diff options
| -rw-r--r-- | arch/sparc64/mm/init.c | 132 |
1 files changed, 6 insertions, 126 deletions
diff --git a/arch/sparc64/mm/init.c b/arch/sparc64/mm/init.c index 6eb76243fa9..3e6c4ecb8fe 100644 --- a/arch/sparc64/mm/init.c +++ b/arch/sparc64/mm/init.c @@ -775,115 +775,6 @@ static unsigned long __init choose_bootmap_pfn(unsigned long start_pfn, prom_halt(); } -static void __init trim_pavail(unsigned long *cur_size_p, - unsigned long *end_of_phys_p) -{ - unsigned long to_trim = *cur_size_p - cmdline_memory_size; - unsigned long avoid_start, avoid_end; - int i; - - to_trim = PAGE_ALIGN(to_trim); - - avoid_start = avoid_end = 0; -#ifdef CONFIG_BLK_DEV_INITRD - avoid_start = initrd_start; - avoid_end = PAGE_ALIGN(initrd_end); -#endif - - /* Trim some pavail[] entries in order to satisfy the - * requested "mem=xxx" kernel command line specification. - * - * We must not trim off the kernel image area nor the - * initial ramdisk range (if any). Also, we must not trim - * any pavail[] entry down to zero in order to preserve - * the invariant that all pavail[] entries have a non-zero - * size which is assumed by all of the code in here. - */ - for (i = 0; i < pavail_ents; i++) { - unsigned long start, end, kern_end; - unsigned long trim_low, trim_high, n; - - kern_end = PAGE_ALIGN(kern_base + kern_size); - - trim_low = start = pavail[i].phys_addr; - trim_high = end = start + pavail[i].reg_size; - - if (kern_base >= start && - kern_base < end) { - trim_low = kern_base; - if (kern_end >= end) - continue; - } - if (kern_end >= start && - kern_end < end) { - trim_high = kern_end; - } - if (avoid_start && - avoid_start >= start && - avoid_start < end) { - if (trim_low > avoid_start) - trim_low = avoid_start; - if (avoid_end >= end) - continue; - } - if (avoid_end && - avoid_end >= start && - avoid_end < end) { - if (trim_high < avoid_end) - trim_high = avoid_end; - } - - if (trim_high <= trim_low) - continue; - - if (trim_low == start && trim_high == end) { - /* Whole chunk is available for trimming. - * Trim all except one page, in order to keep - * entry non-empty. - */ - n = (end - start) - PAGE_SIZE; - if (n > to_trim) - n = to_trim; - - if (n) { - pavail[i].phys_addr += n; - pavail[i].reg_size -= n; - to_trim -= n; - } - } else { - n = (trim_low - start); - if (n > to_trim) - n = to_trim; - - if (n) { - pavail[i].phys_addr += n; - pavail[i].reg_size -= n; - to_trim -= n; - } - if (to_trim) { - n = end - trim_high; - if (n > to_trim) - n = to_trim; - if (n) { - pavail[i].reg_size -= n; - to_trim -= n; - } - } - } - - if (!to_trim) - break; - } - - /* Recalculate. */ - *cur_size_p = 0UL; - for (i = 0; i < pavail_ents; i++) { - *end_of_phys_p = pavail[i].phys_addr + - pavail[i].reg_size; - *cur_size_p += pavail[i].reg_size; - } -} - static void __init find_ramdisk(unsigned long phys_base) { #ifdef CONFIG_BLK_DEV_INITRD @@ -935,25 +826,11 @@ static unsigned long __init bootmem_init(unsigned long *pages_avail, unsigned long phys_base) { unsigned long bootmap_size, end_pfn; - unsigned long end_of_phys_memory = 0UL; - unsigned long bootmap_pfn, bytes_avail, size; + unsigned long bootmap_pfn, size; int i; - bytes_avail = 0UL; - for (i = 0; i < pavail_ents; i++) { - end_of_phys_memory = pavail[i].phys_addr + - pavail[i].reg_size; - bytes_avail += pavail[i].reg_size; - } - - if (cmdline_memory_size && - bytes_avail > cmdline_memory_size) - trim_pavail(&bytes_avail, - &end_of_phys_memory); - - *pages_avail = bytes_avail >> PAGE_SHIFT; - - end_pfn = end_of_phys_memory >> PAGE_SHIFT; + *pages_avail = lmb_phys_mem_size() >> PAGE_SHIFT; + end_pfn = lmb_end_of_DRAM() >> PAGE_SHIFT; /* Initialize the boot-time allocator. */ max_pfn = max_low_pfn = end_pfn; @@ -1355,6 +1232,9 @@ void __init paging_init(void) find_ramdisk(phys_base); + if (cmdline_memory_size) + lmb_enforce_memory_limit(phys_base + cmdline_memory_size); + lmb_analyze(); lmb_dump_all(); |