Commit | Line | Data |
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5f350952 JA |
1 | #include "../fio.h" |
2 | #include "../os.h" | |
2866c82d | 3 | |
ba0fbe10 JA |
4 | static int fio_cpuio_queue(struct thread_data *td, struct io_u fio_unused *io_u) |
5 | { | |
6 | __usec_sleep(td->cpucycle); | |
7 | return FIO_Q_COMPLETED; | |
8 | } | |
9 | ||
ea2877a4 JA |
10 | static int fio_cpuio_setup(struct thread_data fio_unused *td) |
11 | { | |
ba0fbe10 JA |
12 | struct fio_file *f; |
13 | int i; | |
14 | ||
15 | td->total_file_size = -1; | |
16 | td->io_size = td->total_file_size; | |
17 | td->total_io_size = td->io_size; | |
18 | ||
19 | for_each_file(td, f, i) { | |
20 | f->real_file_size = -1; | |
21 | f->file_size = -1; | |
22 | } | |
23 | ||
ea2877a4 JA |
24 | return 0; |
25 | } | |
26 | ||
2866c82d JA |
27 | static int fio_cpuio_init(struct thread_data *td) |
28 | { | |
29 | if (!td->cpuload) { | |
ba0fbe10 | 30 | td_vmsg(td, EINVAL, "cpu thread needs rate (cpuload=)","cpuio"); |
2866c82d | 31 | return 1; |
ba0fbe10 JA |
32 | } |
33 | ||
34 | if (td->cpuload > 100) | |
2866c82d JA |
35 | td->cpuload = 100; |
36 | ||
ba0fbe10 JA |
37 | /* |
38 | * set thinktime_sleep and thinktime_spin appropriately | |
39 | */ | |
40 | td->thinktime_blocks = 1; | |
41 | td->thinktime_spin = 0; | |
42 | td->thinktime = (td->cpucycle * (100 - td->cpuload)) / td->cpuload; | |
2866c82d | 43 | |
ba0fbe10 JA |
44 | td->nr_files = td->open_files = 1; |
45 | return 0; | |
46 | } | |
47 | ||
48 | static int fio_cpuio_open(struct thread_data fio_unused *td, struct fio_file *f) | |
49 | { | |
50 | f->fd = 0; | |
2866c82d JA |
51 | return 0; |
52 | } | |
53 | ||
5f350952 | 54 | static struct ioengine_ops ioengine = { |
2866c82d JA |
55 | .name = "cpuio", |
56 | .version = FIO_IOOPS_VERSION, | |
ba0fbe10 | 57 | .queue = fio_cpuio_queue, |
2866c82d | 58 | .init = fio_cpuio_init, |
ea2877a4 | 59 | .setup = fio_cpuio_setup, |
ba0fbe10 JA |
60 | .open_file = fio_cpuio_open, |
61 | .flags = FIO_SYNCIO | FIO_DISKLESSIO, | |
2866c82d | 62 | }; |
5f350952 JA |
63 | |
64 | static void fio_init fio_cpuio_register(void) | |
65 | { | |
66 | register_ioengine(&ioengine); | |
67 | } | |
68 | ||
69 | static void fio_exit fio_cpuio_unregister(void) | |
70 | { | |
71 | unregister_ioengine(&ioengine); | |
72 | } |