Arianna Avanzini
e21b7a0b98
block, bfq: add full hierarchical scheduling and cgroups support ...
Add complete support for full hierarchical scheduling, with a cgroups
interface. Full hierarchical scheduling is implemented through the
'entity' abstraction: both bfq_queues, i.e., the internal BFQ queues
associated with processes, and groups are represented in general by
entities. Given the bfq_queues associated with the processes belonging
to a given group, the entities representing these queues are sons of
the entity representing the group. At higher levels, if a group, say
G, contains other groups, then the entity representing G is the parent
entity of the entities representing the groups in G.
Hierarchical scheduling is performed as follows: if the timestamps of
a leaf entity (i.e., of a bfq_queue) change, and such a change lets
the entity become the next-to-serve entity for its parent entity, then
the timestamps of the parent entity are recomputed as a function of
the budget of its new next-to-serve leaf entity. If the parent entity
belongs, in its turn, to a group, and its new timestamps let it become
the next-to-serve for its parent entity, then the timestamps of the
latter parent entity are recomputed as well, and so on. When a new
bfq_queue must be set in service, the reverse path is followed: the
next-to-serve highest-level entity is chosen, then its next-to-serve
child entity, and so on, until the next-to-serve leaf entity is
reached, and the bfq_queue that this entity represents is set in
service.
Writeback is accounted for on a per-group basis, i.e., for each group,
the async I/O requests of the processes of the group are enqueued in a
distinct bfq_queue, and the entity associated with this queue is a
child of the entity associated with the group.
Weights can be assigned explicitly to groups and processes through the
cgroups interface, differently from what happens, for single
processes, if the cgroups interface is not used (as explained in the
description of the previous patch). In particular, since each node has
a full scheduler, each group can be assigned its own weight.
Signed-off-by: Fabio Checconi <fchecconi@gmail.com>
Signed-off-by: Paolo Valente <paolo.valente@linaro.org>
Signed-off-by: Arianna Avanzini <avanzini.arianna@gmail.com>
Signed-off-by: Jens Axboe <axboe@fb.com>
2017-04-19 08:30:26 -06:00
libceph: osd_request_timeout option
2017-03-07 14:30:38 +01:00
crush: merge working data and scratch
2017-02-20 12:16:11 +01:00
firmware /meson
serial: st-asc: Use new GPIOD API to obtain RTS pin
2017-03-14 10:36:41 +01:00
iio: sw-device: Fix config group initialization
2017-03-13 20:42:34 +00:00
KVM: arm/arm64: vgic-v3: Don't pretend to support IRQ/FIQ bypass
2017-03-06 10:30:57 +00:00
nlm: Ensure callback code also checks that the files match
2017-02-13 17:02:50 -05:00
RTC for 4.11
2017-02-27 19:59:21 -08:00
net/mlx4_core: Avoid delays during VF driver device shutdown
2017-03-16 20:14:51 -07:00
Mellanox specific updates for 4.11 merge window
2017-02-23 11:27:49 -08:00
Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-next
2017-02-22 10:15:09 -08:00
scripts/spelling.txt: add "partiton" pattern and fix typo instances
2017-02-27 18:43:46 -08:00
netfilter: nfnetlink: allow to check for generation ID
2017-02-12 14:45:11 +01:00
RTC for 4.11
2017-02-27 19:59:21 -08:00
qed: Add support for hardware offloaded FCoE.
2017-02-19 18:10:42 -05:00
scripts/spelling.txt: add "disble(d)" pattern and fix typo instances
2017-03-09 17:01:09 -08:00
sched/headers: Remove the <linux/topology.h> include from <linux/sched.h>
2017-03-03 01:45:41 +01:00
ARM: SoC driver updates
2017-02-23 15:57:04 -08:00
scripts/spelling.txt: add "partiton" pattern and fix typo instances
2017-02-27 18:43:46 -08:00
sched/headers: Prepare to move signal wakeup & sigpending methods from <linux/sched.h> into <linux/sched/signal.h>
2017-03-02 08:42:32 +01:00
usb-core: Add LINEAR_FRAME_INTR_BINTERVAL USB quirk
2017-03-14 17:07:31 +08:00
acpi/processor: Check for duplicate processor ids at hotplug time
2017-03-11 14:41:20 +01:00
async_tx: deprecate broken support for channel switching
2017-02-16 10:08:41 +05:30
Merge branch 'stable-4.11' of git://git.infradead.org/users/pcmoore/audit
2017-02-21 13:25:50 -08:00
average: change to declare precision, not factor
2017-03-02 08:32:46 +01:00
bdi: Do not wait for cgwbs release in bdi_unregister()
2017-03-22 20:11:30 -06:00
sched/headers, vfs/execve: Move the do_execve*() prototypes from <linux/sched.h> to <linux/binfmts.h>
2017-03-03 01:45:23 +01:00
block: make nr_iovecs unsigned in bio_alloc_bioset()
2017-03-23 08:16:11 -06:00
Revert "blkcg: allocate struct blkcg_gq outside request queue spinlock"
2017-03-29 11:25:48 -06:00
blk-mq: provide a default queue mapping for virtio device
2017-02-27 20:54:05 +02:00
blk-mq: export helpers
2017-04-14 14:06:55 -06:00
block: add a REQ_NOUNMAP flag for REQ_OP_WRITE_ZEROES
2017-04-08 11:25:38 -06:00
block, bfq: add full hierarchical scheduling and cgroups support
2017-04-19 08:30:26 -06:00
bpf: introduce BPF_F_ALLOW_OVERRIDE flag
2017-02-12 21:52:19 -05:00
bpf: make jited programs visible in traces
2017-02-17 13:40:05 -05:00
bug: switch data corruption check to __must_check
2017-02-24 17:46:56 -08:00
crypto: ccp - Assign DMA commands to the channel's CCP
2017-03-16 17:43:08 +08:00
cdrom: Make device operations read-only
2017-02-14 08:29:56 -07:00
sched/headers, cgroups: Remove the threadgroup_change_*() wrappery
2017-03-02 08:42:25 +01:00
mm: cma_alloc: allow to specify GFP mask
2017-02-24 17:46:55 -08:00
sigaltstack: support SS_AUTODISARM for CONFIG_COMPAT
2017-02-27 18:43:45 -08:00
objtool, modules: Discard objtool annotation sections for modules
2017-03-01 20:32:25 +01:00
Merge branch 'akpm' (patches from Andrew)
2017-02-27 23:09:29 -08:00
sched/headers: Prepare to move _init() prototypes from <linux/sched.h> to <linux/sched/init.h>
2017-03-02 08:42:40 +01:00
virtio, vhost: optimizations, fixes
2017-03-02 13:53:13 -08:00
Merge branch 'timers-core-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
2017-02-20 10:06:32 -08:00
sched/headers: Prepare to move the task_lock()/unlock() APIs to <linux/sched/task.h>
2017-03-02 08:42:38 +01:00
sched/headers: Prepare to remove <linux/cred.h> inclusion from <linux/sched.h>
2017-03-02 08:42:31 +01:00
mm: replace FAULT_FLAG_SIZE with parameter to huge_fault
2017-02-24 17:46:54 -08:00
rcu: Separate the RCU synchronization types and APIs into <linux/rcupdate_wait.h>
2017-03-02 08:42:24 +01:00
dccp: fix use-after-free in dccp_feat_activate_values
2017-03-07 14:15:27 -08:00
Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/ebiederm/user-namespace
2017-02-23 20:33:51 -08:00
sched/headers: Remove <linux/sched.h> and <linux/slab.h> from <linux/delayacct.h>
2017-03-03 01:45:28 +01:00
block: remove the discard_zeroes_data flag
2017-04-08 11:25:38 -06:00
drivers core: remove assert_held_device_hotplug()
2017-03-16 16:56:19 -07:00
mm: wire up GFP flag passing in dma_alloc_from_contiguous
2017-02-24 17:46:55 -08:00
This is a tree wide change and has been kept separate for that reason.
2017-02-25 13:45:43 -08:00
sched/headers: Prepare to use <linux/rcuupdate.h> instead of <linux/rculist.h> in <linux/sched.h>
2017-03-02 08:42:38 +01:00
blk-mq-sched: make completed_request() callback more useful
2017-04-14 14:06:57 -06:00
sched/headers: Prepare for new header dependencies before moving code to <linux/sched/task_stack.h>
2017-03-02 08:42:36 +01:00
tcp: mark skbs with SCM_TIMESTAMPING_OPT_STATS
2017-03-21 18:44:17 -07:00
f2fs: introduce free nid bitmap
2017-02-27 10:07:47 -08:00
sched/headers: Remove <linux/sched.h> and <linux/slab.h> from <linux/delayacct.h>
2017-03-03 01:45:28 +01:00
bpf: improve read-only handling
2017-03-12 23:51:34 -07:00
objtool, modules: Discard objtool annotation sections for modules
2017-03-01 20:32:25 +01:00
include/linux/fs.h: fix unsigned enum warning with gcc-4.2
2017-03-09 17:01:09 -08:00
fscrypt: eliminate ->prepare_context() operation
2017-03-15 14:15:47 -04:00
video: fbdev: fsl-diu-fb: fix spelling mistake "palette"
2017-02-20 13:51:07 +01:00
Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/ebiederm/user-namespace
2017-02-23 20:33:51 -08:00
block: constify struct blk_integrity_profile
2017-03-24 20:34:39 -06:00
mm: alloc_contig_range: allow to specify GFP mask
2017-02-24 17:46:55 -08:00
sched/headers, hrtimer: Remove the <linux/wait.h> include from <linux/hrtimer.h>
2017-03-03 01:45:40 +01:00
mm, x86: add support for PUD-sized transparent hugepages
2017-02-24 17:46:54 -08:00
mm: convert generic code to 5-level paging
2017-03-09 11:48:47 -08:00
hwmon: Add missing HWMON_T_ALARM
2017-03-22 00:18:22 -07:00
vmbus: remove hv_event_tasklet_disable/enable
2017-03-16 16:42:00 +09:00
sched/headers: Prepare for the removal of <linux/rtmutex.h> from <linux/sched.h>
2017-03-02 08:42:32 +01:00
idr: Return the deleted entry from idr_remove
2017-02-13 21:44:03 -05:00
tap: Renaming tap related APIs, data structures, macros
2017-02-11 20:59:41 -05:00
tap: tap as an independent module
2017-02-11 20:59:41 -05:00
net/utils: generic inet_pton_with_scope helper
2017-04-04 09:48:23 -06:00
sched/headers: Move the 'root_task_group' declaration to <linux/sched/autogroup.h>
2017-03-03 01:43:47 +01:00
mm, fs: reduce fault, page_mkwrite, and pfn_mkwrite to take only vmf
2017-02-24 17:46:54 -08:00
iommu: Disambiguate MSI region types
2017-03-22 16:16:17 +01:00
include/linux/iopoll.h: include <linux/ktime.h> instead of <linux/hrtimer.h>
2017-02-24 17:46:56 -08:00
Merge branch 'irq-core-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
2017-02-20 10:52:23 -08:00
irqdomain: Add empty irq_domain_check_msi_remap
2017-03-06 14:40:04 +00:00
There was some breakage with the changes for jump labels in the 4.11 merge
2017-03-07 09:37:28 -08:00
kasan: add a prototype of task_struct to avoid warning
2017-03-16 16:56:18 -07:00
scripts/spelling.txt: add "followings" pattern and fix typo instances
2017-02-27 18:43:47 -08:00
linux/kernel.h: fix DIV_ROUND_CLOSEST to support negative divisors
2017-02-24 17:46:57 -08:00
KEYS: Differentiate uses of rcu_dereference_key() and user_key_payload()
2017-03-02 10:09:00 +11:00
sched/headers: Prepare for new header dependencies before moving code to <linux/sched/coredump.h>
2017-03-02 08:42:28 +01:00
kobject: Export kobject_get_unless_zero()
2017-03-22 20:11:35 -06:00
kprobes: move kprobe declarations to asm-generic/kprobes.h
2017-02-27 18:43:45 -08:00
sched/headers: Prepare for new header dependencies before moving code to <linux/sched/coredump.h>
2017-03-02 08:42:28 +01:00
KVM: kvm_io_bus_unregister_dev() should never fail
2017-03-23 19:02:25 +01:00
Merge branch 'for-4.11' of git://git.kernel.org/pub/scm/linux/kernel/git/tj/libata
2017-02-21 17:21:32 -08:00
nfit, libnvdimm: fix interleave set cookie calculation
2017-03-01 00:49:42 -08:00
lightnvm: allow to init targets on factory mode
2017-04-16 10:06:25 -06:00
bpf: convert htab map to hlist_nulls
2017-03-09 13:27:17 -08:00
give up on gcc ilog2() constant optimizations
2017-03-02 12:17:22 -08:00
lib/lz4: remove back-compat wrappers
2017-02-24 17:46:57 -08:00
memblock: embed memblock type name within struct memblock_type
2017-02-24 17:46:54 -08:00
slab: use memcg_kmem_cache_wq for slab destruction operations
2017-02-22 16:41:27 -08:00
memory-hotplug: use dev_online for memhp_auto_online
2017-02-24 17:46:56 -08:00
mm/migration: make isolate_movable_page always defined
2017-02-24 17:46:55 -08:00
Merge branch 'linus' of git://git.kernel.org/pub/scm/linux/kernel/git/herbert/crypto-2.6
2017-02-23 09:54:19 -08:00
mm: convert generic code to 5-level paging
2017-03-09 11:48:47 -08:00
mm: vmscan: move dirty pages out of the way until they're flushed
2017-02-24 17:46:54 -08:00
mm/headers, sched/headers: Move task related MM types from <linux/mm_types.> to <linux/mm_types_task.h>
2017-03-03 01:43:48 +01:00
sched/headers, mm: Move 'struct tlbflush_unmap_batch' from <linux/sched.h> to <linux/mm_types_task.h>
2017-03-03 01:45:25 +01:00
mm, x86: add support for PUD-sized transparent hugepages
2017-02-24 17:46:54 -08:00
mm: vmscan: scan dirty pages even in laptop mode
2017-02-24 17:46:54 -08:00
Modules updates for v4.11
2017-02-22 17:08:33 -08:00
pci-v4.11-changes
2017-02-23 11:53:22 -08:00
Merge branch 'locking-core-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
2017-02-20 13:23:30 -08:00
net: Work around lockdep limitation in sockets that use sockets
2017-03-09 18:23:27 -08:00
net: solve a NAPI race
2017-03-01 09:50:58 -08:00
statx: Add a system call to make enhanced file info available
2017-03-02 20:51:15 -05:00
sched/headers: Move softlockup detector watchdog methods to <linux/nmi.h>
2017-03-03 01:43:38 +01:00
nvme_fc: Clean up host fcpio done status handling
2017-04-04 09:48:23 -06:00
nvme_fc: Sync FC-NVME header with standard
2017-04-04 09:48:23 -06:00
nvme-rdma: move nvme cm status helper to .h file
2017-02-22 13:34:00 -07:00
nvme: Correct NVMF enum values to match NVMe-oF rev 1.0
2017-04-02 10:24:07 +03:00
DeviceTree updates for 4.11:
2017-02-22 19:23:14 -08:00
of: introduce of_graph_get_remote_node
2017-02-15 08:53:32 -06:00
ARM: OMAP2+: Remove legacy gpmc-nand.c
2017-02-28 09:08:33 -08:00
sched/headers: Prepare for new header dependencies before moving code to <linux/sched/signal.h>
2017-03-02 08:42:29 +01:00
mm: fix <linux/pagemap.h> stray kernel-doc notation
2017-02-22 16:41:30 -08:00
PCI: add an API to get node from vector
2017-03-02 08:56:04 -07:00
sched/headers: Prepare for new header dependencies before moving code to <linux/sched/task_stack.h>
2017-03-02 08:42:36 +01:00
mm, x86: add support for PUD-sized transparent hugepages
2017-02-24 17:46:54 -08:00
net: phy: Do not perform software reset for Generic PHY
2017-03-05 17:57:27 -08:00
sched/headers: Prepare to use <linux/rcuupdate.h> instead of <linux/rculist.h> in <linux/sched.h>
2017-03-02 08:42:38 +01:00
procfs: use an enum for possible hidepid values
2017-02-24 17:46:56 -08:00
Merge branches 'pm-cpuidle', 'pm-cpufreq' and 'pm-sleep'
2017-03-03 00:43:11 +01:00
sched/headers: Move the PREEMPT_COUNT defines from <linux/sched.h> to <linux/preempt.h>
2017-03-03 01:43:47 +01:00
ptr_ring: fix race conditions when resizing
2017-02-20 10:27:56 -05:00
sched/headers: Prepare for new header dependencies before moving code to <linux/sched/signal.h>
2017-03-02 08:42:29 +01:00
kexec, x86/purgatory: Unbreak it and clean it up
2017-03-10 20:55:09 +01:00
radix-tree: Fix __rcu annotations
2017-02-13 21:44:09 -05:00
rbtree: use designated initializers
2017-02-24 17:46:57 -08:00
bpf: convert htab map to hlist_nulls
2017-03-09 13:27:17 -08:00
rcu: Separate the RCU synchronization types and APIs into <linux/rcupdate_wait.h>
2017-03-02 08:42:24 +01:00
rcu: Separate the RCU synchronization types and APIs into <linux/rcupdate_wait.h>
2017-03-02 08:42:24 +01:00
rcu: Separate the RCU synchronization types and APIs into <linux/rcupdate_wait.h>
2017-03-02 08:42:24 +01:00
locking/refcounts: Add missing kernel.h header to have UINT_MAX defined
2017-02-24 09:02:10 +01:00
reset: fix optional reset_control_get stubs to return NULL
2017-03-21 18:19:43 +01:00
sched/headers: Prepare to use <linux/rcuupdate.h> instead of <linux/rculist.h> in <linux/sched.h>
2017-03-02 08:42:38 +01:00
mm: drop page_check_address{,_transhuge}
2017-02-24 17:46:55 -08:00
mm: add arch-independent testcases for RODATA
2017-02-27 18:43:48 -08:00
sbitmap: add sbitmap_get_shallow() operation
2017-04-14 14:06:52 -06:00
sched/headers: Clean up <linux/sched.h>
2017-03-03 01:45:41 +01:00
sctp: add support for generating stream reconf resp chunk
2017-02-19 18:17:59 -05:00
Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/ebiederm/user-namespace
2017-02-23 20:33:51 -08:00
block/sed-opal: Introduce free_opal_dev to free the structure and clean up state
2017-02-23 11:55:41 -07:00
ipc/sem: add hysteresis
2017-02-27 18:43:46 -08:00
mm: remove shmem_mapping() shmem_zero_setup() duplicates
2017-02-24 17:46:56 -08:00
signals: Move signal data types from <linux/signal.h> to <linux/signal_types.h>
2017-03-03 01:43:48 +01:00
signals: Move signal data types from <linux/signal.h> to <linux/signal_types.h>
2017-03-03 01:43:48 +01:00
sched/headers: Prepare for new header dependencies before moving code to <linux/sched/signal.h>
2017-03-02 08:42:29 +01:00
sched/headers: Prepare for new header dependencies before moving code to <linux/sched/clock.h>
2017-03-02 08:42:27 +01:00
slab: remove synchronous synchronize_sched() from memcg cache deactivation path
2017-02-22 16:41:27 -08:00
slub: separate out sysfs_slab_release() from sysfs_slab_remove()
2017-02-22 16:41:27 -08:00
statx: Add a system call to make enhanced file info available
2017-03-02 20:51:15 -05:00
mm/swap: add cache for swap slots allocation
2017-02-22 16:41:30 -08:00
mm/swap: skip readahead only when swap slot cache is enabled
2017-02-22 16:41:30 -08:00
statx: Add a system call to make enhanced file info available
2017-03-02 20:51:15 -05:00
proc/sysctl: prune stale dentries during unregistering
2017-02-13 17:00:06 +13:00
block: constify struct blk_integrity_profile
2017-03-24 20:34:39 -06:00
sched/headers: Prepare for new header dependencies before moving code to <linux/sched/signal.h>
2017-03-02 08:42:29 +01:00
sched/headers, timekeeping: Move the timer tick function prototypes to <linux/timekeeping.h>
2017-03-03 01:45:25 +01:00
sched/headers, timekeeping: Move the timer tick function prototypes to <linux/timekeeping.h>
2017-03-03 01:45:25 +01:00
sched/headers, timers: Remove the <linux/sysctl.h> include from <linux/timer.h>
2017-03-03 01:45:39 +01:00
tracing: add __print_flags_u64()
2017-02-22 16:41:26 -08:00
ucount: Remove the atomicity from ucount->count
2017-03-06 15:26:37 -06:00
userfaultfd: non-cooperative: userfaultfd_remove revalidate vma in MADV_DONTNEED
2017-03-09 17:01:10 -08:00
virtio: provide a method to get the IRQ affinity mask for a virtqueue
2017-02-27 20:54:05 +02:00
vsock: track pkt owner vsock
2017-03-21 14:41:46 -07:00
mm/vmstats: add thp_split_pud event for clarity
2017-03-09 17:01:10 -08:00
mm/vmacache, sched/headers: Introduce 'struct vmacache' and move it from <linux/sched.h> to <linux/mm_types>
2017-03-02 08:42:25 +01:00
sched/headers: fix up header file dependency on <linux/sched/signal.h>
2017-03-08 10:36:03 -08:00
watchdog: Introduce watchdog_stop_on_unregister helper
2017-02-24 14:00:23 -08:00
block: Fix oops in locked_inode_to_wb_and_lock_list()
2017-03-22 20:11:33 -06:00
