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94a420b1 SH |
1 | # Trace events for debugging and performance instrumentation |
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 | # | |
1e2cf2bc | 15 | # [disable] <name>(<type1> <arg1>[, <type2> <arg2>] ...) "<format-string>" |
94a420b1 SH |
16 | # |
17 | # Example: qemu_malloc(size_t size) "size %zu" | |
18 | # | |
1e2cf2bc SH |
19 | # The "disable" keyword will build without the trace event. |
20 | # In case of 'simple' trace backend, it will allow the trace event to be | |
21 | # compiled, but this would be turned off by default. It can be toggled on via | |
22 | # the monitor. | |
23 | # | |
94a420b1 SH |
24 | # The <name> must be a valid as a C function name. |
25 | # | |
26 | # Types should be standard C types. Use void * for pointers because the trace | |
27 | # system may not have the necessary headers included. | |
28 | # | |
29 | # The <format-string> should be a sprintf()-compatible format string. | |
cd245a19 SH |
30 | |
31 | # qemu-malloc.c | |
32 | disable qemu_malloc(size_t size, void *ptr) "size %zu ptr %p" | |
33 | disable qemu_realloc(void *ptr, size_t size, void *newptr) "ptr %p size %zu newptr %p" | |
34 | disable qemu_free(void *ptr) "ptr %p" | |
35 | ||
36 | # osdep.c | |
37 | disable qemu_memalign(size_t alignment, size_t size, void *ptr) "alignment %zu size %zu ptr %p" | |
dda85211 | 38 | disable qemu_vmalloc(size_t size, void *ptr) "size %zu ptr %p" |
cd245a19 | 39 | disable qemu_vfree(void *ptr) "ptr %p" |
6d519a5f | 40 | |
64979a4d SH |
41 | # hw/virtio.c |
42 | disable virtqueue_fill(void *vq, const void *elem, unsigned int len, unsigned int idx) "vq %p elem %p len %u idx %u" | |
43 | disable virtqueue_flush(void *vq, unsigned int count) "vq %p count %u" | |
44 | disable virtqueue_pop(void *vq, void *elem, unsigned int in_num, unsigned int out_num) "vq %p elem %p in_num %u out_num %u" | |
45 | disable virtio_queue_notify(void *vdev, int n, void *vq) "vdev %p n %d vq %p" | |
46 | disable virtio_irq(void *vq) "vq %p" | |
47 | disable virtio_notify(void *vdev, void *vq) "vdev %p vq %p" | |
48 | ||
6d519a5f SH |
49 | # block.c |
50 | disable multiwrite_cb(void *mcb, int ret) "mcb %p ret %d" | |
51 | disable bdrv_aio_multiwrite(void *mcb, int num_callbacks, int num_reqs) "mcb %p num_callbacks %d num_reqs %d" | |
52 | disable bdrv_aio_multiwrite_earlyfail(void *mcb) "mcb %p" | |
53 | disable bdrv_aio_multiwrite_latefail(void *mcb, int i) "mcb %p i %d" | |
54 | ||
55 | # hw/virtio-blk.c | |
56 | disable virtio_blk_req_complete(void *req, int status) "req %p status %d" | |
57 | disable virtio_blk_rw_complete(void *req, int ret) "req %p ret %d" | |
58 | disable virtio_blk_handle_write(void *req, unsigned long sector, unsigned long nsectors) "req %p sector %lu nsectors %lu" | |
59 | ||
60 | # posix-aio-compat.c | |
61 | disable paio_submit(void *acb, void *opaque, unsigned long sector_num, unsigned long nb_sectors, unsigned long type) "acb %p opaque %p sector_num %lu nb_sectors %lu type %lu" | |
bd3c9aa5 PS |
62 | |
63 | # ioport.c | |
64 | disable cpu_in(unsigned int addr, unsigned int val) "addr %#x value %u" | |
65 | disable cpu_out(unsigned int addr, unsigned int val) "addr %#x value %u" | |
62dd89de PS |
66 | |
67 | # balloon.c | |
68 | # Since requests are raised via monitor, not many tracepoints are needed. | |
69 | disable balloon_event(void *opaque, unsigned long addr) "opaque %p addr %lu" |