Dario Faggioli
d50dde5a10
sched: Add new scheduler syscalls to support an extended scheduling parameters ABI ...
Add the syscalls needed for supporting scheduling algorithms
with extended scheduling parameters (e.g., SCHED_DEADLINE).
In general, it makes possible to specify a periodic/sporadic task,
that executes for a given amount of runtime at each instance, and is
scheduled according to the urgency of their own timing constraints,
i.e.:
- a (maximum/typical) instance execution time,
- a minimum interval between consecutive instances,
- a time constraint by which each instance must be completed.
Thus, both the data structure that holds the scheduling parameters of
the tasks and the system calls dealing with it must be extended.
Unfortunately, modifying the existing struct sched_param would break
the ABI and result in potentially serious compatibility issues with
legacy binaries.
For these reasons, this patch:
- defines the new struct sched_attr, containing all the fields
that are necessary for specifying a task in the computational
model described above;
- defines and implements the new scheduling related syscalls that
manipulate it, i.e., sched_setattr() and sched_getattr().
Syscalls are introduced for x86 (32 and 64 bits) and ARM only, as a
proof of concept and for developing and testing purposes. Making them
available on other architectures is straightforward.
Since no "user" for these new parameters is introduced in this patch,
the implementation of the new system calls is just identical to their
already existing counterpart. Future patches that implement scheduling
policies able to exploit the new data structure must also take care of
modifying the sched_*attr() calls accordingly with their own purposes.
Signed-off-by: Dario Faggioli <raistlin@linux.it>
[ Rewrote to use sched_attr. ]
Signed-off-by: Juri Lelli <juri.lelli@gmail.com>
[ Removed sched_setscheduler2() for now. ]
Signed-off-by: Peter Zijlstra <peterz@infradead.org>
Link: http://lkml.kernel.org/r/1383831828-15501-3-git-send-email-juri.lelli@gmail.com
Signed-off-by: Ingo Molnar <mingo@kernel.org>
2014-01-13 13:41:04 +01:00
sched: Add NEED_RESCHED to the preempt_count
2013-09-25 14:07:49 +02:00
kdb: Add support for external NMI handler to call KGDB/KDB
2013-10-03 18:47:54 +02:00
perf: Disable all pmus on unthrottling and rescheduling
2013-12-17 15:04:00 +01:00
gcov: reuse kbasename helper
2013-11-13 12:09:34 +09:00
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/lockdep: Mark __lockdep_count_forward_deps() as static
2013-11-13 13:50:17 +01:00
PM / sleep: Fix memory leak in pm_vt_switch_unregister().
2013-12-22 00:56:35 +01:00
printk.c: comments should refer to /proc/vmcore instead of /proc/vmcoreinfo
2013-11-13 12:09:14 +09:00
NOHZ: Check for nohz active instead of nohz enabled
2013-11-19 14:59:50 +01:00
sched: Add new scheduler syscalls to support an extended scheduling parameters ABI
2014-01-13 13:41:04 +01:00
nohz: Fix another inconsistency between CONFIG_NO_HZ=n and nohz=off
2013-11-29 12:23:03 +01:00
This fixes a long standing bug in the ftrace profiler.
2013-12-20 09:32:30 -08:00
Ignore generated file kernel/x509_certificate_list
2013-12-10 18:21:34 +00:00
Merge git://git.infradead.org/users/eparis/audit
2013-11-21 19:18:14 -08:00
audit: call audit_bprm() only once to add AUDIT_EXECVE information
2013-11-05 11:15:03 -05:00
audit: do not reject all AUDIT_INODE filter types
2013-11-05 11:09:16 -05:00
audit: fix type of sessionid in audit_set_loginuid()
2013-11-06 11:47:24 -05:00
mm: do not allocate page->ptl dynamically, if spinlock_t fits to long
2013-12-20 12:25:45 -08:00
xfs: update for v3.12-rc1
2013-09-09 11:19:09 -07:00
cgroup: don't recycle cgroup id until all csses' have been destroyed
2013-12-17 08:11:52 -05:00
cgroup: make css_for_each_descendant() and friends include the origin css in the iteration
2013-08-08 20:11:27 -04:00
Linux 3.12-rc4
2013-10-09 12:36:13 +02:00
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: Fix memory allocator deadlock
2013-11-27 13:52:47 -05:00
kernel/delayacct.c: remove redundant checking in __delayacct_add_tsk()
2013-11-13 12:09:12 +09:00
switch elf_core_write_extra_phdrs() to dump_emit()
2013-11-09 00:16:23 -05:00
kernel/extable: fix address-checks for core_kernel and init areas
2013-11-28 09:49:41 -08:00
Merge branch 'sched/urgent' into sched/core
2014-01-13 13:35:28 +01:00
libata, freezer: avoid block device removal while system is frozen
2013-12-19 13:50:32 -05:00
futex: move user address verification up to common code
2013-12-12 09:53:51 -08:00
userns: Kill nsown_capable it makes the wrong thing easy
2013-08-30 23:44:11 -07:00
Here are the 3.13 KVM changes. There was a lot of work on the PPC
2013-11-15 13:51:36 +09:00
static_key: WARN on usage before jump_label_init was called
2013-10-19 19:45:35 -04:00
kernel: remove CONFIG_USE_GENERIC_SMP_HELPERS
2013-11-15 09:32:22 +09:00
kexec: migrate to reboot cpu
2013-12-18 19:04:50 -08:00
kernel/kmod.c: check for NULL in call_usermodehelper_exec()
2013-09-30 14:31:02 -07:00
kprobes: use KSYM_NAME_LEN to size identifier buffers
2013-11-13 12:09:26 +09:00
kernel: replace strict_strto*() with kstrto*()
2013-09-12 15:38:03 -07:00
kthread: make kthread_create() killable
2013-11-13 12:08:59 +09:00
KEYS: Remove files generated when SYSTEM_TRUSTED_KEYRING=y
2013-12-13 15:59:11 +00:00
KEYS: Separate the kernel signature checking keyring from module signing
2013-09-25 17:17:01 +01:00
Mainly boring here, too. rmmod --wait finally removed, though.
2013-11-15 13:27:50 +09:00
keys: change asymmetric keys to use common hash definitions
2013-10-25 17:15:18 -04:00
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: make the sequence counter an atomic_t
2013-10-30 12:02:58 +08:00
kernel/panic.c: reduce 1 byte usage for print tainted buffer
2013-11-13 12:09:35 +09:00
kernel/params: fix handling of signed integer types
2013-09-28 12:35:52 -07:00
pidns: fix free_pid() to handle the first fork failure
2013-09-30 14:31:03 -07:00
pid_namespace: make freeing struct pid_namespace rcu-delayed
2013-10-24 23:43:29 -04:00
exec/ptrace: fix get_dumpable() incorrect tests
2013-11-13 12:09:33 +09:00
kexec: migrate to reboot cpu
2013-12-18 19:04:50 -08:00
memcg: reduce function dereference
2013-09-12 15:38:02 -07:00
constify copy_siginfo_to_user{,32}()
2013-11-09 00:16:29 -05:00
kernel: fix generic_exec_single indentation
2013-11-15 09:32:22 +09:00
revert "softirq: Add support for triggering softirq work on softirqs"
2013-11-15 09:32:22 +09:00
stop_machine: Fix race between stop_two_cpus() and stop_cpus()
2013-11-11 12:43:38 +01:00
kernel/sys.c: remove obsolete #include <linux/kexec.h>
2013-11-13 12:09:13 +09:00
sched/numa: Drop sysctl_numa_balancing_settle_count sysctl
2013-12-17 15:24:38 +01:00
kernel/sysctl_binary.c: use scnprintf() instead of snprintf()
2013-11-13 12:09:33 +09:00
KEYS: correct alignment of system_certificate_list content in assembly file
2013-12-10 18:25:28 +00:00
KEYS: correct alignment of system_certificate_list content in assembly file
2013-12-10 18:25:28 +00:00
task_work: documentation
2013-09-11 15:58:27 -07:00
genetlink: only pass array to genl_register_family_with_ops()
2013-11-19 16:39:05 -05:00
timer: Convert kmalloc_node(...GFP_ZERO...) to kzalloc_node(...)
2013-11-19 14:59:50 +01:00
userns: Kill nsown_capable it makes the wrong thing easy
2013-08-30 23:44:11 -07:00
kernel: provide a __smp_call_function_single stub for !CONFIG_SMP
2013-11-15 09:32:22 +09:00
KEYS: fix uninitialized persistent_keyring_register_sem
2013-12-13 15:59:11 +00:00
KEYS: Add per-user_namespace registers for persistent per-UID kerberos caches
2013-09-24 10:35:19 +01:00
userns: Kill nsown_capable it makes the wrong thing easy
2013-08-30 23:44:11 -07:00
watchdog: update watchdog_thresh properly
2013-09-24 17:00:25 -07:00
PCI updates for v3.13:
2013-12-15 11:45:27 -08:00
d50dde5a10