diff options
| author | Vineet Gupta <vgupta@synopsys.com> | 2013-01-18 15:12:20 +0530 |
|---|---|---|
| committer | Vineet Gupta <vgupta@synopsys.com> | 2013-02-15 23:15:53 +0530 |
| commit | d79e678d746d3d4234477f08ce7d27d55ebe283a (patch) | |
| tree | 9a8bd17a8b45fd99c8dbc02f783348cd90534933 /arch/arc/include | |
| parent | cc562d2eae93bc2768a6575d31c089719e8939e8 (diff) | |
ARC: TLB flush Handling
Signed-off-by: Vineet Gupta <vgupta@synopsys.com>
Diffstat (limited to 'arch/arc/include')
| -rw-r--r-- | arch/arc/include/asm/tlb.h | 17 | ||||
| -rw-r--r-- | arch/arc/include/asm/tlbflush.h | 28 |
2 files changed, 45 insertions, 0 deletions
diff --git a/arch/arc/include/asm/tlb.h b/arch/arc/include/asm/tlb.h index b571e121929..3eb2ce0bdfa 100644 --- a/arch/arc/include/asm/tlb.h +++ b/arch/arc/include/asm/tlb.h @@ -21,6 +21,23 @@ #ifndef __ASSEMBLY__ +#define tlb_flush(tlb) local_flush_tlb_mm((tlb)->mm) + +/* + * This pair is called at time of munmap/exit to flush cache and TLB entries + * for mappings being torn down. + * 1) cache-flush part -implemented via tlb_start_vma( ) can be NOP (for now) + * as we don't support aliasing configs in our VIPT D$. + * 2) tlb-flush part - implemted via tlb_end_vma( ) can be NOP as well- + * albiet for difft reasons - its better handled by moving to new ASID + * + * Note, read http://lkml.org/lkml/2004/1/15/6 + */ +#define tlb_start_vma(tlb, vma) +#define tlb_end_vma(tlb, vma) + +#define __tlb_remove_tlb_entry(tlb, ptep, address) + #include <linux/pagemap.h> #include <asm-generic/tlb.h> diff --git a/arch/arc/include/asm/tlbflush.h b/arch/arc/include/asm/tlbflush.h new file mode 100644 index 00000000000..b2f9bc7f68c --- /dev/null +++ b/arch/arc/include/asm/tlbflush.h @@ -0,0 +1,28 @@ +/* + * Copyright (C) 2004, 2007-2010, 2011-2012 Synopsys, Inc. (www.synopsys.com) + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License version 2 as + * published by the Free Software Foundation. + */ + +#ifndef __ASM_ARC_TLBFLUSH__ +#define __ASM_ARC_TLBFLUSH__ + +#include <linux/mm.h> + +void local_flush_tlb_all(void); +void local_flush_tlb_mm(struct mm_struct *mm); +void local_flush_tlb_page(struct vm_area_struct *vma, unsigned long page); +void local_flush_tlb_kernel_range(unsigned long start, unsigned long end); +void local_flush_tlb_range(struct vm_area_struct *vma, + unsigned long start, unsigned long end); + +/* XXX: Revisit for SMP */ +#define flush_tlb_range(vma, s, e) local_flush_tlb_range(vma, s, e) +#define flush_tlb_page(vma, page) local_flush_tlb_page(vma, page) +#define flush_tlb_kernel_range(s, e) local_flush_tlb_kernel_range(s, e) +#define flush_tlb_all() local_flush_tlb_all() +#define flush_tlb_mm(mm) local_flush_tlb_mm(mm) + +#endif |