Commit 3160b097 authored by Becky Bruce's avatar Becky Bruce Committed by Kumar Gala
Browse files

powerpc: Create next_tlbcam_idx percpu variable for FSL_BOOKE 



This is used to round-robin TLBCAM entries.

Signed-off-by: default avatarBecky Bruce <beckyb@kernel.crashing.org>
Signed-off-by: default avatarKumar Gala <galak@kernel.crashing.org>
parent f6ad160e

arch/powerpc/include/asm/mmu.h

+5 −0
Original line number Diff line number Diff line
@@ -115,6 +115,11 @@ 
#ifndef __ASSEMBLY__

#include <asm/cputable.h>



#ifdef CONFIG_PPC_FSL_BOOK3E

#include <asm/percpu.h>

DECLARE_PER_CPU(int, next_tlbcam_idx);

#endif



static inline int mmu_has_feature(unsigned long feature)

{

	return (cur_cpu_spec->mmu_features & feature);

arch/powerpc/kernel/smp.c

+4 −0
Original line number Diff line number Diff line
@@ -305,6 +305,10 @@ struct thread_info *current_set[NR_CPUS]; 
static void __devinit smp_store_cpu_info(int id)

{

	per_cpu(cpu_pvr, id) = mfspr(SPRN_PVR);

#ifdef CONFIG_PPC_FSL_BOOK3E

	per_cpu(next_tlbcam_idx, id)

		= (mfspr(SPRN_TLB1CFG) & TLBnCFG_N_ENTRY) - 1;

#endif

}



void __init smp_prepare_cpus(unsigned int max_cpus)

arch/powerpc/mm/mem.c

+9 −0
Original line number Diff line number Diff line
@@ -353,6 +353,15 @@ void __init mem_init(void) 
	}

#endif /* CONFIG_HIGHMEM */



#if defined(CONFIG_PPC_FSL_BOOK3E) && !defined(CONFIG_SMP)

	/*

	 * If smp is enabled, next_tlbcam_idx is initialized in the cpu up

	 * functions.... do it here for the non-smp case.

	 */

	per_cpu(next_tlbcam_idx, smp_processor_id()) =

		(mfspr(SPRN_TLB1CFG) & TLBnCFG_N_ENTRY) - 1;

#endif



	printk(KERN_INFO "Memory: %luk/%luk available (%luk kernel code, "

	       "%luk reserved, %luk data, %luk bss, %luk init)\n",

		nr_free_pages() << (PAGE_SHIFT-10),

arch/powerpc/mm/tlb_nohash.c

+6 −0
Original line number Diff line number Diff line
@@ -102,6 +102,12 @@ unsigned long linear_map_top; /* Top of linear mapping */ 


#endif /* CONFIG_PPC64 */



#ifdef CONFIG_PPC_FSL_BOOK3E

/* next_tlbcam_idx is used to round-robin tlbcam entry assignment */

DEFINE_PER_CPU(int, next_tlbcam_idx);

EXPORT_PER_CPU_SYMBOL(next_tlbcam_idx);

#endif



/*

 * Base TLB flushing operations:

 *

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