Roman Gushchin
4bfc0bb2c6
bpf: decouple the lifetime of cgroup_bpf from cgroup itself ...
Currently the lifetime of bpf programs attached to a cgroup is bound
to the lifetime of the cgroup itself. It means that if a user
forgets (or intentionally avoids) to detach a bpf program before
removing the cgroup, it will stay attached up to the release of the
cgroup. Since the cgroup can stay in the dying state (the state
between being rmdir()'ed and being released) for a very long time, it
leads to a waste of memory. Also, it blocks a possibility to implement
the memcg-based memory accounting for bpf objects, because a circular
reference dependency will occur. Charged memory pages are pinning the
corresponding memory cgroup, and if the memory cgroup is pinning
the attached bpf program, nothing will be ever released.
A dying cgroup can not contain any processes, so the only chance for
an attached bpf program to be executed is a live socket associated
with the cgroup. So in order to release all bpf data early, let's
count associated sockets using a new percpu refcounter. On cgroup
removal the counter is transitioned to the atomic mode, and as soon
as it reaches 0, all bpf programs are detached.
Because cgroup_bpf_release() can block, it can't be called from
the percpu ref counter callback directly, so instead an asynchronous
work is scheduled.
The reference counter is not socket specific, and can be used for any
other types of programs, which can be executed from a cgroup-bpf hook
outside of the process context, had such a need arise in the future.
Signed-off-by: Roman Gushchin <guro@fb.com>
Cc: jolsa@redhat.com
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
2019-05-28 09:30:02 -07:00
libceph: make ceph_pr_addr take an struct ceph_entity_addr pointer
2019-05-07 19:43:05 +02:00
AT91 SoC for 5.2
2019-05-16 11:05:11 -07:00
dmaengine: idma64: Move driver name to the header
2019-04-26 16:55:23 +05:30
net: dsa: sja1105: Add support for traffic through standalone ports
2019-05-05 21:52:42 -07:00
ARM: SoC-related driver updates
2019-05-16 09:19:14 -07:00
include/fsl: add common FlexTimer #defines in a separate header.
2019-04-25 21:33:41 +02:00
This is the bulk of the GPIO changes for the v5.2 kernel cycle:
2019-05-11 10:54:43 -04:00
power supply and reset changes for the v5.2 series
2019-05-15 18:50:40 -07:00
Merge branch 'irq-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
2019-05-19 10:58:45 -07:00
This pull consists mostly of nfsd container work:
2019-05-15 18:21:43 -07:00
treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 1
2019-05-21 11:28:39 +02:00
Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net
2019-05-20 08:21:07 -07:00
mmc: sdio: Add helper macro for sdio_driver boilerplate
2019-04-23 18:09:07 +02:00
mtd: nand: Make flags for bad block marker position more granular
2019-04-18 08:54:07 +02:00
ipset: drop ipset_nest_start() and ipset_nest_end()
2019-04-27 17:03:44 -04:00
phy: core: Add *release* phy_ops invoked when the consumer relinquishes PHY
2019-04-17 14:13:17 +05:30
treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 18
2019-05-21 11:28:46 +02:00
treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 1
2019-05-21 11:28:39 +02:00
treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 1
2019-05-21 11:28:39 +02:00
treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 4
2019-05-21 11:28:40 +02:00
include/linux/sched/signal.h: replace tsk' with task'
2019-05-14 19:52:52 -07:00
Merge branch 'irq-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
2019-05-19 10:58:45 -07:00
soundwire: remove multiple blank lines
2019-05-02 17:17:52 +02:00
spi: expand mode support
2019-05-02 10:37:55 +09:00
This pull consists mostly of nfsd container work:
2019-05-15 18:21:43 -07:00
USB: changes for v5.2 merge window
2019-05-03 18:05:27 +02:00
pci-v5.2-changes
2019-05-14 10:30:10 -07:00
mmc: alcor: work with multiple-entry sglists
2019-05-06 11:55:39 +02:00
mailbox: Add support for Armada 37xx rWTM mailbox
2019-05-09 00:41:00 -05:00
treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 18
2019-05-21 11:28:46 +02:00
ntp: Audit NTP parameters adjustment
2019-04-15 18:14:01 -04:00
include/linux/balloon_compaction.h: drop unused function stubs
2019-05-14 09:47:48 -07:00
exec: move struct linux_binprm::buf
2019-05-14 19:52:50 -07:00
block: switch all files cleared marked as GPLv2 to SPDX tags
2019-04-30 16:11:57 -06:00
include/linux/bitops.h: sanitize rotate primitives
2019-05-14 19:52:49 -07:00
block: add a SPDX tag to blk-mq-rdma.h
2019-04-30 16:12:02 -06:00
blk-mq: always free hctx after request queue is freed
2019-05-04 07:24:08 -06:00
blk-mq: always free hctx after request queue is freed
2019-05-04 07:24:08 -06:00
bpf: decouple the lifetime of cgroup_bpf from cgroup itself
2019-05-28 09:30:02 -07:00
bpf: verifier: insert zero extension according to analysis result
2019-05-24 18:58:37 -07:00
bpf: Introduce bpf sk local storage
2019-04-27 09:07:04 -07:00
bpf: verifier: mark verified-insn with sub-register zext flag
2019-05-24 18:58:37 -07:00
block: switch all files cleared marked as GPLv2 or later to SPDX tags
2019-04-30 16:11:59 -06:00
block: fix mismerge in bvec_advance
2019-05-07 08:39:02 -06:00
cgroup: cgroup v2 freezer
2019-04-19 11:26:48 -07:00
bpf: decouple the lifetime of cgroup_bpf from cgroup itself
2019-05-28 09:30:02 -07:00
clk: Remove io.h from clk-provider.h
2019-05-15 13:21:37 -07:00
clk: Add missing stubs for a few functions
2019-04-25 08:19:15 -07:00
tracing: Simplify "if" macro code
2019-05-09 15:25:13 -04:00
compiler: allow all arches to enable CONFIG_OPTIMIZE_INLINING
2019-05-14 19:52:48 -07:00
panic: add an option to replay all the printk message in buffer
2019-05-18 15:52:26 -07:00
coresight: etm4x: Add kernel configuration for CONTEXTID
2019-04-25 22:00:16 +02:00
coresight: Communicate perf event to sink buffer allocation functions
2019-04-25 22:00:17 +02:00
counter: Introduce the Generic Counter interface
2019-04-25 21:33:37 +02:00
counter: Introduce the Generic Counter interface
2019-04-25 21:33:37 +02:00
CPER: Remove unnecessary use of user-space types
2019-04-13 11:17:36 -05:00
Merge branch 'x86-mds-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
2019-05-14 07:57:29 -07:00
cpufreq: Call transition notifier only once for each policy
2019-05-10 12:20:36 +02:00
powerpc updates for 5.2
2019-05-10 05:29:27 -07:00
include/linux/cpumask.h: fix double string traverse in cpumask_parse
2019-05-14 19:52:50 -07:00
Clean up fscrypt's dcache revalidation support, and other
2019-05-07 21:28:04 -07:00
dm mpath: fix missing call of path selector type->end_io
2019-04-25 15:38:52 -04:00
We have a couple new features and changes in the core clk framework this time
2019-05-09 14:50:09 -07:00
dma-buf: explicitely note that dma-fence-chains use 64bit seqno
2019-04-16 14:49:10 +02:00
iommu/dma-iommu: Remove iommu_dma_map_msi_msg()
2019-05-03 15:30:23 +01:00
dma-mapping: add a Kconfig symbol to indicate arch_dma_prep_coherent presence
2019-05-06 15:04:40 +02:00
treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 7
2019-05-21 11:28:40 +02:00
dns_resolver: Allow used keys to be invalidated
2019-05-15 17:35:54 +01:00
RDMA/core: Introduce RDMA subsystem ibdev_* print functions
2019-05-01 12:29:28 -04:00
x86/reboot, efi: Use EFI reboot for Acer TravelMate X514-51T
2019-04-16 10:01:24 +02:00
bfq: update internal depth state when queue depth changes
2019-04-13 19:08:22 -06:00
Merge git://git.kernel.org/pub/scm/linux/kernel/git/bpf/bpf-next
2019-04-28 08:42:41 -04:00
f2fs: allow unfixed f2fs_checkpoint.checksum_offset
2019-05-08 21:23:11 -07:00
bpf: verifier: insert zero extension according to analysis result
2019-05-24 18:58:37 -07:00
Add as a feature case-insensitive directories (the casefold feature)
2019-05-07 21:12:44 -07:00
This pull request contains the following changes for UBI/UBIFS
2019-05-12 18:16:31 -04:00
\n
2019-05-13 15:08:16 -07:00
\n
2019-05-13 15:08:16 -07:00
The major changes in this tracing update includes:
2019-05-15 16:05:47 -07:00
block: fix use-after-free on gendisk
2019-04-22 09:48:12 -06:00
hugetlb: allow to free gigantic pages regardless of the configuration
2019-05-14 09:47:47 -07:00
Merge branches 'for-5.1/upstream-fixes', 'for-5.2/core', 'for-5.2/ish', 'for-5.2/logitech', 'for-5.2/macally', 'for-5.2/picolcd', 'for-5.2/sensor' and 'for-5.2/u2fzero' into for-linus
2019-05-06 15:45:18 +02:00
mm/hmm: convert various hmm_pfn_* to device_entry which is a better name
2019-05-14 09:47:48 -07:00
treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 1
2019-05-21 11:28:39 +02:00
mm/huge_memory: fix vmf_insert_pfn_{pmd, pud}() crash, handle unaligned addresses
2019-05-14 09:47:44 -07:00
hugetlb: use same fault hash key for shared and private mappings
2019-05-14 09:47:48 -07:00
hwmon: Add support for samples attributes
2019-04-15 17:19:53 -07:00
i2c: algo: bit: add flag to whitelist atomic transfers
2019-04-16 13:08:16 +02:00
treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 1
2019-05-21 11:28:39 +02:00
treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 1
2019-05-21 11:28:39 +02:00
treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 1
2019-05-21 11:28:39 +02:00
treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 1
2019-05-21 11:28:39 +02:00
treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 1
2019-05-21 11:28:39 +02:00
ieee80211: update HE IEs to D4.0 spec
2019-04-26 13:02:11 +02:00
bridge: broute: make broute a real ebtables table
2019-04-12 01:47:50 +02:00
ipv4/igmp: shrink struct ip_sf_list
2019-05-22 17:57:37 -07:00
s390/kexec_file: Disable kexec_load when IPLed secure
2019-04-29 10:44:03 +02:00
iommu: io-pgtable: Add ARM Mali midgard MMU page table format
2019-04-12 12:52:38 -05:00
iomap: Add a page_prepare callback
2019-05-01 07:47:37 -07:00
Merge branch 'api-features' into arm/smmu
2019-04-26 17:11:46 +02:00
ipc: conserve sequence numbers in ipcmni_extend mode
2019-05-14 19:52:52 -07:00
genirq: Introduce irq_chip_{request,release}_resource_parent() apis
2019-05-01 10:41:38 +01:00
soc: ti: Add MSI domain bus support for Interrupt Aggregator
2019-05-01 10:49:17 +01:00
Some bug fixes, and an update to the URL's for the final version of
2019-05-19 11:43:16 -07:00
locking/static_key: Add support for deferred static branches
2019-04-29 08:29:20 +02:00
lib/math: move int_pow() from pwm_bl.c for wider use
2019-05-14 19:52:49 -07:00
selinux/stable-5.2 PR 20190507
2019-05-07 18:48:09 -07:00
kobject: Add support for default attribute groups to kobj_type
2019-04-25 22:06:10 +02:00
x86/kprobes: Verify stack frame on kretprobe
2019-04-19 14:26:05 +02:00
include/: refactor headers to allow kthread.h inclusion in psi_types.h
2019-05-14 19:52:48 -07:00
Second PPC KVM update for 5.2
2019-05-15 23:39:38 +02:00
kernel/latencytop.c: rename clear_all_latency_tracing to clear_tsk_latency_tracing
2019-05-14 19:52:49 -07:00
treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 18
2019-05-21 11:28:46 +02:00
lightnvm: track inflight target creations
2019-05-06 10:19:19 -06:00
- Improve DM snapshot target's scalability by using finer grained
2019-05-16 15:55:48 -07:00
list_bl: Add hlist_bl_add_before/behind helpers
2019-04-18 16:18:27 -04:00
lib/list_sort: simplify and remove MAX_LIST_LENGTH_BITS
2019-05-14 19:52:49 -07:00
treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 13
2019-05-21 11:28:45 +02:00
Merge branch 'locking-core-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
2019-05-06 13:50:15 -07:00
Merge branch 'work.mount-syscalls' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs
2019-05-07 20:17:51 -07:00
net: phy: marvell: add new default led configure for m88e151x
2019-04-23 10:40:32 -07:00
IOMMU Updates for Linux v5.2
2019-05-13 09:23:18 -04:00
net: mdio: rename mdio_device reset to reset_gpio
2019-04-18 17:42:54 -07:00
mm: memblock: make keeping memblock memory opt-in rather than opt-out
2019-05-14 09:47:50 -07:00
mm: memcontrol: fix recursive statistics correctness & scalabilty
2019-05-14 19:52:53 -07:00
mm/memory_hotplug: make unregister_memory_section() never fail
2019-05-14 09:47:49 -07:00
mm/memory_hotplug: make __remove_pages() and arch_remove_memory() never fail
2019-05-14 09:47:50 -07:00
treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 13
2019-05-21 11:28:45 +02:00
mm: move buddy list manipulations into helpers
2019-05-14 19:52:48 -07:00
mm: memcontrol: track LRU counts in the vmstats array
2019-05-14 09:47:46 -07:00
mm: move buddy list manipulations into helpers
2019-05-14 19:52:48 -07:00
mm/mmu_notifier: mmu_notifier_range_update_to_read_only() helper
2019-05-14 09:47:49 -07:00
mm: maintain randomization of page free lists
2019-05-14 19:52:48 -07:00
Modules updates for v5.2
2019-05-14 10:55:54 -07:00
moduleparam: Save information about built-in modules in separate file
2019-05-07 21:50:24 +09:00
Merge branch 'irq-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
2019-05-19 10:58:45 -07:00
net: rework SIOCGSTAMP ioctl handling
2019-04-19 14:07:40 -07:00
net/tls: move definition of tls ops into net/tls.h
2019-04-27 16:52:21 -04:00
netfilter: slightly optimize nf_inet_addr_mask
2019-05-06 01:18:58 +02:00
NFS: Replace custom error reporting mechanism with generic one
2019-04-25 14:18:14 -04:00
NFS: Store the credential of the mount process in the nfs_server
2019-04-26 16:11:54 -04:00
NFS: Remove redundant open context from nfs_page
2019-04-25 14:18:15 -04:00
scsi: scsi_transport_fc: nvme: display FC-NVMe port roles
2019-04-12 20:09:34 -04:00
nvme-rdma: fix typo in struct comment
2019-04-25 16:51:42 +02:00
nvme: fix typos in nvme status code values
2019-05-14 17:19:47 +02:00
nvmem: core: add nvmem_cell_read_u16
2019-04-25 19:43:12 +02:00
of: fix clang -Wunsequenced for be32_to_cpu()
2019-05-01 14:26:36 -05:00
of_net: fix of_get_mac_address retval if compiled without CONFIG_OF
2019-05-19 10:35:20 -07:00
crypto: ecrdsa - add EC-RDSA (GOST 34.10) algorithm
2019-04-18 22:15:02 +08:00
Merge branch 'core-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
2019-05-16 10:29:00 -07:00
lib: Add support for generic packing operations
2019-05-03 10:49:17 -04:00
mm: delete find_get_entries_tag
2019-05-14 09:47:51 -07:00
PCI: al: Add Amazon Annapurna Labs PCIe host controller driver
2019-04-25 16:33:07 -05:00
PCI: endpoint: Add support to specify alignment for buffers allocated to BARs
2019-04-15 13:24:02 +01:00
PCI: endpoint: Add support to specify alignment for buffers allocated to BARs
2019-04-15 13:24:02 +01:00
pci-v5.2-changes
2019-05-14 10:30:10 -07:00
PCI/ACPI: Implement _HPX Type 3 Setting Record
2019-04-23 16:38:09 -05:00
treewide: Add SPDX license identifier for missed files
2019-05-21 10:50:45 +02:00
* ARM: support for SVE and Pointer Authentication in guests, PMU improvements
2019-05-17 10:33:30 -07:00
net: phy: improve resuming from hibernation
2019-05-04 00:50:58 -04:00
clone: add CLONE_PIDFD
2019-05-07 14:31:03 +02:00
There tracing fixes:
2019-04-26 11:09:55 -07:00
treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 10
2019-05-21 11:28:45 +02:00
PM / Domains: Add GENPD_FLAG_RPM_ALWAYS_ON flag
2019-05-13 10:51:31 +02:00
fs/select: avoid clang stack usage warning
2019-05-14 19:52:48 -07:00
power: supply: core: Add POWER_SUPPLY_HEALTH_OVERCURRENT constant
2019-05-03 22:15:51 +02:00
pps: pps-gpio PPS ECHO implementation
2019-05-14 19:52:51 -07:00
panic: avoid the extra noise dmesg
2019-05-14 19:52:51 -07:00
device property: Add fwnode_graph_get_endpoint_by_id()
2019-04-18 16:44:05 +02:00
kernel/sched/psi.c: expose pressure metrics on root cgroup
2019-05-14 19:52:48 -07:00
psi: introduce psi monitor
2019-05-14 19:52:48 -07:00
treewide: remove SPDX "WITH Linux-syscall-note" from kernel-space headers
2019-05-14 19:52:48 -07:00
s390 updates for the 5.2 merge window #2
2019-05-17 10:08:59 -07:00
panic/reboot: allow specifying reboot_mode for panic only
2019-05-14 19:52:51 -07:00
rhashtable: Remove RCU marking from rhash_lock_head
2019-05-16 09:45:20 -07:00
rtc: drop set_mms and set_mmss64
2019-05-08 22:14:36 +02:00
treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 17
2019-05-21 11:28:46 +02:00
treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 17
2019-05-21 11:28:46 +02:00
lib/scatterlist: Remove leftover from sg_page_iter comment
2019-05-07 12:47:47 -03:00
include/: refactor headers to allow kthread.h inclusion in psi_types.h
2019-05-14 19:52:48 -07:00
Merge branch 'work.mount-syscalls' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs
2019-05-07 20:17:51 -07:00
block: switch all files cleared marked as GPLv2 to SPDX tags
2019-04-30 16:11:57 -06:00
vt: selection: allow functions to be called from inside kernel
2019-04-19 15:09:10 +02:00
docs: serial: convert docs to ReST and rename to *.rst
2019-04-25 11:37:42 +02:00
x86/mm/cpa: Add set_direct_map_*() functions
2019-04-30 12:37:56 +02:00
mm: swapoff: shmem_unuse() stop eviction without igrab()
2019-04-19 09:46:04 -07:00
net: test nouarg before dereferencing zerocopy pointers
2019-05-16 12:17:50 -07:00
slab: remove /proc/slab_allocators
2019-05-16 15:51:55 -07:00
smpboot: Place the __percpu annotation correctly
2019-04-24 12:17:08 +02:00
lib/stackdepot: Remove obsolete functions
2019-04-29 12:37:57 +02:00
stacktrace: Provide common infrastructure
2019-04-29 12:37:57 +02:00
switchtec: Increase PFF limit from 48 to 255
2019-04-17 17:20:01 -05:00
treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 18
2019-05-21 11:28:46 +02:00
Merge branch 'next' of git://git.kernel.org/pub/scm/linux/kernel/git/rzhang/linux
2019-05-16 16:16:18 -07:00
thunderbolt: Add XDomain UUID exchange support
2019-04-18 11:18:53 +03:00
Power management updates for 5.2-rc1
2019-05-06 19:40:31 -07:00
bpf: add writable context for raw tracepoints
2019-04-26 19:04:19 -07:00
iov_iter: fix iov_iter_type
2019-05-01 08:38:47 -06:00
unicode: implement higher level API for string handling
2019-04-25 13:51:22 -04:00
uprobes: Initialize uprobes earlier
2019-04-30 12:37:51 +02:00
USB/PHY patches for 5.2-rc1
2019-05-08 10:03:52 -07:00
userfaultfd/sysctl: add vm.unprivileged_userfaultfd
2019-05-14 09:47:45 -07:00
virtio/s390: DMA support for virtio-ccw
2019-05-12 13:11:36 -04:00
mm/vmalloc.c: keep track of free blocks for vmap allocation
2019-05-18 15:52:26 -07:00
mm: move recent_rotated pages calculation to shrink_inactive_list()
2019-05-14 09:47:45 -07:00
Add wait_var_event_interruptible()
2019-05-15 17:35:54 +01:00
