[S390] Have s390 use add_active_range() and free_area_init_nodes.
Heiko Carstens [Wed, 4 Oct 2006 18:02:19 +0000 (20:02 +0200)]
Size zones and holes in an architecture independent manner for s390.

Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com>

arch/s390/Kconfig
arch/s390/defconfig
arch/s390/kernel/setup.c
arch/s390/mm/init.c

index f900a51..51c2dfe 100644 (file)
@@ -233,6 +233,9 @@ config WARN_STACK_SIZE
          This allows you to specify the maximum frame size a function may
          have without the compiler complaining about it.
 
+config ARCH_POPULATES_NODE_MAP
+       def_bool y
+
 source "mm/Kconfig"
 
 comment "I/O subsystem configuration"
index 62950f5..b6cad75 100644 (file)
@@ -118,6 +118,7 @@ CONFIG_PACK_STACK=y
 CONFIG_CHECK_STACK=y
 CONFIG_STACK_GUARD=256
 # CONFIG_WARN_STACK is not set
+CONFIG_ARCH_POPULATES_NODE_MAP=y
 CONFIG_SELECT_MEMORY_MODEL=y
 CONFIG_FLATMEM_MANUAL=y
 # CONFIG_DISCONTIGMEM_MANUAL is not set
index a21cfbb..49f2b68 100644 (file)
@@ -70,7 +70,6 @@ struct {
 #define CHUNK_READ_WRITE 0
 #define CHUNK_READ_ONLY 1
 volatile int __cpu_logical_map[NR_CPUS]; /* logical cpu to cpu address */
-unsigned long __initdata zholes_size[MAX_NR_ZONES];
 static unsigned long __initdata memory_end;
 
 /*
@@ -358,21 +357,6 @@ void machine_power_off(void)
  */
 void (*pm_power_off)(void) = machine_power_off;
 
-static void __init
-add_memory_hole(unsigned long start, unsigned long end)
-{
-       unsigned long dma_pfn = MAX_DMA_ADDRESS >> PAGE_SHIFT;
-
-       if (end <= dma_pfn)
-               zholes_size[ZONE_DMA] += end - start + 1;
-       else if (start > dma_pfn)
-               zholes_size[ZONE_NORMAL] += end - start + 1;
-       else {
-               zholes_size[ZONE_DMA] += dma_pfn - start + 1;
-               zholes_size[ZONE_NORMAL] += end - dma_pfn;
-       }
-}
-
 static int __init early_parse_mem(char *p)
 {
        memory_end = memparse(p, &p);
@@ -494,7 +478,6 @@ setup_memory(void)
 {
         unsigned long bootmap_size;
        unsigned long start_pfn, end_pfn, init_pfn;
-       unsigned long last_rw_end;
        int i;
 
        /*
@@ -543,46 +526,34 @@ setup_memory(void)
 #endif
 
        /*
-        * Initialize the boot-time allocator (with low memory only):
+        * Initialize the boot-time allocator
         */
        bootmap_size = init_bootmem(start_pfn, end_pfn);
 
        /*
         * Register RAM areas with the bootmem allocator.
         */
-       last_rw_end = start_pfn;
 
        for (i = 0; i < MEMORY_CHUNKS && memory_chunk[i].size > 0; i++) {
-               unsigned long start_chunk, end_chunk;
+               unsigned long start_chunk, end_chunk, pfn;
 
                if (memory_chunk[i].type != CHUNK_READ_WRITE)
                        continue;
-               start_chunk = (memory_chunk[i].addr + PAGE_SIZE - 1);
-               start_chunk >>= PAGE_SHIFT;
-               end_chunk = (memory_chunk[i].addr + memory_chunk[i].size);
-               end_chunk >>= PAGE_SHIFT;
-               if (start_chunk < start_pfn)
-                       start_chunk = start_pfn;
-               if (end_chunk > end_pfn)
-                       end_chunk = end_pfn;
-               if (start_chunk < end_chunk) {
-                       /* Initialize storage key for RAM pages */
-                       for (init_pfn = start_chunk ; init_pfn < end_chunk;
-                            init_pfn++)
-                               page_set_storage_key(init_pfn << PAGE_SHIFT,
-                                                    PAGE_DEFAULT_KEY);
-                       free_bootmem(start_chunk << PAGE_SHIFT,
-                                    (end_chunk - start_chunk) << PAGE_SHIFT);
-                       if (last_rw_end < start_chunk)
-                               add_memory_hole(last_rw_end, start_chunk - 1);
-                       last_rw_end = end_chunk;
-               }
+               start_chunk = PFN_DOWN(memory_chunk[i].addr);
+               end_chunk = start_chunk + PFN_DOWN(memory_chunk[i].size) - 1;
+               end_chunk = min(end_chunk, end_pfn);
+               if (start_chunk >= end_chunk)
+                       continue;
+               add_active_range(0, start_chunk, end_chunk);
+               pfn = max(start_chunk, start_pfn);
+               for (; pfn <= end_chunk; pfn++)
+                       page_set_storage_key(PFN_PHYS(pfn), PAGE_DEFAULT_KEY);
        }
 
        psw_set_key(PAGE_DEFAULT_KEY);
 
-       if (last_rw_end < end_pfn - 1)
-               add_memory_hole(last_rw_end, end_pfn - 1);
+       free_bootmem_with_active_regions(0, max_pfn);
+       reserve_bootmem(0, PFN_PHYS(start_pfn));
 
        /*
         * Reserve the bootmem bitmap itself as well. We do this in two
index 127044e..c302508 100644 (file)
@@ -82,7 +82,6 @@ void show_mem(void)
         printk("%d pages swap cached\n",cached);
 }
 
-extern unsigned long __initdata zholes_size[];
 /*
  * paging_init() sets up the page tables
  */
@@ -99,16 +98,15 @@ void __init paging_init(void)
         unsigned long pgdir_k = (__pa(swapper_pg_dir) & PAGE_MASK) | _KERNSEG_TABLE;
         static const int ssm_mask = 0x04000000L;
        unsigned long ro_start_pfn, ro_end_pfn;
-       unsigned long zones_size[MAX_NR_ZONES];
+       unsigned long max_zone_pfns[MAX_NR_ZONES];
 
        ro_start_pfn = PFN_DOWN((unsigned long)&__start_rodata);
        ro_end_pfn = PFN_UP((unsigned long)&__end_rodata);
 
-       memset(zones_size, 0, sizeof(zones_size));
-       zones_size[ZONE_DMA] = max_low_pfn;
-       free_area_init_node(0, &contig_page_data, zones_size,
-                           __pa(PAGE_OFFSET) >> PAGE_SHIFT,
-                           zholes_size);
+       memset(max_zone_pfns, 0, sizeof(max_zone_pfns));
+       max_zone_pfns[ZONE_DMA] = max_low_pfn;
+       max_zone_pfns[ZONE_NORMAL] = max_low_pfn;
+       free_area_init_nodes(max_zone_pfns);
 
        /* unmap whole virtual address space */
        
@@ -153,7 +151,6 @@ void __init paging_init(void)
        __raw_local_irq_ssm(ssm_mask);
 
         local_flush_tlb();
-        return;
 }
 
 #else /* CONFIG_64BIT */
@@ -169,26 +166,16 @@ void __init paging_init(void)
         unsigned long pgdir_k = (__pa(swapper_pg_dir) & PAGE_MASK) |
           _KERN_REGION_TABLE;
        static const int ssm_mask = 0x04000000L;
-       unsigned long zones_size[MAX_NR_ZONES];
-       unsigned long dma_pfn, high_pfn;
        unsigned long ro_start_pfn, ro_end_pfn;
+       unsigned long max_zone_pfns[MAX_NR_ZONES];
 
-       memset(zones_size, 0, sizeof(zones_size));
-       dma_pfn = MAX_DMA_ADDRESS >> PAGE_SHIFT;
-       high_pfn = max_low_pfn;
        ro_start_pfn = PFN_DOWN((unsigned long)&__start_rodata);
        ro_end_pfn = PFN_UP((unsigned long)&__end_rodata);
 
-       if (dma_pfn > high_pfn)
-               zones_size[ZONE_DMA] = high_pfn;
-       else {
-               zones_size[ZONE_DMA] = dma_pfn;
-               zones_size[ZONE_NORMAL] = high_pfn - dma_pfn;
-       }
-
-       /* Initialize mem_map[].  */
-       free_area_init_node(0, &contig_page_data, zones_size,
-                           __pa(PAGE_OFFSET) >> PAGE_SHIFT, zholes_size);
+       memset(max_zone_pfns, 0, sizeof(max_zone_pfns));
+       max_zone_pfns[ZONE_DMA] = PFN_DOWN(MAX_DMA_ADDRESS);
+       max_zone_pfns[ZONE_NORMAL] = max_low_pfn;
+       free_area_init_nodes(max_zone_pfns);
 
        /*
         * map whole physical memory to virtual memory (identity mapping) 
@@ -237,8 +224,6 @@ void __init paging_init(void)
        __raw_local_irq_ssm(ssm_mask);
 
         local_flush_tlb();
-
-        return;
 }
 #endif /* CONFIG_64BIT */