ratelimit: add ratelimit_state_init() (f40c396a) · Commits · 戴 / test

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>

include/linux/ratelimit.h

+12 −1

Original line number	Diff line number	Diff line
		@@ -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__)

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