summaryrefslogtreecommitdiff
path: root/include/linux/dynamic_debug.h
diff options
context:
space:
mode:
authorJeremy Fitzhardinge <jeremy.fitzhardinge@citrix.com>2010-11-16 11:06:22 -0800
committerJeremy Fitzhardinge <jeremy.fitzhardinge@citrix.com>2010-11-16 11:06:22 -0800
commit20b4755e4fbb226eb42951bd40b53fcbce9ef944 (patch)
tree43da70e0b32ee423d3643ecd422821383411ab72 /include/linux/dynamic_debug.h
parent744f9f104ea262de1dc3e29265870c649f0d9473 (diff)
parente53beacd23d9cb47590da6a7a7f6d417b941a994 (diff)
Merge commit 'v2.6.37-rc2' into upstream/xenfs
* commit 'v2.6.37-rc2': (10093 commits) Linux 2.6.37-rc2 capabilities/syslog: open code cap_syslog logic to fix build failure i2c: Sanity checks on adapter registration i2c: Mark i2c_adapter.id as deprecated i2c: Drivers shouldn't include <linux/i2c-id.h> i2c: Delete unused adapter IDs i2c: Remove obsolete cleanup for clientdata include/linux/kernel.h: Move logging bits to include/linux/printk.h Fix gcc 4.5.1 miscompiling drivers/char/i8k.c (again) hwmon: (w83795) Check for BEEP pin availability hwmon: (w83795) Clear intrusion alarm immediately hwmon: (w83795) Read the intrusion state properly hwmon: (w83795) Print the actual temperature channels as sources hwmon: (w83795) List all usable temperature sources hwmon: (w83795) Expose fan control method hwmon: (w83795) Fix fan control mode attributes hwmon: (lm95241) Check validity of input values hwmon: Change mail address of Hans J. Koch PCI: sysfs: fix printk warnings GFS2: Fix inode deallocation race ...
Diffstat (limited to 'include/linux/dynamic_debug.h')
-rw-r--r--include/linux/dynamic_debug.h41
1 files changed, 22 insertions, 19 deletions
diff --git a/include/linux/dynamic_debug.h b/include/linux/dynamic_debug.h
index 52c0da4bdd18..a90b3892074a 100644
--- a/include/linux/dynamic_debug.h
+++ b/include/linux/dynamic_debug.h
@@ -1,6 +1,8 @@
#ifndef _DYNAMIC_DEBUG_H
#define _DYNAMIC_DEBUG_H
+#include <linux/jump_label.h>
+
/* dynamic_printk_enabled, and dynamic_printk_enabled2 are bitmasks in which
* bit n is set to 1 if any modname hashes into the bucket n, 0 otherwise. They
* use independent hash functions, to reduce the chance of false positives.
@@ -22,8 +24,6 @@ struct _ddebug {
const char *function;
const char *filename;
const char *format;
- char primary_hash;
- char secondary_hash;
unsigned int lineno:24;
/*
* The flags field controls the behaviour at the callsite.
@@ -33,6 +33,7 @@ struct _ddebug {
#define _DPRINTK_FLAGS_PRINT (1<<0) /* printk() a message using the format */
#define _DPRINTK_FLAGS_DEFAULT 0
unsigned int flags:8;
+ char enabled;
} __attribute__((aligned(8)));
@@ -42,33 +43,35 @@ int ddebug_add_module(struct _ddebug *tab, unsigned int n,
#if defined(CONFIG_DYNAMIC_DEBUG)
extern int ddebug_remove_module(const char *mod_name);
-#define __dynamic_dbg_enabled(dd) ({ \
- int __ret = 0; \
- if (unlikely((dynamic_debug_enabled & (1LL << DEBUG_HASH)) && \
- (dynamic_debug_enabled2 & (1LL << DEBUG_HASH2)))) \
- if (unlikely(dd.flags)) \
- __ret = 1; \
- __ret; })
-
#define dynamic_pr_debug(fmt, ...) do { \
+ __label__ do_printk; \
+ __label__ out; \
static struct _ddebug descriptor \
__used \
__attribute__((section("__verbose"), aligned(8))) = \
- { KBUILD_MODNAME, __func__, __FILE__, fmt, DEBUG_HASH, \
- DEBUG_HASH2, __LINE__, _DPRINTK_FLAGS_DEFAULT }; \
- if (__dynamic_dbg_enabled(descriptor)) \
- printk(KERN_DEBUG pr_fmt(fmt), ##__VA_ARGS__); \
+ { KBUILD_MODNAME, __func__, __FILE__, fmt, __LINE__, \
+ _DPRINTK_FLAGS_DEFAULT }; \
+ JUMP_LABEL(&descriptor.enabled, do_printk); \
+ goto out; \
+do_printk: \
+ printk(KERN_DEBUG pr_fmt(fmt), ##__VA_ARGS__); \
+out: ; \
} while (0)
#define dynamic_dev_dbg(dev, fmt, ...) do { \
+ __label__ do_printk; \
+ __label__ out; \
static struct _ddebug descriptor \
__used \
__attribute__((section("__verbose"), aligned(8))) = \
- { KBUILD_MODNAME, __func__, __FILE__, fmt, DEBUG_HASH, \
- DEBUG_HASH2, __LINE__, _DPRINTK_FLAGS_DEFAULT }; \
- if (__dynamic_dbg_enabled(descriptor)) \
- dev_printk(KERN_DEBUG, dev, fmt, ##__VA_ARGS__); \
+ { KBUILD_MODNAME, __func__, __FILE__, fmt, __LINE__, \
+ _DPRINTK_FLAGS_DEFAULT }; \
+ JUMP_LABEL(&descriptor.enabled, do_printk); \
+ goto out; \
+do_printk: \
+ dev_printk(KERN_DEBUG, dev, fmt, ##__VA_ARGS__); \
+out: ; \
} while (0)
#else
@@ -80,7 +83,7 @@ static inline int ddebug_remove_module(const char *mod)
#define dynamic_pr_debug(fmt, ...) \
do { if (0) printk(KERN_DEBUG pr_fmt(fmt), ##__VA_ARGS__); } while (0)
-#define dynamic_dev_dbg(dev, format, ...) \
+#define dynamic_dev_dbg(dev, fmt, ...) \
do { if (0) dev_printk(KERN_DEBUG, dev, fmt, ##__VA_ARGS__); } while (0)
#endif