1 /* 2 * CDDL HEADER START 3 * 4 * This file and its contents are supplied under the terms of the 5 * Common Development and Distribution License ("CDDL"), version 1.0. 6 * You may only use this file in accordance with the terms of version 7 * 1.0 of the CDDL. 8 * 9 * A full copy of the text of the CDDL should have accompanied this 10 * source. A copy of the CDDL is also available via the Internet at 11 * http://www.illumos.org/license/CDDL. 12 * 13 * CDDL HEADER END 14 */ 15 16 /* 17 * Copyright (c) 2016, Lawrence Livermore National Security, LLC. 18 */ 19 20 #ifndef _SYS_ZFS_RATELIMIT_H 21 #define _SYS_ZFS_RATELIMIT_H 22 23 #include <sys/zfs_context.h> 24 25 typedef struct { 26 hrtime_t start; 27 unsigned int count; 28 29 /* 30 * Pointer to number of events per interval. We do this to 31 * allow the burst to be a (changeable) module parameter. 32 */ 33 unsigned int *burst; 34 35 unsigned int interval; /* Interval length in seconds */ 36 kmutex_t lock; 37 } zfs_ratelimit_t; 38 39 int zfs_ratelimit(zfs_ratelimit_t *rl); 40 void zfs_ratelimit_init(zfs_ratelimit_t *rl, unsigned int *burst, 41 unsigned int interval); 42 void zfs_ratelimit_fini(zfs_ratelimit_t *rl); 43 44 #endif /* _SYS_ZFS_RATELIMIT_H */ 45