Re: Unexplained long boot delays [Was Re: [GIT PULL] RCU changes for v6.9]

Thomas Gleixner
2024-03-14T20:45:38Z

On Thu, Mar 14 2024 at 12:09, Florian Fainelli wrote:
> On 3/14/24 11:51, Boqun Feng wrote:
>>>> trace_event=timer_migration:*,timer_start,timer_expire_entry,timer_cancel
>>>>
>>>> Though it's fairly possible that timer migration is not enabled at this point
>>>> as it's a late initcall. But we better not miss its traces otherwise.
>>>
>>> Here is another log with timer_migration:
>>>
>>> https://gist.github.com/ffainelli/237a5f9928850d6d8900d1f36da45aee
>>
>> FWIW, the trace point is still not enabled:
>>
>> [ 0.000000] Failed to enable trace event: timer_migration:*
>>
>> you need this commit in master:
>>
>> 36e40df35d2c "timer_migration: Add tracepoints"
>>
>> , which is one commit later than 7ee988770326 AFAICT
>
> Argh, thanks Boqun, here is a new capture:
>
> https://gist.github.com/ffainelli/cb562c1a60ef8e0e69e7d42143c48e8f
>
> this one is does include the tmigr events. Thanks!

You need 8ca1836769d758e4fbf5851bb81e181c52193f5d too.