Auto-update from upstream

5 files changed, 139 insertions, 120 deletions

diff --git a/arch/ia64/kernel/acpi.c b/arch/ia64/kernel/acpi.c
index 58c93a30348c..6ea642beaaee 100644
--- a/arch/ia64/kernel/acpi.c
+++ b/arch/ia64/kernel/acpi.c
@@ -68,8 +68,6 @@ EXPORT_SYMBOL(pm_power_off);
 unsigned char acpi_kbd_controller_present = 1;
 unsigned char acpi_legacy_devices;
 
-static unsigned int __initdata acpi_madt_rev;
-
 unsigned int acpi_cpei_override;
 unsigned int acpi_cpei_phys_cpuid;
 
@@ -243,6 +241,8 @@ acpi_parse_iosapic(acpi_table_entry_header * header, const unsigned long end)
         return iosapic_init(iosapic->address, iosapic->global_irq_base);
 }
 
+static unsigned int __initdata acpi_madt_rev;
+
 static int __init
 acpi_parse_plat_int_src(acpi_table_entry_header * header,
                         const unsigned long end)
@@ -415,9 +415,6 @@ static int __initdata srat_num_cpus;	/* number of cpus */
 static u32 __devinitdata pxm_flag[PXM_FLAG_LEN];
 #define pxm_bit_set(bit)        (set_bit(bit,(void *)pxm_flag))
 #define pxm_bit_test(bit)       (test_bit(bit,(void *)pxm_flag))
-/* maps to convert between proximity domain and logical node ID */
-int __devinitdata pxm_to_nid_map[MAX_PXM_DOMAINS];
-int __initdata nid_to_pxm_map[MAX_NUMNODES];
 static struct acpi_table_slit __initdata *slit_table;
 
 static int get_processor_proximity_domain(struct acpi_table_processor_affinity *pa)
@@ -533,22 +530,17 @@ void __init acpi_numa_arch_fixup(void)
          * MCD - This can probably be dropped now.  No need for pxm ID to node ID
          * mapping with sparse node numbering iff MAX_PXM_DOMAINS <= MAX_NUMNODES.
          */
-        /* calculate total number of nodes in system from PXM bitmap */
-        memset(pxm_to_nid_map, -1, sizeof(pxm_to_nid_map));
-        memset(nid_to_pxm_map, -1, sizeof(nid_to_pxm_map));
         nodes_clear(node_online_map);
         for (i = 0; i < MAX_PXM_DOMAINS; i++) {
                 if (pxm_bit_test(i)) {
-                        int nid = num_online_nodes();
-                        pxm_to_nid_map[i] = nid;
-                        nid_to_pxm_map[nid] = i;
+                        int nid = acpi_map_pxm_to_node(i);
                         node_set_online(nid);
                 }
         }
 
         /* set logical node id in memory chunk structure */
         for (i = 0; i < num_node_memblks; i++)
-                node_memblk[i].nid = pxm_to_nid_map[node_memblk[i].nid];
+                node_memblk[i].nid = pxm_to_node(node_memblk[i].nid);
 
         /* assign memory bank numbers for each chunk on each node */
         for_each_online_node(i) {
@@ -562,7 +554,7 @@ void __init acpi_numa_arch_fixup(void)
 
         /* set logical node id in cpu structure */
         for (i = 0; i < srat_num_cpus; i++)
-                node_cpuid[i].nid = pxm_to_nid_map[node_cpuid[i].nid];
+                node_cpuid[i].nid = pxm_to_node(node_cpuid[i].nid);
 
         printk(KERN_INFO "Number of logical nodes in system = %d\n",
                num_online_nodes());
@@ -575,11 +567,11 @@ void __init acpi_numa_arch_fixup(void)
         for (i = 0; i < slit_table->localities; i++) {
                 if (!pxm_bit_test(i))
                         continue;
-                node_from = pxm_to_nid_map[i];
+                node_from = pxm_to_node(i);
                 for (j = 0; j < slit_table->localities; j++) {
                         if (!pxm_bit_test(j))
                                 continue;
-                        node_to = pxm_to_nid_map[j];
+                        node_to = pxm_to_node(j);
                         node_distance(node_from, node_to) =
                             slit_table->entry[i * slit_table->localities + j];
                 }
@@ -785,9 +777,9 @@ int acpi_map_cpu2node(acpi_handle handle, int cpu, long physid)
 
         /*
          * Assuming that the container driver would have set the proximity
-         * domain and would have initialized pxm_to_nid_map[pxm_id] && pxm_flag
+         * domain and would have initialized pxm_to_node(pxm_id) && pxm_flag
          */
-        node_cpuid[cpu].nid = (pxm_id < 0) ? 0 : pxm_to_nid_map[pxm_id];
+        node_cpuid[cpu].nid = (pxm_id < 0) ? 0 : pxm_to_node(pxm_id);
 
         node_cpuid[cpu].phys_id = physid;
 #endif
@@ -966,7 +958,7 @@ acpi_map_iosapic(acpi_handle handle, u32 depth, void *context, void **ret)
         if (pxm < 0)
                 return AE_OK;
 
-        node = pxm_to_nid_map[pxm];
+        node = pxm_to_node(pxm);
 
         if (node >= MAX_NUMNODES || !node_online(node) ||
             cpus_empty(node_to_cpumask(node)))
diff --git a/arch/ia64/kernel/entry.S b/arch/ia64/kernel/entry.S
index bcb80ca5cf40..32c999f58d12 100644
--- a/arch/ia64/kernel/entry.S
+++ b/arch/ia64/kernel/entry.S
@@ -1584,7 +1584,7 @@ sys_call_table:
         data8 sys_keyctl
         data8 sys_ioprio_set
         data8 sys_ioprio_get                    // 1275
-        data8 sys_ni_syscall
+        data8 sys_move_pages
         data8 sys_inotify_init
         data8 sys_inotify_add_watch
         data8 sys_inotify_rm_watch
diff --git a/arch/ia64/kernel/irq_ia64.c b/arch/ia64/kernel/irq_ia64.c
index 6c4d59fd0364..ef9a2b49307a 100644
--- a/arch/ia64/kernel/irq_ia64.c
+++ b/arch/ia64/kernel/irq_ia64.c
@@ -46,6 +46,10 @@
 
 #define IRQ_DEBUG       0
 
+/* These can be overridden in platform_irq_init */
+int ia64_first_device_vector = IA64_DEF_FIRST_DEVICE_VECTOR;
+int ia64_last_device_vector = IA64_DEF_LAST_DEVICE_VECTOR;
+
 /* default base addr of IPI table */
 void __iomem *ipi_base_addr = ((void __iomem *)
                                (__IA64_UNCACHED_OFFSET | IA64_IPI_DEFAULT_BASE_ADDR));
@@ -60,7 +64,7 @@ __u8 isa_irq_to_vector_map[16] = {
 };
 EXPORT_SYMBOL(isa_irq_to_vector_map);
 
-static unsigned long ia64_vector_mask[BITS_TO_LONGS(IA64_NUM_DEVICE_VECTORS)];
+static unsigned long ia64_vector_mask[BITS_TO_LONGS(IA64_MAX_DEVICE_VECTORS)];
 
 int
 assign_irq_vector (int irq)
@@ -89,6 +93,19 @@ free_irq_vector (int vector)
                 printk(KERN_WARNING "%s: double free!\n", __FUNCTION__);
 }
 
+int
+reserve_irq_vector (int vector)
+{
+        int pos;
+
+        if (vector < IA64_FIRST_DEVICE_VECTOR ||
+            vector > IA64_LAST_DEVICE_VECTOR)
+                return -EINVAL;
+
+        pos = vector - IA64_FIRST_DEVICE_VECTOR;
+        return test_and_set_bit(pos, ia64_vector_mask);
+}
+
 #ifdef CONFIG_SMP
 #       define IS_RESCHEDULE(vec)       (vec == IA64_IPI_RESCHEDULE)
 #else
diff --git a/arch/ia64/kernel/perfmon.c b/arch/ia64/kernel/perfmon.c
index 077f21216b65..6d7bc8ff7b3a 100644
--- a/arch/ia64/kernel/perfmon.c
+++ b/arch/ia64/kernel/perfmon.c
@@ -532,7 +532,6 @@ static ctl_table pfm_sysctl_root[] = {
 static struct ctl_table_header *pfm_sysctl_header;
 
 static int pfm_context_unload(pfm_context_t *ctx, void *arg, int count, struct pt_regs *regs);
-static int pfm_flush(struct file *filp);
 
 #define pfm_get_cpu_var(v)              __ia64_per_cpu_var(v)
 #define pfm_get_cpu_data(a,b)           per_cpu(a, b)
@@ -595,10 +594,11 @@ pfm_get_unmapped_area(struct file *file, unsigned long addr, unsigned long len,
 }
 
 
-static struct super_block *
-pfmfs_get_sb(struct file_system_type *fs_type, int flags, const char *dev_name, void *data)
+static int
+pfmfs_get_sb(struct file_system_type *fs_type, int flags, const char *dev_name, void *data,
+             struct vfsmount *mnt)
 {
-        return get_sb_pseudo(fs_type, "pfm:", NULL, PFMFS_MAGIC);
+        return get_sb_pseudo(fs_type, "pfm:", NULL, PFMFS_MAGIC, mnt);
 }
 
 static struct file_system_type pfm_fs_type = {
@@ -1773,7 +1773,7 @@ pfm_syswide_cleanup_other_cpu(pfm_context_t *ctx)
  * When caller is self-monitoring, the context is unloaded.
  */
 static int
-pfm_flush(struct file *filp)
+pfm_flush(struct file *filp, fl_owner_t id)
 {
         pfm_context_t *ctx;
         struct task_struct *task;
diff --git a/arch/ia64/kernel/uncached.c b/arch/ia64/kernel/uncached.c
index fcd2bad0286f..5f03b9e524dd 100644
--- a/arch/ia64/kernel/uncached.c
+++ b/arch/ia64/kernel/uncached.c
@@ -1,5 +1,5 @@
 /*
- * Copyright (C) 2001-2005 Silicon Graphics, Inc.  All rights reserved.
+ * Copyright (C) 2001-2006 Silicon Graphics, Inc.  All rights reserved.
  *
  * This program is free software; you can redistribute it and/or modify it
  * under the terms of version 2 of the GNU General Public License
@@ -29,15 +29,8 @@
 #include <asm/tlbflush.h>
 #include <asm/sn/arch.h>
 
-#define DEBUG   0
 
-#if DEBUG
-#define dprintk                 printk
-#else
-#define dprintk(x...)           do { } while (0)
-#endif
-
-void __init efi_memmap_walk_uc (efi_freemem_callback_t callback);
+extern void __init efi_memmap_walk_uc(efi_freemem_callback_t, void *);
 
 #define MAX_UNCACHED_GRANULES   5
 static int allocated_granules;
@@ -60,6 +53,7 @@ static void uncached_ipi_visibility(void *data)
 static void uncached_ipi_mc_drain(void *data)
 {
         int status;
+
         status = ia64_pal_mc_drain();
         if (status)
                 printk(KERN_WARNING "ia64_pal_mc_drain() failed with %i on "
@@ -67,30 +61,35 @@ static void uncached_ipi_mc_drain(void *data)
 }
 
 
-static unsigned long
-uncached_get_new_chunk(struct gen_pool *poolp)
+/*
+ * Add a new chunk of uncached memory pages to the specified pool.
+ *
+ * @pool: pool to add new chunk of uncached memory to
+ * @nid: node id of node to allocate memory from, or -1
+ *
+ * This is accomplished by first allocating a granule of cached memory pages
+ * and then converting them to uncached memory pages.
+ */
+static int uncached_add_chunk(struct gen_pool *pool, int nid)
 {
         struct page *page;
-        void *tmp;
         int status, i;
-        unsigned long addr, node;
+        unsigned long c_addr, uc_addr;
 
         if (allocated_granules >= MAX_UNCACHED_GRANULES)
-                return 0;
+                return -1;
+
+        /* attempt to allocate a granule's worth of cached memory pages */
 
-        node = poolp->private;
-        page = alloc_pages_node(node, GFP_KERNEL | __GFP_ZERO,
+        page = alloc_pages_node(nid, GFP_KERNEL | __GFP_ZERO,
                                 IA64_GRANULE_SHIFT-PAGE_SHIFT);
+        if (!page)
+                return -1;
 
-        dprintk(KERN_INFO "get_new_chunk page %p, addr %lx\n",
-                page, (unsigned long)(page-vmem_map) << PAGE_SHIFT);
+        /* convert the memory pages from cached to uncached */
 
-        /*
-         * Do magic if no mem on local node! XXX
-         */
-        if (!page)
-                return 0;
-        tmp = page_address(page);
+        c_addr = (unsigned long)page_address(page);
+        uc_addr = c_addr - PAGE_OFFSET + __IA64_UNCACHED_OFFSET;
 
         /*
          * There's a small race here where it's possible for someone to
@@ -100,76 +99,90 @@ uncached_get_new_chunk(struct gen_pool *poolp)
         for (i = 0; i < (IA64_GRANULE_SIZE / PAGE_SIZE); i++)
                 SetPageUncached(&page[i]);
 
-        flush_tlb_kernel_range(tmp, tmp + IA64_GRANULE_SIZE);
+        flush_tlb_kernel_range(uc_addr, uc_adddr + IA64_GRANULE_SIZE);
 
         status = ia64_pal_prefetch_visibility(PAL_VISIBILITY_PHYSICAL);
-
-        dprintk(KERN_INFO "pal_prefetch_visibility() returns %i on cpu %i\n",
-                status, raw_smp_processor_id());
-
         if (!status) {
                 status = smp_call_function(uncached_ipi_visibility, NULL, 0, 1);
                 if (status)
-                        printk(KERN_WARNING "smp_call_function failed for "
-                               "uncached_ipi_visibility! (%i)\n", status);
+                        goto failed;
         }
 
+        preempt_disable();
+
         if (ia64_platform_is("sn2"))
-                sn_flush_all_caches((unsigned long)tmp, IA64_GRANULE_SIZE);
+                sn_flush_all_caches(uc_addr, IA64_GRANULE_SIZE);
         else
-                flush_icache_range((unsigned long)tmp,
-                                   (unsigned long)tmp+IA64_GRANULE_SIZE);
+                flush_icache_range(uc_addr, uc_addr + IA64_GRANULE_SIZE);
+
+        /* flush the just introduced uncached translation from the TLB */
+        local_flush_tlb_all();
+
+        preempt_enable();
 
         ia64_pal_mc_drain();
         status = smp_call_function(uncached_ipi_mc_drain, NULL, 0, 1);
         if (status)
-                printk(KERN_WARNING "smp_call_function failed for "
-                       "uncached_ipi_mc_drain! (%i)\n", status);
+                goto failed;
 
-        addr = (unsigned long)tmp - PAGE_OFFSET + __IA64_UNCACHED_OFFSET;
+        /*
+         * The chunk of memory pages has been converted to uncached so now we
+         * can add it to the pool.
+         */
+        status = gen_pool_add(pool, uc_addr, IA64_GRANULE_SIZE, nid);
+        if (status)
+                goto failed;
 
         allocated_granules++;
-        return addr;
+        return 0;
+
+        /* failed to convert or add the chunk so give it back to the kernel */
+failed:
+        for (i = 0; i < (IA64_GRANULE_SIZE / PAGE_SIZE); i++)
+                ClearPageUncached(&page[i]);
+
+        free_pages(c_addr, IA64_GRANULE_SHIFT-PAGE_SHIFT);
+        return -1;
 }
 
 
 /*
  * uncached_alloc_page
  *
+ * @starting_nid: node id of node to start with, or -1
+ *
  * Allocate 1 uncached page. Allocates on the requested node. If no
  * uncached pages are available on the requested node, roundrobin starting
- * with higher nodes.
+ * with the next higher node.
  */
-unsigned long
-uncached_alloc_page(int nid)
+unsigned long uncached_alloc_page(int starting_nid)
 {
-        unsigned long maddr;
+        unsigned long uc_addr;
+        struct gen_pool *pool;
+        int nid;
 
-        maddr = gen_pool_alloc(uncached_pool[nid], PAGE_SIZE);
+        if (unlikely(starting_nid >= MAX_NUMNODES))
+                return 0;
 
-        dprintk(KERN_DEBUG "uncached_alloc_page returns %lx on node %i\n",
-                maddr, nid);
+        if (starting_nid < 0)
+                starting_nid = numa_node_id();
+        nid = starting_nid;
 
-        /*
-         * If no memory is availble on our local node, try the
-         * remaining nodes in the system.
-         */
-        if (!maddr) {
-                int i;
-
-                for (i = MAX_NUMNODES - 1; i >= 0; i--) {
-                        if (i == nid || !node_online(i))
-                                continue;
-                        maddr = gen_pool_alloc(uncached_pool[i], PAGE_SIZE);
-                        dprintk(KERN_DEBUG "uncached_alloc_page alternate search "
-                                "returns %lx on node %i\n", maddr, i);
-                        if (maddr) {
-                                break;
-                        }
-                }
-        }
+        do {
+                if (!node_online(nid))
+                        continue;
+                pool = uncached_pool[nid];
+                if (pool == NULL)
+                        continue;
+                do {
+                        uc_addr = gen_pool_alloc(pool, PAGE_SIZE);
+                        if (uc_addr != 0)
+                                return uc_addr;
+                } while (uncached_add_chunk(pool, nid) == 0);
+
+        } while ((nid = (nid + 1) % MAX_NUMNODES) != starting_nid);
 
-        return maddr;
+        return 0;
 }
 EXPORT_SYMBOL(uncached_alloc_page);
 
@@ -177,21 +190,22 @@ EXPORT_SYMBOL(uncached_alloc_page);
 /*
  * uncached_free_page
  *
+ * @uc_addr: uncached address of page to free
+ *
  * Free a single uncached page.
  */
-void
-uncached_free_page(unsigned long maddr)
+void uncached_free_page(unsigned long uc_addr)
 {
-        int node;
-
-        node = paddr_to_nid(maddr - __IA64_UNCACHED_OFFSET);
+        int nid = paddr_to_nid(uc_addr - __IA64_UNCACHED_OFFSET);
+        struct gen_pool *pool = uncached_pool[nid];
 
-        dprintk(KERN_DEBUG "uncached_free_page(%lx) on node %i\n", maddr, node);
+        if (unlikely(pool == NULL))
+                return;
 
-        if ((maddr & (0XFUL << 60)) != __IA64_UNCACHED_OFFSET)
-                panic("uncached_free_page invalid address %lx\n", maddr);
+        if ((uc_addr & (0XFUL << 60)) != __IA64_UNCACHED_OFFSET)
+                panic("uncached_free_page invalid address %lx\n", uc_addr);
 
-        gen_pool_free(uncached_pool[node], maddr, PAGE_SIZE);
+        gen_pool_free(pool, uc_addr, PAGE_SIZE);
 }
 EXPORT_SYMBOL(uncached_free_page);
 
@@ -199,43 +213,39 @@ EXPORT_SYMBOL(uncached_free_page);
 /*
  * uncached_build_memmap,
  *
+ * @uc_start: uncached starting address of a chunk of uncached memory
+ * @uc_end: uncached ending address of a chunk of uncached memory
+ * @arg: ignored, (NULL argument passed in on call to efi_memmap_walk_uc())
+ *
  * Called at boot time to build a map of pages that can be used for
  * memory special operations.
  */
-static int __init
-uncached_build_memmap(unsigned long start, unsigned long end, void *arg)
+static int __init uncached_build_memmap(unsigned long uc_start,
+                                        unsigned long uc_end, void *arg)
 {
-        long length = end - start;
-        int node;
-
-        dprintk(KERN_ERR "uncached_build_memmap(%lx %lx)\n", start, end);
+        int nid = paddr_to_nid(uc_start - __IA64_UNCACHED_OFFSET);
+        struct gen_pool *pool = uncached_pool[nid];
+        size_t size = uc_end - uc_start;
 
         touch_softlockup_watchdog();
-        memset((char *)start, 0, length);
 
-        node = paddr_to_nid(start - __IA64_UNCACHED_OFFSET);
-
-        for (; start < end ; start += PAGE_SIZE) {
-                dprintk(KERN_INFO "sticking %lx into the pool!\n", start);
-                gen_pool_free(uncached_pool[node], start, PAGE_SIZE);
+        if (pool != NULL) {
+                memset((char *)uc_start, 0, size);
+                (void) gen_pool_add(pool, uc_start, size, nid);
         }
-
         return 0;
 }
 
 
-static int __init uncached_init(void) {
-        int i;
+static int __init uncached_init(void)
+{
+        int nid;
 
-        for (i = 0; i < MAX_NUMNODES; i++) {
-                if (!node_online(i))
-                        continue;
-                uncached_pool[i] = gen_pool_create(0, IA64_GRANULE_SHIFT,
-                                                   &uncached_get_new_chunk, i);
+        for_each_online_node(nid) {
+                uncached_pool[nid] = gen_pool_create(PAGE_SHIFT, nid);
         }
 
-        efi_memmap_walk_uc(uncached_build_memmap);
-
+        efi_memmap_walk_uc(uncached_build_memmap, NULL);
         return 0;
 }