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authorThomas Gleixner <tglx@linutronix.de>2009-07-03 08:44:46 -0500
committerIngo Molnar <mingo@elte.hu>2011-09-13 11:12:14 +0200
commitbd31b85960a7fcb2d7ede216460b8da71a88411c (patch)
treef2ab1a1105705856c5cdfc71bcf3f7b5f897d30d /arch/arm/kernel/traps.c
parenta1741e7fcbc19a67520115df480ab17012cc3d0b (diff)
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locking, ARM: Annotate low level hw locks as raw
Annotate the low level hardware locks which must not be preempted. In mainline this change documents the low level nature of the lock - otherwise there's no functional difference. Lockdep and Sparse checking will work as usual. Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Cc: Russell King <rmk+kernel@arm.linux.org.uk> Signed-off-by: Ingo Molnar <mingo@elte.hu>
Diffstat (limited to 'arch/arm/kernel/traps.c')
-rw-r--r--arch/arm/kernel/traps.c20
1 files changed, 10 insertions, 10 deletions
diff --git a/arch/arm/kernel/traps.c b/arch/arm/kernel/traps.c
index bc9f9da782cb..81cc05a0274c 100644
--- a/arch/arm/kernel/traps.c
+++ b/arch/arm/kernel/traps.c
@@ -255,7 +255,7 @@ static int __die(const char *str, int err, struct thread_info *thread, struct pt
return ret;
}
-static DEFINE_SPINLOCK(die_lock);
+static DEFINE_RAW_SPINLOCK(die_lock);
/*
* This function is protected against re-entrancy.
@@ -267,7 +267,7 @@ void die(const char *str, struct pt_regs *regs, int err)
oops_enter();
- spin_lock_irq(&die_lock);
+ raw_spin_lock_irq(&die_lock);
console_verbose();
bust_spinlocks(1);
ret = __die(str, err, thread, regs);
@@ -277,7 +277,7 @@ void die(const char *str, struct pt_regs *regs, int err)
bust_spinlocks(0);
add_taint(TAINT_DIE);
- spin_unlock_irq(&die_lock);
+ raw_spin_unlock_irq(&die_lock);
oops_exit();
if (in_interrupt())
@@ -302,24 +302,24 @@ void arm_notify_die(const char *str, struct pt_regs *regs,
}
static LIST_HEAD(undef_hook);
-static DEFINE_SPINLOCK(undef_lock);
+static DEFINE_RAW_SPINLOCK(undef_lock);
void register_undef_hook(struct undef_hook *hook)
{
unsigned long flags;
- spin_lock_irqsave(&undef_lock, flags);
+ raw_spin_lock_irqsave(&undef_lock, flags);
list_add(&hook->node, &undef_hook);
- spin_unlock_irqrestore(&undef_lock, flags);
+ raw_spin_unlock_irqrestore(&undef_lock, flags);
}
void unregister_undef_hook(struct undef_hook *hook)
{
unsigned long flags;
- spin_lock_irqsave(&undef_lock, flags);
+ raw_spin_lock_irqsave(&undef_lock, flags);
list_del(&hook->node);
- spin_unlock_irqrestore(&undef_lock, flags);
+ raw_spin_unlock_irqrestore(&undef_lock, flags);
}
static int call_undef_hook(struct pt_regs *regs, unsigned int instr)
@@ -328,12 +328,12 @@ static int call_undef_hook(struct pt_regs *regs, unsigned int instr)
unsigned long flags;
int (*fn)(struct pt_regs *regs, unsigned int instr) = NULL;
- spin_lock_irqsave(&undef_lock, flags);
+ raw_spin_lock_irqsave(&undef_lock, flags);
list_for_each_entry(hook, &undef_hook, node)
if ((instr & hook->instr_mask) == hook->instr_val &&
(regs->ARM_cpsr & hook->cpsr_mask) == hook->cpsr_val)
fn = hook->fn;
- spin_unlock_irqrestore(&undef_lock, flags);
+ raw_spin_unlock_irqrestore(&undef_lock, flags);
return fn ? fn(regs, instr) : 1;
}