From bd31b85960a7fcb2d7ede216460b8da71a88411c Mon Sep 17 00:00:00 2001 From: Thomas Gleixner Date: Fri, 3 Jul 2009 08:44:46 -0500 Subject: 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 Cc: Russell King Signed-off-by: Ingo Molnar --- arch/arm/mm/context.c | 14 +++++++------- 1 file changed, 7 insertions(+), 7 deletions(-) (limited to 'arch/arm/mm/context.c') diff --git a/arch/arm/mm/context.c b/arch/arm/mm/context.c index b0ee9ba3cfab..93aac068da94 100644 --- a/arch/arm/mm/context.c +++ b/arch/arm/mm/context.c @@ -16,7 +16,7 @@ #include #include -static DEFINE_SPINLOCK(cpu_asid_lock); +static DEFINE_RAW_SPINLOCK(cpu_asid_lock); unsigned int cpu_last_asid = ASID_FIRST_VERSION; #ifdef CONFIG_SMP DEFINE_PER_CPU(struct mm_struct *, current_mm); @@ -31,7 +31,7 @@ DEFINE_PER_CPU(struct mm_struct *, current_mm); void __init_new_context(struct task_struct *tsk, struct mm_struct *mm) { mm->context.id = 0; - spin_lock_init(&mm->context.id_lock); + raw_spin_lock_init(&mm->context.id_lock); } static void flush_context(void) @@ -58,7 +58,7 @@ static void set_mm_context(struct mm_struct *mm, unsigned int asid) * the broadcast. This function is also called via IPI so the * mm->context.id_lock has to be IRQ-safe. */ - spin_lock_irqsave(&mm->context.id_lock, flags); + raw_spin_lock_irqsave(&mm->context.id_lock, flags); if (likely((mm->context.id ^ cpu_last_asid) >> ASID_BITS)) { /* * Old version of ASID found. Set the new one and @@ -67,7 +67,7 @@ static void set_mm_context(struct mm_struct *mm, unsigned int asid) mm->context.id = asid; cpumask_clear(mm_cpumask(mm)); } - spin_unlock_irqrestore(&mm->context.id_lock, flags); + raw_spin_unlock_irqrestore(&mm->context.id_lock, flags); /* * Set the mm_cpumask(mm) bit for the current CPU. @@ -117,7 +117,7 @@ void __new_context(struct mm_struct *mm) { unsigned int asid; - spin_lock(&cpu_asid_lock); + raw_spin_lock(&cpu_asid_lock); #ifdef CONFIG_SMP /* * Check the ASID again, in case the change was broadcast from @@ -125,7 +125,7 @@ void __new_context(struct mm_struct *mm) */ if (unlikely(((mm->context.id ^ cpu_last_asid) >> ASID_BITS) == 0)) { cpumask_set_cpu(smp_processor_id(), mm_cpumask(mm)); - spin_unlock(&cpu_asid_lock); + raw_spin_unlock(&cpu_asid_lock); return; } #endif @@ -153,5 +153,5 @@ void __new_context(struct mm_struct *mm) } set_mm_context(mm, asid); - spin_unlock(&cpu_asid_lock); + raw_spin_unlock(&cpu_asid_lock); } -- cgit v1.2.1