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init: Provide arch_cpu_finalize_init()
commit 7725acaa4f
upstream
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
Signed-off-by: Daniel Sneddon <daniel.sneddon@linux.intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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3 changed files with 14 additions and 0 deletions
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@ -237,6 +237,9 @@ config ARCH_HAS_FORTIFY_SOURCE
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config ARCH_HAS_SET_MEMORY
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bool
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config ARCH_HAS_CPU_FINALIZE_INIT
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bool
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# Select if arch init_task initializer is different to init/init_task.c
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config ARCH_INIT_TASK
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bool
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@ -178,6 +178,12 @@ void arch_cpu_idle_enter(void);
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void arch_cpu_idle_exit(void);
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void arch_cpu_idle_dead(void);
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#ifdef CONFIG_ARCH_HAS_CPU_FINALIZE_INIT
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void arch_cpu_finalize_init(void);
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#else
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static inline void arch_cpu_finalize_init(void) { }
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#endif
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int cpu_report_state(int cpu);
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int cpu_check_up_prepare(int cpu);
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void cpu_set_state_online(int cpu);
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@ -698,7 +698,12 @@ asmlinkage __visible void __init start_kernel(void)
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taskstats_init_early();
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delayacct_init();
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arch_cpu_finalize_init();
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/* Temporary conditional until everything has been converted */
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#ifndef CONFIG_ARCH_HAS_CPU_FINALIZE_INIT
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check_bugs();
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#endif
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acpi_subsystem_init();
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arch_post_acpi_subsys_init();
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