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/*
Copyright (C) 2021 The Falco Authors.
This file is dual licensed under either the MIT or GPL 2. See MIT.txt
or GPL2.txt for full copies of the license.
*/
#ifndef PPM_RINGBUFFER_H_
#define PPM_RINGBUFFER_H_
#ifdef __KERNEL__
#include <linux/types.h>
#endif
static const __u32 RING_BUF_SIZE = 8 * 1024 * 1024;
static const __u32 MIN_USERSPACE_READ_SIZE = 128 * 1024;
/*
* This gets mapped to user level, so we want to keep it as clean as possible
*/
struct ppm_ring_buffer_info {
volatile __u32 head;
volatile __u32 tail;
volatile __u64 n_evts; /* Total number of events that were received by the driver. */
volatile __u64 n_drops_buffer; /* Number of dropped events (buffer full). */
volatile __u64 n_drops_pf; /* Number of dropped events (page faults). */
volatile __u64 n_preemptions; /* Number of preemptions. */
volatile __u64 n_context_switches; /* Number of received context switch events. */
};
#endif /* PPM_RINGBUFFER_H_ */
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