The code represent memory/cache level data based on PERF_MEM_LVL_*
namespace, which is in the process of deprication in the favour of newer
composite PERF_MEM_{LVLNUM_,REMOTE_,SNOOPX_,HOPS_} fields.  Add data
source encodings to represent cache/memory data based on newer composite
PERF_MEM_{LVLNUM_,REMOTE_,SNOOPX_,HOPS_} fields.

Add data source encodings to represent data coming from local
memory/Remote memory/distant memory and remote/distant cache hits.

Inorder to represent data coming from OpenCAPI cache/memory, we use
LVLNUM "PMEM" field which is used to present persistent memory accesses.

Result in power10 system with patch changes:

  localhost:# ./perf mem report --sort="mem,sym,dso" --stdio
  # Overhead  Samples  Memory access                           Symbol                       Shared Object
  # ........  .......  ......................................  ...........................  .................
  #
     29.46%     2331  L1 or L1 hit                             [.] __random                 libc-2.28.so
     23.11%     2121  L1 or L1 hit                             [.] producer_populate_cache  producer_consumer
     18.56%     1758  L1 or L1 hit                             [.] __random_r               libc-2.28.so
     15.64%     1559  L2 or L2 hit                             [.] __random                 libc-2.28.so
     .....
     0.09%         5  Remote socket, same board Any cache hit  [.] __random                 libc-2.28.so
     0.07%         4  Remote socket, same board Any cache hit  [.] __random                 libc-2.28.so
     .....
Reviewed-by: Madhavan Srinivasan <maddy@linux.ibm.com>
Signed-off-by: Kajol Jain <kjain@linux.ibm.com>
Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com>
Cc: Alexei Starovoitov <ast@kernel.org>
Cc: Andi Kleen <ak@linux.intel.com>
Cc: Athira Jajeev <atrajeev@linux.vnet.ibm.com>
Cc: Daniel Borkmann <daniel@iogearbox.net>
Cc: Jin Yao <yao.jin@linux.intel.com>
Cc: Jiri Olsa <jolsa@kernel.org>
Cc: Kan Liang <kan.liang@linux.intel.com>
Cc: Mark Rutland <mark.rutland@arm.com>
Cc: Michael Ellerman <mpe@ellerman.id.au>
Cc: Nageswara R Sastry <rnsastry@linux.ibm.com>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Paul Mackerras <paulus@samba.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Song Liu <songliubraving@fb.com>
Cc: linuxppc-dev@lists.ozlabs.org
Link: http://lore.kernel.org/lkml/20211206091749.87585-5-kjain@linux.ibm.comSigned-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>