check_bugs() has become a dumping ground for all sorts of activities to
finalize the CPU initialization before running the rest of the init code.
Most are empty, a few do actual bug checks, some do alternative patching
and some cobble a CPU advertisement string together....
Aside of that the current implementation requires duplicated function
declaration and mostly empty header files for them.
Provide a new function arch_cpu_finalize_init(). Provide a generic
declaration if CONFIG_ARCH_HAS_CPU_FINALIZE_INIT is selected and a stub
inline otherwise.
This requires a temporary #ifdef in start_kernel() which will be removed
along with check_bugs() once the architectures are converted over.
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Link: https://lore.kernel.org/r/20230613224544.957805717@linutronix.de
config ARCH_HAS_DMA_CLEAR_UNCACHED
bool
config ARCH_HAS_DMA_CLEAR_UNCACHED
bool
+config ARCH_HAS_CPU_FINALIZE_INIT
+ bool
+
# Select if arch init_task must go in the __init_task_data section
config ARCH_TASK_STRUCT_ON_STACK
bool
# Select if arch init_task must go in the __init_task_data section
config ARCH_TASK_STRUCT_ON_STACK
bool
void arch_cpu_idle_exit(void);
void __noreturn arch_cpu_idle_dead(void);
void arch_cpu_idle_exit(void);
void __noreturn arch_cpu_idle_dead(void);
+#ifdef CONFIG_ARCH_HAS_CPU_FINALIZE_INIT
+void arch_cpu_finalize_init(void);
+#else
+static inline void arch_cpu_finalize_init(void) { }
+#endif
+
int cpu_report_state(int cpu);
int cpu_check_up_prepare(int cpu);
void cpu_set_state_online(int cpu);
int cpu_report_state(int cpu);
int cpu_check_up_prepare(int cpu);
void cpu_set_state_online(int cpu);
taskstats_init_early();
delayacct_init();
taskstats_init_early();
delayacct_init();
+ arch_cpu_finalize_init();
+ /* Temporary conditional until everything has been converted */
+#ifndef CONFIG_ARCH_HAS_CPU_FINALIZE_INIT
acpi_subsystem_init();
arch_post_acpi_subsys_init();
acpi_subsystem_init();
arch_post_acpi_subsys_init();