[PATCH 0/5] Refactoring finding CPU phandles in DT

[Alireza Sanaee]

This series refactors the way CPU IDs are retrieved from the device
tree.

Usually, there is a for loop that goes over every single CPU that can be
avoided. This also reduces the amount of NULL pointer checks in drivers.
I have abstracted away that loop and introduced a new function
(of_cpu_node_to_id) for this.

This patchset is a subset of [1], where I removed content and patches
relevant to hyper-threaded cores for DT. Based on the discussion, the
code refactor is still useful, hence this patchset.

[1] https://lore.kernel.org/all/20250512080715.82-1-alireza.sanaee@huawei.com/

Alireza Sanaee (5):
  of: add infra for finding CPU id from phandle
  arch_topology: update CPU map to use the new API
  coresight: cti: Use of_cpu_phandle_to_id for grabbing CPU id
  coresight: Use of_cpu_phandle_to_id for grabbing CPU id
  perf/arm-dsu: refactor cpu id retrieval via new API
    of_cpu_phandle_to_id

 drivers/base/arch_topology.c                  | 12 ++++----
 .../coresight/coresight-cti-platform.c        | 15 ++--------
 .../hwtracing/coresight/coresight-platform.c  | 14 ++-------
 drivers/of/cpu.c                              | 29 +++++++++++++++++++
 drivers/perf/arm_dsu_pmu.c                    |  6 ++--
 include/linux/of.h                            |  9 ++++++
 6 files changed, 51 insertions(+), 34 deletions(-)

-- 
2.43.0