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@@ -50,17 +50,11 @@ early_param("bootmem_debug", bootmem_debug_setup);
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__FUNCTION__, ## args); \
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})
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-/*
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- * Given an initialised bdata, it returns the size of the boot bitmap
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- */
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-static unsigned long __init get_mapsize(bootmem_data_t *bdata)
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+static unsigned long __init bootmap_bytes(unsigned long pages)
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{
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- unsigned long mapsize;
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- unsigned long start = PFN_DOWN(bdata->node_boot_start);
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- unsigned long end = bdata->node_low_pfn;
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+ unsigned long bytes = (pages + 7) / 8;
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- mapsize = ((end - start) + 7) / 8;
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- return ALIGN(mapsize, sizeof(long));
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+ return ALIGN(bytes, sizeof(long));
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}
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/**
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@@ -69,13 +63,9 @@ static unsigned long __init get_mapsize(bootmem_data_t *bdata)
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*/
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unsigned long __init bootmem_bootmap_pages(unsigned long pages)
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{
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- unsigned long mapsize;
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-
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- mapsize = (pages+7)/8;
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- mapsize = (mapsize + ~PAGE_MASK) & PAGE_MASK;
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- mapsize >>= PAGE_SHIFT;
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+ unsigned long bytes = bootmap_bytes(pages);
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- return mapsize;
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+ return PAGE_ALIGN(bytes) >> PAGE_SHIFT;
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}
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/*
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@@ -117,7 +107,7 @@ static unsigned long __init init_bootmem_core(bootmem_data_t *bdata,
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* Initially all pages are reserved - setup_arch() has to
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* register free RAM areas explicitly.
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*/
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- mapsize = get_mapsize(bdata);
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+ mapsize = bootmap_bytes(end - start);
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memset(bdata->node_bootmem_map, 0xff, mapsize);
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bdebug("nid=%td start=%lx map=%lx end=%lx mapsize=%lx\n",
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@@ -160,7 +150,7 @@ static unsigned long __init free_all_bootmem_core(bootmem_data_t *bdata)
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struct page *page;
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unsigned long pfn;
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unsigned long i, count;
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- unsigned long idx;
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+ unsigned long idx, pages;
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unsigned long *map;
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int gofast = 0;
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@@ -211,7 +201,8 @@ static unsigned long __init free_all_bootmem_core(bootmem_data_t *bdata)
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* needed anymore:
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*/
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page = virt_to_page(bdata->node_bootmem_map);
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- idx = (get_mapsize(bdata) + PAGE_SIZE-1) >> PAGE_SHIFT;
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+ pages = bdata->node_low_pfn - PFN_DOWN(bdata->node_boot_start);
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+ idx = bootmem_bootmap_pages(pages);
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for (i = 0; i < idx; i++, page++)
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__free_pages_bootmem(page, 0);
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count += i;
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