[PATCH] sched: sched_cacheflush is now unused

Since Ingo's recent scheduler rewrite which was merged as commit 0437e109e1841607f2988891eaa36c531c6aa6ac sched_cacheflush is unused. Signed-off-by: Ralf Baechle <ralf@linux-mips.org> Signed-off-by: Ingo Molnar <mingo@elte.hu>

[PATCH] sched: sched_cacheflush is now unused
Since Ingo's recent scheduler rewrite which was merged as commit 0437e109e1841607f2988891eaa36c531c6aa6ac sched_cacheflush is unused. Signed-off-by: Ralf Baechle <ralf@linux-mips.org> Signed-off-by: Ingo Molnar <mingo@elte.hu>
Ralf Baechle · Ingo Molnar
1 parent ce8c2293be
Showing 16 changed files with 0 additions and 149 deletions Side-by-side Diff
arch/ia64/kernel/setup.c
include/asm-alpha/system.h
include/asm-arm/system.h
include/asm-arm26/system.h
include/asm-i386/system.h
include/asm-ia64/system.h
include/asm-m32r/system.h
include/asm-mips/system.h
include/asm-parisc/system.h
include/asm-powerpc/system.h
include/asm-ppc/system.h
include/asm-s390/system.h
include/asm-sh/system.h
include/asm-sparc/system.h
include/asm-sparc64/system.h
include/asm-x86_64/system.h
@@ -980,15 +980,6 @@
 	pm_idle = default_idle;
 }
  
-/*
- * On SMP systems, when the scheduler does migration-cost autodetection,
- * it needs a way to flush as much of the CPU's caches as possible.
- */
-void sched_cacheflush(void)
-{
-	ia64_sal_cache_flush(3);
-}
-
 void __init
 check_bugs (void)
 {
@@ -139,16 +139,6 @@
 struct task_struct;
 extern struct task_struct *alpha_switch_to(unsigned long, struct task_struct*);
  
-/*
- * On SMP systems, when the scheduler does migration-cost autodetection,
- * it needs a way to flush as much of the CPU's caches as possible.
- *
- * TODO: fill this in!
- */
-static inline void sched_cacheflush(void)
-{
-}
-
 #define imb() \
 __asm__ __volatile__ ("call_pal %0 #imb" : : "i" (PAL_imb) : "memory")
  
@@ -254,16 +254,6 @@
 	last = __switch_to(prev,task_thread_info(prev), task_thread_info(next));	\
 } while (0)
  
-/*
- * On SMP systems, when the scheduler does migration-cost autodetection,
- * it needs a way to flush as much of the CPU's caches as possible.
- *
- * TODO: fill this in!
- */
-static inline void sched_cacheflush(void)
-{
-}
-
 #if defined(CONFIG_CPU_SA1100) || defined(CONFIG_CPU_SA110)
 /*
  * On the StrongARM, "swp" is terminally broken since it bypasses the
@@ -110,16 +110,6 @@
 } while (0)
  
 /*
- * On SMP systems, when the scheduler does migration-cost autodetection,
- * it needs a way to flush as much of the CPU's caches as possible.
- *
- * TODO: fill this in!
- */
-static inline void sched_cacheflush(void)
-{
-}
-
-/*
  * Save the current interrupt enable state & disable IRQs
  */
 #define local_irq_save(x)                               \
@@ -310,15 +310,6 @@
 extern int es7000_plat;
 void cpu_idle_wait(void);
  
-/*
- * On SMP systems, when the scheduler does migration-cost autodetection,
- * it needs a way to flush as much of the CPU's caches as possible:
- */
-static inline void sched_cacheflush(void)
-{
-	wbinvd();
-}
-
 extern unsigned long arch_align_stack(unsigned long sp);
 extern void free_init_pages(char *what, unsigned long begin, unsigned long end);
  
@@ -259,7 +259,6 @@
 #define ia64_platform_is(x) (strcmp(x, platform_name) == 0)
  
 void cpu_idle_wait(void);
-void sched_cacheflush(void);
  
 #define arch_align_stack(x) (x)
  
@@ -54,16 +54,6 @@
 	); \
 } while(0)
  
-/*
- * On SMP systems, when the scheduler does migration-cost autodetection,
- * it needs a way to flush as much of the CPU's caches as possible.
- *
- * TODO: fill this in!
- */
-static inline void sched_cacheflush(void)
-{
-}
-
 /* Interrupt Control */
 #if !defined(CONFIG_CHIP_M32102) && !defined(CONFIG_CHIP_M32104)
 #define local_irq_enable() \
@@ -71,16 +71,6 @@
 		write_c0_userlocal(task_thread_info(current)->tp_value);\
 } while(0)
  
-/*
- * On SMP systems, when the scheduler does migration-cost autodetection,
- * it needs a way to flush as much of the CPU's caches as possible.
- *
- * TODO: fill this in!
- */
-static inline void sched_cacheflush(void)
-{
-}
-
 static inline unsigned long __xchg_u32(volatile int * m, unsigned int val)
 {
 	__u32 retval;
@@ -48,17 +48,6 @@
 	(last) = _switch_to(prev, next);			\
 } while(0)
  
-/*
- * On SMP systems, when the scheduler does migration-cost autodetection,
- * it needs a way to flush as much of the CPU's caches as possible.
- *
- * TODO: fill this in!
- */
-static inline void sched_cacheflush(void)
-{
-}
-
-
 /* interrupt control */
 #define local_save_flags(x)	__asm__ __volatile__("ssm 0, %0" : "=r" (x) : : "memory")
 #define local_irq_disable()	__asm__ __volatile__("rsm %0,%%r0\n" : : "i" (PSW_I) : "memory" )
@@ -184,16 +184,6 @@
 extern struct task_struct *_switch(struct thread_struct *prev,
 				   struct thread_struct *next);
  
-/*
- * On SMP systems, when the scheduler does migration-cost autodetection,
- * it needs a way to flush as much of the CPU's caches as possible.
- *
- * TODO: fill this in!
- */
-static inline void sched_cacheflush(void)
-{
-}
-
 extern unsigned int rtas_data;
 extern int mem_init_done;	/* set on boot once kmalloc can be called */
 extern unsigned long memory_limit;
@@ -129,16 +129,6 @@
 	struct task_struct *);
 #define switch_to(prev, next, last)	((last) = __switch_to((prev), (next)))
  
-/*
- * On SMP systems, when the scheduler does migration-cost autodetection,
- * it needs a way to flush as much of the CPU's caches as possible.
- *
- * TODO: fill this in!
- */
-static inline void sched_cacheflush(void)
-{
-}
-
 struct thread_struct;
 extern struct task_struct *_switch(struct thread_struct *prev,
 				   struct thread_struct *next);
@@ -97,16 +97,6 @@
 	prev = __switch_to(prev,next);					     \
 } while (0)
  
-/*
- * On SMP systems, when the scheduler does migration-cost autodetection,
- * it needs a way to flush as much of the CPU's caches as possible.
- *
- * TODO: fill this in!
- */
-static inline void sched_cacheflush(void)
-{
-}
-
 #ifdef CONFIG_VIRT_CPU_ACCOUNTING
 extern void account_vtime(struct task_struct *);
 extern void account_tick_vtime(struct task_struct *);
@@ -64,16 +64,6 @@
 	last = __last;							\
 } while (0)
  
-/*
- * On SMP systems, when the scheduler does migration-cost autodetection,
- * it needs a way to flush as much of the CPU's caches as possible.
- *
- * TODO: fill this in!
- */
-static inline void sched_cacheflush(void)
-{
-}
-
 #ifdef CONFIG_CPU_SH4A
 #define __icbi()			\
 {					\
@@ -165,16 +165,6 @@
 	} while(0)
  
 /*
- * On SMP systems, when the scheduler does migration-cost autodetection,
- * it needs a way to flush as much of the CPU's caches as possible.
- *
- * TODO: fill this in!
- */
-static inline void sched_cacheflush(void)
-{
-}
-
-/*
  * Changing the IRQ level on the Sparc.
  */
 extern void local_irq_restore(unsigned long);
@@ -204,16 +204,6 @@
 	}								\
 } while(0)
  
-/*
- * On SMP systems, when the scheduler does migration-cost autodetection,
- * it needs a way to flush as much of the CPU's caches as possible.
- *
- * TODO: fill this in!
- */
-static inline void sched_cacheflush(void)
-{
-}
-
 static inline unsigned long xchg32(__volatile__ unsigned int *m, unsigned int val)
 {
 	unsigned long tmp1, tmp2;
@@ -111,15 +111,6 @@
 #define wbinvd() \
 	__asm__ __volatile__ ("wbinvd": : :"memory");
  
-/*
- * On SMP systems, when the scheduler does migration-cost autodetection,
- * it needs a way to flush as much of the CPU's caches as possible.
- */
-static inline void sched_cacheflush(void)
-{
-	wbinvd();
-}
-
 #endif	/* __KERNEL__ */
  
 #define nop() __asm__ __volatile__ ("nop")
...	...	@@ -980,15 +980,6 @@
980	980	pm_idle = default_idle;
981	981	}
982	982
983		-/*
984		- * On SMP systems, when the scheduler does migration-cost autodetection,
985		- * it needs a way to flush as much of the CPU's caches as possible.
986		- */
987		-void sched_cacheflush(void)
988		-{
989		- ia64_sal_cache_flush(3);
990		-}
991		-
992	983	void __init
993	984	check_bugs (void)
994	985	{
...	...	@@ -139,16 +139,6 @@
139	139	struct task_struct;
140	140	extern struct task_struct alpha_switch_to(unsigned long, struct task_struct);
141	141
142		-/*
143		- * On SMP systems, when the scheduler does migration-cost autodetection,
144		- * it needs a way to flush as much of the CPU's caches as possible.
145		- *
146		- * TODO: fill this in!
147		- */
148		-static inline void sched_cacheflush(void)
149		-{
150		-}
151		-
152	142	#define imb() \
153	143	__asm__ __volatile__ ("call_pal %0 #imb" : : "i" (PAL_imb) : "memory")
154	144
...	...	@@ -254,16 +254,6 @@
254	254	last = __switch_to(prev,task_thread_info(prev), task_thread_info(next)); \
255	255	} while (0)
256	256
257		-/*
258		- * On SMP systems, when the scheduler does migration-cost autodetection,
259		- * it needs a way to flush as much of the CPU's caches as possible.
260		- *
261		- * TODO: fill this in!
262		- */
263		-static inline void sched_cacheflush(void)
264		-{
265		-}
266		-
267	257	#if defined(CONFIG_CPU_SA1100) \|\| defined(CONFIG_CPU_SA110)
268	258	/*
269	259	* On the StrongARM, "swp" is terminally broken since it bypasses the
...	...	@@ -110,16 +110,6 @@
110	110	} while (0)
111	111
112	112	/*
113		- * On SMP systems, when the scheduler does migration-cost autodetection,
114		- * it needs a way to flush as much of the CPU's caches as possible.
115		- *
116		- * TODO: fill this in!
117		- */
118		-static inline void sched_cacheflush(void)
119		-{
120		-}
121		-
122		-/*
123	113	* Save the current interrupt enable state & disable IRQs
124	114	*/
125	115	#define local_irq_save(x) \
...	...	@@ -310,15 +310,6 @@
310	310	extern int es7000_plat;
311	311	void cpu_idle_wait(void);
312	312
313		-/*
314		- * On SMP systems, when the scheduler does migration-cost autodetection,
315		- * it needs a way to flush as much of the CPU's caches as possible:
316		- */
317		-static inline void sched_cacheflush(void)
318		-{
319		- wbinvd();
320		-}
321		-
322	313	extern unsigned long arch_align_stack(unsigned long sp);
323	314	extern void free_init_pages(char *what, unsigned long begin, unsigned long end);
324	315
...	...	@@ -259,7 +259,6 @@
259	259	#define ia64_platform_is(x) (strcmp(x, platform_name) == 0)
260	260
261	261	void cpu_idle_wait(void);
262		-void sched_cacheflush(void);
263	262
264	263	#define arch_align_stack(x) (x)
265	264
...	...	@@ -54,16 +54,6 @@
54	54	); \
55	55	} while(0)
56	56
57		-/*
58		- * On SMP systems, when the scheduler does migration-cost autodetection,
59		- * it needs a way to flush as much of the CPU's caches as possible.
60		- *
61		- * TODO: fill this in!
62		- */
63		-static inline void sched_cacheflush(void)
64		-{
65		-}
66		-
67	57	/* Interrupt Control */
68	58	#if !defined(CONFIG_CHIP_M32102) && !defined(CONFIG_CHIP_M32104)
69	59	#define local_irq_enable() \
...	...	@@ -71,16 +71,6 @@
71	71	write_c0_userlocal(task_thread_info(current)->tp_value);\
72	72	} while(0)
73	73
74		-/*
75		- * On SMP systems, when the scheduler does migration-cost autodetection,
76		- * it needs a way to flush as much of the CPU's caches as possible.
77		- *
78		- * TODO: fill this in!
79		- */
80		-static inline void sched_cacheflush(void)
81		-{
82		-}
83		-
84	74	static inline unsigned long __xchg_u32(volatile int * m, unsigned int val)
85	75	{
86	76	__u32 retval;
...	...	@@ -48,17 +48,6 @@
48	48	(last) = _switch_to(prev, next); \
49	49	} while(0)
50	50
51		-/*
52		- * On SMP systems, when the scheduler does migration-cost autodetection,
53		- * it needs a way to flush as much of the CPU's caches as possible.
54		- *
55		- * TODO: fill this in!
56		- */
57		-static inline void sched_cacheflush(void)
58		-{
59		-}
60		-
61		-
62	51	/* interrupt control */
63	52	#define local_save_flags(x) __asm__ __volatile__("ssm 0, %0" : "=r" (x) : : "memory")
64	53	#define local_irq_disable() __asm__ __volatile__("rsm %0,%%r0\n" : : "i" (PSW_I) : "memory" )
...	...	@@ -184,16 +184,6 @@
184	184	extern struct task_struct _switch(struct thread_struct prev,
185	185	struct thread_struct *next);
186	186
187		-/*
188		- * On SMP systems, when the scheduler does migration-cost autodetection,
189		- * it needs a way to flush as much of the CPU's caches as possible.
190		- *
191		- * TODO: fill this in!
192		- */
193		-static inline void sched_cacheflush(void)
194		-{
195		-}
196		-
197	187	extern unsigned int rtas_data;
198	188	extern int mem_init_done; /* set on boot once kmalloc can be called */
199	189	extern unsigned long memory_limit;