Messages in this thread | | | Date | Fri, 1 Apr 2005 12:47:24 +0200 | From | Ingo Molnar <> | Subject | [patch] Real-Time Preemption, -RT-2.6.12-rc1-V0.7.43-00 |
| |
i have released the -V0.7.43-00 Real-Time Preemption patch, which can be downloaded from the usual place:
http://redhat.com/~mingo/realtime-preempt/
this release too is a step towards more robustness. I found a bug that caused an infinite recursion and subsequent spontaneous reboot. The bug was once again related to lock->debug locks, so i decided to get rid of them altogether: from now on every lock in the -RT domain is debugged.
To be able to use code that relies on incompatible properties of stock Linux semaphores (and rwsems), i've added a new compile-time semaphore-type mechanism that enables the easy switching from RT semaphores to stock semaphores. I've done this conversion for all subsystems that needed it - e.g. XFS, firewire, USB and SCSI. XFS seems to be working much better with this approach - BYMMV.
but an unavoidable side-effect is that the whole codebase got turned upside down once again, so be careful and expect a few rough edges. In particular keep an eye on new compile-time warnings related to semaphores - code that gives a warning might build but it will almost certainly not work.
to create a -V0.7.43-00 tree from scratch, the patching order is:
http://kernel.org/pub/linux/kernel/v2.6/linux-2.6.11.tar.bz2 http://kernel.org/pub/linux/kernel/v2.6/testing/patch-2.6.12-rc1.bz2 http://redhat.com/~mingo/realtime-preempt/realtime-preempt-2.6.12-rc1-V0.7.43-00
Ingo - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
| |