Subject: linux-next: build warnings after merge of the origin tree

From: Stephen Rothwell <[email-masked]>
Date: Tue, 30 Jul 2024 08:22:04 +1000

Hi all,

After merging the origin tree, today's linux-next build (powerpc
ppc64_defconfig) produced these warnings:

In file included from include/asm-generic/percpu.h:7,
                 from arch/powerpc/include/asm/percpu.h:28,
                 from include/linux/irqflags.h:19,
                 from include/linux/spinlock.h:59,
                 from include/linux/mmzone.h:8,
                 from include/linux/gfp.h:7,
                 from include/linux/mm.h:7,
                 from include/linux/memblock.h:12,
                 from kernel/profile.c:20:
kernel/profile.c:52:28: warning: 'cpu_profile_flip' defined but not used [-Wunused-variable]
   52 | static DEFINE_PER_CPU(int, cpu_profile_flip);
      |                            ^~~~~~~~~~~~~~~~
include/linux/percpu-defs.h:104:44: note: in definition of macro 'DEFINE_PER_CPU_SECTION'
  104 |         __PCPU_ATTRS(sec) __typeof__(type) name
      |                                            ^~~~
kernel/profile.c:52:8: note: in expansion of macro 'DEFINE_PER_CPU'
   52 | static DEFINE_PER_CPU(int, cpu_profile_flip);
      |        ^~~~~~~~~~~~~~
kernel/profile.c:51:48: warning: 'cpu_profile_hits' defined but not used [-Wunused-variable]
   51 | static DEFINE_PER_CPU(struct profile_hit *[2], cpu_profile_hits);
      |                                                ^~~~~~~~~~~~~~~~
include/linux/percpu-defs.h:104:44: note: in definition of macro 'DEFINE_PER_CPU_SECTION'
  104 |         __PCPU_ATTRS(sec) __typeof__(type) name
      |                                            ^~~~
kernel/profile.c:51:8: note: in expansion of macro 'DEFINE_PER_CPU'
   51 | static DEFINE_PER_CPU(struct profile_hit *[2], cpu_profile_hits);
      |        ^~~~~~~~~~~~~~

Introduced by commit

  2accfdb7eff6 ("profiling: attempt to remove per-cpu profile flip buffer")

-- 
Cheers,
Stephen Rothwell