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https://github.com/projectacrn/acrn-hypervisor.git
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d85a0b70ed
If module acrn_trace is configured as "m" and we don't insert it before launching acrntrace tool, acrntrace will run normally instead of throw out an error in current implementation. And no trace files are generated. It will cause confusing here. So, this patch throw out an error massage to user about the absence of acrn trace devices. BTW, this patch replaces cpuid/num related concept to devid/cnt which is more suitable for /dev/acrn_trace_xxx. Tracked-On: #1975 Signed-off-by: Kaige Fu <kaige.fu@intel.com> Acked-by: Yan, Like <like.yan@intel.com>
87 lines
1.9 KiB
C
87 lines
1.9 KiB
C
/*
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* Copyright (C) 2018 Intel Corporation. All rights reserved.
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*
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* SPDX-License-Identifier: BSD-3-Clause
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*/
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#include "sbuf.h"
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#define PCPU_NUM 4
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#define TRACE_ELEMENT_SIZE 32 /* byte */
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#define TRACE_ELEMENT_NUM ((4 * 1024 * 1024 - 64) / TRACE_ELEMENT_SIZE)
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#define PAGE_SIZE 4096
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#define PAGE_MASK (~(PAGE_SIZE - 1))
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#define MMAP_SIZE (4 * 1024 * 1024)
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/*
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#define MMAP_SIZE ((TRACE_ELEMENT_SIZE * TRACE_ELEMENT_NUM \
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+ PAGE_SIZE - 1) & PAGE_MASK)
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*/
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#define TRACE_FILE_NAME_LEN 32
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#define TRACE_FILE_DIR_LEN (TRACE_FILE_NAME_LEN - 3)
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#define TRACE_FILE_ROOT "acrntrace/"
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#define DEV_PATH_LEN 18
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#define TIME_STR_LEN 16
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#define CMD_MAX_LEN 48
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#define pr_fmt(fmt) "acrntrace: " fmt
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#define pr_info(fmt, ...) printf(pr_fmt(fmt), ##__VA_ARGS__)
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#define pr_err(fmt, ...) printf(pr_fmt(fmt), ##__VA_ARGS__)
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#ifdef DEBUG
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#define pr_dbg(fmt, ...) printf(pr_fmt(fmt), ##__VA_ARGS__)
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#else
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#define pr_dbg(fmt, ...)
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#endif
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/*
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* flags:
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* FLAG_TO_REL - resources need to be release
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* FLAG_CLEAR_BUF - to clear buffered old data
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*/
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#define FLAG_TO_REL (1UL << 0)
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#define FLAG_CLEAR_BUF (1UL << 1)
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#define foreach_dev(dev_id) \
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for ((dev_id) = 0; (dev_id) < (dev_cnt); (dev_id)++)
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typedef unsigned char uint8_t;
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typedef unsigned int uint32_t;
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typedef unsigned long uint64_t;
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typedef struct {
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uint64_t tsc;
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uint64_t id;
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union {
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struct {
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uint32_t a, b, c, d;
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};
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struct {
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uint8_t a1, a2, a3, a4;
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uint8_t b1, b2, b3, b4;
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uint8_t c1, c2, c3, c4;
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uint8_t d1, d2, d3, d4;
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};
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struct {
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uint64_t e;
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uint64_t f;
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};
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char str[16];
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};
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} trace_ev_t;
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typedef struct {
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uint32_t devid;
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int exit_flag;
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int trace_fd;
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shared_buf_t *sbuf;
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pthread_mutex_t *sbuf_lock;
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} param_t;
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typedef struct {
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int dev_fd;
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char dev_name[DEV_PATH_LEN];
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pthread_t thrd;
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param_t param;
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} reader_struct;
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