ARC: Diagnostics: show_regs() etc

Signed-off-by: Vineet Gupta <vgupta@synopsys.com>

1 files changed, 20 insertions, 0 deletions

diff --git a/arch/arc/mm/tlbex.S b/arch/arc/mm/tlbex.S
index fc5b97129e55..164b02169498 100644
--- a/arch/arc/mm/tlbex.S
+++ b/arch/arc/mm/tlbex.S
@@ -133,6 +133,14 @@ ex_saved_reg1:
         lsr     r0, r2, (PAGE_SHIFT - 2)
         and     r0, r0, ( (PTRS_PER_PTE - 1) << 2)
         ld.aw   r0, [r1, r0]            ; get PTE and PTE ptr for fault addr
+#ifdef CONFIG_ARC_DBG_TLB_MISS_COUNT
+        and.f 0, r0, _PAGE_PRESENT
+        bz   1f
+        ld   r2, [num_pte_not_present]
+        add  r2, r2, 1
+        st   r2, [num_pte_not_present]
+1:
+#endif
 
 .endm
 
@@ -219,6 +227,12 @@ ARC_ENTRY EV_TLBMissI
 
         TLBMISS_FREEUP_REGS
 
+#ifdef CONFIG_ARC_DBG_TLB_MISS_COUNT
+        ld  r0, [@numitlb]
+        add r0, r0, 1
+        st  r0, [@numitlb]
+#endif
+
         ;----------------------------------------------------------------
         ; Get the PTE corresponding to V-addr accessed
         LOAD_FAULT_PTE
@@ -252,6 +266,12 @@ ARC_ENTRY EV_TLBMissD
 
         TLBMISS_FREEUP_REGS
 
+#ifdef CONFIG_ARC_DBG_TLB_MISS_COUNT
+        ld  r0, [@numdtlb]
+        add r0, r0, 1
+        st  r0, [@numdtlb]
+#endif
+
         ;----------------------------------------------------------------
         ; Get the PTE corresponding to V-addr accessed
         ; If PTE exists, it will setup, r0 = PTE, r1 = Ptr to PTE