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- /* SPDX-License-Identifier: GPL-2.0-only */
- /*
- * Copyright (c) 2016-2017, 2020 The Linux Foundation. All rights reserved.
- * Copyright (c) 2022-2023, Qualcomm Innovation Center, Inc. All rights reserved.
- */
- #ifndef __STORM_WATCH_H
- #define __STORM_WATCH_H
- #include <linux/ktime.h>
- #include <linux/mutex.h>
- /**
- * Data used to track an event storm.
- *
- * @storm_period_ms: The maximum time interval between two events. If this limit
- * is exceeded then the event chain will be broken and removed
- * from consideration for a storm.
- * @max_storm_count: The number of chained events required to trigger a storm.
- * @storm_count: The current number of chained events.
- * @last_kt: Kernel time of the last event seen.
- * @storm_lock: Mutex lock to protect storm_watch data.
- */
- struct storm_watch {
- bool enabled;
- int storm_period_ms;
- int max_storm_count;
- int storm_count;
- ktime_t last_kt;
- struct mutex storm_lock;
- };
- bool is_storming(struct storm_watch *data);
- void reset_storm_count(struct storm_watch *data);
- void update_storm_count(struct storm_watch *data, int max_count);
- #endif
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