MIPS: dump_tlb: Fix printk continuations

Since commit 4bcc595ccd80 ("printk: reinstate KERN_CONT for printing
continuation lines") the output from TLB dumps on MIPS has been
pretty unreadable due to the lack of KERN_CONT markers. Use pr_cont to
provide the appropriate markers & restore the expected output.

Continuation is also used for the second line of each TLB entry printed
in dump_tlb.c even though it has a newline, since it is a continuation
of the interpretation of the same TLB entry. For example:

[   46.371884] Index:  0 pgmask=16kb va=77654000 asid=73 gid=00
        [ri=0 xi=0 pa=ffc18000 c=5 d=0 v=1 g=0] [ri=0 xi=0 pa=ffc1c000 c=5 d=0 v=1 g=0]
[   46.385380] Index: 12 pgmask=16kb va=004b4000 asid=73 gid=00
        [ri=0 xi=0 pa=00000000 c=0 d=0 v=0 g=0] [ri=0 xi=0 pa=ffb00000 c=5 d=1 v=1 g=0]

Signed-off-by: James Hogan <james.hogan@imgtec.com>
Cc: Maciej W. Rozycki <macro@imgtec.com>
Cc: linux-mips@linux-mips.org
Patchwork: https://patchwork.linux-mips.org/patch/14444/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>

arch/mips/lib/dump_tlb.c

@@ -135,42 +135,42 @@ static void dump_tlb(int first, int last)
 		c0 = (entrylo0 & ENTRYLO_C) >> ENTRYLO_C_SHIFT;
 		c1 = (entrylo1 & ENTRYLO_C) >> ENTRYLO_C_SHIFT;
 
-		printk("va=%0*lx asid=%0*lx",
-		       vwidth, (entryhi & ~0x1fffUL),
-		       asidwidth, entryhi & asidmask);
+		pr_cont("va=%0*lx asid=%0*lx",
+			vwidth, (entryhi & ~0x1fffUL),
+			asidwidth, entryhi & asidmask);
 		if (cpu_has_guestid)
-			printk(" gid=%02lx",
-			       (guestctl1 & MIPS_GCTL1_RID)
+			pr_cont(" gid=%02lx",
+				(guestctl1 & MIPS_GCTL1_RID)
 					>> MIPS_GCTL1_RID_SHIFT);
 		/* RI/XI are in awkward places, so mask them off separately */
 		pa = entrylo0 & ~(MIPS_ENTRYLO_RI | MIPS_ENTRYLO_XI);
 		if (xpa)
 			pa |= (unsigned long long)readx_c0_entrylo0() << 30;
 		pa = (pa << 6) & PAGE_MASK;
-		printk("\n\t[");
+		pr_cont("\n\t[");
 		if (cpu_has_rixi)
-			printk("ri=%d xi=%d ",
-			       (entrylo0 & MIPS_ENTRYLO_RI) ? 1 : 0,
-			       (entrylo0 & MIPS_ENTRYLO_XI) ? 1 : 0);
-		printk("pa=%0*llx c=%d d=%d v=%d g=%d] [",
-		       pwidth, pa, c0,
-		       (entrylo0 & ENTRYLO_D) ? 1 : 0,
-		       (entrylo0 & ENTRYLO_V) ? 1 : 0,
-		       (entrylo0 & ENTRYLO_G) ? 1 : 0);
+			pr_cont("ri=%d xi=%d ",
+				(entrylo0 & MIPS_ENTRYLO_RI) ? 1 : 0,
+				(entrylo0 & MIPS_ENTRYLO_XI) ? 1 : 0);
+		pr_cont("pa=%0*llx c=%d d=%d v=%d g=%d] [",
+			pwidth, pa, c0,
+			(entrylo0 & ENTRYLO_D) ? 1 : 0,
+			(entrylo0 & ENTRYLO_V) ? 1 : 0,
+			(entrylo0 & ENTRYLO_G) ? 1 : 0);
 		/* RI/XI are in awkward places, so mask them off separately */
 		pa = entrylo1 & ~(MIPS_ENTRYLO_RI | MIPS_ENTRYLO_XI);
 		if (xpa)
 			pa |= (unsigned long long)readx_c0_entrylo1() << 30;
 		pa = (pa << 6) & PAGE_MASK;
 		if (cpu_has_rixi)
-			printk("ri=%d xi=%d ",
-			       (entrylo1 & MIPS_ENTRYLO_RI) ? 1 : 0,
-			       (entrylo1 & MIPS_ENTRYLO_XI) ? 1 : 0);
-		printk("pa=%0*llx c=%d d=%d v=%d g=%d]\n",
-		       pwidth, pa, c1,
-		       (entrylo1 & ENTRYLO_D) ? 1 : 0,
-		       (entrylo1 & ENTRYLO_V) ? 1 : 0,
-		       (entrylo1 & ENTRYLO_G) ? 1 : 0);
+			pr_cont("ri=%d xi=%d ",
+				(entrylo1 & MIPS_ENTRYLO_RI) ? 1 : 0,
+				(entrylo1 & MIPS_ENTRYLO_XI) ? 1 : 0);
+		pr_cont("pa=%0*llx c=%d d=%d v=%d g=%d]\n",
+			pwidth, pa, c1,
+			(entrylo1 & ENTRYLO_D) ? 1 : 0,
+			(entrylo1 & ENTRYLO_V) ? 1 : 0,
+			(entrylo1 & ENTRYLO_G) ? 1 : 0);
 	}
 	printk("\n");
 

arch/mips/lib/r3k_dump_tlb.c

@@ -53,15 +53,15 @@ static void dump_tlb(int first, int last)
 			 */
 			printk("Index: %2d ", i);
 
-			printk("va=%08lx asid=%08lx"
-			       "  [pa=%06lx n=%d d=%d v=%d g=%d]",
-			       entryhi & PAGE_MASK,
-			       entryhi & asid_mask,
-			       entrylo0 & PAGE_MASK,
-			       (entrylo0 & R3K_ENTRYLO_N) ? 1 : 0,
-			       (entrylo0 & R3K_ENTRYLO_D) ? 1 : 0,
-			       (entrylo0 & R3K_ENTRYLO_V) ? 1 : 0,
-			       (entrylo0 & R3K_ENTRYLO_G) ? 1 : 0);
+			pr_cont("va=%08lx asid=%08lx"
+				"  [pa=%06lx n=%d d=%d v=%d g=%d]",
+				entryhi & PAGE_MASK,
+				entryhi & asid_mask,
+				entrylo0 & PAGE_MASK,
+				(entrylo0 & R3K_ENTRYLO_N) ? 1 : 0,
+				(entrylo0 & R3K_ENTRYLO_D) ? 1 : 0,
+				(entrylo0 & R3K_ENTRYLO_V) ? 1 : 0,
+				(entrylo0 & R3K_ENTRYLO_G) ? 1 : 0);
 		}
 	}
 	printk("\n");