Merge commit 'md/for-linus' into async-tx-next

Conflicts:
	drivers/md/raid5.c

12 files changed, 49 insertions, 82 deletions

diff --git a/arch/powerpc/include/asm/cpm1.h b/arch/powerpc/include/asm/cpm1.h
index 2ff798744c1d..7685ffde8821 100644
--- a/arch/powerpc/include/asm/cpm1.h
+++ b/arch/powerpc/include/asm/cpm1.h
@@ -598,8 +598,6 @@ typedef struct risc_timer_pram {
 #define CICR_IEN                ((uint)0x00000080)      /* Int. enable */
 #define CICR_SPS                ((uint)0x00000001)      /* SCC Spread */
 
-#define IMAP_ADDR               (get_immrbase())
-
 #define CPM_PIN_INPUT     0
 #define CPM_PIN_OUTPUT    1
 #define CPM_PIN_PRIMARY   0
diff --git a/arch/powerpc/include/asm/delay.h b/arch/powerpc/include/asm/delay.h
index 1e2eb41fa057..52e4d54da2a9 100644
--- a/arch/powerpc/include/asm/delay.h
+++ b/arch/powerpc/include/asm/delay.h
@@ -63,6 +63,8 @@ extern void udelay(unsigned long usecs);
                         udelay(delay);                                         \
                 else                                                           \
                         cpu_relax();                                           \
+        if (!__ret)                                                            \
+                __ret = (condition);                                           \
         __ret;                                                                 \
 })
 
diff --git a/arch/powerpc/include/asm/dma-mapping.h b/arch/powerpc/include/asm/dma-mapping.h
index 3d9e887c3c0c..b44aaabdd1a6 100644
--- a/arch/powerpc/include/asm/dma-mapping.h
+++ b/arch/powerpc/include/asm/dma-mapping.h
@@ -309,7 +309,9 @@ static inline void dma_sync_single_for_cpu(struct device *dev,
         struct dma_mapping_ops *dma_ops = get_dma_ops(dev);
 
         BUG_ON(!dma_ops);
-        dma_ops->sync_single_range_for_cpu(dev, dma_handle, 0,
+
+        if (dma_ops->sync_single_range_for_cpu)
+                dma_ops->sync_single_range_for_cpu(dev, dma_handle, 0,
                                            size, direction);
 }
 
@@ -320,7 +322,9 @@ static inline void dma_sync_single_for_device(struct device *dev,
         struct dma_mapping_ops *dma_ops = get_dma_ops(dev);
 
         BUG_ON(!dma_ops);
-        dma_ops->sync_single_range_for_device(dev, dma_handle,
+
+        if (dma_ops->sync_single_range_for_device)
+                dma_ops->sync_single_range_for_device(dev, dma_handle,
                                               0, size, direction);
 }
 
@@ -331,7 +335,9 @@ static inline void dma_sync_sg_for_cpu(struct device *dev,
         struct dma_mapping_ops *dma_ops = get_dma_ops(dev);
 
         BUG_ON(!dma_ops);
-        dma_ops->sync_sg_for_cpu(dev, sgl, nents, direction);
+
+        if (dma_ops->sync_sg_for_cpu)
+                dma_ops->sync_sg_for_cpu(dev, sgl, nents, direction);
 }
 
 static inline void dma_sync_sg_for_device(struct device *dev,
@@ -341,7 +347,9 @@ static inline void dma_sync_sg_for_device(struct device *dev,
         struct dma_mapping_ops *dma_ops = get_dma_ops(dev);
 
         BUG_ON(!dma_ops);
-        dma_ops->sync_sg_for_device(dev, sgl, nents, direction);
+
+        if (dma_ops->sync_sg_for_device)
+                dma_ops->sync_sg_for_device(dev, sgl, nents, direction);
 }
 
 static inline void dma_sync_single_range_for_cpu(struct device *dev,
@@ -351,7 +359,9 @@ static inline void dma_sync_single_range_for_cpu(struct device *dev,
         struct dma_mapping_ops *dma_ops = get_dma_ops(dev);
 
         BUG_ON(!dma_ops);
-        dma_ops->sync_single_range_for_cpu(dev, dma_handle,
+
+        if (dma_ops->sync_single_range_for_cpu)
+                dma_ops->sync_single_range_for_cpu(dev, dma_handle,
                                            offset, size, direction);
 }
 
@@ -362,7 +372,9 @@ static inline void dma_sync_single_range_for_device(struct device *dev,
         struct dma_mapping_ops *dma_ops = get_dma_ops(dev);
 
         BUG_ON(!dma_ops);
-        dma_ops->sync_single_range_for_device(dev, dma_handle, offset,
+
+        if (dma_ops->sync_single_range_for_device)
+                dma_ops->sync_single_range_for_device(dev, dma_handle, offset,
                                               size, direction);
 }
 #else /* CONFIG_PPC_NEED_DMA_SYNC_OPS */
diff --git a/arch/powerpc/include/asm/highmem.h b/arch/powerpc/include/asm/highmem.h
index 684a73f4324f..a74c4ee6c020 100644
--- a/arch/powerpc/include/asm/highmem.h
+++ b/arch/powerpc/include/asm/highmem.h
@@ -22,9 +22,7 @@
 
 #ifdef __KERNEL__
 
-#include <linux/init.h>
 #include <linux/interrupt.h>
-#include <linux/highmem.h>
 #include <asm/kmap_types.h>
 #include <asm/tlbflush.h>
 #include <asm/page.h>
@@ -62,6 +60,9 @@ extern pte_t *pkmap_page_table;
 
 extern void *kmap_high(struct page *page);
 extern void kunmap_high(struct page *page);
+extern void *kmap_atomic_prot(struct page *page, enum km_type type,
+                              pgprot_t prot);
+extern void kunmap_atomic(void *kvaddr, enum km_type type);
 
 static inline void *kmap(struct page *page)
 {
@@ -79,62 +80,11 @@ static inline void kunmap(struct page *page)
         kunmap_high(page);
 }
 
-/*
- * The use of kmap_atomic/kunmap_atomic is discouraged - kmap/kunmap
- * gives a more generic (and caching) interface. But kmap_atomic can
- * be used in IRQ contexts, so in some (very limited) cases we need
- * it.
- */
-static inline void *kmap_atomic_prot(struct page *page, enum km_type type, pgprot_t prot)
-{
-        unsigned int idx;
-        unsigned long vaddr;
-
-        /* even !CONFIG_PREEMPT needs this, for in_atomic in do_page_fault */
-        pagefault_disable();
-        if (!PageHighMem(page))
-                return page_address(page);
-
-        debug_kmap_atomic(type);
-        idx = type + KM_TYPE_NR*smp_processor_id();
-        vaddr = __fix_to_virt(FIX_KMAP_BEGIN + idx);
-#ifdef CONFIG_DEBUG_HIGHMEM
-        BUG_ON(!pte_none(*(kmap_pte-idx)));
-#endif
-        __set_pte_at(&init_mm, vaddr, kmap_pte-idx, mk_pte(page, prot), 1);
-        local_flush_tlb_page(NULL, vaddr);
-
-        return (void*) vaddr;
-}
-
 static inline void *kmap_atomic(struct page *page, enum km_type type)
 {
         return kmap_atomic_prot(page, type, kmap_prot);
 }
 
-static inline void kunmap_atomic(void *kvaddr, enum km_type type)
-{
-#ifdef CONFIG_DEBUG_HIGHMEM
-        unsigned long vaddr = (unsigned long) kvaddr & PAGE_MASK;
-        enum fixed_addresses idx = type + KM_TYPE_NR*smp_processor_id();
-
-        if (vaddr < __fix_to_virt(FIX_KMAP_END)) {
-                pagefault_enable();
-                return;
-        }
-
-        BUG_ON(vaddr != __fix_to_virt(FIX_KMAP_BEGIN + idx));
-
-        /*
-         * force other mappings to Oops if they'll try to access
-         * this pte without first remap it
-         */
-        pte_clear(&init_mm, vaddr, kmap_pte-idx);
-        local_flush_tlb_page(NULL, vaddr);
-#endif
-        pagefault_enable();
-}
-
 static inline struct page *kmap_atomic_to_page(void *ptr)
 {
         unsigned long idx, vaddr = (unsigned long) ptr;
@@ -148,6 +98,7 @@ static inline struct page *kmap_atomic_to_page(void *ptr)
         return pte_page(*pte);
 }
 
+
 #define flush_cache_kmaps()     flush_cache_all()
 
 #endif /* __KERNEL__ */
diff --git a/arch/powerpc/include/asm/hw_irq.h b/arch/powerpc/include/asm/hw_irq.h
index 867ab8ed69b3..8b505eaaa38a 100644
--- a/arch/powerpc/include/asm/hw_irq.h
+++ b/arch/powerpc/include/asm/hw_irq.h
@@ -68,13 +68,13 @@ static inline int irqs_disabled_flags(unsigned long flags)
 
 #if defined(CONFIG_BOOKE)
 #define SET_MSR_EE(x)   mtmsr(x)
-#define local_irq_restore(flags)        __asm__ __volatile__("wrtee %0" : : "r" (flags) : "memory")
+#define raw_local_irq_restore(flags)    __asm__ __volatile__("wrtee %0" : : "r" (flags) : "memory")
 #else
 #define SET_MSR_EE(x)   mtmsr(x)
-#define local_irq_restore(flags)        mtmsr(flags)
+#define raw_local_irq_restore(flags)    mtmsr(flags)
 #endif
 
-static inline void local_irq_disable(void)
+static inline void raw_local_irq_disable(void)
 {
 #ifdef CONFIG_BOOKE
         __asm__ __volatile__("wrteei 0": : :"memory");
@@ -86,7 +86,7 @@ static inline void local_irq_disable(void)
 #endif
 }
 
-static inline void local_irq_enable(void)
+static inline void raw_local_irq_enable(void)
 {
 #ifdef CONFIG_BOOKE
         __asm__ __volatile__("wrteei 1": : :"memory");
@@ -98,7 +98,7 @@ static inline void local_irq_enable(void)
 #endif
 }
 
-static inline void local_irq_save_ptr(unsigned long *flags)
+static inline void raw_local_irq_save_ptr(unsigned long *flags)
 {
         unsigned long msr;
         msr = mfmsr();
@@ -110,12 +110,12 @@ static inline void local_irq_save_ptr(unsigned long *flags)
 #endif
 }
 
-#define local_save_flags(flags) ((flags) = mfmsr())
-#define local_irq_save(flags)   local_irq_save_ptr(&flags)
-#define irqs_disabled()         ((mfmsr() & MSR_EE) == 0)
+#define raw_local_save_flags(flags)     ((flags) = mfmsr())
+#define raw_local_irq_save(flags)       raw_local_irq_save_ptr(&flags)
+#define raw_irqs_disabled()             ((mfmsr() & MSR_EE) == 0)
+#define raw_irqs_disabled_flags(flags)  (((flags) & MSR_EE) == 0)
 
-#define hard_irq_enable()       local_irq_enable()
-#define hard_irq_disable()      local_irq_disable()
+#define hard_irq_disable()              raw_local_irq_disable()
 
 static inline int irqs_disabled_flags(unsigned long flags)
 {
diff --git a/arch/powerpc/include/asm/perf_counter.h b/arch/powerpc/include/asm/perf_counter.h
index 8ccd4e155768..0ea0639fcf75 100644
--- a/arch/powerpc/include/asm/perf_counter.h
+++ b/arch/powerpc/include/asm/perf_counter.h
@@ -61,6 +61,8 @@ struct pt_regs;
 extern unsigned long perf_misc_flags(struct pt_regs *regs);
 extern unsigned long perf_instruction_pointer(struct pt_regs *regs);
 
+#define PERF_COUNTER_INDEX_OFFSET       1
+
 /*
  * Only override the default definitions in include/linux/perf_counter.h
  * if we have hardware PMU support.
diff --git a/arch/powerpc/include/asm/pgalloc-32.h b/arch/powerpc/include/asm/pgalloc-32.h
index 0815eb40acae..c9500d666a1d 100644
--- a/arch/powerpc/include/asm/pgalloc-32.h
+++ b/arch/powerpc/include/asm/pgalloc-32.h
@@ -16,7 +16,7 @@ extern void pgd_free(struct mm_struct *mm, pgd_t *pgd);
  */
 /* #define pmd_alloc_one(mm,address)       ({ BUG(); ((pmd_t *)2); }) */
 #define pmd_free(mm, x)                 do { } while (0)
-#define __pmd_free_tlb(tlb,x)           do { } while (0)
+#define __pmd_free_tlb(tlb,x,a)         do { } while (0)
 /* #define pgd_populate(mm, pmd, pte)      BUG() */
 
 #ifndef CONFIG_BOOKE
diff --git a/arch/powerpc/include/asm/pgalloc-64.h b/arch/powerpc/include/asm/pgalloc-64.h
index afda2bdd860f..e6f069c4f713 100644
--- a/arch/powerpc/include/asm/pgalloc-64.h
+++ b/arch/powerpc/include/asm/pgalloc-64.h
@@ -118,11 +118,11 @@ static inline void pgtable_free(pgtable_free_t pgf)
                 kmem_cache_free(pgtable_cache[cachenum], p);
 }
 
-#define __pmd_free_tlb(tlb, pmd)        \
+#define __pmd_free_tlb(tlb, pmd,addr)                 \
         pgtable_free_tlb(tlb, pgtable_free_cache(pmd, \
                 PMD_CACHE_NUM, PMD_TABLE_SIZE-1))
 #ifndef CONFIG_PPC_64K_PAGES
-#define __pud_free_tlb(tlb, pud)        \
+#define __pud_free_tlb(tlb, pud, addr)                \
         pgtable_free_tlb(tlb, pgtable_free_cache(pud, \
                 PUD_CACHE_NUM, PUD_TABLE_SIZE-1))
 #endif /* CONFIG_PPC_64K_PAGES */
diff --git a/arch/powerpc/include/asm/pgalloc.h b/arch/powerpc/include/asm/pgalloc.h
index 5d8480265a77..1730e5e298d6 100644
--- a/arch/powerpc/include/asm/pgalloc.h
+++ b/arch/powerpc/include/asm/pgalloc.h
@@ -38,14 +38,14 @@ static inline pgtable_free_t pgtable_free_cache(void *p, int cachenum,
 extern void pgtable_free_tlb(struct mmu_gather *tlb, pgtable_free_t pgf);
 
 #ifdef CONFIG_SMP
-#define __pte_free_tlb(tlb,ptepage)     \
+#define __pte_free_tlb(tlb,ptepage,address)             \
 do { \
         pgtable_page_dtor(ptepage); \
         pgtable_free_tlb(tlb, pgtable_free_cache(page_address(ptepage), \
-                PTE_NONCACHE_NUM, PTE_TABLE_SIZE-1)); \
+                                        PTE_NONCACHE_NUM, PTE_TABLE_SIZE-1)); \
 } while (0)
 #else
-#define __pte_free_tlb(tlb, pte)        pte_free((tlb)->mm, (pte))
+#define __pte_free_tlb(tlb, pte, address)       pte_free((tlb)->mm, (pte))
 #endif
 
 
diff --git a/arch/powerpc/include/asm/pte-hash64-64k.h b/arch/powerpc/include/asm/pte-hash64-64k.h
index e05d26fa372f..82b72207c51c 100644
--- a/arch/powerpc/include/asm/pte-hash64-64k.h
+++ b/arch/powerpc/include/asm/pte-hash64-64k.h
@@ -47,7 +47,8 @@
  * generic accessors and iterators here
  */
 #define __real_pte(e,p)         ((real_pte_t) { \
-        (e), pte_val(*((p) + PTRS_PER_PTE)) })
+                        (e), ((e) & _PAGE_COMBO) ? \
+                                (pte_val(*((p) + PTRS_PER_PTE))) : 0 })
 #define __rpte_to_hidx(r,index) ((pte_val((r).pte) & _PAGE_COMBO) ? \
         (((r).hidx >> ((index)<<2)) & 0xf) : ((pte_val((r).pte) >> 12) & 0xf))
 #define __rpte_to_pte(r)        ((r).pte)
diff --git a/arch/powerpc/include/asm/rtas.h b/arch/powerpc/include/asm/rtas.h
index 01c12339b304..168fce726201 100644
--- a/arch/powerpc/include/asm/rtas.h
+++ b/arch/powerpc/include/asm/rtas.h
@@ -58,7 +58,7 @@ struct rtas_t {
         unsigned long entry;            /* physical address pointer */
         unsigned long base;             /* physical address pointer */
         unsigned long size;
-        spinlock_t lock;
+        raw_spinlock_t lock;
         struct rtas_args args;
         struct device_node *dev;        /* virtual address pointer */
 };
@@ -245,5 +245,8 @@ static inline u32 rtas_config_addr(int busno, int devfn, int reg)
                         (devfn << 8) | (reg & 0xff);
 }
 
+extern void __cpuinit rtas_give_timebase(void);
+extern void __cpuinit rtas_take_timebase(void);
+
 #endif /* __KERNEL__ */
 #endif /* _POWERPC_RTAS_H */
diff --git a/arch/powerpc/include/asm/thread_info.h b/arch/powerpc/include/asm/thread_info.h
index 9aba5a38a7c4..c8b329255678 100644
--- a/arch/powerpc/include/asm/thread_info.h
+++ b/arch/powerpc/include/asm/thread_info.h
@@ -46,15 +46,13 @@ struct thread_info {
 
 /*
  * macros/functions for gaining access to the thread information structure
- *
- * preempt_count needs to be 1 initially, until the scheduler is functional.
  */
 #define INIT_THREAD_INFO(tsk)                   \
 {                                               \
         .task =         &tsk,                   \
         .exec_domain =  &default_exec_domain,   \
         .cpu =          0,                      \
-        .preempt_count = 1,                     \
+        .preempt_count = INIT_PREEMPT_COUNT,    \
         .restart_block = {                      \
                 .fn = do_no_restart_syscall,    \
         },                                      \