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Crystal Wood c99303a2d2 genirq: Wake interrupt threads immediately when changing affinity 
The affinity setting of interrupt threads happens in the context of the
thread when the thread is woken up by an hard interrupt. As this can be an
arbitrary after changing the affinity, the thread can become runnable on an
isolated CPU and cause isolation disruption.

Avoid this by checking the set affinity request in wait_for_interrupt() and
waking the threads immediately when the affinity is modified.

Note that this is of the most benefit on systems where the interrupt
affinity itself does not need to be deferred to the interrupt handler, but
even where that's not the case, the total dirsuption will be less.

Signed-off-by: Crystal Wood <crwood@redhat.com>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Link: https://lore.kernel.org/r/20240122235353.15235-1-crwood@redhat.com
 		2024-02-19 11:43:46 +01:00
..
bpf bpf: enforce types for __arg_ctx-tagged arguments in global subprogs 2024-01-17 20:20:06 -08:00
cgroup Driver core changes for 6.8-rc1 2024-01-18 09:48:40 -08:00
configs hardening: Provide Kconfig fragments for basic options 2023-09-22 09:50:55 -07:00
debug kdb: Fix a potential buffer overflow in kdb_local() 2024-01-17 17:19:06 +00:00
dma dma-mapping fixes for Linux 6.8 2024-01-18 16:49:34 -08:00
entry entry: Move syscall_enter_from_user_mode() to header file 2023-12-21 23:12:18 +01:00
events Many singleton patches against the MM code. The patch series which 2024-01-09 11:18:47 -08:00
futex plist: Split out plist_types.h 2023-12-20 19:26:31 -05:00
gcov gcov: annotate struct gcov_iterator with __counted_by 2023-10-18 14:43:22 -07:00
irq genirq: Wake interrupt threads immediately when changing affinity 2024-02-19 11:43:46 +01:00
kcsan mm: delete checks for xor_unlock_is_negative_byte() 2023-10-18 14:34:17 -07:00
livepatch livepatch: Fix missing newline character in klp_resolve_symbols() 2023-09-20 11:24:18 +02:00
locking RCU pull request for v6.8 2024-01-12 16:35:58 -08:00
module Modules changes for v6.8-rc1 2024-01-10 18:00:18 -08:00
power PM: hibernate: Repair excess function parameter description warning 2023-12-20 19:19:26 +01:00
printk TTY/Serial changes for 6.7-rc1 2023-11-03 15:44:25 -10:00
rcu Merge branches 'doc.2023.12.13a', 'torture.2023.11.23a', 'fixes.2023.12.13a', 'rcu-tasks.2023.12.12b' and 'srcu.2023.12.13a' into rcu-merge.2023.12.13a 2023-12-14 01:21:31 +05:30
sched Fix a cpufreq related performance regression on certain systems, 2024-01-18 11:57:33 -08:00
time Updates for time and clocksources: 2024-01-21 11:14:40 -08:00
trace tracing updates for 6.8: 2024-01-18 14:35:29 -08:00
.gitignore
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Kconfig.freezer
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Kconfig.hz
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Kconfig.kexec kexec: select CRYPTO from KEXEC_FILE instead of depending on it 2023-12-20 13:46:19 -08:00
Kconfig.locks
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Kconfig.preempt
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Makefile kernel/numa.c: Move logging out of numa.h 2023-12-20 19:26:30 -05:00
acct.c fs: rename __mnt_{want,drop}_write*() helpers 2023-09-11 15:05:50 +02:00
async.c header cleanups for 6.8 2024-01-10 16:43:55 -08:00
audit.c audit: Send netlink ACK before setting connection in auditd_set 2023-11-12 22:33:49 -05:00
audit.h audit: correct audit_filter_inodes() definition 2023-07-21 12:17:25 -04:00
audit_fsnotify.c
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audit_tree.c As usual, lots of singleton and doubleton patches all over the tree and 2023-11-02 20:53:31 -10:00
audit_watch.c audit: don't WARN_ON_ONCE(!current->mm) in audit_exe_compare() 2023-11-14 17:34:27 -05:00
auditfilter.c audit: move trailing statements to next line 2023-08-15 18:16:14 -04:00
auditsc.c audit,io_uring: io_uring openat triggers audit reference count underflow 2023-10-13 18:34:46 +02:00
backtracetest.c
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bounds.c
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capability.c lsm: constify the 'target' parameter in security_capget() 2023-08-08 16:48:47 -04:00
cfi.c
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compat.c
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configs.c
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context_tracking.c
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cpu.c slab updates for 6.8 2024-01-09 10:36:07 -08:00
cpu_pm.c
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crash_core.c kernel/crash_core.c: make __crash_hotplug_lock static 2024-01-12 15:20:47 -08:00
crash_dump.c
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cred.c cred: get rid of CONFIG_DEBUG_CREDENTIALS 2023-12-15 14:19:48 -08:00
delayacct.c
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dma.c
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exec_domain.c
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exit.c header cleanups for 6.8 2024-01-10 16:43:55 -08:00
exit.h exit: add internal include file with helpers 2023-09-21 12:03:50 -06:00
extable.c
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fail_function.c
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fork.c IOMMU Updates for Linux v6.8 2024-01-18 15:16:57 -08:00
freezer.c Linux 6.7-rc6 2023-12-23 15:52:13 +01:00
gen_kheaders.sh
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groups.c groups: Convert group_info.usage to refcount_t 2023-09-29 11:28:39 -07:00
hung_task.c
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iomem.c kernel/iomem.c: remove __weak ioremap_cache helper 2023-08-21 13:37:28 -07:00
irq_work.c
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jump_label.c
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kallsyms.c kallsyms: Change func signature for cleanup_symbol_name() 2023-08-25 15:00:36 -07:00
kallsyms_internal.h
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kallsyms_selftest.c Modules changes for v6.6-rc1 2023-08-29 17:32:32 -07:00
kallsyms_selftest.h
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kcmp.c file: convert to SLAB_TYPESAFE_BY_RCU 2023-10-19 11:02:48 +02:00
kcov.c
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kexec.c kernel: kexec: copy user-array safely 2023-10-09 16:59:47 +10:00
kexec_core.c kexec: do syscore_shutdown() in kernel_kexec 2024-01-12 15:20:47 -08:00
kexec_elf.c
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kexec_file.c kexec_file: fix incorrect temp_start value in locate_mem_hole_top_down() 2023-12-29 12:22:25 -08:00
kexec_internal.h
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kheaders.c
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kprobes.c kprobes: consistent rcu api usage for kretprobe holder 2023-12-01 14:53:55 +09:00
ksyms_common.c
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ksysfs.c crash: hotplug support for kexec_load() 2023-08-24 16:25:14 -07:00
kthread.c As usual, lots of singleton and doubleton patches all over the tree and 2023-11-02 20:53:31 -10:00
latencytop.c
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module_signature.c
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notifier.c
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nsproxy.c nsproxy: Convert nsproxy.count to refcount_t 2023-08-21 11:29:12 -07:00
numa.c kernel/numa.c: Move logging out of numa.h 2023-12-20 19:26:30 -05:00
padata.c padata: Fix refcnt handling in padata_free_shell() 2023-10-27 18:04:24 +08:00
panic.c panic: use atomic_try_cmpxchg in panic() and nmi_panic() 2023-10-04 10:41:56 -07:00
params.c params: Fix multi-line comment style 2023-12-01 09:51:44 -08:00
pid.c file: remove __receive_fd() 2023-12-12 14:24:14 +01:00
pid_namespace.c wait: Remove uapi header file from main header file 2023-12-20 19:26:31 -05:00
pid_sysctl.h memfd: replace ratcheting feature from vm.memfd_noexec with hierarchy 2023-08-21 13:37:59 -07:00
profile.c
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ptrace.c Quite a lot of kexec work this time around. Many singleton patches in 2024-01-09 11:46:20 -08:00
range.c
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reboot.c Thermal control updates for 6.8-rc1 2024-01-09 16:20:17 -08:00
regset.c
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relay.c kernel: relay: remove relay_file_splice_read dead code, doesn't work 2023-12-29 12:22:27 -08:00
resource.c Quite a lot of kexec work this time around. Many singleton patches in 2024-01-09 11:46:20 -08:00
resource_kunit.c
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rseq.c
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scftorture.c scftorture: Pause testing after memory-allocation failure 2023-07-14 15:02:57 -07:00
scs.c
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seccomp.c file: remove __receive_fd() 2023-12-12 14:24:14 +01:00
signal.c kernel/signal.c: simplify force_sig_info_to_task(), kill recalc_sigpending_and_wake() 2023-12-10 17:21:32 -08:00
smp.c CSD lock commits for v6.7 2023-10-30 17:56:53 -10:00
smpboot.c kthread: add kthread_stop_put 2023-10-04 10:41:57 -07:00
smpboot.h
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softirq.c sched/core: introduce sched_core_idle_cpu() 2023-07-13 15:21:50 +02:00
stackleak.c
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stacktrace.c stacktrace: fix kernel-doc typo 2023-12-29 12:22:29 -08:00
static_call.c
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static_call_inline.c
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stop_machine.c
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sys.c prctl: Disable prctl(PR_SET_MDWE) on parisc 2023-11-18 19:35:31 +01:00
sys_ni.c lsm/stable-6.8 PR 20240105 2024-01-09 12:57:46 -08:00
sysctl-test.c
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sysctl.c asm-generic updates for v6.7 2023-11-01 15:28:33 -10:00
task_work.c task_work: add kerneldoc annotation for 'data' argument 2023-09-19 13:21:32 -07:00
taskstats.c taskstats: fill_stats_for_tgid: use for_each_thread() 2023-10-04 10:41:57 -07:00
torture.c torture: Print out torture module parameters 2023-09-24 17:24:01 +02:00
tracepoint.c
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tsacct.c
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ucount.c sysctl: Add size to register_sysctl 2023-08-15 15:26:17 -07:00
uid16.c
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uid16.h
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umh.c
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up.c smp: Change function signatures to use call_single_data_t 2023-09-13 14:59:24 +02:00
user-return-notifier.c
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user.c binfmt_misc: enable sandboxed mounts 2023-10-11 08:46:01 -07:00
user_namespace.c mnt_idmapping: decouple from namespaces 2023-11-28 14:08:47 +01:00
usermode_driver.c
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utsname.c
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utsname_sysctl.c
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vhost_task.c
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watch_queue.c watch_queue: fix kcalloc() arguments order 2023-12-21 13:17:54 +01:00
watchdog.c watchdog: if panicking and we dumped everything, don't re-enable dumping 2023-12-29 12:22:30 -08:00
watchdog_buddy.c
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watchdog_perf.c
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workqueue.c Merge branch 'for-6.7-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/tj/wq into for-6.8 2023-11-22 06:18:49 -10:00
workqueue_internal.h workqueue: Drop the special locking rule for worker->flags and worker_pool->flags 2023-08-07 15:57:22 -10:00