14 files changed, 74 insertions, 24 deletions

diff --git a/arch/powerpc/Kconfig b/arch/powerpc/Kconfig
index 5ada5b45cbb1..67668fdb0292 100644
--- a/arch/powerpc/Kconfig
+++ b/arch/powerpc/Kconfig
@@ -120,6 +120,19 @@ config GENERIC_BUG
 config SYS_SUPPORTS_APM_EMULATION
         bool
 
+#
+# Powerpc uses the slab allocator to manage its ptes and the
+# page structs of ptes are used for splitting the page table
+# lock for configurations supporting more than SPLIT_PTLOCK_CPUS.
+#
+# In that special configuration the page structs of slabs are modified.
+# This setting disables the selection of SLUB as a slab allocator.
+#
+config ARCH_USES_SLAB_PAGE_STRUCT
+        bool
+        default y
+        depends on SPLIT_PTLOCK_CPUS <= NR_CPUS
+
 config DEFAULT_UIMAGE
         bool
         help
diff --git a/arch/powerpc/kernel/Makefile b/arch/powerpc/kernel/Makefile
index 4dc73b8c25ba..94c703a95013 100644
--- a/arch/powerpc/kernel/Makefile
+++ b/arch/powerpc/kernel/Makefile
@@ -36,7 +36,7 @@ obj-$(CONFIG_GENERIC_TBSYNC)	+= smp-tbsync.o
 obj-$(CONFIG_CRASH_DUMP)        += crash_dump.o
 obj-$(CONFIG_6xx)               += idle_6xx.o l2cr_6xx.o cpu_setup_6xx.o
 obj-$(CONFIG_TAU)               += tau_6xx.o
-obj-$(CONFIG_SOFTWARE_SUSPEND)  += swsusp.o
+obj-$(CONFIG_SOFTWARE_SUSPEND)  += swsusp.o suspend.o
 obj32-$(CONFIG_SOFTWARE_SUSPEND) += swsusp_32.o
 obj64-$(CONFIG_SOFTWARE_SUSPEND) += swsusp_64.o swsusp_asm64.o
 obj32-$(CONFIG_MODULES)         += module_32.o
diff --git a/arch/powerpc/kernel/legacy_serial.c b/arch/powerpc/kernel/legacy_serial.c
index 662cd67428de..cea8045ba40b 100644
--- a/arch/powerpc/kernel/legacy_serial.c
+++ b/arch/powerpc/kernel/legacy_serial.c
@@ -115,7 +115,8 @@ static int __init add_legacy_soc_port(struct device_node *np,
 {
         u64 addr;
         const u32 *addrp;
-        upf_t flags = UPF_BOOT_AUTOCONF | UPF_SKIP_TEST | UPF_SHARE_IRQ;
+        upf_t flags = UPF_BOOT_AUTOCONF | UPF_SKIP_TEST | UPF_SHARE_IRQ
+                | UPF_FIXED_PORT;
         struct device_node *tsi = of_get_parent(np);
 
         /* We only support ports that have a clock frequency properly
diff --git a/arch/powerpc/kernel/pci_64.c b/arch/powerpc/kernel/pci_64.c
index 706b7f3da5ff..6d05a1f377b5 100644
--- a/arch/powerpc/kernel/pci_64.c
+++ b/arch/powerpc/kernel/pci_64.c
@@ -340,7 +340,7 @@ struct pci_dev *of_create_pci_dev(struct device_node *node,
         struct pci_dev *dev;
         const char *type;
 
-        dev = kzalloc(sizeof(struct pci_dev), GFP_KERNEL);
+        dev = alloc_pci_dev();
         if (!dev)
                 return NULL;
         type = of_get_property(node, "device_type", NULL);
diff --git a/arch/powerpc/kernel/setup_64.c b/arch/powerpc/kernel/setup_64.c
index 22083ce3cc30..6018178708a5 100644
--- a/arch/powerpc/kernel/setup_64.c
+++ b/arch/powerpc/kernel/setup_64.c
@@ -582,14 +582,14 @@ void __init setup_per_cpu_areas(void)
         char *ptr;
 
         /* Copy section for each CPU (we discard the original) */
-        size = ALIGN(__per_cpu_end - __per_cpu_start, SMP_CACHE_BYTES);
+        size = ALIGN(__per_cpu_end - __per_cpu_start, PAGE_SIZE);
 #ifdef CONFIG_MODULES
         if (size < PERCPU_ENOUGH_ROOM)
                 size = PERCPU_ENOUGH_ROOM;
 #endif
 
         for_each_possible_cpu(i) {
-                ptr = alloc_bootmem_node(NODE_DATA(cpu_to_node(i)), size);
+                ptr = alloc_bootmem_pages_node(NODE_DATA(cpu_to_node(i)), size);
                 if (!ptr)
                         panic("Cannot allocate cpu data for CPU %d\n", i);
 
diff --git a/arch/powerpc/kernel/suspend.c b/arch/powerpc/kernel/suspend.c
new file mode 100644
index 000000000000..8cee57107541
--- /dev/null
+++ b/arch/powerpc/kernel/suspend.c
@@ -0,0 +1,24 @@
+/*
+ * Suspend support specific for power.
+ *
+ * Distribute under GPLv2
+ *
+ * Copyright (c) 2002 Pavel Machek <pavel@suse.cz>
+ * Copyright (c) 2001 Patrick Mochel <mochel@osdl.org>
+ */
+
+#include <asm/page.h>
+
+/* References to section boundaries */
+extern const void __nosave_begin, __nosave_end;
+
+/*
+ *      pfn_is_nosave - check if given pfn is in the 'nosave' section
+ */
+
+int pfn_is_nosave(unsigned long pfn)
+{
+        unsigned long nosave_begin_pfn = __pa(&__nosave_begin) >> PAGE_SHIFT;
+        unsigned long nosave_end_pfn = PAGE_ALIGN(__pa(&__nosave_end)) >> PAGE_SHIFT;
+        return (pfn >= nosave_begin_pfn) && (pfn < nosave_end_pfn);
+}
diff --git a/arch/powerpc/kernel/vio.c b/arch/powerpc/kernel/vio.c
index ec871063733a..62c1bc12ea39 100644
--- a/arch/powerpc/kernel/vio.c
+++ b/arch/powerpc/kernel/vio.c
@@ -37,7 +37,7 @@
 #include <asm/iseries/hv_call_xm.h>
 #include <asm/iseries/iommu.h>
 
-extern struct subsystem devices_subsys; /* needed for vio_find_name() */
+extern struct kset devices_subsys; /* needed for vio_find_name() */
 
 static struct vio_dev vio_bus_device  = { /* fake "parent" device */
         .name = vio_bus_device.dev.bus_id,
@@ -427,7 +427,7 @@ static struct vio_dev *vio_find_name(const char *kobj_name)
 {
         struct kobject *found;
 
-        found = kset_find_obj(&devices_subsys.kset, kobj_name);
+        found = kset_find_obj(&devices_subsys, kobj_name);
         if (!found)
                 return NULL;
 
diff --git a/arch/powerpc/kernel/vmlinux.lds.S b/arch/powerpc/kernel/vmlinux.lds.S
index 7eefeb4a30e7..132067313147 100644
--- a/arch/powerpc/kernel/vmlinux.lds.S
+++ b/arch/powerpc/kernel/vmlinux.lds.S
@@ -139,11 +139,7 @@ SECTIONS
                 __initramfs_end = .;
         }
 #endif
-#ifdef CONFIG_PPC32
-        . = ALIGN(32);
-#else
-        . = ALIGN(128);
-#endif
+        . = ALIGN(PAGE_SIZE);
         .data.percpu : {
                 __per_cpu_start = .;
                 *(.data.percpu)
diff --git a/arch/powerpc/mm/hugetlbpage.c b/arch/powerpc/mm/hugetlbpage.c
index 8508f973d9cc..1f07f70ac89f 100644
--- a/arch/powerpc/mm/hugetlbpage.c
+++ b/arch/powerpc/mm/hugetlbpage.c
@@ -566,6 +566,13 @@ unsigned long arch_get_unmapped_area(struct file *filp, unsigned long addr,
         if (len > TASK_SIZE)
                 return -ENOMEM;
 
+        /* handle fixed mapping: prevent overlap with huge pages */
+        if (flags & MAP_FIXED) {
+                if (is_hugepage_only_range(mm, addr, len))
+                        return -EINVAL;
+                return addr;
+        }
+
         if (addr) {
                 addr = PAGE_ALIGN(addr);
                 vma = find_vma(mm, addr);
@@ -641,6 +648,13 @@ arch_get_unmapped_area_topdown(struct file *filp, const unsigned long addr0,
         if (len > TASK_SIZE)
                 return -ENOMEM;
 
+        /* handle fixed mapping: prevent overlap with huge pages */
+        if (flags & MAP_FIXED) {
+                if (is_hugepage_only_range(mm, addr, len))
+                        return -EINVAL;
+                return addr;
+        }
+
         /* dont allow allocations above current base */
         if (mm->free_area_cache > base)
                 mm->free_area_cache = base;
@@ -823,6 +837,13 @@ unsigned long hugetlb_get_unmapped_area(struct file *file, unsigned long addr,
         /* Paranoia, caller should have dealt with this */
         BUG_ON((addr + len)  < addr);
 
+        /* Handle MAP_FIXED */
+        if (flags & MAP_FIXED) {
+                if (prepare_hugepage_range(addr, len, pgoff))
+                        return -EINVAL;
+                return addr;
+        }
+
         if (test_thread_flag(TIF_32BIT)) {
                 curareas = current->mm->context.low_htlb_areas;
 
@@ -1057,8 +1078,7 @@ static int __init hugetlbpage_init(void)
         huge_pgtable_cache = kmem_cache_create("hugepte_cache",
                                                HUGEPTE_TABLE_SIZE,
                                                HUGEPTE_TABLE_SIZE,
-                                               SLAB_HWCACHE_ALIGN |
-                                               SLAB_MUST_HWCACHE_ALIGN,
+                                               0,
                                                zero_ctor, NULL);
         if (! huge_pgtable_cache)
                 panic("hugetlbpage_init(): could not create hugepte cache\n");
diff --git a/arch/powerpc/mm/init_64.c b/arch/powerpc/mm/init_64.c
index d12a87ec5ae9..4416d5140c53 100644
--- a/arch/powerpc/mm/init_64.c
+++ b/arch/powerpc/mm/init_64.c
@@ -183,8 +183,7 @@ void pgtable_cache_init(void)
                     "for size: %08x...\n", name, i, size);
                 pgtable_cache[i] = kmem_cache_create(name,
                                                      size, size,
-                                                     SLAB_HWCACHE_ALIGN |
-                                                     SLAB_MUST_HWCACHE_ALIGN,
+                                                     0,
                                                      zero_ctor,
                                                      NULL);
                 if (! pgtable_cache[i])
diff --git a/arch/powerpc/platforms/cell/spufs/inode.c b/arch/powerpc/platforms/cell/spufs/inode.c
index 13e4f70ec8c0..a93f328a7317 100644
--- a/arch/powerpc/platforms/cell/spufs/inode.c
+++ b/arch/powerpc/platforms/cell/spufs/inode.c
@@ -71,8 +71,7 @@ spufs_init_once(void *p, struct kmem_cache * cachep, unsigned long flags)
 {
         struct spufs_inode_info *ei = p;
 
-        if ((flags & (SLAB_CTOR_VERIFY|SLAB_CTOR_CONSTRUCTOR)) ==
-            SLAB_CTOR_CONSTRUCTOR) {
+        if (flags & SLAB_CTOR_CONSTRUCTOR) {
                 inode_init_once(&ei->vfs_inode);
         }
 }
diff --git a/arch/powerpc/platforms/powermac/cpufreq_32.c b/arch/powerpc/platforms/powermac/cpufreq_32.c
index 8943a9456bb7..1fe35dab0e9e 100644
--- a/arch/powerpc/platforms/powermac/cpufreq_32.c
+++ b/arch/powerpc/platforms/powermac/cpufreq_32.c
@@ -25,7 +25,6 @@
 #include <linux/cpufreq.h>
 #include <linux/init.h>
 #include <linux/sysdev.h>
-#include <linux/i2c.h>
 #include <linux/hardirq.h>
 #include <asm/prom.h>
 #include <asm/machdep.h>
diff --git a/arch/powerpc/platforms/pseries/power.c b/arch/powerpc/platforms/pseries/power.c
index 2624b71df73d..73e69023d90a 100644
--- a/arch/powerpc/platforms/pseries/power.c
+++ b/arch/powerpc/platforms/pseries/power.c
@@ -28,13 +28,13 @@
 
 unsigned long rtas_poweron_auto; /* default and normal state is 0 */
 
-static ssize_t auto_poweron_show(struct subsystem *subsys, char *buf)
+static ssize_t auto_poweron_show(struct kset *kset, char *buf)
 {
         return sprintf(buf, "%lu\n", rtas_poweron_auto);
 }
 
 static ssize_t
-auto_poweron_store(struct subsystem *subsys, const char *buf, size_t n)
+auto_poweron_store(struct kset *kset, const char *buf, size_t n)
 {
         int ret;
         unsigned long ups_restart;
@@ -72,12 +72,12 @@ static int __init pm_init(void)
 {
         int error = subsystem_register(&power_subsys);
         if (!error)
-                error = sysfs_create_group(&power_subsys.kset.kobj,&attr_group);
+                error = sysfs_create_group(&power_subsys.kobj, &attr_group);
         return error;
 }
 core_initcall(pm_init);
 #else
-extern struct subsystem power_subsys;
+extern struct kset power_subsys;
 
 static int __init apo_pm_init(void)
 {
diff --git a/arch/powerpc/platforms/pseries/ras.c b/arch/powerpc/platforms/pseries/ras.c
index 53aa04101ced..3a393c7f390e 100644
--- a/arch/powerpc/platforms/pseries/ras.c
+++ b/arch/powerpc/platforms/pseries/ras.c
@@ -31,7 +31,6 @@
 #include <linux/timex.h>
 #include <linux/init.h>
 #include <linux/slab.h>
-#include <linux/pci.h>
 #include <linux/delay.h>
 #include <linux/irq.h>
 #include <linux/random.h>