Dario Faggioli 2d3d891d33 sched/deadline: Add SCHED_DEADLINE inheritance logic ... Some method to deal with rt-mutexes and make sched_dl interact with the current PI-coded is needed, raising all but trivial issues, that needs (according to us) to be solved with some restructuring of the pi-code (i.e., going toward a proxy execution-ish implementation). This is under development, in the meanwhile, as a temporary solution, what this commits does is: - ensure a pi-lock owner with waiters is never throttled down. Instead, when it runs out of runtime, it immediately gets replenished and it's deadline is postponed; - the scheduling parameters (relative deadline and default runtime) used for that replenishments --during the whole period it holds the pi-lock-- are the ones of the waiting task with earliest deadline. Acting this way, we provide some kind of boosting to the lock-owner, still by using the existing (actually, slightly modified by the previous commit) pi-architecture. We would stress the fact that this is only a surely needed, all but clean solution to the problem. In the end it's only a way to re-start discussion within the community. So, as always, comments, ideas, rants, etc.. are welcome! :-) Signed-off-by: Dario Faggioli <raistlin@linux.it> Signed-off-by: Juri Lelli <juri.lelli@gmail.com> [ Added !RT_MUTEXES build fix. ] Signed-off-by: Peter Zijlstra <peterz@infradead.org> Link: http://lkml.kernel.org/r/1383831828-15501-11-git-send-email-juri.lelli@gmail.com Signed-off-by: Ingo Molnar <mingo@kernel.org>		2014-01-13 13:42:56 +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	sched/deadline: Add SCHED_DEADLINE inheritance logic	2014-01-13 13:42:56 +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 inheritance logic	2014-01-13 13:42:56 +01:00
time	nohz: Fix another inconsistency between CONFIG_NO_HZ=n and nohz=off	2013-11-29 12:23:03 +01:00
trace	sched/deadline: Add SCHED_DEADLINE inheritance logic	2014-01-13 13:42:56 +01:00
.gitignore	Ignore generated file kernel/x509_certificate_list	2013-12-10 18:21:34 +00:00
acct.c
async.c
audit_tree.c	kernel/audit_tree.c:audit_add_tree_rule(): protect `rule' from kill_rules()	2013-06-12 16:29:46 -07:00
audit_watch.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
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_freezer.c	cgroup: make css_for_each_descendant() and friends include the origin css in the iteration	2013-08-08 20:11:27 -04:00
cgroup.c	cgroup: don't recycle cgroup id until all csses' have been destroyed	2013-12-17 08:11:52 -05:00
compat.c
configs.c
context_tracking.c	Linux 3.12-rc4	2013-10-09 12:36:13 +02:00
cpu_pm.c
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
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	ptrace: revert "Prepare to fix racy accesses on task breakpoints"	2013-07-09 10:33:26 -07:00
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 inheritance logic	2014-01-13 13:42:56 +01:00
freezer.c	libata, freezer: avoid block device removal while system is frozen	2013-12-19 13:50:32 -05:00
futex_compat.c
futex.c	rtmutex: Turn the plist into an rb-tree	2014-01-13 13:41:50 +01:00
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	locking: Fix copy/paste errors of "ARCH_INLINE_*_UNLOCK_BH"	2013-05-28 08:50:00 +02:00
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_signing.c	keys: change asymmetric keys to use common hash definitions	2013-10-25 17:15:18 -04:00
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
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_namespace.c	pid_namespace: make freeing struct pid_namespace rcu-delayed	2013-10-24 23:43:29 -04:00
pid.c	pidns: fix free_pid() to handle the first fork failure	2013-09-30 14:31:03 -07:00
posix-cpu-timers.c	posix_timers: fix racy timer delta caching on task exit	2013-07-03 16:54:42 +02:00
posix-timers.c
profile.c	kernel: delete __cpuinit usage from all core kernel files	2013-07-14 19:36:59 -04:00
ptrace.c	exec/ptrace: fix get_dumpable() incorrect tests	2013-11-13 12:09:33 +09:00
range.c	range: Do not add new blank slot with add_range_with_merge	2013-06-18 11:32:10 -05:00
reboot.c	kexec: migrate to reboot cpu	2013-12-18 19:04:50 -08:00
relay.c	kernel: delete __cpuinit usage from all core kernel files	2013-07-14 19:36:59 -04:00
res_counter.c	memcg: reduce function dereference	2013-09-12 15:38:02 -07:00
resource.c	kernel/resource.c: remove the unneeded assignment in function __find_resource	2013-07-03 16:08:06 -07:00
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	kernel: delete __cpuinit usage from all core kernel files	2013-07-14 19:36:59 -04:00
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_ni.c
sys.c	kernel/sys.c: remove obsolete #include <linux/kexec.h>	2013-11-13 12:09:13 +09:00
sysctl_binary.c	kernel/sysctl_binary.c: use scnprintf() instead of snprintf()	2013-11-13 12:09:33 +09:00
sysctl.c	sched/numa: Drop sysctl_numa_balancing_settle_count sysctl	2013-12-17 15:24:38 +01:00
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	sched: Rename sched.c as sched/core.c in comments and Documentation	2013-06-19 12:58:42 +02:00
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_namespace.c	KEYS: Add per-user_namespace registers for persistent per-UID kerberos caches	2013-09-24 10:35:19 +01:00
user-return-notifier.c
user.c	KEYS: fix uninitialized persistent_keyring_register_sem	2013-12-13 15:59:11 +00:00
utsname_sysctl.c
utsname.c	userns: Kill nsown_capable it makes the wrong thing easy	2013-08-30 23:44:11 -07:00
watchdog.c	watchdog: update watchdog_thresh properly	2013-09-24 17:00:25 -07:00
workqueue_internal.h	sched: Rename sched.c as sched/core.c in comments and Documentation	2013-06-19 12:58:42 +02:00
workqueue.c	PCI updates for v3.13:	2013-12-15 11:45:27 -08:00