77 lines · c
1/* SPDX-License-Identifier: GPL-2.0 */2#ifndef __TRACE_AGENT_H__3#define __TRACE_AGENT_H__4#include <pthread.h>5#include <stdbool.h>6 7#define MAX_CPUS 2568#define PIPE_INIT (1024*1024)9 10/*11 * agent_info - structure managing total information of guest agent12 * @pipe_size: size of pipe (default 1MB)13 * @use_stdout: set to true when o option is added (default false)14 * @cpus: total number of CPUs15 * @ctl_fd: fd of control path, /dev/virtio-ports/agent-ctl-path16 * @rw_ti: structure managing information of read/write threads17 */18struct agent_info {19 unsigned long pipe_size;20 bool use_stdout;21 int cpus;22 int ctl_fd;23 struct rw_thread_info *rw_ti[MAX_CPUS];24};25 26/*27 * rw_thread_info - structure managing a read/write thread a cpu28 * @cpu_num: cpu number operating this read/write thread29 * @in_fd: fd of reading trace data path in cpu_num30 * @out_fd: fd of writing trace data path in cpu_num31 * @read_pipe: fd of read pipe32 * @write_pipe: fd of write pipe33 * @pipe_size: size of pipe (default 1MB)34 */35struct rw_thread_info {36 int cpu_num;37 int in_fd;38 int out_fd;39 int read_pipe;40 int write_pipe;41 unsigned long pipe_size;42};43 44/* use for stopping rw threads */45extern bool global_sig_receive;46 47/* use for notification */48extern bool global_run_operation;49extern pthread_mutex_t mutex_notify;50extern pthread_cond_t cond_wakeup;51 52/* for controller of read/write threads */53extern int rw_ctl_init(const char *ctl_path);54extern void *rw_ctl_loop(int ctl_fd);55 56/* for trace read/write thread */57extern void *rw_thread_info_new(void);58extern void *rw_thread_init(int cpu, const char *in_path, const char *out_path,59 bool stdout_flag, unsigned long pipe_size,60 struct rw_thread_info *rw_ti);61extern pthread_t rw_thread_run(struct rw_thread_info *rw_ti);62 63static inline void *zalloc(size_t size)64{65 return calloc(1, size);66}67 68#define pr_err(format, ...) fprintf(stderr, format, ## __VA_ARGS__)69#define pr_info(format, ...) fprintf(stdout, format, ## __VA_ARGS__)70#ifdef DEBUG71#define pr_debug(format, ...) fprintf(stderr, format, ## __VA_ARGS__)72#else73#define pr_debug(format, ...) do {} while (0)74#endif75 76#endif /*__TRACE_AGENT_H__*/77