diff options
| author | Uros Bizjak <[email protected]> | 2023-11-30 17:27:35 +0100 |
|---|---|---|
| committer | Ingo Molnar <[email protected]> | 2023-11-30 20:19:33 +0100 |
| commit | 4604c052b84d66407f5e68045a1939685eac401e (patch) | |
| tree | bfdce150937eea37cb86db0c7072c4057688bb81 | |
| parent | 6724ba89e0b03667d56616614f55e1f772d38fdb (diff) | |
x86/percpu: Declare const_pcpu_hot as extern const variable
const_pcpu_hot is aliased by linker to pcpu_hot, so there is no need
to use the DECLARE_PER_CPU_ALIGNED() macro. Also, declare const_pcpu_hot
as extern to avoid allocating storage space for the aliased structure.
Fixes: ed2f752e0e0a ("x86/percpu: Introduce const-qualified const_pcpu_hot to micro-optimize code generation")
Reported-by: kernel test robot <[email protected]>
Signed-off-by: Uros Bizjak <[email protected]>
Signed-off-by: Ingo Molnar <[email protected]>
Link: https://lore.kernel.org/r/[email protected]
Closes: https://lore.kernel.org/oe-kbuild-all/[email protected]/
| -rw-r--r-- | arch/x86/include/asm/current.h | 3 |
1 files changed, 1 insertions, 2 deletions
diff --git a/arch/x86/include/asm/current.h b/arch/x86/include/asm/current.h index 0538d2436673..9fbd7cb2dc86 100644 --- a/arch/x86/include/asm/current.h +++ b/arch/x86/include/asm/current.h @@ -37,8 +37,7 @@ static_assert(sizeof(struct pcpu_hot) == 64); DECLARE_PER_CPU_ALIGNED(struct pcpu_hot, pcpu_hot); /* const-qualified alias to pcpu_hot, aliased by linker. */ -DECLARE_PER_CPU_ALIGNED(const struct pcpu_hot __percpu_seg_override, - const_pcpu_hot); +extern const struct pcpu_hot __percpu_seg_override const_pcpu_hot; static __always_inline struct task_struct *get_current(void) { |