1 files changed, 8 insertions, 58 deletions

diff --git a/mm/highmem.c b/mm/highmem.c
index 7a0aa1be4993..693394daa2ed 100644
--- a/mm/highmem.c
+++ b/mm/highmem.c
@@ -29,6 +29,11 @@
 #include <linux/kgdb.h>
 #include <asm/tlbflush.h>
 
+
+#if defined(CONFIG_HIGHMEM) || defined(CONFIG_X86_32)
+DEFINE_PER_CPU(int, __kmap_atomic_idx);
+#endif
+
 /*
  * Virtual_count is not a pure "count".
  *  0 means that it is not mapped, and has not been mapped
@@ -42,6 +47,9 @@
 unsigned long totalhigh_pages __read_mostly;
 EXPORT_SYMBOL(totalhigh_pages);
 
+
+EXPORT_PER_CPU_SYMBOL(__kmap_atomic_idx);
+
 unsigned int nr_free_highpages (void)
 {
         pg_data_t *pgdat;
@@ -422,61 +430,3 @@ void __init page_address_init(void)
 }
 
 #endif  /* defined(CONFIG_HIGHMEM) && !defined(WANT_PAGE_VIRTUAL) */
-
-#ifdef CONFIG_DEBUG_HIGHMEM
-
-void debug_kmap_atomic(enum km_type type)
-{
-        static int warn_count = 10;
-
-        if (unlikely(warn_count < 0))
-                return;
-
-        if (unlikely(in_interrupt())) {
-                if (in_nmi()) {
-                        if (type != KM_NMI && type != KM_NMI_PTE) {
-                                WARN_ON(1);
-                                warn_count--;
-                        }
-                } else if (in_irq()) {
-                        if (type != KM_IRQ0 && type != KM_IRQ1 &&
-                            type != KM_BIO_SRC_IRQ && type != KM_BIO_DST_IRQ &&
-                            type != KM_BOUNCE_READ && type != KM_IRQ_PTE) {
-                                WARN_ON(1);
-                                warn_count--;
-                        }
-                } else if (!irqs_disabled()) {  /* softirq */
-                        if (type != KM_IRQ0 && type != KM_IRQ1 &&
-                            type != KM_SOFTIRQ0 && type != KM_SOFTIRQ1 &&
-                            type != KM_SKB_SUNRPC_DATA &&
-                            type != KM_SKB_DATA_SOFTIRQ &&
-                            type != KM_BOUNCE_READ) {
-                                WARN_ON(1);
-                                warn_count--;
-                        }
-                }
-        }
-
-        if (type == KM_IRQ0 || type == KM_IRQ1 || type == KM_BOUNCE_READ ||
-                        type == KM_BIO_SRC_IRQ || type == KM_BIO_DST_IRQ ||
-                        type == KM_IRQ_PTE || type == KM_NMI ||
-                        type == KM_NMI_PTE ) {
-                if (!irqs_disabled()) {
-                        WARN_ON(1);
-                        warn_count--;
-                }
-        } else if (type == KM_SOFTIRQ0 || type == KM_SOFTIRQ1) {
-                if (irq_count() == 0 && !irqs_disabled()) {
-                        WARN_ON(1);
-                        warn_count--;
-                }
-        }
-#ifdef CONFIG_KGDB_KDB
-        if (unlikely(type == KM_KDB && atomic_read(&kgdb_active) == -1)) {
-                WARN_ON(1);
-                warn_count--;
-        }
-#endif /* CONFIG_KGDB_KDB */
-}
-
-#endif