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sched/core: Remove unused prefetch_stack()
prefetch_stack() is defined by IA64, but not actually used anywhere anymore. Remove it. Acked-by: Linus 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: Ingo Molnar <mingo@kernel.org>
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@ -19,8 +19,6 @@
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#include <asm/ptrace.h>
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#include <asm/ustack.h>
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#define ARCH_HAS_PREFETCH_SWITCH_STACK
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#define IA64_NUM_PHYS_STACK_REG 96
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#define IA64_NUM_DBG_REGS 8
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@ -455,29 +455,6 @@ GLOBAL_ENTRY(load_switch_stack)
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br.cond.sptk.many b7
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END(load_switch_stack)
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GLOBAL_ENTRY(prefetch_stack)
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add r14 = -IA64_SWITCH_STACK_SIZE, sp
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add r15 = IA64_TASK_THREAD_KSP_OFFSET, in0
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;;
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ld8 r16 = [r15] // load next's stack pointer
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lfetch.fault.excl [r14], 128
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;;
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lfetch.fault.excl [r14], 128
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lfetch.fault [r16], 128
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;;
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lfetch.fault.excl [r14], 128
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lfetch.fault [r16], 128
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;;
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lfetch.fault.excl [r14], 128
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lfetch.fault [r16], 128
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;;
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lfetch.fault.excl [r14], 128
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lfetch.fault [r16], 128
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;;
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lfetch.fault [r16], 128
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br.ret.sptk.many rp
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END(prefetch_stack)
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/*
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* Invoke a system call, but do some tracing before and after the call.
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* We MUST preserve the current register frame throughout this routine
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@ -247,12 +247,6 @@ struct sched_info {
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# define SCHED_FIXEDPOINT_SHIFT 10
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# define SCHED_FIXEDPOINT_SCALE (1L << SCHED_FIXEDPOINT_SHIFT)
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#ifdef ARCH_HAS_PREFETCH_SWITCH_STACK
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extern void prefetch_stack(struct task_struct *t);
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#else
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static inline void prefetch_stack(struct task_struct *t) { }
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#endif
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struct load_weight {
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unsigned long weight;
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u32 inv_weight;
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