From: Russell King <rmk+kernel@armlinux.org.uk>
Date: Fri, 20 Jul 2018 09:46:52 +0000 (+0100)
Subject: ARM: add PROC_VTABLE macros
X-Git-Url: http://review.tizen.org/git/?a=commitdiff_plain;h=5d4e2e7d6935bc5025344009843963e1e1f3f2ac;p=platform%2Fkernel%2Flinux-exynos.git

ARM: add PROC_VTABLE macros

Signed-off-by: Russell King <rmk+kernel@armlinux.org.uk>
---

diff --git a/arch/arm/include/asm/proc-fns.h b/arch/arm/include/asm/proc-fns.h
index e25f4392e1b2..4fd67e9e6003 100644
--- a/arch/arm/include/asm/proc-fns.h
+++ b/arch/arm/include/asm/proc-fns.h
@@ -23,7 +23,7 @@ struct mm_struct;
 /*
  * Don't change this structure - ASM code relies on it.
  */
-extern struct processor {
+struct processor {
 	/* MISC
 	 * get data abort address/flags
 	 */
@@ -79,9 +79,13 @@ extern struct processor {
 	unsigned int suspend_size;
 	void (*do_suspend)(void *);
 	void (*do_resume)(void *);
-} processor;
+};
 
 #ifndef MULTI_CPU
+static inline void init_proc_vtable(const struct processor *p)
+{
+}
+
 extern void cpu_proc_init(void);
 extern void cpu_proc_fin(void);
 extern int cpu_do_idle(void);
@@ -98,17 +102,25 @@ extern void cpu_reset(unsigned long addr, bool hvc) __attribute__((noreturn));
 extern void cpu_do_suspend(void *);
 extern void cpu_do_resume(void *);
 #else
-#define cpu_proc_init			processor._proc_init
-#define cpu_proc_fin			processor._proc_fin
-#define cpu_reset			processor.reset
-#define cpu_do_idle			processor._do_idle
-#define cpu_dcache_clean_area		processor.dcache_clean_area
-#define cpu_set_pte_ext			processor.set_pte_ext
-#define cpu_do_switch_mm		processor.switch_mm
+
+extern struct processor processor;
+#define PROC_VTABLE_FUNC(f)		processor.f
+static inline void init_proc_vtable(const struct processor *p)
+{
+	processor = *p;
+}
+
+#define cpu_proc_init			PROC_VTABLE_FUNC(_proc_init)
+#define cpu_proc_fin			PROC_VTABLE_FUNC(_proc_fin)
+#define cpu_reset			PROC_VTABLE_FUNC(reset)
+#define cpu_do_idle			PROC_VTABLE_FUNC(_do_idle)
+#define cpu_dcache_clean_area		PROC_VTABLE_FUNC(dcache_clean_area)
+#define cpu_set_pte_ext			PROC_VTABLE_FUNC(set_pte_ext)
+#define cpu_do_switch_mm		PROC_VTABLE_FUNC(switch_mm)
 
 /* These three are private to arch/arm/kernel/suspend.c */
-#define cpu_do_suspend			processor.do_suspend
-#define cpu_do_resume			processor.do_resume
+#define cpu_do_suspend			PROC_VTABLE_FUNC(do_suspend)
+#define cpu_do_resume			PROC_VTABLE_FUNC(do_resume)
 #endif
 
 extern void cpu_resume(void);
diff --git a/arch/arm/kernel/setup.c b/arch/arm/kernel/setup.c
index 35ca494c028c..161398b02422 100644
--- a/arch/arm/kernel/setup.c
+++ b/arch/arm/kernel/setup.c
@@ -686,9 +686,7 @@ static void __init setup_processor(void)
 	cpu_name = list->cpu_name;
 	__cpu_architecture = __get_cpu_architecture();
 
-#ifdef MULTI_CPU
-	processor = *list->proc;
-#endif
+	init_proc_vtable(list->proc);
 #ifdef MULTI_TLB
 	cpu_tlb = *list->tlb;
 #endif