Merge branch 'for-linus' of git://git390.osdl.marist.edu/pub/scm/linux-2.6

* 'for-linus' of git://git390.osdl.marist.edu/pub/scm/linux-2.6:
  [S390] Update default configuration.
  [S390] disassembler: fix idte instruction format.
  [S390] tape: fix race with stack local wait_queue_head_t.
  [S390] 3270: fix race with stack local wait_queue_head_t.
  [S390] dasd: use a generic wait_queue for sleep_on
  [S390] sclp_vt220: fix scheduling while atomic bug.
  [S390] showmem: Only walk spanned pages.
  [S390] appldata: prevent cpu hotplug when walking cpu_online_map.
  [S390] Fix section mismatch warnings.
  [S390] s390 types: make dma_addr_t 64 bit capable
  [S390] tape: Fix race condition in tape block device driver
  [S390] fix sparsemem related compile error with allnoconfig on s390

7 files changed, 57 insertions, 36 deletions

diff --git a/arch/s390/Kconfig b/arch/s390/Kconfig
index 1d035082e78e..93acb3c1859d 100644
--- a/arch/s390/Kconfig
+++ b/arch/s390/Kconfig
@@ -308,6 +308,9 @@ config ARCH_SPARSEMEM_ENABLE
 config ARCH_SPARSEMEM_DEFAULT
         def_bool y
 
+config ARCH_SELECT_MEMORY_MODEL
+       def_bool y
+
 source "mm/Kconfig"
 
 comment "I/O subsystem configuration"
diff --git a/arch/s390/appldata/appldata_base.c b/arch/s390/appldata/appldata_base.c
index 655d52543e2d..ad40729bec3d 100644
--- a/arch/s390/appldata/appldata_base.c
+++ b/arch/s390/appldata/appldata_base.c
@@ -130,6 +130,7 @@ static void appldata_work_fn(struct work_struct *work)
 
         P_DEBUG("  -= Work Queue =-\n");
         i = 0;
+        get_online_cpus();
         spin_lock(&appldata_ops_lock);
         list_for_each(lh, &appldata_ops_list) {
                 ops = list_entry(lh, struct appldata_ops, list);
@@ -140,6 +141,7 @@ static void appldata_work_fn(struct work_struct *work)
                 }
         }
         spin_unlock(&appldata_ops_lock);
+        put_online_cpus();
 }
 
 /*
@@ -266,12 +268,14 @@ appldata_timer_handler(ctl_table *ctl, int write, struct file *filp,
         len = *lenp;
         if (copy_from_user(buf, buffer, len > sizeof(buf) ? sizeof(buf) : len))
                 return -EFAULT;
+        get_online_cpus();
         spin_lock(&appldata_timer_lock);
         if (buf[0] == '1')
                 __appldata_vtimer_setup(APPLDATA_ADD_TIMER);
         else if (buf[0] == '0')
                 __appldata_vtimer_setup(APPLDATA_DEL_TIMER);
         spin_unlock(&appldata_timer_lock);
+        put_online_cpus();
 out:
         *lenp = len;
         *ppos += len;
@@ -314,10 +318,12 @@ appldata_interval_handler(ctl_table *ctl, int write, struct file *filp,
                 return -EINVAL;
         }
 
+        get_online_cpus();
         spin_lock(&appldata_timer_lock);
         appldata_interval = interval;
         __appldata_vtimer_setup(APPLDATA_MOD_TIMER);
         spin_unlock(&appldata_timer_lock);
+        put_online_cpus();
 
         P_INFO("Monitoring CPU interval set to %u milliseconds.\n",
                  interval);
@@ -556,8 +562,10 @@ static int __init appldata_init(void)
                 return -ENOMEM;
         }
 
+        get_online_cpus();
         for_each_online_cpu(i)
                 appldata_online_cpu(i);
+        put_online_cpus();
 
         /* Register cpu hotplug notifier */
         register_hotcpu_notifier(&appldata_nb);
diff --git a/arch/s390/defconfig b/arch/s390/defconfig
index aa341d0ea1e6..c5cdb975d590 100644
--- a/arch/s390/defconfig
+++ b/arch/s390/defconfig
@@ -1,7 +1,7 @@
 #
 # Automatically generated make config: don't edit
-# Linux kernel version: 2.6.25
-# Wed Apr 30 11:07:45 2008
+# Linux kernel version: 2.6.26-rc4
+# Fri May 30 09:49:33 2008
 #
 CONFIG_SCHED_MC=y
 CONFIG_MMU=y
@@ -103,6 +103,7 @@ CONFIG_RT_MUTEXES=y
 # CONFIG_TINY_SHMEM is not set
 CONFIG_BASE_SMALL=0
 CONFIG_MODULES=y
+# CONFIG_MODULE_FORCE_LOAD is not set
 CONFIG_MODULE_UNLOAD=y
 # CONFIG_MODULE_FORCE_UNLOAD is not set
 CONFIG_MODVERSIONS=y
@@ -173,6 +174,7 @@ CONFIG_PREEMPT=y
 # CONFIG_PREEMPT_RCU is not set
 CONFIG_ARCH_SPARSEMEM_ENABLE=y
 CONFIG_ARCH_SPARSEMEM_DEFAULT=y
+CONFIG_ARCH_SELECT_MEMORY_MODEL=y
 CONFIG_SELECT_MEMORY_MODEL=y
 # CONFIG_FLATMEM_MANUAL is not set
 # CONFIG_DISCONTIGMEM_MANUAL is not set
@@ -210,6 +212,7 @@ CONFIG_FORCE_MAX_ZONEORDER=9
 CONFIG_PFAULT=y
 # CONFIG_SHARED_KERNEL is not set
 # CONFIG_CMM is not set
+# CONFIG_PAGE_STATES is not set
 CONFIG_VIRT_TIMER=y
 CONFIG_VIRT_CPU_ACCOUNTING=y
 # CONFIG_APPLDATA_BASE is not set
@@ -620,6 +623,7 @@ CONFIG_S390_VMUR=m
 #
 # CONFIG_MEMSTICK is not set
 # CONFIG_NEW_LEDS is not set
+CONFIG_ACCESSIBILITY=y
 
 #
 # File systems
@@ -754,11 +758,12 @@ CONFIG_FRAME_WARN=2048
 CONFIG_MAGIC_SYSRQ=y
 # CONFIG_UNUSED_SYMBOLS is not set
 CONFIG_DEBUG_FS=y
-CONFIG_HEADERS_CHECK=y
+# CONFIG_HEADERS_CHECK is not set
 CONFIG_DEBUG_KERNEL=y
 # CONFIG_SCHED_DEBUG is not set
 # CONFIG_SCHEDSTATS is not set
 # CONFIG_TIMER_STATS is not set
+# CONFIG_DEBUG_OBJECTS is not set
 # CONFIG_DEBUG_SLAB is not set
 CONFIG_DEBUG_PREEMPT=y
 # CONFIG_DEBUG_RT_MUTEXES is not set
diff --git a/arch/s390/kernel/dis.c b/arch/s390/kernel/dis.c
index c14a336f6300..d2f270c995d9 100644
--- a/arch/s390/kernel/dis.c
+++ b/arch/s390/kernel/dis.c
@@ -208,7 +208,7 @@ static const unsigned char formats[][7] = {
         [INSTR_RRF_F0FF]  = { 0xff, F_16,F_24,F_28,0,0,0 },    /* e.g. madbr */
         [INSTR_RRF_FUFF]  = { 0xff, F_24,F_16,F_28,U4_20,0,0 },/* e.g. didbr */
         [INSTR_RRF_RURR]  = { 0xff, R_24,R_28,R_16,U4_20,0,0 },/* e.g. .insn */
-        [INSTR_RRF_R0RR]  = { 0xff, R_24,R_28,R_16,0,0,0 },    /* e.g. idte  */
+        [INSTR_RRF_R0RR]  = { 0xff, R_24,R_16,R_28,0,0,0 },    /* e.g. idte  */
         [INSTR_RRF_U0FF]  = { 0xff, F_24,U4_16,F_28,0,0,0 },   /* e.g. fixr  */
         [INSTR_RRF_U0RF]  = { 0xff, R_24,U4_16,F_28,0,0,0 },   /* e.g. cfebr */
         [INSTR_RRF_M0RR]  = { 0xff, R_24,R_28,M_16,0,0,0 },    /* e.g. sske  */
diff --git a/arch/s390/kernel/smp.c b/arch/s390/kernel/smp.c
index 1f4228948dc4..42b1d12ebb10 100644
--- a/arch/s390/kernel/smp.c
+++ b/arch/s390/kernel/smp.c
@@ -1089,7 +1089,7 @@ out:
 
 #ifdef CONFIG_HOTPLUG_CPU
 
-int smp_rescan_cpus(void)
+int __ref smp_rescan_cpus(void)
 {
         cpumask_t newcpus;
         int cpu;
diff --git a/arch/s390/mm/init.c b/arch/s390/mm/init.c
index 29f3a63806b9..05598649b326 100644
--- a/arch/s390/mm/init.c
+++ b/arch/s390/mm/init.c
@@ -44,37 +44,34 @@ char  empty_zero_page[PAGE_SIZE] __attribute__((__aligned__(PAGE_SIZE)));
 
 void show_mem(void)
 {
-        int i, total = 0, reserved = 0;
-        int shared = 0, cached = 0;
+        unsigned long i, total = 0, reserved = 0;
+        unsigned long shared = 0, cached = 0;
+        unsigned long flags;
         struct page *page;
+        pg_data_t *pgdat;
 
         printk("Mem-info:\n");
         show_free_areas();
-        i = max_mapnr;
-        while (i-- > 0) {
-                if (!pfn_valid(i))
-                        continue;
-                page = pfn_to_page(i);
-                total++;
-                if (PageReserved(page))
-                        reserved++;
-                else if (PageSwapCache(page))
-                        cached++;
-                else if (page_count(page))
-                        shared += page_count(page) - 1;
+        for_each_online_pgdat(pgdat) {
+                pgdat_resize_lock(pgdat, &flags);
+                for (i = 0; i < pgdat->node_spanned_pages; i++) {
+                        if (!pfn_valid(pgdat->node_start_pfn + i))
+                                continue;
+                        page = pfn_to_page(pgdat->node_start_pfn + i);
+                        total++;
+                        if (PageReserved(page))
+                                reserved++;
+                        else if (PageSwapCache(page))
+                                cached++;
+                        else if (page_count(page))
+                                shared += page_count(page) - 1;
+                }
+                pgdat_resize_unlock(pgdat, &flags);
         }
-        printk("%d pages of RAM\n", total);
-        printk("%d reserved pages\n", reserved);
-        printk("%d pages shared\n", shared);
-        printk("%d pages swap cached\n", cached);
-
-        printk("%lu pages dirty\n", global_page_state(NR_FILE_DIRTY));
-        printk("%lu pages writeback\n", global_page_state(NR_WRITEBACK));
-        printk("%lu pages mapped\n", global_page_state(NR_FILE_MAPPED));
-        printk("%lu pages slab\n",
-               global_page_state(NR_SLAB_RECLAIMABLE) +
-               global_page_state(NR_SLAB_UNRECLAIMABLE));
-        printk("%lu pages pagetables\n", global_page_state(NR_PAGETABLE));
+        printk("%ld pages of RAM\n", total);
+        printk("%ld reserved pages\n", reserved);
+        printk("%ld pages shared\n", shared);
+        printk("%ld pages swap cached\n", cached);
 }
 
 /*
diff --git a/arch/s390/mm/vmem.c b/arch/s390/mm/vmem.c
index ea2804808f39..f591188fa2c0 100644
--- a/arch/s390/mm/vmem.c
+++ b/arch/s390/mm/vmem.c
@@ -27,12 +27,19 @@ struct memory_segment {
 
 static LIST_HEAD(mem_segs);
 
-static pud_t *vmem_pud_alloc(void)
+static void __ref *vmem_alloc_pages(unsigned int order)
+{
+        if (slab_is_available())
+                return (void *)__get_free_pages(GFP_KERNEL, order);
+        return alloc_bootmem_pages((1 << order) * PAGE_SIZE);
+}
+
+static inline pud_t *vmem_pud_alloc(void)
 {
         pud_t *pud = NULL;
 
 #ifdef CONFIG_64BIT
-        pud = vmemmap_alloc_block(PAGE_SIZE * 4, 0);
+        pud = vmem_alloc_pages(2);
         if (!pud)
                 return NULL;
         clear_table((unsigned long *) pud, _REGION3_ENTRY_EMPTY, PAGE_SIZE * 4);
@@ -40,12 +47,12 @@ static pud_t *vmem_pud_alloc(void)
         return pud;
 }
 
-static pmd_t *vmem_pmd_alloc(void)
+static inline pmd_t *vmem_pmd_alloc(void)
 {
         pmd_t *pmd = NULL;
 
 #ifdef CONFIG_64BIT
-        pmd = vmemmap_alloc_block(PAGE_SIZE * 4, 0);
+        pmd = vmem_alloc_pages(2);
         if (!pmd)
                 return NULL;
         clear_table((unsigned long *) pmd, _SEGMENT_ENTRY_EMPTY, PAGE_SIZE * 4);
@@ -207,13 +214,14 @@ int __meminit vmemmap_populate(struct page *start, unsigned long nr, int node)
                 if (pte_none(*pt_dir)) {
                         unsigned long new_page;
 
-                        new_page =__pa(vmemmap_alloc_block(PAGE_SIZE, 0));
+                        new_page =__pa(vmem_alloc_pages(0));
                         if (!new_page)
                                 goto out;
                         pte = pfn_pte(new_page >> PAGE_SHIFT, PAGE_KERNEL);
                         *pt_dir = pte;
                 }
         }
+        memset(start, 0, nr * sizeof(struct page));
         ret = 0;
 out:
         flush_tlb_kernel_range(start_addr, end_addr);