[Skiboot] The state of "Running pollers with lock held"

[Vasant Hegde]

On 03/25/2015 08:26 AM, Stewart Smith wrote:
> So,
> 
> I merged my patch to rework fsp_fetch_data to support proper
> asynchronous fetching. This gets rid of the major source of these
> warnings.
> 

I have not gone through your patches yet.. Will take a look tomorrow.

> We may still have something in an op_display() code path (I should
> really save the backtrace next time I see it).
> 
> We also have:
> [3742482870,3] Running pollers with lock held !
> CPU 00a0 Backtrace:
>  S: 0000000031c839e0 R: 0000000030013a98   .backtrace+0x40
>  S: 0000000031c83a60 R: 0000000030019ec8   .opal_run_pollers+0x9c
>  S: 0000000031c83af0 R: 0000000030027074   .wait_for_resource_loaded+0x48
>  S: 0000000031c83b90 R: 0000000030047104   .capp_load_ucode+0x1e0
>  S: 0000000031c83c80 R: 000000003004d9bc   .probe_phb3+0x1240
>  S: 0000000031c83e30 R: 0000000030014be0   .main_cpu_entry+0x468
>  S: 0000000031c83f00 R: 000000003000253c   boot_entry+0x194

I had fixed this one along with poller patch.. Looks like you have not applied
that..

https://lists.ozlabs.org/pipermail/skiboot/2015-March/000692.html

> 
> as well as (when doing code update):
> 
> [32872663019955,3] Running pollers with lock held !
> CPU 0020 Backtrace:
>  S: 0000000031a83960 R: 0000000030013a98   .backtrace+0x40
>  S: 0000000031a839e0 R: 0000000030019ec8   .opal_run_pollers+0x9c
>  S: 0000000031a83a70 R: 00000000300548e8   .fsp_sync_msg+0xb8
>  S: 0000000031a83b20 R: 000000003005d2d8   .fsp_flash_firmware+0xbc
>  S: 0000000031a83c20 R: 000000003006b070   .ibm_fsp_cec_reboot+0x7c
>  S: 0000000031a83cb0 R: 0000000030026d20   .opal_cec_reboot+0x6c
>  S: 0000000031a83d40 R: 0000000030005138   opal_entry+0x78
>  S: 0000000031a83f00 R: 00000000300025c4   secondary_wait+0x84

Since its related to code update I will take a look :-)

-Vasant