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authorVineet Gupta <vgupta@synopsys.com>2013-01-18 15:12:20 +0530
committerVineet Gupta <vgupta@synopsys.com>2013-02-15 23:15:53 +0530
commitd79e678d746d3d4234477f08ce7d27d55ebe283a (patch)
tree9a8bd17a8b45fd99c8dbc02f783348cd90534933 /arch/arc/include/asm/tlb.h
parentcc562d2eae93bc2768a6575d31c089719e8939e8 (diff)
downloadop-kernel-dev-d79e678d746d3d4234477f08ce7d27d55ebe283a.zip
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ARC: TLB flush Handling
Signed-off-by: Vineet Gupta <vgupta@synopsys.com>
Diffstat (limited to 'arch/arc/include/asm/tlb.h')
-rw-r--r--arch/arc/include/asm/tlb.h17
1 files changed, 17 insertions, 0 deletions
diff --git a/arch/arc/include/asm/tlb.h b/arch/arc/include/asm/tlb.h
index b571e12..3eb2ce0 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>
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