sh: Use bootmem ontop of lmb for NUMA

Like the UP case, use lmb as the foundation of memory resource
management on NUMA.

Signed-off-by: Matt Fleming <matt@console-pimps.org>
Signed-off-by: Paul Mundt <lethal@linux-sh.org>

1 files changed, 23 insertions, 13 deletions

diff --git a/arch/sh/mm/numa.c b/arch/sh/mm/numa.c
index 095d93bec7c..9b784fdb947 100644
--- a/arch/sh/mm/numa.c
+++ b/arch/sh/mm/numa.c
@@ -9,6 +9,7 @@
  */
 #include <linux/module.h>
 #include <linux/bootmem.h>
+#include <linux/lmb.h>
 #include <linux/mm.h>
 #include <linux/numa.h>
 #include <linux/pfn.h>
@@ -26,6 +27,15 @@ EXPORT_SYMBOL_GPL(node_data);
 void __init setup_memory(void)
 {
         unsigned long free_pfn = PFN_UP(__pa(_end));
+        u64 base = min_low_pfn << PAGE_SHIFT;
+        u64 size = (max_low_pfn << PAGE_SHIFT) - min_low_pfn;
+
+        lmb_add(base, size);
+
+        /* Reserve the LMB regions used by the kernel, initrd, etc.. */
+        lmb_reserve(__MEMORY_START + CONFIG_ZERO_PAGE_OFFSET,
+                    (PFN_PHYS(free_pfn) + PAGE_SIZE - 1) -
+                    (__MEMORY_START + CONFIG_ZERO_PAGE_OFFSET));
 
         /*
          * Node 0 sets up its pgdat at the first available pfn,
@@ -45,24 +55,23 @@ void __init setup_memory(void)
 
 void __init setup_bootmem_node(int nid, unsigned long start, unsigned long end)
 {
-        unsigned long bootmap_pages, bootmap_start, bootmap_size;
-        unsigned long start_pfn, free_pfn, end_pfn;
+        unsigned long bootmap_pages;
+        unsigned long start_pfn, end_pfn;
+        unsigned long bootmem_paddr;
 
         /* Don't allow bogus node assignment */
         BUG_ON(nid > MAX_NUMNODES || nid == 0);
 
-        /*
-         * The free pfn starts at the beginning of the range, and is
-         * advanced as necessary for pgdat and node map allocations.
-         */
-        free_pfn = start_pfn = start >> PAGE_SHIFT;
+        start_pfn = start >> PAGE_SHIFT;
         end_pfn = end >> PAGE_SHIFT;
 
+        lmb_add(start, end - start);
+
         __add_active_range(nid, start_pfn, end_pfn);
 
         /* Node-local pgdat */
-        NODE_DATA(nid) = pfn_to_kaddr(free_pfn);
-        free_pfn += PFN_UP(sizeof(struct pglist_data));
+        NODE_DATA(nid) = __va(lmb_alloc_base(sizeof(struct pglist_data),
+                                             SMP_CACHE_BYTES, end_pfn));
         memset(NODE_DATA(nid), 0, sizeof(struct pglist_data));
 
         NODE_DATA(nid)->bdata = &bootmem_node_data[nid];
@@ -71,16 +80,17 @@ void __init setup_bootmem_node(int nid, unsigned long start, unsigned long end)
 
         /* Node-local bootmap */
         bootmap_pages = bootmem_bootmap_pages(end_pfn - start_pfn);
-        bootmap_start = (unsigned long)pfn_to_kaddr(free_pfn);
-        bootmap_size = init_bootmem_node(NODE_DATA(nid), free_pfn, start_pfn,
-                                    end_pfn);
+        bootmem_paddr = lmb_alloc_base(bootmap_pages << PAGE_SHIFT,
+                                       PAGE_SIZE, end_pfn);
+        init_bootmem_node(NODE_DATA(nid), bootmem_paddr >> PAGE_SHIFT,
+                          start_pfn, end_pfn);
 
         free_bootmem_with_active_regions(nid, end_pfn);
 
         /* Reserve the pgdat and bootmap space with the bootmem allocator */
         reserve_bootmem_node(NODE_DATA(nid), start_pfn << PAGE_SHIFT,
                              sizeof(struct pglist_data), BOOTMEM_DEFAULT);
-        reserve_bootmem_node(NODE_DATA(nid), free_pfn << PAGE_SHIFT,
+        reserve_bootmem_node(NODE_DATA(nid), bootmem_paddr,
                              bootmap_pages << PAGE_SHIFT, BOOTMEM_DEFAULT);
 
         /* It's up */