[xen master] smp: move cpu_is_offline() definition

[patchbot@xxxxxxx]

commit cad6f9a4c12dd4d5cdb2620e3fe24727ee81c7ce
Author:     Jan Beulich <jbeulich@xxxxxxxx>
AuthorDate: Thu Dec 14 10:56:07 2023 +0100
Commit:     Jan Beulich <jbeulich@xxxxxxxx>
CommitDate: Thu Dec 14 10:56:07 2023 +0100

    smp: move cpu_is_offline() definition
    
    It's all the same for the 3 arch-es which have it, and RISC-V would
    introduce a 4th instance. Put it in xen/smp.h instead, while still
    permitting asm/smp.h to define a custom variant if need be.
    
    Signed-off-by: Jan Beulich <jbeulich@xxxxxxxx>
    Acked-by: George Dunlap <george.dunlap@xxxxxxxxx>
    Reviewed-by: Oleksii Kurochko <oleksii.kurochko@xxxxxxxxx>
    Acked-by: Shawn Anastasio <sanastasio@xxxxxxxxxxxxxxxxxxxxx>
    Acked-by: Julien Grall <jgrall@xxxxxxxxxx>
---
 xen/arch/arm/include/asm/smp.h | 2 --
 xen/arch/ppc/include/asm/smp.h | 2 --
 xen/arch/x86/include/asm/smp.h | 1 -
 xen/include/xen/smp.h          | 4 ++++
 4 files changed, 4 insertions(+), 5 deletions(-)

diff --git a/xen/arch/arm/include/asm/smp.h b/xen/arch/arm/include/asm/smp.h
index bd489793fa..e99a3a3f53 100644
--- a/xen/arch/arm/include/asm/smp.h
+++ b/xen/arch/arm/include/asm/smp.h
@@ -12,8 +12,6 @@ extern unsigned long smp_up_cpu;
 DECLARE_PER_CPU(cpumask_var_t, cpu_sibling_mask);
 DECLARE_PER_CPU(cpumask_var_t, cpu_core_mask);
 
-#define cpu_is_offline(cpu) unlikely(!cpu_online(cpu))
-
 /*
  * Do we, for platform reasons, need to actually keep CPUs online when we
  * would otherwise prefer them to be off?
diff --git a/xen/arch/ppc/include/asm/smp.h b/xen/arch/ppc/include/asm/smp.h
index eca43f0e6c..7b1517ce18 100644
--- a/xen/arch/ppc/include/asm/smp.h
+++ b/xen/arch/ppc/include/asm/smp.h
@@ -7,8 +7,6 @@
 DECLARE_PER_CPU(cpumask_var_t, cpu_sibling_mask);
 DECLARE_PER_CPU(cpumask_var_t, cpu_core_mask);
 
-#define cpu_is_offline(cpu) unlikely(!cpu_online(cpu))
-
 /*
  * Do we, for platform reasons, need to actually keep CPUs online when we
  * would otherwise prefer them to be off?
diff --git a/xen/arch/x86/include/asm/smp.h b/xen/arch/x86/include/asm/smp.h
index 761edfcd34..c8c7960134 100644
--- a/xen/arch/x86/include/asm/smp.h
+++ b/xen/arch/x86/include/asm/smp.h
@@ -43,7 +43,6 @@ extern u32 x86_cpu_to_apicid[];
 
 #define cpu_physical_id(cpu)   x86_cpu_to_apicid[cpu]
 
-#define cpu_is_offline(cpu) unlikely(!cpu_online(cpu))
 extern void cpu_exit_clear(unsigned int cpu);
 extern void cpu_uninit(unsigned int cpu);
 int cpu_add(uint32_t apic_id, uint32_t acpi_id, uint32_t pxm);
diff --git a/xen/include/xen/smp.h b/xen/include/xen/smp.h
index 0a9219173f..2ca9ff1bfc 100644
--- a/xen/include/xen/smp.h
+++ b/xen/include/xen/smp.h
@@ -3,6 +3,10 @@
 
 #include <asm/smp.h>
 
+#ifndef cpu_is_offline
+#define cpu_is_offline(cpu) unlikely(!cpu_online(cpu))
+#endif
+
 /*
  * stops all CPUs but the current one:
  */
--
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