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Commit 2c873d55 authored by Ingo Molnar's avatar Ingo Molnar
Browse files

sched/core: Remove unused prefetch_stack() 



prefetch_stack() is defined by IA64, but not actually used anywhere anymore.

Remove it.

Acked-by: default avatarLinus Torvalds <torvalds@linux-foundation.org>
Cc: Mike Galbraith <efault@gmx.de>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Thomas Gleixner <tglx@linutronix.de>
Signed-off-by: default avatarIngo Molnar <mingo@kernel.org>
parent b68070e1

arch/ia64/include/asm/processor.h

+0 −2
Original line number Diff line number Diff line
@@ -19,8 +19,6 @@ 
#include <asm/ptrace.h>

#include <asm/ustack.h>



#define ARCH_HAS_PREFETCH_SWITCH_STACK



#define IA64_NUM_PHYS_STACK_REG	96

#define IA64_NUM_DBG_REGS	8

arch/ia64/kernel/entry.S

+0 −23
Original line number Diff line number Diff line
@@ -455,29 +455,6 @@ GLOBAL_ENTRY(load_switch_stack) 
	br.cond.sptk.many b7

END(load_switch_stack)



GLOBAL_ENTRY(prefetch_stack)

	add r14 = -IA64_SWITCH_STACK_SIZE, sp

	add r15 = IA64_TASK_THREAD_KSP_OFFSET, in0

	;;

	ld8 r16 = [r15]				// load next's stack pointer

	lfetch.fault.excl [r14], 128

	;;

	lfetch.fault.excl [r14], 128

	lfetch.fault [r16], 128

	;;

	lfetch.fault.excl [r14], 128

	lfetch.fault [r16], 128

	;;

	lfetch.fault.excl [r14], 128

	lfetch.fault [r16], 128

	;;

	lfetch.fault.excl [r14], 128

	lfetch.fault [r16], 128

	;;

	lfetch.fault [r16], 128

	br.ret.sptk.many rp

END(prefetch_stack)



	/*

	 * Invoke a system call, but do some tracing before and after the call.

	 * We MUST preserve the current register frame throughout this routine

include/linux/sched.h

+0 −6
Original line number Diff line number Diff line
@@ -247,12 +247,6 @@ struct sched_info { 
# define SCHED_FIXEDPOINT_SHIFT	10

# define SCHED_FIXEDPOINT_SCALE	(1L << SCHED_FIXEDPOINT_SHIFT)



#ifdef ARCH_HAS_PREFETCH_SWITCH_STACK

extern void prefetch_stack(struct task_struct *t);

#else

static inline void prefetch_stack(struct task_struct *t) { }

#endif



struct load_weight {

	unsigned long weight;

	u32 inv_weight;