genirq/affinity: Only build SMP-only helper functions on SMP kernels
authorIngo Molnar <mingo@kernel.org>
Wed, 18 Jan 2023 11:14:01 +0000 (12:14 +0100)
committerIngo Molnar <mingo@kernel.org>
Wed, 18 Jan 2023 11:16:47 +0000 (12:16 +0100)
commit188a569658584e93930ab60334c5a1079c0330d8
tree6ce09e489b47df3172ee819c9b80bc11feefc34d
parent6a6dcae8f486c3f3298d0767d34505121c7b0b81
genirq/affinity: Only build SMP-only helper functions on SMP kernels

allnoconfig grew these new build warnings in lib/group_cpus.c:

  lib/group_cpus.c:247:12: warning: ‘__group_cpus_evenly’ defined but not used [-Wunused-function]
  lib/group_cpus.c:75:13: warning: ‘build_node_to_cpumask’ defined but not used [-Wunused-function]
  lib/group_cpus.c:66:13: warning: ‘free_node_to_cpumask’ defined but not used [-Wunused-function]
  lib/group_cpus.c:43:23: warning: ‘alloc_node_to_cpumask’ defined but not used [-Wunused-function]

Widen the #ifdef CONFIG_SMP block to not expose unused helpers on
non-SMP builds.

Also annotate the preprocessor branches for better readability.

Fixes: f7b3ea8cf72f ("genirq/affinity: Move group_cpus_evenly() into lib/")
Cc: Ming Lei <ming.lei@redhat.com>
Cc: Thomas Gleixner <tglx@linutronix.de>
Link: https://lore.kernel.org/r/20221227022905.352674-6-ming.lei@redhat.com
Signed-off-by: Ingo Molnar <mingo@kernel.org>
lib/group_cpus.c