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Subject[RFC v3 1/2] dynamic debug: add dynamic_hexdump_debug macro
Date
dynamic_hexdump_debug(str, buf, len)

str: "prefix string"
buf: buffer pointer
len: length of the buffer being printed

Signed-off-by: Bing Zhao <bzhao@marvell.com>
---
v3: use "str" as prefix string (Joe Perches)
v2: rebase against linux-next.git tree and split into 2 patches

include/linux/dynamic_debug.h | 14 ++++++++++++++
1 files changed, 14 insertions(+), 0 deletions(-)

diff --git a/include/linux/dynamic_debug.h b/include/linux/dynamic_debug.h
index 0c9653f..06a7fed 100644
--- a/include/linux/dynamic_debug.h
+++ b/include/linux/dynamic_debug.h
@@ -70,6 +70,17 @@ extern int __dynamic_pr_debug(struct _ddebug *descriptor, const char *fmt, ...)
dev_printk(KERN_DEBUG, dev, fmt, ##__VA_ARGS__); \
} while (0)

+#define dynamic_hexdump_debug(str, buf, len) \
+do { \
+ static struct _ddebug descriptor \
+ __used \
+ __attribute__((section("__verbose"), aligned(8))) = \
+ { KBUILD_MODNAME, __func__, __FILE__, str, __LINE__, \
+ _DPRINTK_FLAGS_DEFAULT }; \
+ if (unlikely(descriptor.enabled)) \
+ print_hex_dump_bytes(str, DUMP_PREFIX_OFFSET, buf, len);\
+} while (0)
+
#else

static inline int ddebug_remove_module(const char *mod)
@@ -81,6 +92,9 @@ static inline int ddebug_remove_module(const char *mod)
do { if (0) printk(KERN_DEBUG pr_fmt(fmt), ##__VA_ARGS__); } while (0)
#define dynamic_dev_dbg(dev, fmt, ...) \
do { if (0) dev_printk(KERN_DEBUG, dev, fmt, ##__VA_ARGS__); } while (0)
+#define dynamic_hexdump_debug(str, buf, len) \
+ do { if (0) print_hex_dump_bytes(str, DUMP_PREFIX_OFFSET, \
+ buf, len); } while (0)
#endif

#endif
--
1.6.2.5


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