perf python: Port mem-phys-addr to perf module

Port mem-phys-addr.py to a standalone script in tools/perf/python/
using the perf.session API to read perf.data files and profile physical
memory access types against /proc/iomem.

Improvements compared to the legacy script:
- Parse the full indentation hierarchy of /proc/iomem into a parent-child
  tree of frozen IomemEntry dataclasses (instead of only top-level
  indent-0 ranges), resolving physical addresses to the most specific
  sub-range (such as Kernel code/data/bss inside System RAM) and rolling
  child counts up into parent totals.
- Support profiling multiple memory events in a single perf.data session
  (keyed by evsel name) instead of assuming a single global event.
- Add argparse CLI options (-i/--input and --iomem to allow supplying an
  offline /proc/iomem snapshot from a target system).

Add a shell test (test_mem_phys_addr_python.sh) to verify the standalone
script.

Assisted-by: Antigravity:gemini-3.1-pro
Signed-off-by: Ian Rogers <irogers@google.com>
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>

0 files changed, 0 insertions, 0 deletions