/usr/src/sysdig-0.19.1/ppm_ringbuffer.h is in sysdig-dkms 0.19.1-1build2.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 | /*
Copyright (C) 2013-2014 Draios inc.
This file is part of sysdig.
sysdig is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License version 2 as
published by the Free Software Foundation.
sysdig is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with sysdig. If not, see <http://www.gnu.org/licenses/>.
*/
#ifndef PPM_H_
#define PPM_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_H_ */
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