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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>
This commit is contained in:
OGAWA Hirofumi 2010-05-24 14:33:11 -07:00 committed by Linus Torvalds
parent d8521fcc5e
commit f40c396a9a
1 changed files with 12 additions and 1 deletions
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13
include/linux/ratelimit.h
View File

@ -2,7 +2,7 @@
#define _LINUX_RATELIMIT_H
#include <linux/param.h>
#include <linux/spinlock_types.h>
#include <linux/spinlock.h>
#define DEFAULT_RATELIMIT_INTERVAL (5 * HZ)
#define DEFAULT_RATELIMIT_BURST 10
@ -25,6 +25,17 @@ struct ratelimit_state {
.burst = burst_init, \
}
static inline void ratelimit_state_init(struct ratelimit_state *rs,
int interval, int burst)
{
spin_lock_init(&rs->lock);
rs->interval = interval;
rs->burst = burst;
rs->printed = 0;
rs->missed = 0;
rs->begin = 0;
}
extern int ___ratelimit(struct ratelimit_state *rs, const char *func);
#define __ratelimit(state) ___ratelimit(state, __func__)