hugetlb: printk cleanup

- Reword sentence to clarify meaning with multiple options
- Add support for using GB prefixes for the page size
- Add extra printk to delayed > MAX_ORDER allocation code

Acked-by: Adam Litke <agl@us.ibm.com>
Acked-by: Nishanth Aravamudan <nacc@us.ibm.com>
Signed-off-by: Andi Kleen <ak@suse.de>
Signed-off-by: Nick Piggin <npiggin@suse.de>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

diff --git a/mm/hugetlb.c b/mm/hugetlb.c
index 243a8684d180c127729c1aaa3ce3702bac52edd2..0c74c14dd2f7a367de4b034c0c5e0d870c02b905 100644 (file)
--- a/mm/hugetlb.c
+++ b/mm/hugetlb.c
@@ -1006,15 +1006,27 @@ static void __init hugetlb_init_hstates(void)
        }
 }
 
+static char * __init memfmt(char *buf, unsigned long n)
+{
+       if (n >= (1UL << 30))
+               sprintf(buf, "%lu GB", n >> 30);
+       else if (n >= (1UL << 20))
+               sprintf(buf, "%lu MB", n >> 20);
+       else
+               sprintf(buf, "%lu KB", n >> 10);
+       return buf;
+}
+
 static void __init report_hugepages(void)
 {
        struct hstate *h;
 
        for_each_hstate(h) {
-               printk(KERN_INFO "Total HugeTLB memory allocated, "
-                               "%ld %dMB pages\n",
-                               h->free_huge_pages,
-                               1 << (h->order + PAGE_SHIFT - 20));
+               char buf[32];
+               printk(KERN_INFO "HugeTLB registered %s page size, "
+                                "pre-allocated %ld pages\n",
+                       memfmt(buf, huge_page_size(h)),
+                       h->free_huge_pages);
        }
 }