ratelimit: add ratelimit_state_init()
For now, all users of ratelimit_state allocates it statically, so DEFINE_RATELIMIT_STATE() is enough. But, I want to use ratelimit_state for fs, i.e. per super_block to suppress too many error reports. So, this adds ratelimit_state_init() to initialize ratelimite_state which is dynamically allocated, instead of opencoding. Signed-off-by: OGAWA Hirofumi <hirofumi@mail.parknet.co.jp> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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@ -2,7 +2,7 @@
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#define _LINUX_RATELIMIT_H
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#include <linux/param.h>
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#include <linux/spinlock_types.h>
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#include <linux/spinlock.h>
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#define DEFAULT_RATELIMIT_INTERVAL (5 * HZ)
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#define DEFAULT_RATELIMIT_BURST 10
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@ -25,6 +25,17 @@ struct ratelimit_state {
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.burst = burst_init, \
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}
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static inline void ratelimit_state_init(struct ratelimit_state *rs,
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int interval, int burst)
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{
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spin_lock_init(&rs->lock);
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rs->interval = interval;
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rs->burst = burst;
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rs->printed = 0;
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rs->missed = 0;
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rs->begin = 0;
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}
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extern int ___ratelimit(struct ratelimit_state *rs, const char *func);
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#define __ratelimit(state) ___ratelimit(state, __func__)
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