xref: /qemu/trace-events (revision 27a4a30e) 
1# See docs/devel/tracing.txt for syntax documentation.
2#
3# This file is processed by the tracetool script during the build.
4#
5# To add a new trace event:
6#
7# 1. Choose a name for the trace event.  Declare its arguments and format
8#    string.
9#
10# 2. Call the trace event from code using trace_##name, e.g. multiwrite_cb() ->
11#    trace_multiwrite_cb().  The source file must #include "trace.h".
12#
13# Format of a trace event:
14#
15# [disable] <name>(<type1> <arg1>[, <type2> <arg2>] ...) "<format-string>"
16#
17# Example: g_malloc(size_t size) "size %zu"
18#
19# The "disable" keyword will build without the trace event.
20#
21# The <name> must be a valid as a C function name.
22#
23# Types should be standard C types.  Use void * for pointers because the trace
24# system may not have the necessary headers included.
25#
26# The <format-string> should be a sprintf()-compatible format string.
27
28# ioport.c
29cpu_in(unsigned int addr, char size, unsigned int val) "addr 0x%x(%c) value %u"
30cpu_out(unsigned int addr, char size, unsigned int val) "addr 0x%x(%c) value %u"
31
32# balloon.c
33# Since requests are raised via monitor, not many tracepoints are needed.
34balloon_event(void *opaque, unsigned long addr) "opaque %p addr %lu"
35
36# vl.c
37vm_state_notify(int running, int reason, const char *reason_str) "running %d reason %d (%s)"
38load_file(const char *name, const char *path) "name %s location %s"
39runstate_set(int current_state, const char *current_state_str, int new_state, const char *new_state_str) "current_run_state %d (%s) new_state %d (%s)"
40system_wakeup_request(int reason) "reason=%d"
41qemu_system_shutdown_request(int reason) "reason=%d"
42qemu_system_powerdown_request(void) ""
43
44# dma-helpers.c
45dma_blk_io(void *dbs, void *bs, int64_t offset, bool to_dev) "dbs=%p bs=%p offset=%" PRId64 " to_dev=%d"
46dma_aio_cancel(void *dbs) "dbs=%p"
47dma_complete(void *dbs, int ret, void *cb) "dbs=%p ret=%d cb=%p"
48dma_blk_cb(void *dbs, int ret) "dbs=%p ret=%d"
49dma_map_wait(void *dbs) "dbs=%p"
50
51# exec.c
52find_ram_offset(uint64_t size, uint64_t offset) "size: 0x%" PRIx64 " @ 0x%" PRIx64
53find_ram_offset_loop(uint64_t size, uint64_t candidate, uint64_t offset, uint64_t next, uint64_t mingap) "trying size: 0x%" PRIx64 " @ 0x%" PRIx64 ", offset: 0x%" PRIx64" next: 0x%" PRIx64 " mingap: 0x%" PRIx64
54ram_block_discard_range(const char *rbname, void *hva, size_t length, bool need_madvise, bool need_fallocate, int ret) "%s@%p + 0x%zx: madvise: %d fallocate: %d ret: %d"
55memory_notdirty_write_access(uint64_t vaddr, uint64_t ram_addr, unsigned size) "0x%" PRIx64 " ram_addr 0x%" PRIx64 " size %u"
56memory_notdirty_set_dirty(uint64_t vaddr) "0x%" PRIx64
57
58# memory.c
59memory_region_ops_read(int cpu_index, void *mr, uint64_t addr, uint64_t value, unsigned size) "cpu %d mr %p addr 0x%"PRIx64" value 0x%"PRIx64" size %u"
60memory_region_ops_write(int cpu_index, void *mr, uint64_t addr, uint64_t value, unsigned size) "cpu %d mr %p addr 0x%"PRIx64" value 0x%"PRIx64" size %u"
61memory_region_subpage_read(int cpu_index, void *mr, uint64_t offset, uint64_t value, unsigned size) "cpu %d mr %p offset 0x%"PRIx64" value 0x%"PRIx64" size %u"
62memory_region_subpage_write(int cpu_index, void *mr, uint64_t offset, uint64_t value, unsigned size) "cpu %d mr %p offset 0x%"PRIx64" value 0x%"PRIx64" size %u"
63memory_region_ram_device_read(int cpu_index, void *mr, uint64_t addr, uint64_t value, unsigned size) "cpu %d mr %p addr 0x%"PRIx64" value 0x%"PRIx64" size %u"
64memory_region_ram_device_write(int cpu_index, void *mr, uint64_t addr, uint64_t value, unsigned size) "cpu %d mr %p addr 0x%"PRIx64" value 0x%"PRIx64" size %u"
65flatview_new(void *view, void *root) "%p (root %p)"
66flatview_destroy(void *view, void *root) "%p (root %p)"
67flatview_destroy_rcu(void *view, void *root) "%p (root %p)"
68
69# gdbstub.c
70gdbstub_op_start(const char *device) "Starting gdbstub using device %s"
71gdbstub_op_exiting(uint8_t code) "notifying exit with code=0x%02x"
72gdbstub_op_continue(void) "Continuing all CPUs"
73gdbstub_op_continue_cpu(int cpu_index) "Continuing CPU %d"
74gdbstub_op_stepping(int cpu_index) "Stepping CPU %d"
75gdbstub_op_extra_info(const char *info) "Thread extra info: %s"
76gdbstub_hit_watchpoint(const char *type, int cpu_gdb_index, uint64_t vaddr) "Watchpoint hit, type=\"%s\" cpu=%d, vaddr=0x%" PRIx64 ""
77gdbstub_hit_internal_error(void) "RUN_STATE_INTERNAL_ERROR"
78gdbstub_hit_break(void) "RUN_STATE_DEBUG"
79gdbstub_hit_paused(void) "RUN_STATE_PAUSED"
80gdbstub_hit_shutdown(void) "RUN_STATE_SHUTDOWN"
81gdbstub_hit_io_error(void) "RUN_STATE_IO_ERROR"
82gdbstub_hit_watchdog(void) "RUN_STATE_WATCHDOG"
83gdbstub_hit_unknown(int state) "Unknown run state=0x%x"
84gdbstub_io_reply(const char *message) "Sent: %s"
85gdbstub_io_binaryreply(size_t ofs, const char *line) "0x%04zx: %s"
86gdbstub_io_command(const char *command) "Received: %s"
87gdbstub_io_got_ack(void) "Got ACK"
88gdbstub_io_got_unexpected(uint8_t ch) "Got 0x%02x when expecting ACK/NACK"
89gdbstub_err_got_nack(void) "Got NACK, retransmitting"
90gdbstub_err_garbage(uint8_t ch) "received garbage between packets: 0x%02x"
91gdbstub_err_overrun(void) "command buffer overrun, dropping command"
92gdbstub_err_invalid_repeat(uint8_t ch) "got invalid RLE count: 0x%02x"
93gdbstub_err_invalid_rle(void) "got invalid RLE sequence"
94gdbstub_err_checksum_invalid(uint8_t ch) "got invalid command checksum digit: 0x%02x"
95gdbstub_err_checksum_incorrect(uint8_t expected, uint8_t got) "got command packet with incorrect checksum, expected=0x%02x, received=0x%02x"
96
97# job.c
98job_state_transition(void *job,  int ret, const char *legal, const char *s0, const char *s1) "job %p (ret: %d) attempting %s transition (%s-->%s)"
99job_apply_verb(void *job, const char *state, const char *verb, const char *legal) "job %p in state %s; applying verb %s (%s)"
100job_completed(void *job, int ret) "job %p ret %d"
101
102# job-qmp.c
103qmp_job_cancel(void *job) "job %p"
104qmp_job_pause(void *job) "job %p"
105qmp_job_resume(void *job) "job %p"
106qmp_job_complete(void *job) "job %p"
107qmp_job_finalize(void *job) "job %p"
108qmp_job_dismiss(void *job) "job %p"
109
110
111### Guest events, keep at bottom
112
113
114## vCPU
115
116# trace/control-target.c
117
118# Hot-plug a new virtual (guest) CPU
119#
120# Mode: user, softmmu
121# Targets: all
122vcpu guest_cpu_enter(void)
123
124# trace/control.c
125
126# Hot-unplug a virtual (guest) CPU
127#
128# Mode: user, softmmu
129# Targets: all
130vcpu guest_cpu_exit(void)
131
132# hw/core/cpu.c
133
134# Reset the state of a virtual (guest) CPU
135#
136# Mode: user, softmmu
137# Targets: all
138vcpu guest_cpu_reset(void)
139
140# tcg/tcg-op.c
141
142# @vaddr: Access' virtual address.
143# @info : Access' information (see below).
144#
145# Start virtual memory access (before any potential access violation).
146#
147# Does not include memory accesses performed by devices.
148#
149# Access information can be parsed as:
150#
151# struct mem_info {
152#     uint8_t size_shift : 4; /* interpreted as "1 << size_shift" bytes */
153#     bool    sign_extend: 1; /* sign-extended */
154#     uint8_t endianness : 1; /* 0: little, 1: big */
155#     bool    store      : 1; /* whether it is a store operation */
156#             pad        : 1;
157#     uint8_t mmuidx     : 4; /* mmuidx (softmmu only)  */
158# };
159#
160# Mode: user, softmmu
161# Targets: TCG(all)
162vcpu tcg guest_mem_before(TCGv vaddr, uint16_t info) "info=%d", "vaddr=0x%016"PRIx64" info=%d"
163
164# linux-user/syscall.c
165# bsd-user/syscall.c
166
167# @num: System call number.
168# @arg*: System call argument value.
169#
170# Start executing a guest system call in syscall emulation mode.
171#
172# Mode: user
173# Targets: TCG(all)
174vcpu guest_user_syscall(uint64_t num, uint64_t arg1, uint64_t arg2, uint64_t arg3, uint64_t arg4, uint64_t arg5, uint64_t arg6, uint64_t arg7, uint64_t arg8) "num=0x%016"PRIx64" arg1=0x%016"PRIx64" arg2=0x%016"PRIx64" arg3=0x%016"PRIx64" arg4=0x%016"PRIx64" arg5=0x%016"PRIx64" arg6=0x%016"PRIx64" arg7=0x%016"PRIx64" arg8=0x%016"PRIx64
175
176# @num: System call number.
177# @ret: System call result value.
178#
179# Finish executing a guest system call in syscall emulation mode.
180#
181# Mode: user
182# Targets: TCG(all)
183vcpu guest_user_syscall_ret(uint64_t num, uint64_t ret) "num=0x%016"PRIx64" ret=0x%016"PRIx64
184