Merge bk://linux.bkbits.net/linux-2.5

into ozlabs.austin.ibm.com:/data/anton/for-linus-ppc64

arch/ppc64/kernel/idle.c

@@ -84,8 +84,6 @@ int cpu_idle(void)
 	lpaca = get_paca();
 
 	while (1) {
-		irq_stat[smp_processor_id()].idle_timestamp = jiffies;
-
 		if (lpaca->xLpPaca.xSharedProc) {
 			if (ItLpQueue_isLpIntPending(lpaca->lpQueuePtr))
 				process_iSeries_events();
@@ -125,7 +123,6 @@ int cpu_idle(void)
 	long oldval;
 
 	while (1) {
-		irq_stat[smp_processor_id()].idle_timestamp = jiffies;
 		oldval = test_and_clear_thread_flag(TIF_NEED_RESCHED);
 
 		if (!oldval) {

arch/ppc64/mm/numa.c

@@ -306,6 +306,7 @@ void __init paging_init(void)
 {
 	unsigned long zones_size[MAX_NR_ZONES];
 	int i, nid;
+	struct page *node_mem_map; 
 
 	for (i = 1; i < MAX_NR_ZONES; i++)
 		zones_size[i] = 0;
@@ -314,16 +315,24 @@ void __init paging_init(void)
 		unsigned long start_pfn;
 		unsigned long end_pfn;
 
-		if (node_data[nid].node_spanned_pages == 0)
-			continue;
-
 		start_pfn = plat_node_bdata[nid].node_boot_start >> PAGE_SHIFT;
 		end_pfn = plat_node_bdata[nid].node_low_pfn;
 
 		zones_size[ZONE_DMA] = end_pfn - start_pfn;
 		dbg("free_area_init node %d %lx %lx\n", nid,
 				zones_size[ZONE_DMA], start_pfn);
-		free_area_init_node(nid, NODE_DATA(nid), NULL, zones_size,
-				    start_pfn, NULL);
+
+		/* 
+		 * Give this empty node a dummy struct page to avoid
+		 * us from trying to allocate a node local mem_map
+		 * in free_area_init_node (which will fail).
+		 */
+		if (!node_data[nid].node_spanned_pages)
+			node_mem_map = alloc_bootmem(sizeof(struct page));
+		else
+			node_mem_map = NULL;
+
+		free_area_init_node(nid, NODE_DATA(nid), node_mem_map,
+				    zones_size, start_pfn, NULL);
 	}
 }

include/asm-ppc64/hardirq.h

@@ -15,9 +15,7 @@
 
 typedef struct {
 	unsigned int __softirq_pending;
-	unsigned int __syscall_count;
 	struct task_struct * __ksoftirqd_task;
-	unsigned long idle_timestamp;
 } ____cacheline_aligned irq_cpustat_t;
 
 #include <linux/irq_cpustat.h>	/* Standard mappings for irq_cpustat_t above */

include/asm-ppc64/siginfo.h

@@ -8,8 +8,8 @@
  * 2 of the License, or (at your option) any later version.
  */
 
-#define SI_PAD_SIZE    ((SI_MAX_SIZE/sizeof(int)) - 4)
-#define SI_PAD_SIZE32  ((SI_MAX_SIZE/sizeof(int)) - 3)
+#define __ARCH_SI_PREAMBLE_SIZE	(4 * sizeof(int))
+#define SI_PAD_SIZE32		((SI_MAX_SIZE/sizeof(int)) - 3)
 
 #include <asm-generic/siginfo.h>