Hi Shakeel,

Thank you for the patch! Yet something to improve:

[auto build test ERROR on mmotm/master]
[also build test ERROR on v4.16-rc2 next-20180220]
[cannot apply to linus/master]
[if your patch is applied to the wrong git tree, please drop us a note to help improve the system]

url:    https://github.com/0day-ci/linux/commits/Shakeel-Butt/Directed-kmem-charging/20180221-071026
base:   git://git.cmpxchg.org/linux-mmotm.git master
config: i386-tinyconfig (attached as .config)
compiler: gcc-7 (Debian 7.3.0-1) 7.3.0
reproduce:
        # save the attached .config to linux build tree
        make ARCH=i386 

All errors (new ones prefixed by >>):

   arch/x86/events/core.o: In function `allocate_fake_cpuc':

quoted

core.c:(.text+0x52b): undefined reference to `__kmalloc_memcg'

   arch/x86/events/core.o: In function `merge_attr':

quoted

core.c:(.init.text+0x2c): undefined reference to `__kmalloc_memcg'

   arch/x86/events/intel/core.o: In function `intel_pmu_cpu_prepare':
   core.c:(.text+0x1674): undefined reference to `__kmalloc_memcg'
   arch/x86/events/intel/pt.o: In function `pt_init':

quoted

pt.c:(.init.text+0x125): undefined reference to `__kmalloc_memcg'

   pt.c:(.init.text+0x13c): undefined reference to `__kmalloc_memcg'
   arch/x86/kernel/e820.o:e820.c:(.init.text+0xa5b): more undefined references to `__kmalloc_memcg' follow

---
0-DAY kernel test infrastructure                Open Source Technology Center
https://lists.01.org/pipermail/kbuild-all                   Intel Corporation