Linus Torvalds
b5b1404d08
init: rename and re-order boot_cpu_state_init() ...
This is purely a preparatory patch for upcoming changes during the 4.19
merge window.
We have a function called "boot_cpu_state_init()" that isn't really
about the bootup cpu state: that is done much earlier by the similarly
named "boot_cpu_init()" (note lack of "state" in name).
This function initializes some hotplug CPU state, and needs to run after
the percpu data has been properly initialized. It even has a comment to
that effect.
Except it _doesn't_ actually run after the percpu data has been properly
initialized. On x86 it happens to do that, but on at least arm and
arm64, the percpu base pointers are initialized by the arch-specific
'smp_prepare_boot_cpu()' hook, which ran _after_ boot_cpu_state_init().
This had some unexpected results, and in particular we have a patch
pending for the merge window that did the obvious cleanup of using
'this_cpu_write()' in the cpu hotplug init code:
- per_cpu_ptr(&cpuhp_state, smp_processor_id())->state = CPUHP_ONLINE;
+ this_cpu_write(cpuhp_state.state, CPUHP_ONLINE);
which is obviously the right thing to do. Except because of the
ordering issue, it actually failed miserably and unexpectedly on arm64.
So this just fixes the ordering, and changes the name of the function to
be 'boot_cpu_hotplug_init()' to make it obvious that it's about cpu
hotplug state, because the core CPU state was supposed to have already
been done earlier.
Marked for stable, since the (not yet merged) patch that will show this
problem is marked for stable.
Reported-by: Vlastimil Babka <vbabka@suse.cz>
Reported-by: Mian Yousaf Kaukab <yousaf.kaukab@suse.com>
Suggested-by: Catalin Marinas <catalin.marinas@arm.com>
Acked-by: Thomas Gleixner <tglx@linutronix.de>
Cc: Will Deacon <will.deacon@arm.com>
Cc: stable@kernel.org
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2018-08-12 12:19:42 -07:00
xdp: fix bug in devmap teardown code path
2018-08-09 21:50:44 +02:00
docs: Fix some broken references
2018-06-15 18:10:01 -03:00
kconfig: tinyconfig: remove stale stack protector fixups
2018-06-15 07:15:28 +09:00
treewide: kzalloc() -> kcalloc()
2018-06-12 16:19:22 -07:00
swiotlb: export swiotlb_dma_ops
2018-06-28 14:00:40 +02:00
perf/core: Fix crash when using HW tracing kernel filters
2018-07-25 11:46:22 +02:00
gcov: remove CONFIG_GCOV_FORMAT_AUTODETECT
2018-06-08 18:56:02 +09:00
genirq: Make force irq threading setup more robust
2018-08-03 15:19:01 +02:00
livepatch: Allow to call a custom callback when freeing shadow variables
2018-04-17 13:42:48 +02:00
locking/rtmutex: Allow specifying a subclass for nested locking
2018-07-25 11:22:19 +02:00
fix a series of Documentation/ broken file name references
2018-06-15 18:10:01 -03:00
Printk changes for 4.18
2018-06-06 16:04:55 -07:00
treewide: Use array_size() in vmalloc()
2018-06-12 16:19:22 -07:00
sched/rt: Restore rt_runtime after disabling RT_RUNTIME_SHARE
2018-07-25 11:29:08 +02:00
nohz: Fix local_timer_softirq_pending()
2018-07-31 22:08:44 +02:00
tracing: Quiet gcc warning about maybe unused link variable
2018-07-25 22:33:50 -04:00
kernel/async.c: revert "async: simplify lowest_in_progress()"
2018-02-06 18:32:44 -08:00
audit: use inline function to get audit context
2018-05-14 17:24:18 -04:00
audit: track the owner of the command mutex ourselves
2018-02-23 11:22:22 -05:00
fsnotify: add fsnotify_add_inode_mark() wrappers
2018-05-18 14:58:22 +02:00
fsnotify: add fsnotify_add_inode_mark() wrappers
2018-05-18 14:58:22 +02:00
\n
2018-06-17 05:06:18 +09:00
audit: use existing session info function
2018-05-18 15:47:54 -04:00
audit: fix potential null dereference 'context->module.name'
2018-07-30 18:09:37 -04:00
Merge branch 'timers-core-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
2018-06-04 20:27:54 -07:00
init: rename and re-order boot_cpu_state_init()
2018-08-12 12:19:42 -07:00
mm: split page_type out from _mapcount
2018-06-07 17:34:37 -07:00
delayacct: Use raw_spinlocks
2018-04-27 14:34:51 +02:00
proc: introduce proc_create_single{,_data}
2018-05-16 07:23:35 +02:00
proc: introduce proc_create_single{,_data}
2018-05-16 07:23:35 +02:00
kernel: use kernel_wait4() instead of sys_wait4()
2018-04-02 20:14:51 +02:00
extable: Make init_kernel_text() global
2018-02-21 16:54:06 +01:00
treewide: kmalloc() -> kmalloc_array()
2018-06-12 16:19:22 -07:00
mm: introduce vma_init()
2018-07-26 19:38:03 -07:00
pids: introduce find_get_task_by_vpid() helper
2018-02-06 18:32:46 -08:00
kernel/hung_task.c: show all hung tasks before panic
2018-06-07 17:34:39 -07:00
memremap: split devm_memremap_pages() and memremap() infrastructure
2018-05-15 23:08:33 -07:00
jump_label: Disable jump labels in __exit code
2018-03-20 08:57:17 +01:00
Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/pmladek/printk
2018-02-01 13:36:15 -08:00
sched/core / kcov: avoid kcov_area during task switch
2018-06-15 07:55:24 +09:00
kexec: call do_kexec_load() in compat syscall directly
2018-04-02 20:15:01 +02:00
kexec: yield to scheduler when loading kimage segments
2018-06-15 07:55:24 +09:00
treewide: Use array_size() in vzalloc()
2018-06-12 16:19:22 -07:00
kprobes: Fix random address output of blacklist file
2018-04-25 10:27:56 -04:00
kthread, tracing: Don't expose half-written comm when creating kthreads
2018-07-26 09:59:33 -04:00
dma-mapping: move all DMA mapping code to kernel/dma
2018-06-14 08:50:37 +02:00
mm: fix exports that inadvertently make put_page() EXPORT_SYMBOL_GPL
2018-07-26 19:38:03 -07:00
Modules updates for v4.18
2018-06-16 07:36:39 +09:00
Kbuild: rename CC_STACKPROTECTOR[_STRONG] config variables
2018-06-14 12:21:18 +09:00
kernel/params.c: downgrade warning for unsafe parameters
2018-04-11 10:28:37 -07:00
xarray: add the xa_lock to the radix_tree_root
2018-04-11 10:28:39 -07:00
Merge branch 'userns-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/ebiederm/user-namespace
2018-04-03 19:15:32 -07:00
pids: introduce find_get_task_by_vpid() helper
2018-02-06 18:32:46 -08:00
kernel/relay.c: change return type to vm_fault_t
2018-06-15 07:55:24 +09:00
libnvdimm for 4.18
2018-06-08 17:21:52 -07:00
rseq: uapi: Declare rseq_cs field as union, update includes
2018-07-10 22:18:52 +02:00
audit/stable-4.18 PR 20180605
2018-06-06 16:34:00 -07:00
signal: Remove no longer required irqsave/restore
2018-06-10 06:14:01 +02:00
nohz: Fix missing tick reprogram when interrupting an inline softirq
2018-08-03 15:52:10 +02:00
stop_machine: Disable preemption after queueing stopper threads
2018-07-25 11:25:08 +02:00
mm: introduce arg_lock to protect arg_start|end and env_start|end in mm_struct
2018-06-07 17:34:34 -07:00
Merge branch 'core-rseq-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
2018-06-10 10:17:09 -07:00
treewide: kzalloc() -> kcalloc()
2018-06-12 16:19:22 -07:00
staging: irda: remove remaining remants of irda code removal
2018-04-16 11:26:49 +02:00
pids: introduce find_get_task_by_vpid() helper
2018-02-06 18:32:46 -08:00
rcu: Rename cond_resched_rcu_qs() to cond_resched_tasks_rcu_qs()
2018-05-15 10:27:29 -07:00
tracepoints: Fix the descriptions of tracepoint_probe_register{_prio}
2018-05-28 12:49:51 -04:00
headers: untangle kmemleak.h from mm.h
2018-04-05 21:36:27 -07:00
fs: add do_fchownat(), ksys_fchown() helpers and ksys_{,l}chown() wrappers
2018-04-02 20:15:59 +02:00
kernel: provide ksys_*() wrappers for syscalls called by kernel/uid16.c
2018-04-02 20:15:30 +02:00
umh: fix race condition
2018-06-07 16:56:28 -04:00
efivarfs: Limit the rate for non-root to read files
2018-02-22 10:21:02 -08:00
treewide: kmalloc() -> kmalloc_array()
2018-06-12 16:19:22 -07:00
uts: create "struct uts_namespace" from kmem_cache
2018-04-11 10:28:35 -07:00
treewide: kzalloc() -> kcalloc()
2018-06-12 16:19:22 -07:00
workqueue: Set worker->desc to workqueue name by default
2018-05-18 08:47:13 -07:00
b5b1404d08