FS#10528 - PM_DEBUG not enabled in kernel (debugging suspend/resume)

Attached to Project: Arch Linux
Opened by Adrian C. (anrxc) - Thursday, 29 May 2008, 05:16 GMT
Last edited by Greg (dolby) - Wednesday, 18 June 2008, 09:43 GMT
Task Type Feature Request
Category Kernel
Status Closed
Assigned To Thomas Bächler (brain0)
Architecture All
Severity Low
Priority Normal
Reported Version 2007.08-2
Due in Version Undecided
Due Date Undecided
Percent Complete 100%
Votes 0
Private No

Details

Hello,
suspend functionality is very important today, and so affects many users, unfortunately many machines don't resume properly. It would be nice if we could debug it with the default kernel.

http://lxr.linux.no/linux/Documentation/power/s2ram.txt
https://wiki.ubuntu.com/DebuggingKernelSuspend

The documents suggest to:
- enable PM_DEBUG, and PM_TRACE


Additional info:
* kernel26 2.6.25.4-1
** # CONFIG_PM_DEBUG is not set
This task depends upon

Closed by  Greg (dolby)
Wednesday, 18 June 2008, 09:43 GMT
Reason for closing:  Won't implement
Comment by Pierre Schmitz (Pierre) - Thursday, 29 May 2008, 09:52 GMT
For Debugging you should compile your own kernel using abs. It's quite easy.
Comment by Adrian C. (anrxc) - Thursday, 29 May 2008, 15:11 GMT
Yes, ofcourse, but my point is that it affects a good number of users and so it may be in the interest of Arch to provide it out of the box.

I don't use Arch very long, so I'm not familiar with all the internals of the system, so far I understand that a good number of packages are compiled without debug support, striped etc. But still this is the kernel, and suspend is important to (almost) every mobile user, so maybe this could be added to those few portions of the kernel that have debugging enabled.

Just a feature request... whatever the decision is I trust it's the right one.
Comment by Aaron Griffin (phrakture) - Thursday, 29 May 2008, 17:23 GMT
Does enabling this cause any negative impact? Debugging scaffolding usually does.

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