From: Bing Zhao <bzhao@marvell.com>
To: linux-kernel@vger.kernel.org
Cc: linux-wireless@vger.kernel.org,
"John W. Linville" <linville@tuxdriver.com>,
Johannes Berg <johannes@sipsolutions.net>,
Amitkumar Karwar <akarwar@marvell.com>,
Kiran Divekar <dkiran@marvell.com>,
Frank Huang <frankh@marvell.com>, Bing Zhao <bzhao@marvell.com>
Subject: [RFC] dynamic debug: add dynamic_hexdump_debug macro
Date: Mon, 28 Feb 2011 18:26:11 -0800 [thread overview]
Message-ID: <1298946371-30192-1-git-send-email-bzhao@marvell.com> (raw)
dynamic_hexdump_debug(str, buf, len)
usage:
dynamic_hexdump_debug("mwifiex data: tx_buf:\n", tx_buf, 32);
Signed-off-by: Bing Zhao <bzhao@marvell.com>
---
include/linux/dynamic_debug.h | 22 ++++++++++++++++++++++
include/linux/printk.h | 14 ++++++++++++++
2 files changed, 36 insertions(+), 0 deletions(-)
diff --git a/include/linux/dynamic_debug.h b/include/linux/dynamic_debug.h
index 1c70028..a7296fb 100644
--- a/include/linux/dynamic_debug.h
+++ b/include/linux/dynamic_debug.h
@@ -64,6 +64,19 @@ extern int ddebug_remove_module(const char *mod_name);
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)) { \
+ printk(KERN_DEBUG str); \
+ print_hex_dump_bytes("", DUMP_PREFIX_OFFSET, buf, len); \
+ } \
+} while (0)
+
#else
static inline int ddebug_remove_module(const char *mod)
@@ -75,6 +88,15 @@ 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) { \
+ printk(KERN_DEBUG str); \
+ print_hex_dump_bytes("", DUMP_PREFIX_OFFSET, buf, len); \
+ } \
+} while (0)
+
#endif
#endif
diff --git a/include/linux/printk.h b/include/linux/printk.h
index ee048e7..c758131 100644
--- a/include/linux/printk.h
+++ b/include/linux/printk.h
@@ -299,4 +299,18 @@ static inline void print_hex_dump_bytes(const char *prefix_str, int prefix_type,
#endif
+#if defined(DEBUG)
+#define hexdump_debug(str, buf, len) \
+do { \
+ printk(KERN_DEBUG str); \
+ print_hex_dump_bytes("", DUMP_PREFIX_OFFSET, buf, len); \
+} while (0)
+#elif defined(CONFIG_DYNAMIC_DEBUG)
+#define hexdump_debug(str, buf, len) \
+ dynamic_hexdump_debug(str, buf, len)
+#else
+#define hexdump_debug(str, buf, len) \
+ no_printk(KERN_DEBUG str)
+#endif
+
#endif
--
1.7.0.2
reply other threads:[~2011-03-01 2:35 UTC|newest]
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