Chen Yu e1034dcd77 genirq/matrix: Exclude managed interrupts in irq_matrix_allocated() ... [ Upstream commit a0b0bad105 ] When a CPU is about to be offlined, x86 validates that all active interrupts which are targeted to this CPU can be migrated to the remaining online CPUs. If not, the offline operation is aborted. The validation uses irq_matrix_allocated() to retrieve the number of vectors which are allocated on the outgoing CPU. The returned number of allocated vectors includes also vectors which are associated to managed interrupts. That's overaccounting because managed interrupts are: - not migrated when the affinity mask of the interrupt targets only the outgoing CPU - migrated to another CPU, but in that case the vector is already pre-allocated on the potential target CPUs and must not be taken into account. As a consequence the check whether the remaining online CPUs have enough capacity for migrating the allocated vectors from the outgoing CPU might fail incorrectly. Let irq_matrix_allocated() return only the number of allocated non-managed interrupts to make this validation check correct. [ tglx: Amend changelog and fixup kernel-doc comment ] Fixes: 2f75d9e1c9 ("genirq: Implement bitmap matrix allocator") Reported-by: Wendy Wang <wendy.wang@intel.com> Signed-off-by: Chen Yu <yu.c.chen@intel.com> Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Link: https://lore.kernel.org/r/20231020072522.557846-1-yu.c.chen@intel.com Signed-off-by: Sasha Levin <sashal@kernel.org>		2023-11-20 10:29:16 +01:00
..
bpf	bpf: Address KCSAN report on bpf_lru_list	2023-08-11 11:45:25 +02:00
cgroup	cgroup: Remove duplicates in cgroup v1 tasks file	2023-10-25 11:16:34 +02:00
configs	…
debug	kdb: Make memory allocations more robust	2021-03-04 09:39:31 +01:00
dma	treewide: Remove uninitialized_var() usage	2023-08-11 11:45:01 +02:00
events	perf/core: Fix potential NULL deref	2023-11-08 11:22:17 +01:00
gcov	gcov: add support for checksum field	2023-01-18 11:30:39 +01:00
irq	genirq/matrix: Exclude managed interrupts in irq_matrix_allocated()	2023-11-20 10:29:16 +01:00
livepatch	livepatch: fix race between fork and KLP transition	2022-10-26 13:19:23 +02:00
locking	treewide: Remove uninitialized_var() usage	2023-08-11 11:45:01 +02:00
power	PM: hibernate: Allow hybrid sleep to work with s2idle	2022-11-03 23:52:31 +09:00
printk	printk: fix return value of printk.devkmsg __setup handler	2022-04-15 14:14:45 +02:00
rcu	rcu: Suppress smp_processor_id() complaint in synchronize_rcu_expedited_wait()	2023-03-11 16:31:45 +01:00
sched	sched,idle,rcu: Push rcu_idle deeper into the idle path	2023-10-25 11:16:26 +02:00
time	posix-timers: Ensure timer ID search-loop limit is valid	2023-08-11 11:45:25 +02:00
trace	tracing: relax trace_event_eval_update() execution with cond_resched()	2023-10-25 11:16:55 +02:00
.gitignore	…
Kconfig.freezer	…
Kconfig.hz	…
Kconfig.locks	…
Kconfig.preempt	…
Makefile	elfcore: fix building with clang	2021-02-10 09:21:06 +01:00
acct.c	acct: fix potential integer overflow in encode_comp_t()	2023-01-18 11:30:34 +01:00
async.c	treewide: Remove uninitialized_var() usage	2023-08-11 11:45:01 +02:00
audit.c	treewide: Remove uninitialized_var() usage	2023-08-11 11:45:01 +02:00
audit.h	audit: fix a net reference leak in audit_list_rules_send()	2020-06-22 09:05:13 +02:00
audit_fsnotify.c	audit: fix potential double free on error path from fsnotify_add_inode_mark	2022-09-05 10:26:28 +02:00
audit_tree.c	audit: Embed key into chunk	2019-12-13 08:51:11 +01:00
audit_watch.c	audit: CONFIG_CHANGE don't log internal bookkeeping as an event	2020-10-01 13:14:33 +02:00
auditfilter.c	audit: fix a net reference leak in audit_list_rules_send()	2020-06-22 09:05:13 +02:00
auditsc.c	audit: fix possible soft lockup in __audit_inode_child()	2023-09-23 10:48:04 +02:00
backtracetest.c	…
bounds.c	kbuild: fix kernel/bounds.c 'W=1' warning	2018-11-13 11:08:47 -08:00
capability.c	LSM: generalize flag passing to security_capable	2020-01-23 08:21:29 +01:00
compat.c	sched_getaffinity: don't assume 'cpumask_size()' is fully initialized	2023-04-05 11:15:39 +02:00
configs.c	…
context_tracking.c	…
cpu.c	random: clear fast pool, crng, and batches in cpuhp bring up	2022-06-25 11:49:07 +02:00
cpu_pm.c	kernel/cpu_pm: Fix uninitted local in cpu_pm	2020-06-22 09:05:28 +02:00
crash_core.c	kernel/crash_core.c: print timestamp using time64_t	2018-08-22 10:52:47 -07:00
crash_dump.c	…
cred.c	memcg: account security cred as well to kmemcg	2020-01-09 10:19:00 +01:00
delayacct.c	…
dma.c	…
exec_domain.c	…
exit.c	treewide: Remove uninitialized_var() usage	2023-08-11 11:45:01 +02:00
extable.c	kernel/extable.c: use address-of operator on section symbols	2023-06-09 10:24:02 +02:00
fail_function.c	fail_function: Remove a redundant mutex unlock	2020-11-24 13:27:23 +01:00
fork.c	mm/hugetlb: initialize hugetlb_usage in mm_init	2021-09-22 11:48:09 +02:00
freezer.c	…
futex.c	treewide: Remove uninitialized_var() usage	2023-08-11 11:45:01 +02:00
groups.c	…
hung_task.c	kernel: hung_task.c: disable on suspend	2019-04-20 09:16:02 +02:00
iomem.c	…
irq_work.c	irq_work: Do not raise an IPI when queueing work on the local CPU	2019-05-31 06:46:19 -07:00
jump_label.c	locking/static_key: Fix false positive warnings on concurrent dec/inc	2021-03-04 09:39:30 +01:00
kallsyms.c	kallsyms: Refactor kallsyms_show_value() to take cred	2020-07-16 08:17:26 +02:00
kcmp.c	…
kcov.c	kernel/kcov.c: mark write_comp_data() as notrace	2019-02-12 19:47:20 +01:00
kexec.c	…
kexec_core.c	kexec: fix a memory leak in crash_shrink_memory()	2023-08-11 11:45:06 +02:00
kexec_file.c	kexec: support purgatories with .text.hot sections	2023-06-21 15:39:57 +02:00
kexec_internal.h	…
kmod.c	kmod: make request_module() return an error when autoloading is disabled	2020-04-17 10:48:52 +02:00
kprobes.c	x86/kprobes: Fix arch_check_optimized_kprobe check within optimized_kprobe range	2023-03-11 16:31:51 +01:00
ksysfs.c	…
kthread.c	kthread: prevent deadlock when kthread_mod_delayed_work() races with kthread_cancel_delayed_work_sync()	2021-07-11 12:49:31 +02:00
latencytop.c	…
memremap.c	mm/memory_hotplug: shrink zones when offlining memory	2020-01-29 16:43:27 +01:00
module-internal.h	…
module.c	modules: only allow symbol_get of EXPORT_SYMBOL_GPL modules	2023-09-23 10:47:56 +02:00
module_signing.c	…
notifier.c	x86/mm: split vmalloc_sync_all()	2020-03-25 08:06:13 +01:00
nsproxy.c	…
padata.c	padata: add separate cpuhp node for CPUHP_PADATA_DEAD	2021-08-08 08:54:30 +02:00
panic.c	exit: Use READ_ONCE() for all oops/warn limit reads	2023-02-06 07:49:46 +01:00
params.c	…
pid.c	Fix failure path in alloc_pid()	2019-01-13 09:51:06 +01:00
pid_namespace.c	memcg: enable accounting for pids in nested pid namespaces	2021-09-22 11:48:09 +02:00
profile.c	profiling: fix shift too large makes kernel panic	2022-08-25 11:15:20 +02:00
ptrace.c	ptrace: Reimplement PTRACE_KILL by always sending SIGKILL	2022-06-14 16:59:14 +02:00
range.c	…
reboot.c	reboot: fix overflow parsing reboot cpu number	2020-11-18 19:18:52 +01:00
relay.c	relayfs: fix out-of-bounds access in relay_file_read	2023-05-17 11:13:23 +02:00
resource.c	resource: fix locking in find_next_iomem_res()	2019-09-16 08:22:20 +02:00
rseq.c	…
seccomp.c	seccomp: Invalidate seccomp mode to catch death failures	2022-02-16 12:51:47 +01:00
signal.c	signal handling: don't use BUG_ON() for debugging	2022-07-21 21:09:32 +02:00
smp.c	smp: Fix offline cpu check in flush_smp_call_function_queue()	2022-04-20 09:12:50 +02:00
smpboot.c	kthread: Extract KTHREAD_IS_PER_CPU	2021-02-07 14:48:38 +01:00
smpboot.h	…
softirq.c	…
stacktrace.c	…
stop_machine.c	…
sys.c	prlimit: do_prlimit needs to have a speculation check	2023-01-24 07:11:49 +01:00
sys_ni.c	kernel/sys_ni: add compat entry for fadvise64_64	2022-09-05 10:26:28 +02:00
sysctl.c	proc: proc_skip_spaces() shouldn't think it is working on C strings	2022-12-08 11:18:32 +01:00
sysctl_binary.c	…
task_work.c	…
taskstats.c	taskstats: fix data-race	2020-01-09 10:18:59 +01:00
test_kprobes.c	…
torture.c	…
tracepoint.c	tracepoint: Add tracepoint_probe_register_may_exist() for BPF tracing	2021-07-20 16:15:42 +02:00
tsacct.c	taskstats: Cleanup the use of task->exit_code	2022-02-23 11:58:39 +01:00
ucount.c	…
uid16.c	…
uid16.h	…
umh.c	usermodehelper: reset umask to default before executing user process	2020-10-14 10:31:21 +02:00
up.c	smp: Fix smp_call_function_single_async prototype	2021-05-22 10:59:39 +02:00
user-return-notifier.c	…
user.c	userns: use irqsave variant of refcount_dec_and_lock()	2018-08-22 10:52:47 -07:00
user_namespace.c	userns: also map extents in the reverse map to kernel IDs	2018-11-13 11:09:00 -08:00
utsname.c	…
utsname_sysctl.c	…
watchdog.c	watchdog: export lockup_detector_reconfigure	2022-08-25 11:15:46 +02:00
watchdog_hld.c	watchdog/perf: more properly prevent false positives with turbo modes	2023-08-11 11:45:06 +02:00
workqueue.c	workqueue: Override implicit ordered attribute in workqueue_apply_unbound_cpumask()	2023-10-25 11:16:26 +02:00
workqueue_internal.h	…