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Johannes Weiner dc50537bdd kernel: cgroup: add poll file operation 
Cgroup has a standardized poll/notification mechanism for waking all
pollers on all fds when a filesystem node changes.  To allow polling for
custom events, add a .poll callback that can override the default.

This is in preparation for pollable cgroup pressure files which have
per-fd trigger configurations.

Link: http://lkml.kernel.org/r/20190124211518.244221-3-surenb@google.com
Signed-off-by: Johannes Weiner <hannes@cmpxchg.org>
Signed-off-by: Suren Baghdasaryan <surenb@google.com>
Cc: Dennis Zhou <dennis@kernel.org>
Cc: Ingo Molnar <mingo@redhat.com>
Cc: Jens Axboe <axboe@kernel.dk>
Cc: Li Zefan <lizefan@huawei.com>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Tejun Heo <tj@kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2019-03-05 21:07:17 -08:00
..
bpf
Merge git://git.kernel.org/pub/scm/linux/kernel/git/bpf/bpf-next
2019-03-04 10:14:31 -08:00
cgroup
kernel: cgroup: add poll file operation
2019-03-05 21:07:17 -08:00
configs
kvm_config: add CONFIG_VIRTIO_MENU
2018-10-24 20:55:56 -04:00
debug
kdb: use bool for binary state indicators
2018-12-30 08:31:52 +00:00
dma
swiotlb: clear io_tlb_start and io_tlb_end in swiotlb_exit
2019-01-16 09:59:17 -05:00
events
perf/core: Fix impossible ring-buffer sizes warning
2019-02-13 08:05:02 +01:00
gcov
…
irq
genirq/irqdesc: Fix double increment in alloc_descs()
2019-01-18 00:43:09 +01:00
livepatch
livepatch: Replace synchronize_sched() with synchronize_rcu()
2018-12-01 12:38:50 -08:00
locking
futex: Handle early deadlock return correctly
2019-02-08 13:00:36 +01:00
power
PM/Hibernate: exclude all PageOffline() pages
2019-03-05 21:07:14 -08:00
printk
Remove 'type' argument from access_ok() function
2019-01-03 18:57:57 -08:00
rcu
rcutorture: Don't do busted forward-progress testing
2018-12-01 12:45:42 -08:00
sched
mm, compaction: capture a page under direct compaction
2019-03-05 21:07:17 -08:00
time
posix-cpu-timers: Unbreak timer rearming
2019-01-15 16:34:37 +01:00
trace
Two more tracing fixes
2019-02-18 09:40:16 -08:00
.gitignore
…
acct.c
…
async.c
…
audit_fsnotify.c
audit: minimize our use of audit_log_format()
2018-11-26 18:40:00 -05:00
audit_tree.c
audit: minimize our use of audit_log_format()
2018-11-26 18:40:00 -05:00
audit_watch.c
audit: minimize our use of audit_log_format()
2018-11-26 18:40:00 -05:00
audit.c
audit: remove duplicated include from audit.c
2018-12-14 12:09:30 -05:00
audit.h
audit: use current whenever possible
2018-11-26 18:41:21 -05:00
auditfilter.c
…
auditsc.c
audit: use current whenever possible
2018-11-26 18:41:21 -05:00
backtracetest.c
…
bounds.c
kbuild: fix kernel/bounds.c 'W=1' warning
2018-10-31 08:54:14 -07:00
capability.c
…
compat.c
make 'user_access_begin()' do 'access_ok()'
2019-01-04 12:56:09 -08:00
configs.c
…
context_tracking.c
…
cpu_pm.c
…
cpu.c
cpu/hotplug: Fix "SMT disabled by BIOS" detection for KVM
2019-01-30 19:27:00 +01:00
crash_core.c
kexec: export PG_offline to VMCOREINFO
2019-03-05 21:07:14 -08:00
crash_dump.c
…
cred.c
cred: export get_task_cred().
2018-12-19 13:52:44 -05:00
delayacct.c
delayacct: track delays from thrashing cache pages
2018-10-26 16:26:32 -07:00
dma.c
…
elfcore.c
…
exec_domain.c
…
exit.c
kernel/exit.c: release ptraced tasks before zap_pid_ns_processes
2019-02-01 15:46:23 -08:00
extable.c
…
fail_function.c
kernel/fail_function.c: remove meaningless null pointer check before debugfs_remove_recursive
2018-10-31 08:54:12 -07:00
fork.c
Merge branch 'akpm' (patches from Andrew)
2019-01-08 18:58:29 -08:00
freezer.c
PM / reboot: Eliminate race between reboot and suspend
2018-08-06 12:35:20 +02:00
futex.c
futex: Handle early deadlock return correctly
2019-02-08 13:00:36 +01:00
groups.c
…
hung_task.c
kernel/hung_task.c: break RCU locks based on jiffies
2019-01-04 13:13:45 -08:00
iomem.c
…
irq_work.c
…
jump_label.c
jump_label: move 'asm goto' support test to Kconfig
2019-01-06 09:46:51 +09:00
kallsyms.c
kallsyms: reduce size a little on 64-bit
2018-09-10 22:54:33 +09:00
kcmp.c
…
Kconfig.freezer
…
Kconfig.hz
…
Kconfig.locks
bpf: introduce bpf_spin_lock
2019-02-01 20:55:38 +01:00
Kconfig.preempt
kconfig: warn no new line at end of file
2018-12-15 17:44:35 +09:00
kcov.c
kernel/kcov.c: mark write_comp_data() as notrace
2019-01-04 13:13:47 -08:00
kexec_core.c
mm: convert totalram_pages and totalhigh_pages variables to atomic
2018-12-28 12:11:47 -08:00
kexec_file.c
kexec_file: kexec_walk_memblock() only walks a dedicated region at kdump
2018-12-06 14:38:50 +00:00
kexec_internal.h
…
kexec.c
kexec: add call to LSM hook in original kexec_load syscall
2018-07-16 12:31:57 -07:00
kmod.c
…
kprobes.c
Merge branch 'perf-core-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
2018-12-26 14:45:18 -08:00
ksysfs.c
…
kthread.c
mm: replace all open encodings for NUMA_NO_NODE
2019-03-05 21:07:14 -08:00
latencytop.c
…
Makefile
kbuild: change filechk to surround the given command with { }
2019-01-06 09:46:51 +09:00
memremap.c
mm/hmm: fix memremap.h, move dev_page_fault_t callback to hmm
2018-12-28 12:11:52 -08:00
module_signing.c
modsign: use all trusted keys to verify module signature
2018-11-07 14:41:41 +01:00
module-internal.h
…
module.c
jump_label: move 'asm goto' support test to Kconfig
2019-01-06 09:46:51 +09:00
notifier.c
…
nsproxy.c
…
padata.c
padata: clean an indentation issue, remove extraneous space
2018-11-16 14:11:04 +08:00
panic.c
kernel/sysctl: add panic_print into sysctl
2019-01-04 13:13:47 -08:00
params.c
…
pid_namespace.c
signal: Use group_send_sig_info to kill all processes in a pid namespace
2018-09-16 16:08:25 +02:00
pid.c
Fix failure path in alloc_pid()
2018-12-28 12:42:30 -08:00
profile.c
mm: remove include/linux/bootmem.h
2018-10-31 08:54:16 -07:00
ptrace.c
Remove 'type' argument from access_ok() function
2019-01-03 18:57:57 -08:00
range.c
…
reboot.c
kernel/reboot.c: export pm_power_off_prepare
2018-09-11 16:13:24 +01:00
relay.c
relay: check return of create_buf_file() properly
2019-01-31 14:01:48 +01:00
resource.c
kernel, resource: check for IORESOURCE_SYSRAM in release_mem_region_adjustable
2018-12-28 12:11:49 -08:00
rseq.c
Remove 'type' argument from access_ok() function
2019-01-03 18:57:57 -08:00
seccomp.c
seccomp, bpf: disable preemption before calling into bpf prog
2019-02-22 00:14:19 +01:00
signal.c
signal: Restore the stop PTRACE_EVENT_EXIT
2019-02-13 08:31:41 -06:00
smp.c
cpu/hotplug: Fix "SMT disabled by BIOS" detection for KVM
2019-01-30 19:27:00 +01:00
smpboot.c
…
smpboot.h
…
softirq.c
Merge branch 'irq-core-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
2018-10-25 11:43:47 -07:00
stackleak.c
stackleak: Mark stackleak_track_stack() as notrace
2018-12-05 19:31:44 -08:00
stacktrace.c
…
stop_machine.c
Merge branch 'sched-core-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
2018-08-13 11:25:07 -07:00
sys_ni.c
ipc: introduce ksys_ipc()/compat_ksys_ipc() for s390
2019-01-18 09:33:18 +01:00
sys.c
kernel/sys.c: Clarify that UNAME26 does not generate unique versions anymore
2019-01-14 10:38:03 +12:00
sysctl_binary.c
kernel/sysctl: add panic_print into sysctl
2019-01-04 13:13:47 -08:00
sysctl.c
mm: remove sysctl_extfrag_handler()
2019-03-05 21:07:15 -08:00
task_work.c
…
taskstats.c
…
test_kprobes.c
…
torture.c
torture: Remove unnecessary "ret" variables
2018-12-01 12:45:35 -08:00
tracepoint.c
tracing: Replace synchronize_sched() and call_rcu_sched()
2018-11-27 09:21:41 -08:00
tsacct.c
…
ucount.c
…
uid16.c
…
uid16.h
…
umh.c
umh: add exit routine for UMH process
2019-01-11 18:05:40 -08:00
up.c
smp,cpumask: introduce on_each_cpu_cond_mask
2018-10-09 16:51:11 +02:00
user_namespace.c
userns: also map extents in the reverse map to kernel IDs
2018-11-07 23:51:16 -06:00
user-return-notifier.c
…
user.c
userns: use irqsave variant of refcount_dec_and_lock()
2018-08-22 10:52:47 -07:00
utsname_sysctl.c
sys: don't hold uts_sem while accessing userspace memory
2018-08-11 02:05:53 -05:00
utsname.c
…
watchdog_hld.c
watchdog: Mark watchdog touch functions as notrace
2018-08-30 12:56:40 +02:00
watchdog.c
watchdog: Mark watchdog touch functions as notrace
2018-08-30 12:56:40 +02:00
workqueue_internal.h
psi: fix aggregation idle shut-off
2019-02-01 15:46:23 -08:00
workqueue.c
psi: fix aggregation idle shut-off
2019-02-01 15:46:23 -08:00