commit 4d653a59ffeae0f46f76a40230e2cfa9587b7e7e
Author: Siddhesh Poyarekar <siddhesh@redhat.com>
Date:   Fri May 30 22:43:52 2014 +0530
 
    Add mmap usage in malloc_info output
    
    The current malloc_info xml output only has information about
    allocations on the heap.  Display information about number of mappings
    and total mmapped size to this to complete the picture.
 
diff -pruN glibc-2.17-c758a686/malloc/malloc.c glibc-2.17-c758a686/malloc/malloc.c
--- glibc-2.17-c758a686/malloc/malloc.c	2014-06-02 07:35:22.573256155 +0530
+++ glibc-2.17-c758a686/malloc/malloc.c	2014-06-02 07:34:58.856257177 +0530
@@ -6553,12 +6553,14 @@ malloc_info (int options, FILE *fp)
   fprintf (fp,
 	   "<total type=\"fast\" count=\"%zu\" size=\"%zu\"/>\n"
 	   "<total type=\"rest\" count=\"%zu\" size=\"%zu\"/>\n"
+	   "<total type=\"mmap\" count=\"%d\" size=\"%zu\"/>\n"
 	   "<system type=\"current\" size=\"%zu\"/>\n"
 	   "<system type=\"max\" size=\"%zu\"/>\n"
 	   "<aspace type=\"total\" size=\"%zu\"/>\n"
 	   "<aspace type=\"mprotect\" size=\"%zu\"/>\n"
 	   "</malloc>\n",
 	   total_nfastblocks, total_fastavail, total_nblocks, total_avail,
+	   mp_.n_mmaps, mp_.mmapped_mem,
 	   total_system, total_max_system,
 	   total_aspace, total_aspace_mprotect);