717115e1a5
All ratelimit user use same jiffies and burst params, so some messages (callbacks) will be lost. For example: a call printk_ratelimit(5 * HZ, 1) b call printk_ratelimit(5 * HZ, 1) before the 5*HZ timeout of a, then b will will be supressed. - rewrite __ratelimit, and use a ratelimit_state as parameter. Thanks for hints from andrew. - Add WARN_ON_RATELIMIT, update rcupreempt.h - remove __printk_ratelimit - use __ratelimit in net_ratelimit Signed-off-by: Dave Young <hidave.darkstar@gmail.com> Cc: "David S. Miller" <davem@davemloft.net> Cc: "Paul E. McKenney" <paulmck@us.ibm.com> Cc: Dave Young <hidave.darkstar@gmail.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
28 lines
592 B
C
28 lines
592 B
C
#ifndef _LINUX_RATELIMIT_H
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#define _LINUX_RATELIMIT_H
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#include <linux/param.h>
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#define DEFAULT_RATELIMIT_INTERVAL (5 * HZ)
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#define DEFAULT_RATELIMIT_BURST 10
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struct ratelimit_state {
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int interval;
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int burst;
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int printed;
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int missed;
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unsigned long begin;
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};
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#define DEFINE_RATELIMIT_STATE(name, interval, burst) \
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struct ratelimit_state name = {interval, burst,}
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extern int __ratelimit(struct ratelimit_state *rs);
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static inline int ratelimit(void)
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{
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static DEFINE_RATELIMIT_STATE(rs, DEFAULT_RATELIMIT_INTERVAL,
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DEFAULT_RATELIMIT_BURST);
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return __ratelimit(&rs);
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}
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#endif
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