diff options
Diffstat (limited to 'c_src/linux/ratelimit.c')
-rw-r--r-- | c_src/linux/ratelimit.c | 69 |
1 files changed, 0 insertions, 69 deletions
diff --git a/c_src/linux/ratelimit.c b/c_src/linux/ratelimit.c deleted file mode 100644 index 21a6d6c8..00000000 --- a/c_src/linux/ratelimit.c +++ /dev/null @@ -1,69 +0,0 @@ -// SPDX-License-Identifier: GPL-2.0-only -/* - * ratelimit.c - Do something with rate limit. - * - * Isolated from kernel/printk.c by Dave Young <hidave.darkstar@gmail.com> - * - * 2008-05-01 rewrite the function and use a ratelimit_state data struct as - * parameter. Now every user can use their own standalone ratelimit_state. - */ - -#include <linux/ratelimit.h> -#include <linux/jiffies.h> -#include <linux/export.h> - -/* - * __ratelimit - rate limiting - * @rs: ratelimit_state data - * @func: name of calling function - * - * This enforces a rate limit: not more than @rs->burst callbacks - * in every @rs->interval - * - * RETURNS: - * 0 means callbacks will be suppressed. - * 1 means go ahead and do it. - */ -int ___ratelimit(struct ratelimit_state *rs, const char *func) -{ - int ret; - - if (!rs->interval) - return 1; - - /* - * If we contend on this state's lock then almost - * by definition we are too busy to print a message, - * in addition to the one that will be printed by - * the entity that is holding the lock already: - */ - if (!raw_spin_trylock(&rs->lock)) - return 0; - - if (!rs->begin) - rs->begin = jiffies; - - if (time_is_before_jiffies(rs->begin + rs->interval)) { - if (rs->missed) { - if (!(rs->flags & RATELIMIT_MSG_ON_RELEASE)) { - printk(KERN_WARNING - "%s: %d callbacks suppressed\n", - func, rs->missed); - rs->missed = 0; - } - } - rs->begin = jiffies; - rs->printed = 0; - } - if (rs->burst && rs->burst > rs->printed) { - rs->printed++; - ret = 1; - } else { - rs->missed++; - ret = 0; - } - raw_spin_unlock(&rs->lock); - - return ret; -} -EXPORT_SYMBOL(___ratelimit); |