[PATCH v2 1/1] lib/vsnprintf: Add %par specifier for sake of consistency

From: Andy Shevchenko
Date: Wed Jan 11 2017 - 11:29:55 EST


While resource_size_t is repeating phys_addr_t, allocate %par specifier for
that type for sake of consistency.

Signed-off-by: Andy Shevchenko <andriy.shevchenko@xxxxxxxxxxxxxxx>
---
In v2:
- rebase on top of latest linux-next
- include more people to Cc list
Documentation/printk-formats.txt | 13 ++++++++++---
lib/vsprintf.c | 11 +++++++++--
2 files changed, 19 insertions(+), 5 deletions(-)

diff --git a/Documentation/printk-formats.txt b/Documentation/printk-formats.txt
index 5962949944fd..d8c40c30118a 100644
--- a/Documentation/printk-formats.txt
+++ b/Documentation/printk-formats.txt
@@ -79,9 +79,16 @@ Physical addresses types phys_addr_t:

%pa[p] 0x01234567 or 0x0123456789abcdef

- For printing a phys_addr_t type (and its derivatives, such as
- resource_size_t) which can vary based on build options, regardless of
- the width of the CPU data path. Passed by reference.
+ For printing a phys_addr_t type which can vary based on build options,
+ regardless of the width of the CPU data path. Passed by reference.
+
+Resource size types resource_size_t:
+
+ %par 0x01234567 or 0x0123456789abcdef
+
+ For printing a resource_size_t type which can vary based on build
+ options, regardless of the width of the CPU data path. Passed by
+ reference.

DMA addresses types dma_addr_t:

diff --git a/lib/vsprintf.c b/lib/vsprintf.c
index c771444f3ae4..ca2b32adc124 100644
--- a/lib/vsprintf.c
+++ b/lib/vsprintf.c
@@ -1370,6 +1370,10 @@ char *address_val(char *buf, char *end, const void *addr, const char *fmt)
num = *(const dma_addr_t *)addr;
size = sizeof(dma_addr_t);
break;
+ case 'r':
+ num = *(const resource_size_t *)addr;
+ size = sizeof(resource_size_t);
+ break;
case 'p':
default:
num = *(const phys_addr_t *)addr;
@@ -1545,8 +1549,11 @@ int kptr_restrict __read_mostly;
* N no separator
* The maximum supported length is 64 bytes of the input. Consider
* to use print_hex_dump() for the larger input.
- * - 'a[pd]' For address types [p] phys_addr_t, [d] dma_addr_t and derivatives
- * (default assumed to be phys_addr_t, passed by reference)
+ * - 'a[dpr]' For address types (default assumed to be phys_addr_t, passed by
+ * reference):
+ * [d] dma_addr_t
+ * [p] phys_addr_t
+ * [r] resource_size_t
* - 'd[234]' For a dentry name (optionally 2-4 last components)
* - 'D[234]' Same as 'd' but for a struct file
* - 'g' For block_device name (gendisk + partition number)
--
2.11.0