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Merge branch 'core-printk-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip

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* 'core-printk-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip:
  ratelimit: Make suppressed output messages more useful
  printk: Remove ratelimit.h from kernel.h
  ratelimit: Fix/allow use in atomic contexts
  ratelimit: Use per ratelimit context locking
This commit is contained in:
Linus Torvalds
2009-12-05 09:50:22 -08:00
parent 3e72b810e3 5c82871335
commit d0b093a8b5
8 changed files with 62 additions and 38 deletions
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5
include/linux/kernel.h
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@@ -15,7 +15,6 @@
#include <linux/bitops.h>
#include <linux/log2.h>
#include <linux/typecheck.h>
#include <linux/ratelimit.h>
#include <linux/dynamic_debug.h>
#include <asm/byteorder.h>
#include <asm/bug.h>
@@ -241,8 +240,8 @@ asmlinkage int vprintk(const char *fmt, va_list args)
asmlinkage int printk(const char * fmt, ...)
__attribute__ ((format (printf, 1, 2))) __cold;
extern struct ratelimit_state printk_ratelimit_state;
extern int printk_ratelimit(void);
extern int __printk_ratelimit(const char *func);
#define printk_ratelimit() __printk_ratelimit(__func__)
extern bool printk_timed_ratelimit(unsigned long *caller_jiffies,
unsigned int interval_msec);

1
include/linux/net.h
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@@ -358,6 +358,7 @@ static const struct proto_ops name##_ops = { \
#ifdef CONFIG_SYSCTL
#include <linux/sysctl.h>
#include <linux/ratelimit.h>
extern struct ratelimit_state net_ratelimit_state;
#endif

35
include/linux/ratelimit.h
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@@ -1,20 +1,31 @@
#ifndef _LINUX_RATELIMIT_H
#define _LINUX_RATELIMIT_H
#include <linux/param.h>
#define DEFAULT_RATELIMIT_INTERVAL (5 * HZ)
#define DEFAULT_RATELIMIT_BURST 10
#include <linux/param.h>
#include <linux/spinlock_types.h>
#define DEFAULT_RATELIMIT_INTERVAL (5 * HZ)
#define DEFAULT_RATELIMIT_BURST 10
struct ratelimit_state {
int interval;
int burst;
int printed;
int missed;
unsigned long begin;
spinlock_t lock; /* protect the state */
int interval;
int burst;
int printed;
int missed;
unsigned long begin;
};
#define DEFINE_RATELIMIT_STATE(name, interval, burst) \
struct ratelimit_state name = {interval, burst,}
#define DEFINE_RATELIMIT_STATE(name, interval_init, burst_init) \
\
struct ratelimit_state name = { \
.lock = __SPIN_LOCK_UNLOCKED(name.lock), \
.interval = interval_init, \
.burst = burst_init, \
}
extern int __ratelimit(struct ratelimit_state *rs);
#endif
extern int ___ratelimit(struct ratelimit_state *rs, const char *func);
#define __ratelimit(state) ___ratelimit(state, __func__)
#endif /* _LINUX_RATELIMIT_H */