Repository files (latest commit first)

Filename	Latest commit message	Latest commit date
Dario Faggioli aab03e05e8 sched/deadline: Add SCHED_DEADLINE structures & implementation ... Introduces the data structures, constants and symbols needed for SCHED_DEADLINE implementation. Core data structure of SCHED_DEADLINE are defined, along with their initializers. Hooks for checking if a task belong to the new policy are also added where they are needed. Adds a scheduling class, in sched/dl.c and a new policy called SCHED_DEADLINE. It is an implementation of the Earliest Deadline First (EDF) scheduling algorithm, augmented with a mechanism (called Constant Bandwidth Server, CBS) that makes it possible to isolate the behaviour of tasks between each other. The typical -deadline task will be made up of a computation phase (instance) which is activated on a periodic or sporadic fashion. The expected (maximum) duration of such computation is called the task's runtime; the time interval by which each instance need to be completed is called the task's relative deadline. The task's absolute deadline is dynamically calculated as the time instant a task (better, an instance) activates plus the relative deadline. The EDF algorithms selects the task with the smallest absolute deadline as the one to be executed first, while the CBS ensures each task to run for at most its runtime every (relative) deadline length time interval, avoiding any interference between different tasks (bandwidth isolation). Thanks to this feature, also tasks that do not strictly comply with the computational model sketched above can effectively use the new policy. To summarize, this patch: - introduces the data structures, constants and symbols needed; - implements the core logic of the scheduling algorithm in the new scheduling class file; - provides all the glue code between the new scheduling class and the core scheduler and refines the interactions between sched/dl and the other existing scheduling classes. Signed-off-by: Dario Faggioli <raistlin@linux.it> Signed-off-by: Michael Trimarchi <michael@amarulasolutions.com> Signed-off-by: Fabio Checconi <fchecconi@gmail.com> Signed-off-by: Juri Lelli <juri.lelli@gmail.com> Signed-off-by: Peter Zijlstra <peterz@infradead.org> Link: http://lkml.kernel.org/r/1383831828-15501-4-git-send-email-juri.lelli@gmail.com Signed-off-by: Ingo Molnar <mingo@kernel.org>		2014-01-13 13:41:06 +01:00
..
cpu	sched: Add NEED_RESCHED to the preempt_count	2013-09-25 14:07:49 +02:00
debug	kdb: Add support for external NMI handler to call KGDB/KDB	2013-10-03 18:47:54 +02:00
events	perf: Disable all pmus on unthrottling and rescheduling	2013-12-17 15:04:00 +01:00
gcov	gcov: reuse kbasename helper	2013-11-13 12:09:34 +09:00
irq	Merge branch 'irq-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip	2013-12-02 10:15:39 -08:00
locking	locking/lockdep: Mark __lockdep_count_forward_deps() as static	2013-11-13 13:50:17 +01:00
power	PM / sleep: Fix memory leak in pm_vt_switch_unregister().	2013-12-22 00:56:35 +01:00
printk	printk.c: comments should refer to /proc/vmcore instead of /proc/vmcoreinfo	2013-11-13 12:09:14 +09:00
rcu	NOHZ: Check for nohz active instead of nohz enabled	2013-11-19 14:59:50 +01:00
sched	sched/deadline: Add SCHED_DEADLINE structures & implementation	2014-01-13 13:41:06 +01:00
time	nohz: Fix another inconsistency between CONFIG_NO_HZ=n and nohz=off	2013-11-29 12:23:03 +01:00
trace	This fixes a long standing bug in the ftrace profiler.	2013-12-20 09:32:30 -08:00
.gitignore	Ignore generated file kernel/x509_certificate_list	2013-12-10 18:21:34 +00:00
acct.c
async.c
audit.c	Merge git://git.infradead.org/users/eparis/audit	2013-11-21 19:18:14 -08:00
audit.h	audit: call audit_bprm() only once to add AUDIT_EXECVE information	2013-11-05 11:15:03 -05:00
audit_tree.c
audit_watch.c
auditfilter.c	audit: do not reject all AUDIT_INODE filter types	2013-11-05 11:09:16 -05:00
auditsc.c	audit: fix type of sessionid in audit_set_loginuid()	2013-11-06 11:47:24 -05:00
backtracetest.c
bounds.c	mm: do not allocate page->ptl dynamically, if spinlock_t fits to long	2013-12-20 12:25:45 -08:00
capability.c	xfs: update for v3.12-rc1	2013-09-09 11:19:09 -07:00
cgroup.c	cgroup: don't recycle cgroup id until all csses' have been destroyed	2013-12-17 08:11:52 -05:00
cgroup_freezer.c
compat.c
configs.c
context_tracking.c	Linux 3.12-rc4	2013-10-09 12:36:13 +02:00
cpu.c	Merge branch 'sched-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip	2013-11-14 16:55:11 +09:00
cpu_pm.c
cpuset.c	cpuset: Fix memory allocator deadlock	2013-11-27 13:52:47 -05:00
crash_dump.c
cred.c
delayacct.c	kernel/delayacct.c: remove redundant checking in __delayacct_add_tsk()	2013-11-13 12:09:12 +09:00
dma.c
elfcore.c	switch elf_core_write_extra_phdrs() to dump_emit()	2013-11-09 00:16:23 -05:00
exec_domain.c
exit.c
extable.c	kernel/extable: fix address-checks for core_kernel and init areas	2013-11-28 09:49:41 -08:00
fork.c	sched/deadline: Add SCHED_DEADLINE structures & implementation	2014-01-13 13:41:06 +01:00
freezer.c	libata, freezer: avoid block device removal while system is frozen	2013-12-19 13:50:32 -05:00
futex.c	futex: move user address verification up to common code	2013-12-12 09:53:51 -08:00
futex_compat.c
groups.c	userns: Kill nsown_capable it makes the wrong thing easy	2013-08-30 23:44:11 -07:00
hrtimer.c	sched/deadline: Add SCHED_DEADLINE structures & implementation	2014-01-13 13:41:06 +01:00
hung_task.c	Here are the 3.13 KVM changes. There was a lot of work on the PPC	2013-11-15 13:51:36 +09:00
irq_work.c
itimer.c
jump_label.c	static_key: WARN on usage before jump_label_init was called	2013-10-19 19:45:35 -04:00
kallsyms.c
kcmp.c
Kconfig.freezer
Kconfig.hz	kernel: remove CONFIG_USE_GENERIC_SMP_HELPERS	2013-11-15 09:32:22 +09:00
Kconfig.locks
Kconfig.preempt
kexec.c	kexec: migrate to reboot cpu	2013-12-18 19:04:50 -08:00
kmod.c	kernel/kmod.c: check for NULL in call_usermodehelper_exec()	2013-09-30 14:31:02 -07:00
kprobes.c	kprobes: use KSYM_NAME_LEN to size identifier buffers	2013-11-13 12:09:26 +09:00
ksysfs.c	kernel: replace strict_strto*() with kstrto*()	2013-09-12 15:38:03 -07:00
kthread.c	kthread: make kthread_create() killable	2013-11-13 12:08:59 +09:00
latencytop.c
Makefile	KEYS: Remove files generated when SYSTEM_TRUSTED_KEYRING=y	2013-12-13 15:59:11 +00:00
module-internal.h	KEYS: Separate the kernel signature checking keyring from module signing	2013-09-25 17:17:01 +01:00
module.c	Mainly boring here, too. rmmod --wait finally removed, though.	2013-11-15 13:27:50 +09:00
module_signing.c	keys: change asymmetric keys to use common hash definitions	2013-10-25 17:15:18 -04:00
notifier.c
nsproxy.c	Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/ebiederm/user-namespace	2013-09-07 14:35:32 -07:00
padata.c	padata: make the sequence counter an atomic_t	2013-10-30 12:02:58 +08:00
panic.c	kernel/panic.c: reduce 1 byte usage for print tainted buffer	2013-11-13 12:09:35 +09:00
params.c	kernel/params: fix handling of signed integer types	2013-09-28 12:35:52 -07:00
pid.c	pidns: fix free_pid() to handle the first fork failure	2013-09-30 14:31:03 -07:00
pid_namespace.c	pid_namespace: make freeing struct pid_namespace rcu-delayed	2013-10-24 23:43:29 -04:00
posix-cpu-timers.c
posix-timers.c
profile.c
ptrace.c	exec/ptrace: fix get_dumpable() incorrect tests	2013-11-13 12:09:33 +09:00
range.c
reboot.c	kexec: migrate to reboot cpu	2013-12-18 19:04:50 -08:00
relay.c
res_counter.c	memcg: reduce function dereference	2013-09-12 15:38:02 -07:00
resource.c
seccomp.c
signal.c	constify copy_siginfo_to_user{,32}()	2013-11-09 00:16:29 -05:00
smp.c	kernel: fix generic_exec_single indentation	2013-11-15 09:32:22 +09:00
smpboot.c
smpboot.h
softirq.c	revert "softirq: Add support for triggering softirq work on softirqs"	2013-11-15 09:32:22 +09:00
stacktrace.c
stop_machine.c	stop_machine: Fix race between stop_two_cpus() and stop_cpus()	2013-11-11 12:43:38 +01:00
sys.c	kernel/sys.c: remove obsolete #include <linux/kexec.h>	2013-11-13 12:09:13 +09:00
sys_ni.c
sysctl.c	sched/numa: Drop sysctl_numa_balancing_settle_count sysctl	2013-12-17 15:24:38 +01:00
sysctl_binary.c	kernel/sysctl_binary.c: use scnprintf() instead of snprintf()	2013-11-13 12:09:33 +09:00
system_certificates.S	KEYS: correct alignment of system_certificate_list content in assembly file	2013-12-10 18:25:28 +00:00
system_keyring.c	KEYS: correct alignment of system_certificate_list content in assembly file	2013-12-10 18:25:28 +00:00
task_work.c	task_work: documentation	2013-09-11 15:58:27 -07:00
taskstats.c	genetlink: only pass array to genl_register_family_with_ops()	2013-11-19 16:39:05 -05:00
test_kprobes.c
time.c
timeconst.bc
timer.c	timer: Convert kmalloc_node(...GFP_ZERO...) to kzalloc_node(...)	2013-11-19 14:59:50 +01:00
tracepoint.c
tsacct.c
uid16.c	userns: Kill nsown_capable it makes the wrong thing easy	2013-08-30 23:44:11 -07:00
up.c	kernel: provide a __smp_call_function_single stub for !CONFIG_SMP	2013-11-15 09:32:22 +09:00
user-return-notifier.c
user.c	KEYS: fix uninitialized persistent_keyring_register_sem	2013-12-13 15:59:11 +00:00
user_namespace.c	KEYS: Add per-user_namespace registers for persistent per-UID kerberos caches	2013-09-24 10:35:19 +01:00
utsname.c	userns: Kill nsown_capable it makes the wrong thing easy	2013-08-30 23:44:11 -07:00
utsname_sysctl.c
watchdog.c	watchdog: update watchdog_thresh properly	2013-09-24 17:00:25 -07:00
workqueue.c	PCI updates for v3.13:	2013-12-15 11:45:27 -08:00
workqueue_internal.h