i have released the 2.6.19-rt6 tree, which can be downloaded from the
usual place:
http://redhat.com/~mingo/realtime-preempt/
more info about the -rt patchset can be found on the RT wiki:
http://rt.wiki.kernel.org
this is a fixes-only release. Changes since -rt1:
- fix !PREEMPT_RT build error (reported by Mike Galbraith)
- tracer build fix (from Mike Galbraith)
- latest KVM (Kernel Virtual Machine) branch from Avi Kivity
- itimer starvation fix (Thomas Gleixner)
- tracer: fix 32-bit cycles regression (reported by Sergei Shtylyov)
- kernel-rt-devel fix on i686: include asm-x86_64 to allow external
modules (such as FUSE) to build. (reported by Giandomenico De Tullio)
- hrtimers: fix resume bug in migrate_hrtimers() causing possible
memory corruption
- hrtimers: fix jiffy update order in hrtimer_notify_resume() to avoid
time warp after resume
- lockdep: fix irq-disabling buglet causing boot lockup
- seqlock: fix lockdep naming macro
- acpi: keep all other ACPI locks non-raw (some ACPI critical sections
use the SLAB allocator, which is preemptible in -rt)
- netconsole: fix rtl8139_poll_controller() to use _nosync disable
- acpi: mark acpi_gbl_hardware_lock as raw, can be used in C3 idle code
- acpi: fix irq-enable code in drivers/acpi/ec.c (
- x86_64: fix SysRq-L (show all regs via NMI) feature
- new debug helper: ignore_loglevel boot option
- new debug helper: debug_direct_keyboard boot option
- new debug helper: show nmi print callbacks from do_IRQ too
- debug_direct_keyboard fix: turn off lockdep while this hack is
utilized
- mark pci_config_lock raw, to fix boot crash
- disable HPET for now, it's not working reliably and causes hangs
- x86_64: fix dump_stack() smp_processor_id() warnings
- make NMI watchdog asserts nondestructive
- i686: restore /proc/interrupts output to upstream format
- fix boot hang due across warm reboots
- fix set_workqueue_thread_prio() bug resulting in boot hang
- e1000: update to driver 7.3.15-k2 to fix latency problem
- tracer updates: use the gtod clocksource for timestamping, to
increase the reliability of latency traces
- tracer feature: trace_use_raw_cycles to force the use of TSC even
if it's not reliable
to build a 2.6.19-rt6 tree, the following patches should be applied:
http://kernel.org/pub/linux/kernel/v2.6/linux-2.6.19.tar.bz2
http://redhat.com/~mingo/realtime-preempt/patch-2.6.19-rt6
the -rt YUM repository for Fedora Core 6 and 5, for architectures x86_64
and i686 can be activated via:
cd /etc/yum.repos.d
wget http://people.redhat.com/~mingo/realtime-preempt/rt.repo
yum install kernel-rt.x86_64 # on x86_64
yum install kernel-rt # on i686
yum update kernel-rt # refresh - or enable yum-updatesd
(note: it will take 15-30 minutes from now on for the yum repository to
be updated to -rt6)
as usual, bugreports, fixes and suggestions are welcome,
Ingo
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