genirq: Remove the now unused sparse irq leftovers

The move_irq_desc() function was only used due to the problem that the
allocator did not free the old descriptors. So the descriptors had to
be moved in create_irq_nr(). That's history.

The code would have never been able to move active interrupt
descriptors on affinity settings. That can be done in a completely
different way w/o all this horror.

Remove all of it.

Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Reviewed-by: Ingo Molnar <mingo@elte.hu>

1 files changed, 0 insertions, 102 deletions

diff --git a/kernel/irq/internals.h b/kernel/irq/internals.h
index f444203a772d..4571ae7e085a 100644
--- a/kernel/irq/internals.h
+++ b/kernel/irq/internals.h
@@ -18,17 +18,11 @@ extern int __irq_set_trigger(struct irq_desc *desc, unsigned int irq,
 extern void __disable_irq(struct irq_desc *desc, unsigned int irq, bool susp);
 extern void __enable_irq(struct irq_desc *desc, unsigned int irq, bool resume);
 
-extern struct lock_class_key irq_desc_lock_class;
 extern void init_kstat_irqs(struct irq_desc *desc, int node, int nr);
-extern raw_spinlock_t sparse_irq_lock;
 
 /* Resending of interrupts :*/
 void check_irq_resend(struct irq_desc *desc, unsigned int irq);
 
-#ifdef CONFIG_SPARSE_IRQ
-void replace_irq_desc(unsigned int irq, struct irq_desc *desc);
-#endif
-
 #ifdef CONFIG_PROC_FS
 extern void register_irq_proc(unsigned int irq, struct irq_desc *desc);
 extern void unregister_irq_proc(unsigned int irq, struct irq_desc *desc);
@@ -110,99 +104,3 @@ static inline void print_irq_desc(unsigned int irq, struct irq_desc *desc)
 
 #undef P
 
-/* Stuff below will be cleaned up after the sparse allocator is done */
-
-#ifdef CONFIG_SMP
-/**
- * alloc_desc_masks - allocate cpumasks for irq_desc
- * @desc:       pointer to irq_desc struct
- * @node:       node which will be handling the cpumasks
- * @boot:       true if need bootmem
- *
- * Allocates affinity and pending_mask cpumask if required.
- * Returns true if successful (or not required).
- */
-static inline bool alloc_desc_masks(struct irq_desc *desc, int node,
-                                                        bool boot)
-{
-        gfp_t gfp = GFP_ATOMIC;
-
-        if (boot)
-                gfp = GFP_NOWAIT;
-
-#ifdef CONFIG_CPUMASK_OFFSTACK
-        if (!alloc_cpumask_var_node(&desc->irq_data.affinity, gfp, node))
-                return false;
-
-#ifdef CONFIG_GENERIC_PENDING_IRQ
-        if (!alloc_cpumask_var_node(&desc->pending_mask, gfp, node)) {
-                free_cpumask_var(desc->irq_data.affinity);
-                return false;
-        }
-#endif
-#endif
-        return true;
-}
-
-static inline void init_desc_masks(struct irq_desc *desc)
-{
-        cpumask_setall(desc->irq_data.affinity);
-#ifdef CONFIG_GENERIC_PENDING_IRQ
-        cpumask_clear(desc->pending_mask);
-#endif
-}
-
-/**
- * init_copy_desc_masks - copy cpumasks for irq_desc
- * @old_desc:   pointer to old irq_desc struct
- * @new_desc:   pointer to new irq_desc struct
- *
- * Insures affinity and pending_masks are copied to new irq_desc.
- * If !CONFIG_CPUMASKS_OFFSTACK the cpumasks are embedded in the
- * irq_desc struct so the copy is redundant.
- */
-
-static inline void init_copy_desc_masks(struct irq_desc *old_desc,
-                                        struct irq_desc *new_desc)
-{
-#ifdef CONFIG_CPUMASK_OFFSTACK
-        cpumask_copy(new_desc->irq_data.affinity, old_desc->irq_data.affinity);
-
-#ifdef CONFIG_GENERIC_PENDING_IRQ
-        cpumask_copy(new_desc->pending_mask, old_desc->pending_mask);
-#endif
-#endif
-}
-
-static inline void free_desc_masks(struct irq_desc *old_desc,
-                                   struct irq_desc *new_desc)
-{
-        free_cpumask_var(old_desc->irq_data.affinity);
-
-#ifdef CONFIG_GENERIC_PENDING_IRQ
-        free_cpumask_var(old_desc->pending_mask);
-#endif
-}
-
-#else /* !CONFIG_SMP */
-
-static inline bool alloc_desc_masks(struct irq_desc *desc, int node,
-                                                                bool boot)
-{
-        return true;
-}
-
-static inline void init_desc_masks(struct irq_desc *desc)
-{
-}
-
-static inline void init_copy_desc_masks(struct irq_desc *old_desc,
-                                        struct irq_desc *new_desc)
-{
-}
-
-static inline void free_desc_masks(struct irq_desc *old_desc,
-                                   struct irq_desc *new_desc)
-{
-}
-#endif  /* CONFIG_SMP */