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authorLinus Torvalds <torvalds@linux-foundation.org>2017-09-04 11:13:56 -0700
committerLinus Torvalds <torvalds@linux-foundation.org>2017-09-04 11:13:56 -0700
commite0a195b5225e1285806622cc146dc5c3312fb392 (patch)
tree189c6a129f58a1aeed25520f4a2af5f15dae64f1 /arch
parent0098410dd62dcbabf50b5b1d257ddcc9278e9087 (diff)
parentc455fd9235b6bd2802db86109cfa0ec105992f68 (diff)
downloadlinux-e0a195b5225e1285806622cc146dc5c3312fb392.tar.gz
Merge branch 'x86-spinlocks-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull x86 spinlock update from Ingo Molnar: "Convert an NMI lock to raw" [ Clarification: it's not that the lock itself is NMI-safe, it's about NMI registration called from RT contexts - Linus ] * 'x86-spinlocks-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: x86/nmi: Use raw lock
Diffstat (limited to 'arch')
-rw-r--r--arch/x86/kernel/nmi.c18
1 files changed, 9 insertions, 9 deletions
diff --git a/arch/x86/kernel/nmi.c b/arch/x86/kernel/nmi.c
index 446c8aa09b9b..35aafc95e4b8 100644
--- a/arch/x86/kernel/nmi.c
+++ b/arch/x86/kernel/nmi.c
@@ -39,26 +39,26 @@
#include <trace/events/nmi.h>
struct nmi_desc {
- spinlock_t lock;
+ raw_spinlock_t lock;
struct list_head head;
};
static struct nmi_desc nmi_desc[NMI_MAX] =
{
{
- .lock = __SPIN_LOCK_UNLOCKED(&nmi_desc[0].lock),
+ .lock = __RAW_SPIN_LOCK_UNLOCKED(&nmi_desc[0].lock),
.head = LIST_HEAD_INIT(nmi_desc[0].head),
},
{
- .lock = __SPIN_LOCK_UNLOCKED(&nmi_desc[1].lock),
+ .lock = __RAW_SPIN_LOCK_UNLOCKED(&nmi_desc[1].lock),
.head = LIST_HEAD_INIT(nmi_desc[1].head),
},
{
- .lock = __SPIN_LOCK_UNLOCKED(&nmi_desc[2].lock),
+ .lock = __RAW_SPIN_LOCK_UNLOCKED(&nmi_desc[2].lock),
.head = LIST_HEAD_INIT(nmi_desc[2].head),
},
{
- .lock = __SPIN_LOCK_UNLOCKED(&nmi_desc[3].lock),
+ .lock = __RAW_SPIN_LOCK_UNLOCKED(&nmi_desc[3].lock),
.head = LIST_HEAD_INIT(nmi_desc[3].head),
},
@@ -163,7 +163,7 @@ int __register_nmi_handler(unsigned int type, struct nmiaction *action)
init_irq_work(&action->irq_work, nmi_max_handler);
- spin_lock_irqsave(&desc->lock, flags);
+ raw_spin_lock_irqsave(&desc->lock, flags);
/*
* Indicate if there are multiple registrations on the
@@ -181,7 +181,7 @@ int __register_nmi_handler(unsigned int type, struct nmiaction *action)
else
list_add_tail_rcu(&action->list, &desc->head);
- spin_unlock_irqrestore(&desc->lock, flags);
+ raw_spin_unlock_irqrestore(&desc->lock, flags);
return 0;
}
EXPORT_SYMBOL(__register_nmi_handler);
@@ -192,7 +192,7 @@ void unregister_nmi_handler(unsigned int type, const char *name)
struct nmiaction *n;
unsigned long flags;
- spin_lock_irqsave(&desc->lock, flags);
+ raw_spin_lock_irqsave(&desc->lock, flags);
list_for_each_entry_rcu(n, &desc->head, list) {
/*
@@ -207,7 +207,7 @@ void unregister_nmi_handler(unsigned int type, const char *name)
}
}
- spin_unlock_irqrestore(&desc->lock, flags);
+ raw_spin_unlock_irqrestore(&desc->lock, flags);
synchronize_rcu();
}
EXPORT_SYMBOL_GPL(unregister_nmi_handler);