Re: [PATCH 0/8] Suspend block api (version 8)

[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]

 



On Thu, 2010-05-27 at 15:19 -0400, Alan Stern wrote:
> On Thu, 27 May 2010, Peter Zijlstra wrote:
> 
> > I still don't see how blocking applications will cause missed wakeups in
> > anything but a buggy application at worst, and even those will
> > eventually get the event when they unblock.
> > 
> > What seems to be the confusion?
> 
> During forced suspend, applications are block because they are frozen.
> 
> When an event occurs, the application is notified somehow.  But it 
> can't respond because it is frozen.  Hence the event remains sitting in 
> a kernel queue and the system goes ahead and suspends anyway.  The 
> application doesn't get thawed until the system wakes up at some 
> indefinite time in the future.

If the kernel is awake to put things in queues, we're clearly not
suspended and userspace is running ?!
_______________________________________________
linux-pm mailing list
linux-pm@xxxxxxxxxxxxxxxxxxxxxxxxxx
https://lists.linux-foundation.org/mailman/listinfo/linux-pm


[Index of Archives]     [Linux ACPI]     [Netdev]     [Ethernet Bridging]     [Linux Wireless]     [CPU Freq]     [Kernel Newbies]     [Fedora Kernel]     [Security]     [Linux for Hams]     [Netfilter]     [Bugtraq]     [Yosemite News]     [MIPS Linux]     [ARM Linux]     [Linux RAID]     [Linux Admin]     [Samba]

  Powered by Linux