Re: next/master bisection: baseline.login on rk3328-rock64

Maxime Ripard
2022-10-10T14:51:42Z

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Hi Mark,

On Mon, Oct 10, 2022 at 01:17:15PM +0100, Mark Brown wrote:
> On Fri, Oct 07, 2022 at 02:10:11PM -0700, KernelCI bot wrote:
>
> The KernelCI bisection bot found a boot problem on today's -next
> on rk3328-rock64 with a defconfig plus debug fragments triggered by
> cb1b1dd96241f ("clk: Set req_rate on reparenting"). The log doesn't
> show any obvious warnings but simply stalls out after:
>
> [ 258.676722][ T1] pps_core: LinuxPPS API ver. 1 registered
> [ 258.684929][ T1] pps_core: Software ver. 5.3.6 - Copyright 2005-2007 Rodolfo Giometti <giometti@linux.it>
> [ 258.788655][ T1] PTP clock support registered
> [ 259.246358][ T1] EDAC MC: Ver: 3.0.0
>
> It seems like the performance of the system has been dramatically
> reduced, current mainline boots with the same kernel config show we're
> reaching that point after only 5s:
>
> [ 5.577047][ T1] PTP clock support registered
> [ 5.585556][ T1] EDAC MC: Ver: 3.0.0
>
> and getting to a prompt after a bit over a minute which is much more
> viable.

Thanks for the report

It might be related to https://lore.kernel.org/linux-clk/0acc7217-762c-7c0d-45a0-55c384824ce4@samsung.com/

I've sent a series that might address this issue:
https://lore.kernel.org/linux-clk/20221010-rpi-clk-fixes-again-v1-0-d87ba82ac404@cerno.tech/

Let me know if it fixes things for you

Maxime

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