x86: introduce reserve_initrd

Signed-off-by: Yinghai Lu <yhlu.kernel@gmail.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>

diff --git a/arch/x86/kernel/setup_32.c b/arch/x86/kernel/setup_32.c
index 190546b..90b5104 100644 (file)
--- a/arch/x86/kernel/setup_32.c
+++ b/arch/x86/kernel/setup_32.c
@@ -336,7 +336,7 @@ void __init reserve_initrd(void)
                 * in i386_start_kernel
                 */
                initrd_start = ramdisk_image + PAGE_OFFSET;
-               initrd_end = initrd_start+ramdisk_size;
+               initrd_end = initrd_start + ramdisk_size;
                return;
        }
 
@@ -363,7 +363,7 @@ void __init reserve_initrd(void)
 
 #define MAX_MAP_CHUNK  (NR_FIX_BTMAPS << PAGE_SHIFT)
 
-static void __init relocate_initrd(void)
+static void __init post_reserve_initrd(void)
 {
        u64 ramdisk_image = boot_params.hdr.ramdisk_image;
        u64 ramdisk_size  = boot_params.hdr.ramdisk_size;
@@ -417,7 +417,13 @@ static void __init relocate_initrd(void)
        /* need to free that, otherwise init highmem will reserve it again */
        free_early(ramdisk_image, ramdisk_image+ramdisk_size);
 }
-
+#else
+void __init reserve_initrd(void)
+{
+}
+static void __init post_reserve_initrd(void)
+{
+}
 #endif /* CONFIG_BLK_DEV_INITRD */
 
 /*
@@ -632,9 +638,7 @@ void __init setup_arch(char **cmdline_p)
         * NOTE: at this point the bootmem allocator is fully available.
         */
 
-#ifdef CONFIG_BLK_DEV_INITRD
-       relocate_initrd();
-#endif
+       post_reserve_initrd();
 
        remapped_pgdat_init();
        sparse_init();

diff --git a/arch/x86/mm/init_32.c b/arch/x86/mm/init_32.c
index 9bc8607..9808078 100644 (file)
--- a/arch/x86/mm/init_32.c
+++ b/arch/x86/mm/init_32.c
@@ -597,8 +597,6 @@ void __init zone_sizes_init(void)
 }
 #endif /* !CONFIG_NEED_MULTIPLE_NODES */
 
-extern void reserve_initrd(void);
-
 void __init setup_bootmem_allocator(void)
 {
        int i;
@@ -613,9 +611,9 @@ void __init setup_bootmem_allocator(void)
        if (bootmap == -1L)
                panic("Cannot find bootmem map of size %ld\n", bootmap_size);
        reserve_early(bootmap, bootmap + bootmap_size, "BOOTMAP");
-#ifdef CONFIG_BLK_DEV_INITRD
+
        reserve_initrd();
-#endif
+
        bootmap_size = init_bootmem(bootmap >> PAGE_SHIFT, max_low_pfn);
        printk(KERN_INFO "  mapped low ram: 0 - %08lx\n",
                 max_pfn_mapped<<PAGE_SHIFT);

diff --git a/include/asm-x86/setup.h b/include/asm-x86/setup.h
index bb12a16..8f85b24 100644 (file)
--- a/include/asm-x86/setup.h
+++ b/include/asm-x86/setup.h
@@ -39,6 +39,8 @@ void reserve_crashkernel(void);
 #include <asm/bootparam.h>
 
 void reserve_standard_io_resources(void);
+void reserve_initrd(void);
+
 
 #ifndef _SETUP