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/* SPDX-License-Identifier: LGPL-2.1 */
/*
* Copyright (C) 2019, VMware, Tzvetomir Stoyanov <tz.stoyanov@gmail.com>
*
*/
#ifndef _TRACE_TSYNC_LOCAL_H
#define _TRACE_TSYNC_LOCAL_H
#include <stdbool.h>
struct tracecmd_time_sync {
pthread_t thread;
bool thread_running;
unsigned long long trace_id;
char *proto_name;
int loop_interval;
pthread_mutex_t lock;
pthread_cond_t cond;
pthread_barrier_t first_sync;
char *clock_str;
struct tracecmd_msg_handle *msg_handle;
void *context;
int guest_pid;
int vcpu_count;
int remote_id;
int local_id;
};
struct clock_sync_offsets {
/* Arrays with calculated time offsets at given time */
int sync_size; /* Allocated size of sync_ts,
* sync_offsets, sync_scalings and sync_frac
*/
int sync_count; /* Number of elements in sync_ts,
* sync_offsets, sync_scalings and sync_frac
*/
long long *sync_ts;
long long *sync_offsets;
long long *sync_scalings;
long long *sync_frac;
};
struct clock_sync_context {
void *proto_data; /* time sync protocol specific data */
bool is_server; /* server side time sync role */
bool is_guest; /* guest or host time sync role */
struct tracefs_instance *instance; /* ftrace buffer, used for time sync events */
int cpu_count;
struct clock_sync_offsets *offsets; /* Array of size cpu_count
* calculated offsets per CPU
*/
/* Identifiers of local and remote time sync peers */
unsigned int local_id;
unsigned int remote_id;
};
int tracecmd_tsync_proto_register(const char *proto_name, int accuracy, int roles,
int supported_clocks, unsigned int flags,
int (*init)(struct tracecmd_time_sync *),
int (*free)(struct tracecmd_time_sync *),
int (*calc)(struct tracecmd_time_sync *,
long long *, long long *, long long*,
long long *, unsigned int));
int tracecmd_tsync_proto_unregister(char *proto_name);
int ptp_clock_sync_register(void);
#ifdef VSOCK
int kvm_clock_sync_register(void);
#else
static inline int kvm_clock_sync_register(void)
{
return 0;
}
#endif
#endif /* _TRACE_TSYNC_LOCAL_H */
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