Revert "MIPS: Delete unused function add_temporary_entry."

#include <asm-generic/pgtable-nopmd.h>

/*

 * - add_temporary_entry() add a temporary TLB entry. We use TLB entries

 *	starting at the top and working down. This is for populating the

 *	TLB before trap_init() puts the TLB miss handler in place. It

 *	should be used only for entries matching the actual page tables,

 *	to prevent inconsistencies.

 */

extern int add_temporary_entry(unsigned long entrylo0, unsigned long entrylo1,

			       unsigned long entryhi, unsigned long pagemask);

/*

 * Basically we have the same two-level (which is the logical three level

 * Linux page table layout folded) page tables as the i386.  Some day

#endif /* CONFIG_TRANSPARENT_HUGEPAGE  */

/*

 * Used for loading TLB entries before trap_init() has started, when we

 * don't actually want to add a wired entry which remains throughout the

 * lifetime of the system

 */

static int temp_tlb_entry __cpuinitdata;

__init int add_temporary_entry(unsigned long entrylo0, unsigned long entrylo1,

			       unsigned long entryhi, unsigned long pagemask)

{

	int ret = 0;

	unsigned long flags;

	unsigned long wired;

	unsigned long old_pagemask;

	unsigned long old_ctx;

	local_irq_save(flags);

	/* Save old context and create impossible VPN2 value */

	old_ctx = read_c0_entryhi();

	old_pagemask = read_c0_pagemask();

	wired = read_c0_wired();

	if (--temp_tlb_entry < wired) {

		printk(KERN_WARNING

		       "No TLB space left for add_temporary_entry\n");

		ret = -ENOSPC;

		goto out;

	}

	write_c0_index(temp_tlb_entry);

	write_c0_pagemask(pagemask);

	write_c0_entryhi(entryhi);

	write_c0_entrylo0(entrylo0);

	write_c0_entrylo1(entrylo1);

	mtc0_tlbw_hazard();

	tlb_write_indexed();

	tlbw_use_hazard();

	write_c0_entryhi(old_ctx);

	write_c0_pagemask(old_pagemask);

out:

	local_irq_restore(flags);

	return ret;

}

static int ntlb;

static int __init set_ntlb(char *str)

{

		write_c0_pagegrain(pg);

	}

	temp_tlb_entry = current_cpu_data.tlbsize - 1;

	/* From this point on the ARC firmware is dead.	 */

	local_flush_tlb_all();