[PARISC] Show more memory information and memory layout at bootup

Signed-off-by: Helge Deller <deller@gmx.de>
Signed-off-by: Kyle McMartin <kyle@parisc-linux.org>

1 files changed, 47 insertions, 1 deletions

diff --git a/arch/parisc/mm/init.c b/arch/parisc/mm/init.c
index 0667f2b4f977..d9e4ab545b38 100644
--- a/arch/parisc/mm/init.c
+++ b/arch/parisc/mm/init.c
@@ -24,6 +24,7 @@
 #include <linux/pagemap.h>      /* for release_pages and page_cache_release */
 
 #include <asm/pgalloc.h>
+#include <asm/pgtable.h>
 #include <asm/tlb.h>
 #include <asm/pdc_chassis.h>
 #include <asm/mmzone.h>
@@ -453,6 +454,9 @@ unsigned long pcxl_dma_start __read_mostly;
 
 void __init mem_init(void)
 {
+        int codesize, reservedpages, datasize, initsize;
+        int tmp;
+
         high_memory = __va((max_pfn << PAGE_SHIFT));
 
 #ifndef CONFIG_DISCONTIGMEM
@@ -466,8 +470,17 @@ void __init mem_init(void)
                         totalram_pages += free_all_bootmem_node(NODE_DATA(i));
         }
 #endif
+        codesize =  (unsigned long) &_etext - (unsigned long) &_text;
+        datasize =  (unsigned long) &_edata - (unsigned long) &_etext;
+        initsize =  (unsigned long) &__init_end - (unsigned long) &__init_begin;
 
-        printk(KERN_INFO "Memory: %luk available\n", num_physpages << (PAGE_SHIFT-10));
+        reservedpages = 0;
+        for (tmp = 0; tmp < max_low_pfn; tmp++)
+                /*
+                 * Only count reserved RAM pages
+                 */
+                if (PageReserved(pfn_to_page(tmp)))
+                        reservedpages++;
 
 #ifdef CONFIG_PA11
         if (hppa_dma_ops == &pcxl_dma_ops) {
@@ -481,6 +494,39 @@ void __init mem_init(void)
         vmalloc_start = SET_MAP_OFFSET(MAP_START);
 #endif
 
+        printk(KERN_INFO "Memory: %luk/%luk available (%dk kernel code, %dk reserved, %dk data, %dk init, %ldk highmem)\n",
+                (unsigned long) nr_free_pages() << (PAGE_SHIFT-10),
+                num_physpages << (PAGE_SHIFT-10),
+                codesize >> 10,
+                reservedpages << (PAGE_SHIFT-10),
+                datasize >> 10,
+                initsize >> 10,
+                (unsigned long) (totalhigh_pages << (PAGE_SHIFT-10))
+               );
+
+#ifdef CONFIG_DEBUG_KERNEL /* double-sanity-check paranoia */
+        printk("virtual kernel memory layout:\n"
+               "    vmalloc : 0x%p - 0x%p   (%4ld MB)\n"
+               "    lowmem  : 0x%p - 0x%p   (%4ld MB)\n"
+               "      .init : 0x%p - 0x%p   (%4ld kB)\n"
+               "      .data : 0x%p - 0x%p   (%4ld kB)\n"
+               "      .text : 0x%p - 0x%p   (%4ld kB)\n",
+
+               (void*)VMALLOC_START, (void*)VMALLOC_END,
+               (VMALLOC_END - VMALLOC_START) >> 20,
+
+               __va(0), high_memory,
+               ((unsigned long)high_memory - (unsigned long)__va(0)) >> 20,
+
+               &__init_begin, &__init_end,
+               ((unsigned long)&__init_end - (unsigned long)&__init_begin) >> 10,
+
+               &_etext, &_edata,
+               ((unsigned long)&_edata - (unsigned long)&_etext) >> 10,
+
+               &_text, &_etext,
+               ((unsigned long)&_etext - (unsigned long)&_text) >> 10);
+#endif
 }
 
 unsigned long *empty_zero_page __read_mostly;