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* [PATCH 4.14] swiotlb: clean up reporting
@ 2018-12-10 17:40 Ben Hutchings
  2018-12-10 18:14 ` [PATCH v2 " Ben Hutchings
  0 siblings, 1 reply; 3+ messages in thread
From: Ben Hutchings @ 2018-12-10 17:40 UTC (permalink / raw)
  To: Greg Kroah-Hartman, Sasha Levin; +Cc: stable

commit 7d63fb3af87aa67aa7d24466e792f9d7c57d8e79 upstream.

This removes needless use of '%p', and refactors the printk calls to
use pr_*() helpers instead.

Signed-off-by: Kees Cook <keescook@chromium.org>
Reviewed-by: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com>
Signed-off-by: Christoph Hellwig <hch@lst.de>
[bwh: Backported to 4.14:
 - Adjust filename
 - Remove "swiotlb: " prefix from an additional log message]
Signed-off-by: Ben Hutchings <ben.hutchings@codethink.co.uk>
---
 lib/swiotlb.c | 20 +++++++++-----------
 1 file changed, 9 insertions(+), 11 deletions(-)

diff --git a/lib/swiotlb.c b/lib/swiotlb.c
index 20df2fd9b150..b4c768de3344 100644
--- a/lib/swiotlb.c
+++ b/lib/swiotlb.c
@@ -17,6 +17,8 @@
  * 08/12/11 beckyb	Add highmem support
  */
 
+#define pr_fmt(fmt) "software IO TLB: " fmt
+
 #include <linux/cache.h>
 #include <linux/dma-mapping.h>
 #include <linux/mm.h>
@@ -177,20 +179,16 @@ static bool no_iotlb_memory;
 void swiotlb_print_info(void)
 {
 	unsigned long bytes = io_tlb_nslabs << IO_TLB_SHIFT;
-	unsigned char *vstart, *vend;
 
 	if (no_iotlb_memory) {
-		pr_warn("software IO TLB: No low mem\n");
+		pr_warn("No low mem\n");
 		return;
 	}
 
-	vstart = phys_to_virt(io_tlb_start);
-	vend = phys_to_virt(io_tlb_end);
-
-	printk(KERN_INFO "software IO TLB [mem %#010llx-%#010llx] (%luMB) mapped at [%p-%p]\n",
+	pr_info("mapped [mem %#010llx-%#010llx] (%luMB)\n",
 	       (unsigned long long)io_tlb_start,
 	       (unsigned long long)io_tlb_end,
-	       bytes >> 20, vstart, vend - 1);
+	       bytes >> 20);
 }
 
 /*
@@ -290,7 +288,7 @@ swiotlb_init(int verbose)
 	if (io_tlb_start)
 		memblock_free_early(io_tlb_start,
 				    PAGE_ALIGN(io_tlb_nslabs << IO_TLB_SHIFT));
-	pr_warn("Cannot allocate SWIOTLB buffer");
+	pr_warn("Cannot allocate buffer");
 	no_iotlb_memory = true;
 }
 
@@ -332,8 +330,8 @@ swiotlb_late_init_with_default_size(size_t default_size)
 		return -ENOMEM;
 	}
 	if (order != get_order(bytes)) {
-		printk(KERN_WARNING "Warning: only able to allocate %ld MB "
-		       "for software IO TLB\n", (PAGE_SIZE << order) >> 20);
+		pr_warn("only able to allocate %ld MB\n",
+			(PAGE_SIZE << order) >> 20);
 		io_tlb_nslabs = SLABS_PER_PAGE << order;
 	}
 	rc = swiotlb_late_init_with_tbl(vstart, io_tlb_nslabs);
@@ -770,7 +768,7 @@ swiotlb_alloc_coherent(struct device *hwdev, size_t size,
 
 err_warn:
 	if (warn && printk_ratelimit()) {
-		pr_warn("swiotlb: coherent allocation failed for device %s size=%zu\n",
+		pr_warn("coherent allocation failed for device %s size=%zu\n",
 			dev_name(hwdev), size);
 		dump_stack();
 	}
-- 
Ben Hutchings, Software Developer                         Codethink Ltd
https://www.codethink.co.uk/                 Dale House, 35 Dale Street
                                     Manchester, M1 2HF, United Kingdom

^ permalink raw reply related	[flat|nested] 3+ messages in thread
* [PATCH v2 4.14] swiotlb: clean up reporting
  2018-12-10 17:40 [PATCH 4.14] swiotlb: clean up reporting Ben Hutchings
@ 2018-12-10 18:14 ` Ben Hutchings
  2018-12-10 22:57   ` Sasha Levin
  0 siblings, 1 reply; 3+ messages in thread
From: Ben Hutchings @ 2018-12-10 18:14 UTC (permalink / raw)
  To: Greg Kroah-Hartman, Sasha Levin; +Cc: stable

From: Kees Cook <keescook@chromium.org>

commit 7d63fb3af87aa67aa7d24466e792f9d7c57d8e79 upstream.

This removes needless use of '%p', and refactors the printk calls to
use pr_*() helpers instead.

Signed-off-by: Kees Cook <keescook@chromium.org>
Reviewed-by: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com>
Signed-off-by: Christoph Hellwig <hch@lst.de>
[bwh: Backported to 4.14:
 - Adjust filename
 - Remove "swiotlb: " prefix from an additional log message]
Signed-off-by: Ben Hutchings <ben.hutchings@codethink.co.uk>
---
v2: restore original author

 lib/swiotlb.c | 20 +++++++++-----------
 1 file changed, 9 insertions(+), 11 deletions(-)

diff --git a/lib/swiotlb.c b/lib/swiotlb.c
index 20df2fd9b150..b4c768de3344 100644
--- a/lib/swiotlb.c
+++ b/lib/swiotlb.c
@@ -17,6 +17,8 @@
  * 08/12/11 beckyb	Add highmem support
  */
 
+#define pr_fmt(fmt) "software IO TLB: " fmt
+
 #include <linux/cache.h>
 #include <linux/dma-mapping.h>
 #include <linux/mm.h>
@@ -177,20 +179,16 @@ static bool no_iotlb_memory;
 void swiotlb_print_info(void)
 {
 	unsigned long bytes = io_tlb_nslabs << IO_TLB_SHIFT;
-	unsigned char *vstart, *vend;
 
 	if (no_iotlb_memory) {
-		pr_warn("software IO TLB: No low mem\n");
+		pr_warn("No low mem\n");
 		return;
 	}
 
-	vstart = phys_to_virt(io_tlb_start);
-	vend = phys_to_virt(io_tlb_end);
-
-	printk(KERN_INFO "software IO TLB [mem %#010llx-%#010llx] (%luMB) mapped at [%p-%p]\n",
+	pr_info("mapped [mem %#010llx-%#010llx] (%luMB)\n",
 	       (unsigned long long)io_tlb_start,
 	       (unsigned long long)io_tlb_end,
-	       bytes >> 20, vstart, vend - 1);
+	       bytes >> 20);
 }
 
 /*
@@ -290,7 +288,7 @@ swiotlb_init(int verbose)
 	if (io_tlb_start)
 		memblock_free_early(io_tlb_start,
 				    PAGE_ALIGN(io_tlb_nslabs << IO_TLB_SHIFT));
-	pr_warn("Cannot allocate SWIOTLB buffer");
+	pr_warn("Cannot allocate buffer");
 	no_iotlb_memory = true;
 }
 
@@ -332,8 +330,8 @@ swiotlb_late_init_with_default_size(size_t default_size)
 		return -ENOMEM;
 	}
 	if (order != get_order(bytes)) {
-		printk(KERN_WARNING "Warning: only able to allocate %ld MB "
-		       "for software IO TLB\n", (PAGE_SIZE << order) >> 20);
+		pr_warn("only able to allocate %ld MB\n",
+			(PAGE_SIZE << order) >> 20);
 		io_tlb_nslabs = SLABS_PER_PAGE << order;
 	}
 	rc = swiotlb_late_init_with_tbl(vstart, io_tlb_nslabs);
@@ -770,7 +768,7 @@ swiotlb_alloc_coherent(struct device *hwdev, size_t size,
 
 err_warn:
 	if (warn && printk_ratelimit()) {
-		pr_warn("swiotlb: coherent allocation failed for device %s size=%zu\n",
+		pr_warn("coherent allocation failed for device %s size=%zu\n",
 			dev_name(hwdev), size);
 		dump_stack();
 	}
-- 
Ben Hutchings, Software Developer                         Codethink Ltd
https://www.codethink.co.uk/                 Dale House, 35 Dale Street
                                     Manchester, M1 2HF, United Kingdom

^ permalink raw reply related	[flat|nested] 3+ messages in thread
* Re: [PATCH v2 4.14] swiotlb: clean up reporting
  2018-12-10 18:14 ` [PATCH v2 " Ben Hutchings
@ 2018-12-10 22:57   ` Sasha Levin
  0 siblings, 0 replies; 3+ messages in thread
From: Sasha Levin @ 2018-12-10 22:57 UTC (permalink / raw)
  To: Ben Hutchings; +Cc: Greg Kroah-Hartman, Sasha Levin, stable

On Mon, Dec 10, 2018 at 06:14:58PM +0000, Ben Hutchings wrote:
>From: Kees Cook <keescook@chromium.org>
>
>commit 7d63fb3af87aa67aa7d24466e792f9d7c57d8e79 upstream.
>
>This removes needless use of '%p', and refactors the printk calls to
>use pr_*() helpers instead.
>
>Signed-off-by: Kees Cook <keescook@chromium.org>
>Reviewed-by: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com>
>Signed-off-by: Christoph Hellwig <hch@lst.de>
>[bwh: Backported to 4.14:
> - Adjust filename
> - Remove "swiotlb: " prefix from an additional log message]
>Signed-off-by: Ben Hutchings <ben.hutchings@codethink.co.uk>

Queued for 4.14, thank you.

--
Thanks,
Sasha

^ permalink raw reply	[flat|nested] 3+ messages in thread
end of thread, other threads:[~2018-12-10 22:58 UTC | newest]

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2018-12-10 17:40 [PATCH 4.14] swiotlb: clean up reporting Ben Hutchings
2018-12-10 18:14 ` [PATCH v2 " Ben Hutchings
2018-12-10 22:57   ` Sasha Levin

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