kernel-hacking-2024-linux-s.../kernel
Jens Axboe 12a4be50af futex: factor out the futex wake handling
In preparation for having another waker that isn't futex_wake_mark(),
add a wake handler in futex_q. No extra data is associated with the
handler outside of struct futex_q itself. futex_wake_mark() is defined as
the standard wakeup helper, now set through futex_q_init like other
defaults.

Normal sync futex waiting relies on wake_q holding tasks that should
be woken up. This is what futex_wake_mark() does, it'll unqueue the
futex and add the associated task to the wake queue. For async usage of
futex waiting, rather than having tasks sleeping on the futex, we'll
need to deal with a futex wake differently. For the planned io_uring
case, that means posting a completion event for the task in question.
Having a definable wake handler can help support that use case.

Acked-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Signed-off-by: Jens Axboe <axboe@kernel.dk>
2023-09-29 02:36:50 -06:00
..
bpf Merge git://git.kernel.org/pub/scm/linux/kernel/git/bpf/bpf 2023-09-16 11:16:00 +01:00
cgroup cgroup: fix build when CGROUP_SCHED is not enabled 2023-09-02 08:27:17 -07:00
configs Kbuild updates for v6.6 2023-09-05 11:01:47 -07:00
debug printk changes for 6.6 2023-09-04 13:20:19 -07:00
dma Revert "dma-contiguous: check for memory region overlap" 2023-09-08 05:58:32 -03:00
entry entry: Remove empty addr_limit_user_check() 2023-08-23 10:32:39 +02:00
events powerpc updates for 6.6 2023-08-31 12:43:10 -07:00
futex futex: factor out the futex wake handling 2023-09-29 02:36:50 -06:00
gcov
irq Boring updates for the interrupt subsystem: 2023-08-28 14:33:11 -07:00
kcsan
livepatch
locking locking/ww_mutex/test: Make sure we bail out instead of livelock 2023-09-22 09:43:41 +02:00
module module/decompress: use vmalloc() for zstd decompression workspace 2023-08-29 09:39:08 -07:00
power PM: hibernate: Fix the exclusive get block device in test_resume mode 2023-09-12 11:45:15 +02:00
printk Revert "printk: export symbols for debug modules" 2023-09-07 14:19:42 +02:00
rcu TTY/Serial driver changes for 6.6-rc1 2023-09-01 09:38:00 -07:00
sched Merge branch 'locking/core' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip into io_uring-futex 2023-09-28 07:47:07 -06:00
time Fix false positive "softirq work is pending" messages on -rt 2023-09-02 09:01:48 -07:00
trace Tracing fixes for 6.6-rc2: 2023-09-24 13:55:34 -07:00
.gitignore
acct.c audit/stable-6.6 PR 20230829 2023-08-30 08:17:35 -07:00
async.c
audit.c
audit.h
audit_fsnotify.c
audit_tree.c
audit_watch.c
auditfilter.c
auditsc.c Including fixes from netfilter and bpf. 2023-09-07 18:33:07 -07:00
backtracetest.c
bounds.c
capability.c
cfi.c
compat.c
configs.c
context_tracking.c
cpu.c cpu/hotplug: Prevent self deadlock on CPU hot-unplug 2023-08-30 12:24:22 +02:00
cpu_pm.c
crash_core.c - An extensive rework of kexec and crash Kconfig from Eric DeVolder 2023-08-29 14:53:51 -07:00
crash_dump.c
cred.c
delayacct.c
dma.c
exec_domain.c
exit.c exit: add internal include file with helpers 2023-09-21 12:03:50 -06:00
exit.h exit: add internal include file with helpers 2023-09-21 12:03:50 -06:00
extable.c
fail_function.c
fork.c percpu: changes for v6.6 2023-09-01 15:44:45 -07:00
freezer.c
gen_kheaders.sh
groups.c
hung_task.c
iomem.c kernel/iomem.c: remove __weak ioremap_cache helper 2023-08-21 13:37:28 -07:00
irq_work.c
jump_label.c
kallsyms.c kallsyms: Change func signature for cleanup_symbol_name() 2023-08-25 15:00:36 -07:00
kallsyms_internal.h
kallsyms_selftest.c Modules changes for v6.6-rc1 2023-08-29 17:32:32 -07:00
kallsyms_selftest.h
kcmp.c
Kconfig.freezer
Kconfig.hz
Kconfig.kexec crash: hotplug support for kexec_load() 2023-08-24 16:25:14 -07:00
Kconfig.locks
Kconfig.preempt
kcov.c
kexec.c crash: hotplug support for kexec_load() 2023-08-24 16:25:14 -07:00
kexec_core.c crash: add generic infrastructure for crash hotplug support 2023-08-24 16:25:13 -07:00
kexec_elf.c
kexec_file.c integrity-v6.6 2023-08-30 09:16:56 -07:00
kexec_internal.h
kheaders.c
kprobes.c kernel: kprobes: Use struct_size() 2023-08-23 09:38:17 +09:00
ksyms_common.c
ksysfs.c crash: hotplug support for kexec_load() 2023-08-24 16:25:14 -07:00
kthread.c
latencytop.c
Makefile
module_signature.c
notifier.c
nsproxy.c nsproxy: Convert nsproxy.count to refcount_t 2023-08-21 11:29:12 -07:00
padata.c
panic.c panic: Reenable preemption in WARN slowpath 2023-09-15 11:28:08 +02:00
params.c
pid.c pidfd: prevent a kernel-doc warning 2023-09-19 13:21:33 -07:00
pid_namespace.c memfd: replace ratcheting feature from vm.memfd_noexec with hierarchy 2023-08-21 13:37:59 -07:00
pid_sysctl.h memfd: replace ratcheting feature from vm.memfd_noexec with hierarchy 2023-08-21 13:37:59 -07:00
profile.c
ptrace.c
range.c
reboot.c
regset.c
relay.c
resource.c
resource_kunit.c
rseq.c
scftorture.c
scs.c
seccomp.c
signal.c
smp.c
smpboot.c
smpboot.h
softirq.c
stackleak.c
stacktrace.c
static_call.c
static_call_inline.c
stop_machine.c
sys.c
sys_ni.c futex: Add sys_futex_requeue() 2023-09-21 19:22:10 +02:00
sysctl-test.c
sysctl.c
task_work.c task_work: add kerneldoc annotation for 'data' argument 2023-09-19 13:21:32 -07:00
taskstats.c
torture.c
tracepoint.c
tsacct.c
ucount.c
uid16.c
uid16.h
umh.c
up.c
user-return-notifier.c
user.c
user_namespace.c
usermode_driver.c
utsname.c
utsname_sysctl.c
vhost_task.c
watch_queue.c
watchdog.c
watchdog_buddy.c
watchdog_perf.c
workqueue.c workqueue: fix data race with the pwq->stats[] increment 2023-08-29 09:52:16 -10:00
workqueue_internal.h