0001-Cgroups-v2.patch

[anjalidk]

• Re-organized resmem_cg.c code efficiently to use cgroups v2.
• Changed cgmemread to cgmem & cgmemval, adding new calls like cg_free_mem, cg_free_swap, cg_active, cg_inactive which reuse the existing calls.
• Modified getmeminfoall to use above functions.
• Added new function cg_res_val so it can be re-used with normal API and the bulk API.
• Completed cgroups v2 code for RES_MEM_FREE, RES_MEM_AVAILABLE, RES_MEM_TOTAL RES_MEM_ACTIVE, RES_MEM_INACTIVE, RES_MEM_SWAPTOTAL, RES_MEM_SWAPFREE, RES_MEM_INFOALL. To differentiate between normal memory, pid field is non-null in cgroups calls.
• Added scaling for cgroups which use the res->res_unit[i] fields to get bulk info about different fields at once.
• Bulk API is fetched using the cg_res_val() call
• Added Makefile to tests/MEM and added cgroups test code in mem_test_cg.c.
• Fixed mem.sh to use Makefile.
• Fixed some misc. issues in resfs.c, resnet.c, resmem.c, resproc.c, resvm.c, stat.c, resource_impl.h.