[PATCH] powerpc/mm/slice: Update slice mask printing to use bitmap printing.

From: "Aneesh Kumar K.V" <aneesh.kumar@linux.vnet.ibm.com>
To: benh@kernel.crashing.org, paulus@samba.org, mpe@ellerman.id.au,
	Balbir Singh <bsingharora@gmail.com>
Cc: linuxppc-dev@lists.ozlabs.org,
	"Aneesh Kumar K.V" <aneesh.kumar@linux.vnet.ibm.com>
Subject: [PATCH] powerpc/mm/slice: Update slice mask printing to use bitmap printing.
Date: Mon, 13 Feb 2017 16:40:20 +0530	[thread overview]
Message-ID: <1486984220-12213-1-git-send-email-aneesh.kumar@linux.vnet.ibm.com> (raw)

We now get output like below which is much better.

[    0.935306]  good_mask low_slice: 4-5,9,11-13
[    0.935360]  good_mask high_slice: 0-511
[    0.935385]  mask low_slice: 3-6,8,10-12
[    0.935397]  mask high_slice:

Compared to

[    0.953414]  good_mask:1111111111111111 - 1111111111111.........

I also fixed an error with slice_dbg printing.

Signed-off-by: Aneesh Kumar K.V <aneesh.kumar@linux.vnet.ibm.com>
---
 arch/powerpc/mm/slice.c | 30 +++++++-----------------------
 1 file changed, 7 insertions(+), 23 deletions(-)

diff --git a/arch/powerpc/mm/slice.c b/arch/powerpc/mm/slice.c
index b3f45e413a60..0575897fdbe3 100644
--- a/arch/powerpc/mm/slice.c
+++ b/arch/powerpc/mm/slice.c
@@ -44,29 +44,13 @@ int _slice_debug = 1;
 
 static void slice_print_mask(const char *label, struct slice_mask mask)
 {
-	char	*p, buf[SLICE_NUM_LOW + 3 + SLICE_NUM_HIGH + 1];
-	int	i;
-
 	if (!_slice_debug)
 		return;
-	p = buf;
-	for (i = 0; i < SLICE_NUM_LOW; i++)
-		*(p++) = (mask.low_slices & (1 << i)) ? '1' : '0';
-	*(p++) = ' ';
-	*(p++) = '-';
-	*(p++) = ' ';
-	for (i = 0; i < SLICE_NUM_HIGH; i++) {
-		if (test_bit(i, mask.high_slices))
-			*(p++) = '1';
-		else
-			*(p++) = '0';
-	}
-	*(p++) = 0;
-
-	printk(KERN_DEBUG "%s:%s\n", label, buf);
+	pr_devel("%s low_slice: %*pbl\n", label, (int)SLICE_NUM_LOW, &mask.low_slices);
+	pr_devel("%s high_slice: %*pbl\n", label, (int)SLICE_NUM_HIGH, mask.high_slices);
 }
 
-#define slice_dbg(fmt...) do { if (_slice_debug) pr_debug(fmt); } while(0)
+#define slice_dbg(fmt...) do { if (_slice_debug) pr_devel(fmt); } while (0)
 
 #else
 
@@ -233,8 +217,8 @@ static void slice_convert(struct mm_struct *mm, struct slice_mask mask, int psiz
 	}
 
 	slice_dbg(" lsps=%lx, hsps=%lx\n",
-		  mm->context.low_slices_psize,
-		  mm->context.high_slices_psize);
+		  (unsigned long)mm->context.low_slices_psize,
+		  (unsigned long)mm->context.high_slices_psize);
 
 	spin_unlock_irqrestore(&slice_convert_lock, flags);
 
@@ -678,8 +662,8 @@ void slice_set_user_psize(struct mm_struct *mm, unsigned int psize)
 
 
 	slice_dbg(" lsps=%lx, hsps=%lx\n",
-		  mm->context.low_slices_psize,
-		  mm->context.high_slices_psize);
+		  (unsigned long)mm->context.low_slices_psize,
+		  (unsigned long)mm->context.high_slices_psize);
 
  bail:
 	spin_unlock_irqrestore(&slice_convert_lock, flags);
-- 
2.7.4
