Merge tiger.hpl.hp.com:/data1/bk/vanilla/linux-2.5

into tiger.hpl.hp.com:/data1/bk/lia64/to-linus-2.5

arch/ia64/ia32/sys_ia32.c

@@ -2724,8 +2724,8 @@ sys32_open (const char * filename, int flags, int mode)
 struct epoll_event32
 {
 	u32 events;
-	u64 data;
-} __attribute__((packed));
+	u32 data[2];
+}; 
 
 asmlinkage long
 sys32_epoll_ctl(int epfd, int op, int fd, struct epoll_event32 *event)
@@ -2740,10 +2740,10 @@ sys32_epoll_ctl(int epfd, int op, int fd, struct epoll_event32 *event)
 		return error;
 
 	__get_user(event64.events, &event->events);
-	__get_user(data_halfword, (u32*)(&event->data));
+	__get_user(data_halfword, &event->data[0]);
 	event64.data = data_halfword;
-	__get_user(data_halfword, ((u32*)(&event->data) + 1));
- 	event64.data |= ((u64)data_halfword) << 32;
+	__get_user(data_halfword, &event->data[1]);
+ 	event64.data |= (u64)data_halfword << 32;
 
 	set_fs(KERNEL_DS);
 	error = sys_epoll_ctl(epfd, op, fd, &event64);
@@ -2758,8 +2758,9 @@ sys32_epoll_wait(int epfd, struct epoll_event32 *events, int maxevents,
 {
 	struct epoll_event *events64 = NULL;
 	mm_segment_t old_fs = get_fs();
-	int error;
+	int error, numevents, size;
 	int evt_idx;
+	int do_free_pages = 0;
 
 	if (maxevents <= 0) {
 		return -EINVAL;
@@ -2770,43 +2771,44 @@ sys32_epoll_wait(int epfd, struct epoll_event32 *events, int maxevents,
 				 maxevents * sizeof(struct epoll_event32))))
 		return error;
 
-	/* Allocate the space needed for the intermediate copy */
-	events64 = kmalloc(maxevents * sizeof(struct epoll_event), GFP_KERNEL);
+	/* 
+ 	 * Allocate space for the intermediate copy.  If the space needed 
+	 * is large enough to cause kmalloc to fail, then try again with
+	 * __get_free_pages.
+	 */
+	size = maxevents * sizeof(struct epoll_event);
+	events64 = kmalloc(size, GFP_KERNEL);
 	if (events64 == NULL) {
+		events64 = __get_free_pages(GFP_KERNEL, get_order(size));
+		if (events64 == NULL) 
 			return -ENOMEM;
-	}
-
-	/* Expand the 32-bit structures into the 64-bit structures */
-	for (evt_idx = 0; evt_idx < maxevents; evt_idx++) {
-		u32 data_halfword;
-		__get_user(events64[evt_idx].events, &events[evt_idx].events);
-		__get_user(data_halfword, (u32*)(&events[evt_idx].data));
-		events64[evt_idx].data = data_halfword;
-		__get_user(data_halfword, ((u32*)(&events[evt_idx].data) + 1));
-		events64[evt_idx].data |= ((u64)data_halfword) << 32;
+		do_free_pages = 1;
 	}
 
 	/* Do the system call */
 	set_fs(KERNEL_DS); /* copy_to/from_user should work on kernel mem*/
-	error = sys_epoll_wait(epfd, events64, maxevents, timeout);
+	numevents = sys_epoll_wait(epfd, events64, maxevents, timeout);
 	set_fs(old_fs);
 
 	/* Don't modify userspace memory if we're returning an error */
-	if (!error) {
+	if (numevents > 0) {
 		/* Translate the 64-bit structures back into the 32-bit
 		   structures */
-		for (evt_idx = 0; evt_idx < maxevents; evt_idx++) {
+		for (evt_idx = 0; evt_idx < numevents; evt_idx++) {
 			__put_user(events64[evt_idx].events,
 				   &events[evt_idx].events);
-			__put_user((u32)(events64[evt_idx].data),
-				   (u32*)(&events[evt_idx].data));
+			__put_user((u32)events64[evt_idx].data,
+				   &events[evt_idx].data[0]);
 			__put_user((u32)(events64[evt_idx].data >> 32),
-				   ((u32*)(&events[evt_idx].data) + 1));
+				   &events[evt_idx].data[1]);
 		}
 	}
 
+	if (do_free_pages)
+		free_pages(events64, get_order(size));
+	else
 		kfree(events64);
-	return error;
+	return numevents;
 }
 
 #ifdef	NOTYET  /* UNTESTED FOR IA64 FROM HERE DOWN */

arch/ia64/kernel/acpi.c

@@ -454,6 +454,12 @@ acpi_numa_arch_fixup (void)
 {
 	int i, j, node_from, node_to;
 
+	/* If there's no SRAT, fix the phys_id */
+	if (srat_num_cpus == 0) {
+		node_cpuid[0].phys_id = hard_smp_processor_id();
+		return;
+	}
+
 	/* calculate total number of nodes in system from PXM bitmap */
 	numnodes = 0;		/* init total nodes in system */
 
@@ -614,6 +620,12 @@ acpi_boot_init (void)
 
 	smp_build_cpu_map();
 # ifdef CONFIG_NUMA
+	if (srat_num_cpus == 0) {
+		int cpu, i = 1;
+		for (cpu = 0; cpu < smp_boot_data.cpu_count; cpu++)
+			if (smp_boot_data.cpu_phys_id[cpu] != hard_smp_processor_id())
+				node_cpuid[i++].phys_id = smp_boot_data.cpu_phys_id[cpu];
+	}
 	build_cpu_to_node_map();
 # endif
 #endif

arch/ia64/mm/hugetlbpage.c

@@ -24,9 +24,42 @@ static long    htlbpagemem;
 int		htlbpage_max;
 static long	htlbzone_pages;
 
-static LIST_HEAD(htlbpage_freelist);
+static struct list_head hugepage_freelists[MAX_NUMNODES];
 static spinlock_t htlbpage_lock = SPIN_LOCK_UNLOCKED;
 
+static void enqueue_huge_page(struct page *page)
+{
+	list_add(&page->list,
+		&hugepage_freelists[page_zone(page)->zone_pgdat->node_id]);
+}
+
+static struct page *dequeue_huge_page(void)
+{
+	int nid = numa_node_id();
+	struct page *page = NULL;
+
+	if (list_empty(&hugepage_freelists[nid])) {
+		for (nid = 0; nid < MAX_NUMNODES; ++nid)
+			if (!list_empty(&hugepage_freelists[nid]))
+				break;
+	}
+	if (nid >= 0 && nid < MAX_NUMNODES &&
+	    !list_empty(&hugepage_freelists[nid])) {
+		page = list_entry(hugepage_freelists[nid].next, struct page, list);
+		list_del(&page->list);
+	}
+	return page;
+}
+
+static struct page *alloc_fresh_huge_page(void)
+{
+	static int nid = 0;
+	struct page *page;
+	page = alloc_pages_node(nid, GFP_HIGHUSER, HUGETLB_PAGE_ORDER);
+	nid = (nid + 1) % numnodes;
+	return page;
+}
+
 void free_huge_page(struct page *page);
 
 static struct page *alloc_hugetlb_page(void)
@@ -35,13 +68,11 @@ static struct page *alloc_hugetlb_page(void)
 	struct page *page;
 
 	spin_lock(&htlbpage_lock);
-	if (list_empty(&htlbpage_freelist)) {
+	page = dequeue_huge_page();
+	if (!page) {
 		spin_unlock(&htlbpage_lock);
 		return NULL;
 	}
-
-	page = list_entry(htlbpage_freelist.next, struct page, list);
-	list_del(&page->list);
 	htlbpagemem--;
 	spin_unlock(&htlbpage_lock);
 	set_page_count(page, 1);
@@ -228,7 +259,7 @@ void free_huge_page(struct page *page)
 	INIT_LIST_HEAD(&page->list);
 
 	spin_lock(&htlbpage_lock);
-	list_add(&page->list, &htlbpage_freelist);
+	enqueue_huge_page(page);
 	htlbpagemem++;
 	spin_unlock(&htlbpage_lock);
 }
@@ -371,7 +402,7 @@ int try_to_free_low(int count)
 
 	map = NULL;
 	spin_lock(&htlbpage_lock);
-	list_for_each(p, &htlbpage_freelist) {
+	list_for_each(p, &hugepage_freelists[0]) {
 		if (map) {
 			list_del(&map->list);
 			update_and_free_page(map);
@@ -408,11 +439,11 @@ int set_hugetlb_mem_size(int count)
 		return (int)htlbzone_pages;
 	if (lcount > 0) {	/* Increase the mem size. */
 		while (lcount--) {
-			page = alloc_pages(__GFP_HIGHMEM, HUGETLB_PAGE_ORDER);
+			page = alloc_fresh_huge_page();
 			if (page == NULL)
 				break;
 			spin_lock(&htlbpage_lock);
-			list_add(&page->list, &htlbpage_freelist);
+			enqueue_huge_page(page);
 			htlbpagemem++;
 			htlbzone_pages++;
 			spin_unlock(&htlbpage_lock);
@@ -449,17 +480,18 @@ __setup("hugepages=", hugetlb_setup);
 
 static int __init hugetlb_init(void)
 {
-	int i, j;
+	int i;
 	struct page *page;
 
+	for (i = 0; i < MAX_NUMNODES; ++i)
+		INIT_LIST_HEAD(&hugepage_freelists[i]);
+
 	for (i = 0; i < htlbpage_max; ++i) {
-		page = alloc_pages(__GFP_HIGHMEM, HUGETLB_PAGE_ORDER);
+		page = alloc_fresh_huge_page();
 		if (!page)
 			break;
-		for (j = 0; j < HPAGE_SIZE/PAGE_SIZE; ++j)
-			SetPageReserved(&page[j]);
 		spin_lock(&htlbpage_lock);
-		list_add(&page->list, &htlbpage_freelist);
+		enqueue_huge_page(page);
 		spin_unlock(&htlbpage_lock);
 	}
 	htlbpage_max = htlbpagemem = htlbzone_pages = i;

arch/ia64/sn/io/machvec/pci_bus_cvlink.c

@@ -867,6 +867,9 @@ sn_pci_init (void)
 	int i = 0;
 	struct pci_controller *controller;
 
+	if (!ia64_platform_is("sn2"))
+	    return 0;
+
 	/*
 	 * set pci_raw_ops, etc.
 	 */

arch/ia64/sn/kernel/setup.c

@@ -147,7 +147,6 @@ char drive_info[4*16];
  * Sets up an initial console to aid debugging.  Intended primarily
  * for bringup.  See start_kernel() in init/main.c.
  */
-#if defined(CONFIG_IA64_EARLY_PRINTK_SGI_SN) || defined(CONFIG_IA64_SGI_SN_SIM)
 
 void __init
 early_sn_setup(void)
@@ -189,7 +188,6 @@ early_sn_setup(void)
 		printk(KERN_DEBUG "early_sn_setup: setting master_node_bedrock_address to 0x%lx\n", master_node_bedrock_address);
 	}
 }
-#endif /* CONFIG_IA64_EARLY_PRINTK_SGI_SN */
 
 #ifdef CONFIG_IA64_MCA
 extern int platform_intr_list[];

include/asm-ia64/sn/nodepda.h

@@ -128,7 +128,7 @@ typedef struct irqpda_s irqpda_t;
  * Check if given a compact node id the corresponding node has all the
  * cpus disabled. 
  */
-#define is_headless_node(cnode)		(!any_online_cpu(node_to_cpumask(cnode)))
+#define is_headless_node(cnode)		(!node_to_cpu_mask[cnode])
 
 /*
  * Check if given a node vertex handle the corresponding node has all the