--- zzzz-none-000/linux-4.4.271/arch/arm64/include/asm/smp.h	2021-06-03 06:22:09.000000000 +0000
+++ hawkeye-5590-750/linux-4.4.271/arch/arm64/include/asm/smp.h	2023-04-19 10:22:27.000000000 +0000
@@ -16,11 +16,22 @@
 #ifndef __ASM_SMP_H
 #define __ASM_SMP_H
 
+#include <asm/percpu.h>
+
 #include <linux/threads.h>
 #include <linux/cpumask.h>
 #include <linux/thread_info.h>
 
-#define raw_smp_processor_id() (current_thread_info()->cpu)
+DECLARE_PER_CPU_READ_MOSTLY(int, cpu_number);
+
+/*
+ * We don't use this_cpu_read(cpu_number) as that has implicit writes to
+ * preempt_count, and associated (compiler) barriers, that we'd like to avoid
+ * the expense of. If we're preemptible, the value can be stale at use anyway.
+ * And we can't use this_cpu_ptr() either, as that winds up recursing back
+ * here under CONFIG_DEBUG_PREEMPT=y.
+ */
+#define raw_smp_processor_id() (*raw_cpu_ptr(&cpu_number))
 
 struct seq_file;
 
@@ -57,12 +68,16 @@
  */
 struct secondary_data {
 	void *stack;
+#ifdef CONFIG_THREAD_INFO_IN_TASK
+	struct task_struct *task;
+#endif
 };
 extern struct secondary_data secondary_data;
 extern void secondary_entry(void);
 
 extern void arch_send_call_function_single_ipi(int cpu);
 extern void arch_send_call_function_ipi_mask(const struct cpumask *mask);
+extern void arch_send_wakeup_ipi_mask(const struct cpumask *mask);
 
 extern int __cpu_disable(void);