Thanks Casper. Used macro 'PATH_KSM' and removed braces. And tested the 
same.

ksm01, ksm01_1:
Before patch:
...
ksm01       0  TINFO  :  KSM merging...
ksm01       1  TBROK  :  open: errno=ENOENT(2): No such file or directory
ksm01       2  TBROK  :  Remaining cases broken
...

After patch:
...
ksm01       1  TCONF  :  KSM configuration is not enabled
ksm01       2  TCONF  :  Remaining cases not appropriate for configuration
...

Signed-off-by: Nageswara R Sastry <rnsastry@linux.vnet.ibm.com>

-- 
Regards
R.Nageswara Sastry