Merge 'Linux v3.0' into Litmus

Some notes:
* Litmus^RT scheduling class is the topmost scheduling class
  (above stop_sched_class).
* scheduler_ipi() function (e.g., in smp_reschedule_interrupt())
  may increase IPI latencies.
* Added path into schedule() to quickly re-evaluate scheduling
  decision without becoming preemptive again. This used to be
  a standard path before the removal of BKL.

Conflicts:
	Makefile
	arch/arm/kernel/calls.S
	arch/arm/kernel/smp.c
	arch/x86/include/asm/unistd_32.h
	arch/x86/kernel/smp.c
	arch/x86/kernel/syscall_table_32.S
	include/linux/hrtimer.h
	kernel/printk.c
	kernel/sched.c
	kernel/sched_fair.c

1 files changed, 11 insertions, 10 deletions

diff --git a/kernel/kexec.c b/kernel/kexec.c
index c0613f7d6730..8d814cbc8109 100644
--- a/kernel/kexec.c
+++ b/kernel/kexec.c
@@ -33,6 +33,7 @@
 #include <linux/vmalloc.h>
 #include <linux/swap.h>
 #include <linux/kmsg_dump.h>
+#include <linux/syscore_ops.h>
 
 #include <asm/page.h>
 #include <asm/uaccess.h>
@@ -144,7 +145,7 @@ static int do_kimage_alloc(struct kimage **rimage, unsigned long entry,
         /* Initialize the list of destination pages */
         INIT_LIST_HEAD(&image->dest_pages);
 
-        /* Initialize the list of unuseable pages */
+        /* Initialize the list of unusable pages */
         INIT_LIST_HEAD(&image->unuseable_pages);
 
         /* Read in the segments */
@@ -163,7 +164,7 @@ static int do_kimage_alloc(struct kimage **rimage, unsigned long entry,
          * just verifies it is an address we can use.
          *
          * Since the kernel does everything in page size chunks ensure
-         * the destination addreses are page aligned.  Too many
+         * the destination addresses are page aligned.  Too many
          * special cases crop of when we don't do this.  The most
          * insidious is getting overlapping destination addresses
          * simply because addresses are changed to page size
@@ -454,7 +455,7 @@ static struct page *kimage_alloc_normal_control_pages(struct kimage *image,
         /* Deal with the destination pages I have inadvertently allocated.
          *
          * Ideally I would convert multi-page allocations into single
-         * page allocations, and add everyting to image->dest_pages.
+         * page allocations, and add everything to image->dest_pages.
          *
          * For now it is simpler to just free the pages.
          */
@@ -602,7 +603,7 @@ static void kimage_free_extra_pages(struct kimage *image)
         /* Walk through and free any extra destination pages I may have */
         kimage_free_page_list(&image->dest_pages);
 
-        /* Walk through and free any unuseable pages I have cached */
+        /* Walk through and free any unusable pages I have cached */
         kimage_free_page_list(&image->unuseable_pages);
 
 }
@@ -816,7 +817,7 @@ static int kimage_load_normal_segment(struct kimage *image,
 
                 ptr = kmap(page);
                 /* Start with a clear page */
-                memset(ptr, 0, PAGE_SIZE);
+                clear_page(ptr);
                 ptr += maddr & ~PAGE_MASK;
                 mchunk = PAGE_SIZE - (maddr & ~PAGE_MASK);
                 if (mchunk > mbytes)
@@ -1099,7 +1100,8 @@ size_t crash_get_memory_size(void)
         return size;
 }
 
-static void free_reserved_phys_range(unsigned long begin, unsigned long end)
+void __weak crash_free_reserved_phys_range(unsigned long begin,
+                                           unsigned long end)
 {
         unsigned long addr;
 
@@ -1135,7 +1137,7 @@ int crash_shrink_memory(unsigned long new_size)
         start = roundup(start, PAGE_SIZE);
         end = roundup(start + new_size, PAGE_SIZE);
 
-        free_reserved_phys_range(end, crashk_res.end);
+        crash_free_reserved_phys_range(end, crashk_res.end);
 
         if ((start == end) && (crashk_res.parent != NULL))
                 release_resource(&crashk_res);
@@ -1529,8 +1531,7 @@ int kernel_kexec(void)
                 if (error)
                         goto Enable_cpus;
                 local_irq_disable();
-                /* Suspend system devices */
-                error = sysdev_suspend(PMSG_FREEZE);
+                error = syscore_suspend();
                 if (error)
                         goto Enable_irqs;
         } else
@@ -1545,7 +1546,7 @@ int kernel_kexec(void)
 
 #ifdef CONFIG_KEXEC_JUMP
         if (kexec_image->preserve_context) {
-                sysdev_resume();
+                syscore_resume();
  Enable_irqs:
                 local_irq_enable();
  Enable_cpus: