[SPARC64]: Fully use LMB information in bootmem_init().

Signed-off-by: David S. Miller <davem@davemloft.net>

1 files changed, 18 insertions, 82 deletions

diff --git a/arch/sparc64/mm/init.c b/arch/sparc64/mm/init.c
index 3e6c4ecb8fee..90e644a0e933 100644
--- a/arch/sparc64/mm/init.c
+++ b/arch/sparc64/mm/init.c
@@ -722,57 +722,12 @@ out:
 static unsigned long __init choose_bootmap_pfn(unsigned long start_pfn,
                                                unsigned long end_pfn)
 {
-        unsigned long avoid_start, avoid_end, bootmap_size;
-        int i;
+        unsigned long bootmap_size;
 
         bootmap_size = bootmem_bootmap_pages(end_pfn - start_pfn);
         bootmap_size <<= PAGE_SHIFT;
 
-        avoid_start = avoid_end = 0;
-#ifdef CONFIG_BLK_DEV_INITRD
-        avoid_start = initrd_start;
-        avoid_end = PAGE_ALIGN(initrd_end);
-#endif
-
-        for (i = 0; i < pavail_ents; i++) {
-                unsigned long start, end;
-
-                start = pavail[i].phys_addr;
-                end = start + pavail[i].reg_size;
-
-                while (start < end) {
-                        if (start >= kern_base &&
-                            start < PAGE_ALIGN(kern_base + kern_size)) {
-                                start = PAGE_ALIGN(kern_base + kern_size);
-                                continue;
-                        }
-                        if (start >= avoid_start && start < avoid_end) {
-                                start = avoid_end;
-                                continue;
-                        }
-
-                        if ((end - start) < bootmap_size)
-                                break;
-
-                        if (start < kern_base &&
-                            (start + bootmap_size) > kern_base) {
-                                start = PAGE_ALIGN(kern_base + kern_size);
-                                continue;
-                        }
-
-                        if (start < avoid_start &&
-                            (start + bootmap_size) > avoid_start) {
-                                start = avoid_end;
-                                continue;
-                        }
-
-                        /* OK, it doesn't overlap anything, use it.  */
-                        return start >> PAGE_SHIFT;
-                }
-        }
-
-        prom_printf("Cannot find free area for bootmap, aborting.\n");
-        prom_halt();
+        return lmb_alloc(bootmap_size, PAGE_SIZE) >> PAGE_SHIFT;
 }
 
 static void __init find_ramdisk(unsigned long phys_base)
@@ -825,8 +780,7 @@ static void __init find_ramdisk(unsigned long phys_base)
 static unsigned long __init bootmem_init(unsigned long *pages_avail,
                                          unsigned long phys_base)
 {
-        unsigned long bootmap_size, end_pfn;
-        unsigned long bootmap_pfn, size;
+        unsigned long end_pfn;
         int i;
 
         *pages_avail = lmb_phys_mem_size() >> PAGE_SHIFT;
@@ -836,49 +790,31 @@ static unsigned long __init bootmem_init(unsigned long *pages_avail,
         max_pfn = max_low_pfn = end_pfn;
         min_low_pfn = (phys_base >> PAGE_SHIFT);
 
-        bootmap_pfn = choose_bootmap_pfn(min_low_pfn, end_pfn);
-
-        bootmap_size = init_bootmem_node(NODE_DATA(0), bootmap_pfn,
-                                         min_low_pfn, end_pfn);
+        init_bootmem_node(NODE_DATA(0),
+                          choose_bootmap_pfn(min_low_pfn, end_pfn),
+                          min_low_pfn, end_pfn);
 
         /* Now register the available physical memory with the
          * allocator.
          */
-        for (i = 0; i < pavail_ents; i++)
-                free_bootmem(pavail[i].phys_addr, pavail[i].reg_size);
+        for (i = 0; i < lmb.memory.cnt; i++)
+                free_bootmem(lmb.memory.region[i].base,
+                             lmb_size_bytes(&lmb.memory, i));
 
-#ifdef CONFIG_BLK_DEV_INITRD
-        if (initrd_start) {
-                size = initrd_end - initrd_start;
-
-                /* Reserve the initrd image area. */
-                reserve_bootmem(initrd_start, size, BOOTMEM_DEFAULT);
+        for (i = 0; i < lmb.reserved.cnt; i++)
+                reserve_bootmem(lmb.reserved.region[i].base,
+                                lmb_size_bytes(&lmb.reserved, i),
+                                BOOTMEM_DEFAULT);
 
-                initrd_start += PAGE_OFFSET;
-                initrd_end += PAGE_OFFSET;
-        }
-#endif
-        /* Reserve the kernel text/data/bss. */
-        reserve_bootmem(kern_base, kern_size, BOOTMEM_DEFAULT);
         *pages_avail -= PAGE_ALIGN(kern_size) >> PAGE_SHIFT;
 
-        /* Add back in the initmem pages. */
-        size = ((unsigned long)(__init_end) & PAGE_MASK) -
-                PAGE_ALIGN((unsigned long)__init_begin);
-        *pages_avail += size >> PAGE_SHIFT;
+        for (i = 0; i < lmb.memory.cnt; ++i) {
+                unsigned long start_pfn, end_pfn, pages;
 
-        /* Reserve the bootmem map.   We do not account for it
-         * in pages_avail because we will release that memory
-         * in free_all_bootmem.
-         */
-        size = bootmap_size;
-        reserve_bootmem((bootmap_pfn << PAGE_SHIFT), size, BOOTMEM_DEFAULT);
-
-        for (i = 0; i < pavail_ents; i++) {
-                unsigned long start_pfn, end_pfn;
+                pages = lmb_size_pages(&lmb.memory, i);
+                start_pfn = lmb.memory.region[i].base >> PAGE_SHIFT;
+                end_pfn = start_pfn + pages;
 
-                start_pfn = pavail[i].phys_addr >> PAGE_SHIFT;
-                end_pfn = (start_pfn + (pavail[i].reg_size >> PAGE_SHIFT));
                 memory_present(0, start_pfn, end_pfn);
         }