[Skiboot] The state of "Running pollers with lock held"
stewart at linux.vnet.ibm.com
Wed Mar 25 16:23:40 AEDT 2015
Vasant Hegde <hegdevasant at linux.vnet.ibm.com> writes:
> On 03/25/2015 08:26 AM, Stewart Smith wrote:
>> I merged my patch to rework fsp_fetch_data to support proper
>> asynchronous fetching. This gets rid of the major source of these
> 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
Instead of that patch, could we move the starting of loading the LID to
earlier in PHB setup, only taking capi_lock right at the very end to
dump things into it.
Mikey? Your thoughts?
>> 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 :-)
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