote: > > From: Wang Dongsheng <dongsheng.w...@freescale.com> > > > > U-boot put non-boot cpus into an low power state(PW10/PW20 or DOZE) > > when cpu powered up. To exit low power state kernel will send DOORBELL > > or MPIC-IPI signal to all those CPUs. > > > > e500/e500v2 use mpic to send IPI signal. > > e500mc and later use doorbell to send IPI signal. > > > > This feature tested on: > > POWER UP TEST: > > P1022DS(e500v2),96k times. > > P4080(e500mc), 110k times. > > T1024(e5500), 83k times. > > T4240(e6500), 150k times. > > > > CPU HOTPLUG TEST: > > P1022DS(e500v2),1.4 million times. > > P4080(e500mc), 1.8 million times. > > T1024(e5500), 1.3 million times. > > T4240(e6500), 1.1 million times. > > > > Signed-off-by: Wang Dongsheng <dongsheng.w...@freescale.com> > > > > This is a very good move. Can you explain what has been tested for 100K times, > or over a million times? > Thanks, I tested linux boot process and cpu hotplug.
For Linux boot process test: Each CPU can normally be started and random run an application, the application works well. For cpu hotplug test: Just plug out and plug in for each cpu. Cpu hotplug test works well. If I missed some case please let me know. > Have you verified on older e500v2 platforms, such as MPC8572? > I haven't tested MPC8572 and Just test P1022DS. Because is e500 and e500v2 use the same Low power boot codes. I will test this feature on MPC8572 platform. Regards, -Dongsheng _______________________________________________ Linuxppc-dev mailing list Linuxppc-dev@lists.ozlabs.org https://lists.ozlabs.org/listinfo/linuxppc-dev