Hello everyone, here we go with a new version of the SCHED_DEADLINE patchset (v8). I know that it has been a while since I released last version [1], but I thought not to spam the mailing list with simple updates. Well... this IS basically an update to 3.12-rc5, but it comes right before the next Kernel Summit and Real Time Linux Workshop and, since I'll be present at both events, it is probably time to fire-up the discussion again.
Moreover, interesting news: - a better mechanism for coordinating mutually exclusive access to critical sections is coming soon (we wrote a paper about it for RTLWS15 [2]); - the patchset is now available in the 3.4 and 3.10 Yocto kernels [3] (thanks a lot for this to Bruce Ashfield and Insop Song); even though it is hard to say how many new users we got with this, we can say that having SCHED_DEADLINE in Yocto provides availabily to OSVs like Wind River and others; - a european project has started (JUNIPER [4]) for which we will provide kernel level support based on this patchset (and we will soon have a real use case for it! yayyy! :)). The development is taking place at: https://github.com/jlelli/sched-deadline branch: sched-dl-V8 (this patchset on top of tip/master). Check the repositories frequently if you're interested, and feel free to e-mail me for any issue you run into. Test applications: https://github.com/gbagnoli/rt-app https://github.com/jlelli/schedtool-dl Development mailing list: linux-dl; you can subscribe from here: http://feanor.sssup.it/mailman/listinfo/linux-dl or via e-mail (send a message to linux-dl-requ...@retis.sssup.it with just the word `help' as subject or in the body to receive info). The code was being jointly developed by ReTiS Lab (http://retis.sssup.it) and Evidence S.r.l (http://www.evidence.eu.com) in the context of the ACTORS EU-funded project (http://www.actors-project.eu) and the S(o)OS EU-funded project (http://www.soos-project.eu/). Development is now supported by the JUNIPER EU-funded project [4]. As usual, any kind of feedback is welcome and appreciated. Thanks in advice and regards, - Juri [1] http://lwn.net/Articles/376502, http://lwn.net/Articles/353797, http://lwn.net/Articles/412410, http://lwn.net/Articles/490944, http://lwn.net/Articles/498472, http://lwn.net/Articles/521091, http://lwn.net/Articles/537388 [2] https://www.osadl.org/?id=1743 [3] https://www.yoctoproject.org/ [4] http://www.juniper-project.org/page/overview Dario Faggioli (9): sched: add sched_class->task_dead. sched: add extended scheduling interface. sched: SCHED_DEADLINE structures & implementation. sched: SCHED_DEADLINE avg_update accounting. sched: add schedstats for -deadline tasks. sched: add latency tracing for -deadline tasks. sched: drafted deadline inheritance logic. sched: add bandwidth management for sched_dl. sched: add sched_dl documentation. Harald Gustafsson (1): sched: add period support for -deadline tasks. Juri Lelli (3): sched: SCHED_DEADLINE SMP-related data structures & logic. sched: make dl_bw a sub-quota of rt_bw sched: speed up -dl pushes with a push-heap. Peter Zijlstra (1): rtmutex: turn the plist into an rb-tree. Documentation/scheduler/sched-deadline.txt | 196 ++++ arch/arm/include/asm/unistd.h | 2 +- arch/arm/include/uapi/asm/unistd.h | 3 + arch/arm/kernel/calls.S | 3 + arch/x86/syscalls/syscall_32.tbl | 3 + arch/x86/syscalls/syscall_64.tbl | 3 + include/linux/init_task.h | 10 + include/linux/rtmutex.h | 18 +- include/linux/sched.h | 122 +- include/linux/sched/deadline.h | 24 + include/linux/sched/rt.h | 3 +- include/linux/sched/sysctl.h | 11 + include/linux/syscalls.h | 7 + include/uapi/linux/sched.h | 1 + kernel/fork.c | 8 +- kernel/futex.c | 2 + kernel/hrtimer.c | 3 +- kernel/rtmutex-debug.c | 8 +- kernel/rtmutex.c | 164 ++- kernel/rtmutex_common.h | 22 +- kernel/sched/Makefile | 4 +- kernel/sched/core.c | 660 ++++++++++- kernel/sched/cpudeadline.c | 216 ++++ kernel/sched/cpudeadline.h | 33 + kernel/sched/deadline.c | 1658 ++++++++++++++++++++++++++++ kernel/sched/debug.c | 46 + kernel/sched/rt.c | 2 +- kernel/sched/sched.h | 150 +++ kernel/sched/stop_task.c | 2 +- kernel/sysctl.c | 7 + kernel/trace/trace_sched_wakeup.c | 45 +- kernel/trace/trace_selftest.c | 28 +- 32 files changed, 3343 insertions(+), 121 deletions(-) create mode 100644 Documentation/scheduler/sched-deadline.txt create mode 100644 include/linux/sched/deadline.h create mode 100644 kernel/sched/cpudeadline.c create mode 100644 kernel/sched/cpudeadline.h create mode 100644 kernel/sched/deadline.c -- 1.7.9.5 -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
