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authorThomas Gleixner <tglx@linutronix.de>2014-05-07 15:44:16 +0000
committerThomas Gleixner <tglx@linutronix.de>2014-05-16 14:05:21 +0200
commitb26d851ff1928b56242c4c5e16cb62bac2d9526c (patch)
treeef1325900428e72bcf4b520f77cba9ab2669fdb3 /arch/tile/kernel
parent2aa799d891299457e4107d33f07a1ed5ac8849ae (diff)
tile: Use SPARSE_IRQ
Get rid of the private allocator and switch over to sparse IRQs. Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Reviewed-by: Grant Likely <grant.likely@linaro.org> Cc: Tony Luck <tony.luck@intel.com> Cc: Peter Zijlstra <peterz@infradead.org> Acked-by: Chris Metcalf <cmetcalf@tilera.com> Link: http://lkml.kernel.org/r/20140507154338.423715783@linutronix.de Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Diffstat (limited to 'arch/tile/kernel')
-rw-r--r--arch/tile/kernel/irq.c52
1 files changed, 3 insertions, 49 deletions
diff --git a/arch/tile/kernel/irq.c b/arch/tile/kernel/irq.c
index 5fd197e0a2d4..637f2ffaa5f5 100644
--- a/arch/tile/kernel/irq.c
+++ b/arch/tile/kernel/irq.c
@@ -54,13 +54,6 @@ static DEFINE_PER_CPU(unsigned long, irq_disable_mask)
*/
static DEFINE_PER_CPU(int, irq_depth);
-/* State for allocating IRQs on Gx. */
-#if CHIP_HAS_IPI()
-static unsigned long available_irqs = ((1UL << NR_IRQS) - 1) &
- (~(1UL << IRQ_RESCHEDULE));
-static DEFINE_SPINLOCK(available_irqs_lock);
-#endif
-
#if CHIP_HAS_IPI()
/* Use SPRs to manipulate device interrupts. */
#define mask_irqs(irq_mask) __insn_mtspr(SPR_IPI_MASK_SET_K, irq_mask)
@@ -278,50 +271,11 @@ int arch_show_interrupts(struct seq_file *p, int prec)
return 0;
}
-/*
- * Generic, controller-independent functions:
- */
-
#if CHIP_HAS_IPI()
-int create_irq(void)
-{
- unsigned long flags;
- int result;
-
- spin_lock_irqsave(&available_irqs_lock, flags);
- if (available_irqs == 0)
- result = -ENOMEM;
- else {
- result = __ffs(available_irqs);
- available_irqs &= ~(1UL << result);
- dynamic_irq_init(result);
- }
- spin_unlock_irqrestore(&available_irqs_lock, flags);
-
- return result;
-}
-EXPORT_SYMBOL(create_irq);
-
-void destroy_irq(unsigned int irq)
-{
- unsigned long flags;
-
- spin_lock_irqsave(&available_irqs_lock, flags);
- available_irqs |= (1UL << irq);
- dynamic_irq_cleanup(irq);
- spin_unlock_irqrestore(&available_irqs_lock, flags);
-}
-EXPORT_SYMBOL(destroy_irq);
-
-unsigned int irq_alloc_hwirq(int node)
-{
- int ret = create_irq();
- return ret < 0 ? 0 : ret;
-}
-
-void irq_free_hwirq(unsigned int irq)
+int arch_setup_hwirq(unsigned int irq, int node)
{
- destroy_irq(irq);
+ return irq >= NR_IRQS ? -EINVAL : 0;
}
+void arch_teardown_hwirq(unsigned int irq) { }
#endif