MIPS: Control huge tlb support via Kconfig symbol MIPS_HUGE_TLB_SUPPORT

We need Huge TLBs for HUGETLB_PAGE, or the soon to follow
TRANSPARENT_HUGEPAGE.  collect this information under a single Kconfig
symbol.

Signed-off-by: David Daney <david.daney@cavium.com>

7 files changed, 23 insertions, 20 deletions

diff --git a/arch/mips/Kconfig b/arch/mips/Kconfig
index dba9390d37cf..397194a263ce 100644
--- a/arch/mips/Kconfig
+++ b/arch/mips/Kconfig
@@ -1077,6 +1077,9 @@ config SYS_SUPPORTS_HUGETLBFS
         depends on CPU_SUPPORTS_HUGEPAGES && 64BIT
         default y
 
+config MIPS_HUGE_TLB_SUPPORT
+        def_bool HUGETLB_PAGE || TRANSPARENT_HUGEPAGE
+
 config IRQ_CPU
         bool
 
diff --git a/arch/mips/include/asm/mipsregs.h b/arch/mips/include/asm/mipsregs.h
index eb742895dcbe..881b980c72d2 100644
--- a/arch/mips/include/asm/mipsregs.h
+++ b/arch/mips/include/asm/mipsregs.h
@@ -240,7 +240,7 @@
 #define PM_HUGE_MASK    PM_64M
 #elif defined(CONFIG_PAGE_SIZE_64KB)
 #define PM_HUGE_MASK    PM_256M
-#elif defined(CONFIG_HUGETLB_PAGE)
+#elif defined(CONFIG_MIPS_HUGE_TLB_SUPPORT)
 #error Bad page size configuration for hugetlbfs!
 #endif
 
diff --git a/arch/mips/include/asm/page.h b/arch/mips/include/asm/page.h
index c48a7f0bcf3c..31ab10f02bad 100644
--- a/arch/mips/include/asm/page.h
+++ b/arch/mips/include/asm/page.h
@@ -33,17 +33,17 @@
 #define PAGE_SIZE       (_AC(1,UL) << PAGE_SHIFT)
 #define PAGE_MASK       (~(PAGE_SIZE - 1))
 
-#ifdef CONFIG_HUGETLB_PAGE
+#ifdef CONFIG_MIPS_HUGE_TLB_SUPPORT
 #define HPAGE_SHIFT     (PAGE_SHIFT + PAGE_SHIFT - 3)
 #define HPAGE_SIZE      (_AC(1,UL) << HPAGE_SHIFT)
 #define HPAGE_MASK      (~(HPAGE_SIZE - 1))
 #define HUGETLB_PAGE_ORDER      (HPAGE_SHIFT - PAGE_SHIFT)
-#else /* !CONFIG_HUGETLB_PAGE */
+#else /* !CONFIG_MIPS_HUGE_TLB_SUPPORT */
 #define HPAGE_SHIFT     ({BUILD_BUG(); 0; })
 #define HPAGE_SIZE      ({BUILD_BUG(); 0; })
 #define HPAGE_MASK      ({BUILD_BUG(); 0; })
 #define HUGETLB_PAGE_ORDER      ({BUILD_BUG(); 0; })
-#endif /* CONFIG_HUGETLB_PAGE */
+#endif /* CONFIG_MIPS_HUGE_TLB_SUPPORT */
 
 #ifndef __ASSEMBLY__
 
diff --git a/arch/mips/include/asm/pgtable-bits.h b/arch/mips/include/asm/pgtable-bits.h
index f8b8fb358412..1e2642c360a8 100644
--- a/arch/mips/include/asm/pgtable-bits.h
+++ b/arch/mips/include/asm/pgtable-bits.h
@@ -128,7 +128,7 @@
 #define _PAGE_MODIFIED          (1 << _PAGE_MODIFIED_SHIFT)
 #define _PAGE_FILE              (_PAGE_MODIFIED)
 
-#ifdef CONFIG_HUGETLB_PAGE
+#ifdef CONFIG_MIPS_HUGE_TLB_SUPPORT
 /* huge tlb page */
 #define _PAGE_HUGE_SHIFT        (_PAGE_MODIFIED_SHIFT + 1)
 #define _PAGE_HUGE              (1 << _PAGE_HUGE_SHIFT)
diff --git a/arch/mips/include/asm/sparsemem.h b/arch/mips/include/asm/sparsemem.h
index 4461198361c9..65900dab3ad3 100644
--- a/arch/mips/include/asm/sparsemem.h
+++ b/arch/mips/include/asm/sparsemem.h
@@ -6,7 +6,7 @@
  * SECTION_SIZE_BITS            2^N: how big each section will be
  * MAX_PHYSMEM_BITS             2^N: how much memory we can have in that space
  */
-#if defined(CONFIG_HUGETLB_PAGE) && defined(CONFIG_PAGE_SIZE_64KB)
+#if defined(CONFIG_MIPS_HUGE_TLB_SUPPORT) && defined(CONFIG_PAGE_SIZE_64KB)
 # define SECTION_SIZE_BITS      29
 #else
 # define SECTION_SIZE_BITS      28
diff --git a/arch/mips/mm/tlb-r4k.c b/arch/mips/mm/tlb-r4k.c
index 4b9b935a070e..936165d167e1 100644
--- a/arch/mips/mm/tlb-r4k.c
+++ b/arch/mips/mm/tlb-r4k.c
@@ -305,7 +305,7 @@ void __update_tlb(struct vm_area_struct * vma, unsigned long address, pte_t pte)
         pudp = pud_offset(pgdp, address);
         pmdp = pmd_offset(pudp, address);
         idx = read_c0_index();
-#ifdef CONFIG_HUGETLB_PAGE
+#ifdef CONFIG_MIPS_HUGE_TLB_SUPPORT
         /* this could be a huge page  */
         if (pmd_huge(*pmdp)) {
                 unsigned long lo;
diff --git a/arch/mips/mm/tlbex.c b/arch/mips/mm/tlbex.c
index a36b4955d4ed..98b2b732005a 100644
--- a/arch/mips/mm/tlbex.c
+++ b/arch/mips/mm/tlbex.c
@@ -158,7 +158,7 @@ enum label_id {
         label_smp_pgtable_change,
         label_r3000_write_probe_fail,
         label_large_segbits_fault,
-#ifdef CONFIG_HUGETLB_PAGE
+#ifdef CONFIG_MIPS_HUGE_TLB_SUPPORT
         label_tlb_huge_update,
 #endif
 };
@@ -177,7 +177,7 @@ UASM_L_LA(_nopage_tlbm)
 UASM_L_LA(_smp_pgtable_change)
 UASM_L_LA(_r3000_write_probe_fail)
 UASM_L_LA(_large_segbits_fault)
-#ifdef CONFIG_HUGETLB_PAGE
+#ifdef CONFIG_MIPS_HUGE_TLB_SUPPORT
 UASM_L_LA(_tlb_huge_update)
 #endif
 
@@ -666,7 +666,7 @@ static __cpuinit __maybe_unused void build_convert_pte_to_entrylo(u32 **p,
         }
 }
 
-#ifdef CONFIG_HUGETLB_PAGE
+#ifdef CONFIG_MIPS_HUGE_TLB_SUPPORT
 
 static __cpuinit void build_restore_pagemask(u32 **p,
                                              struct uasm_reloc **r,
@@ -792,7 +792,7 @@ static __cpuinit void build_huge_handler_tail(u32 **p,
         build_huge_update_entries(p, pte, ptr);
         build_huge_tlb_write_entry(p, l, r, pte, tlb_indexed, 0);
 }
-#endif /* CONFIG_HUGETLB_PAGE */
+#endif /* CONFIG_MIPS_HUGE_TLB_SUPPORT */
 
 #ifdef CONFIG_64BIT
 /*
@@ -1237,7 +1237,7 @@ build_fast_tlb_refill_handler (u32 **p, struct uasm_label **l,
         /* Adjust the context during the load latency. */
         build_adjust_context(p, tmp);
 
-#ifdef CONFIG_HUGETLB_PAGE
+#ifdef CONFIG_MIPS_HUGE_TLB_SUPPORT
         uasm_il_bbit1(p, r, scratch, ilog2(_PAGE_HUGE), label_tlb_huge_update);
         /*
          * The in the LWX case we don't want to do the load in the
@@ -1246,7 +1246,7 @@ build_fast_tlb_refill_handler (u32 **p, struct uasm_label **l,
          */
         if (use_lwx_insns())
                 uasm_i_nop(p);
-#endif /* CONFIG_HUGETLB_PAGE */
+#endif /* CONFIG_MIPS_HUGE_TLB_SUPPORT */
 
 
         /* build_update_entries */
@@ -1349,7 +1349,7 @@ static void __cpuinit build_r4000_tlb_refill_handler(void)
                 build_get_pgde32(&p, K0, K1); /* get pgd in K1 */
 #endif
 
-#ifdef CONFIG_HUGETLB_PAGE
+#ifdef CONFIG_MIPS_HUGE_TLB_SUPPORT
                 build_is_huge_pte(&p, &r, K0, K1, label_tlb_huge_update);
 #endif
 
@@ -1359,7 +1359,7 @@ static void __cpuinit build_r4000_tlb_refill_handler(void)
                 uasm_l_leave(&l, p);
                 uasm_i_eret(&p); /* return from trap */
         }
-#ifdef CONFIG_HUGETLB_PAGE
+#ifdef CONFIG_MIPS_HUGE_TLB_SUPPORT
         uasm_l_tlb_huge_update(&l, p);
         build_huge_update_entries(&p, htlb_info.huge_pte, K1);
         build_huge_tlb_write_entry(&p, &l, &r, K0, tlb_random,
@@ -1404,7 +1404,7 @@ static void __cpuinit build_r4000_tlb_refill_handler(void)
                 uasm_copy_handler(relocs, labels, tlb_handler, p, f);
                 final_len = p - tlb_handler;
         } else {
-#if defined(CONFIG_HUGETLB_PAGE)
+#ifdef CONFIG_MIPS_HUGE_TLB_SUPPORT
                 const enum label_id ls = label_tlb_huge_update;
 #else
                 const enum label_id ls = label_vmalloc;
@@ -1880,7 +1880,7 @@ build_r4000_tlbchange_handler_head(u32 **p, struct uasm_label **l,
         build_get_pgde32(p, wr.r1, wr.r2); /* get pgd in ptr */
 #endif
 
-#ifdef CONFIG_HUGETLB_PAGE
+#ifdef CONFIG_MIPS_HUGE_TLB_SUPPORT
         /*
          * For huge tlb entries, pmd doesn't contain an address but
          * instead contains the tlb pte. Check the PAGE_HUGE bit and
@@ -1996,7 +1996,7 @@ static void __cpuinit build_r4000_tlb_load_handler(void)
         build_make_valid(&p, &r, wr.r1, wr.r2);
         build_r4000_tlbchange_handler_tail(&p, &l, &r, wr.r1, wr.r2);
 
-#ifdef CONFIG_HUGETLB_PAGE
+#ifdef CONFIG_MIPS_HUGE_TLB_SUPPORT
         /*
          * This is the entry point when build_r4000_tlbchange_handler_head
          * spots a huge page.
@@ -2089,7 +2089,7 @@ static void __cpuinit build_r4000_tlb_store_handler(void)
         build_make_write(&p, &r, wr.r1, wr.r2);
         build_r4000_tlbchange_handler_tail(&p, &l, &r, wr.r1, wr.r2);
 
-#ifdef CONFIG_HUGETLB_PAGE
+#ifdef CONFIG_MIPS_HUGE_TLB_SUPPORT
         /*
          * This is the entry point when
          * build_r4000_tlbchange_handler_head spots a huge page.
@@ -2137,7 +2137,7 @@ static void __cpuinit build_r4000_tlb_modify_handler(void)
         build_make_write(&p, &r, wr.r1, wr.r2);
         build_r4000_tlbchange_handler_tail(&p, &l, &r, wr.r1, wr.r2);
 
-#ifdef CONFIG_HUGETLB_PAGE
+#ifdef CONFIG_MIPS_HUGE_TLB_SUPPORT
         /*
          * This is the entry point when
          * build_r4000_tlbchange_handler_head spots a huge page.