Need help on Suspend on RAM
Hi all
I'm working on Suspend on RAM on kernel 2.6.23.17 on a Sh4 based platform. The suspend on RAM seems really working.
But it I suspend the board more then 3/4 times than the system doesn't resume the user space
but via JTAG I see the kernel is running.
I enabled CONFIG_DETECT_SOFTLOCKUP and the kernel prints:
|BUG: soft lockup detected on CPU#0|
Moreover I installed the patch suggested in http://lwn.net/Articles/287024/
and it seems the kernel is running in:
- run_timer_softirq
and doing some other test I can confirm the kernel is really there...
In the board there is no real RTC... All the 'time' is based on the system timer
and between suspend/resume the timer is really stopped.
Do you have some suggestion?
Regards
Ciao
Francesco
Hi all
I think I find a fix (?)
In the file:kernel/time/timekeeping.c
I'm removing the functions:
- timekeeping_suspend and
- timekeeping_resume
I forgot to say that I have no real ClockSource (this means that in suspend also the clocksource is suspended...)
Could it be a fix or there is an other solution?
Regards
Francesco
Francesco VIRLINZI ha scritto:
Quoted 33 lines
Hi all
I'm working on Suspend on RAM on kernel 2.6.23.17 on a Sh4 based platform. The suspend on RAM seems really working.
But it I suspend the board more then 3/4 times than the system doesn't resume the user space
but via JTAG I see the kernel is running.I enabled
CONFIG_DETECT_SOFTLOCKUPand the kernel prints:|BUG: soft lockup detected on CPU#0|
Moreover I installed the patch suggested in http://lwn.net/Articles/287024/
and it seems the kernel is running in:
-run_timer_softirqand doing some other test I can confirm the kernel is really there...
In the board there is no real RTC... All the 'time' is based on the system timer
and between suspend/resume the timer is really stopped.Do you have some suggestion?
Regards
Ciao
Francesco
_______________________________________________
linux-pm mailing list
[email protected]
https://lists.linux-foundation.org/mailman/listinfo/linux-pm
Quoted 9 lines · Francesco VIRLINZI
Hi all
I think I find a fix (?)
In the file:kernel/time/timekeeping.c
I'm removing the functions:
-timekeeping_suspendand
-timekeeping_resume
I forgot to say that I have no real ClockSource (this means that in suspend also the clocksource is suspended...)
Simply commenting this out is probably not the right solution.. could you find why it breaks your system and talk to tglx?
Pavel
Quoted 42 lines
Regards
FrancescoFrancesco VIRLINZI ha scritto:
Quoted 24 lines
Hi all
I'm working on Suspend on RAM on kernel 2.6.23.17 on a Sh4 based platform. The suspend on RAM seems really working.
But it I suspend the board more then 3/4 times than the system doesn't resume the user space
but via JTAG I see the kernel is running.I enabled
CONFIG_DETECT_SOFTLOCKUPand the kernel prints:|BUG: soft lockup detected on CPU#0|
Moreover I installed the patch suggested in http://lwn.net/Articles/287024/
and it seems the kernel is running in:
-run_timer_softirqand doing some other test I can confirm the kernel is really there...
In the board there is no real RTC... All the 'time' is based on the system timer
and between suspend/resume the timer is really stopped.Do you have some suggestion?
Quoted 9 lines
Regards
Ciao
Francesco
_______________________________________________
linux-pm mailing list
[email protected]
https://lists.linux-foundation.org/mailman/listinfo/linux-pm_______________________________________________
linux-pm mailing list
[email protected]
https://lists.linux-foundation.org/mailman/listinfo/linux-pm
Signature · 2 lines
(english) http://www.livejournal.com/~pavelmachek (cesky, pictures) http://atrey.karlin.mff.cuni.cz/~pavel/picture/horses/blog.html