[Crash-utility] Issues with kmem -i

[Sharyathi Nagesh]

On executing kmem -i over dump we are seeing these results

crash> kmem -i
                PAGES        TOTAL      PERCENTAGE
   TOTAL MEM   128778       503 MB         ----
        FREE    44244     172.8 MB   34% of TOTAL MEM
        USED    84534     330.2 MB   65% of TOTAL MEM
      SHARED    45690     178.5 MB   35% of TOTAL MEM
     BUFFERS     4371      17.1 MB    3% of TOTAL MEM
      CACHED    51358     200.6 MB   39% of TOTAL MEM
        SLAB        0            0    0% of TOTAL MEM
   
  TOTAL HIGH        0            0    0% of TOTAL MEM

This is due to the fact that
o mi->get_slabs field is turning out to be zero in dump_mem_map()
function. This is happening as vt->PG_slab field is not getting updated
with value(10 in this case) in vm_init(). This is happening as pte field
is taken from page structure.
	o Probable solutions: Hard code value vt->PG_slab ??

o The output is breaking as  totalhigh_pages is coming out zero,
So part of code in function dump_kmeminfo()
pct = freehighmem_pages ?
                        (freehighmem_pages * 100)/totalhigh_pages : 0;
Cause Arithmetic calculation error.

Still looking into the problem.
Regards
Sharyathi Nagesh