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a7e8aae0 KB |
1 | /* |
2 | * Note: This is similar to a very basic setup | |
3 | * of ZBD devices | |
4 | * | |
5 | * Specify fdp=1 (With char devices /dev/ng0n1) | |
6 | */ | |
7 | ||
8 | #include <errno.h> | |
9 | #include <string.h> | |
10 | #include <stdlib.h> | |
11 | #include <unistd.h> | |
a7e8aae0 | 12 | #include "fio.h" |
7d352b12 | 13 | #include "file.h" |
a7e8aae0 KB |
14 | |
15 | #include "pshared.h" | |
16 | #include "fdp.h" | |
17 | ||
18 | static int fdp_ruh_info(struct thread_data *td, struct fio_file *f, | |
19 | struct fio_ruhs_info *ruhs) | |
20 | { | |
21 | int ret = -EINVAL; | |
22 | ||
5a85d6d8 JA |
23 | if (!td->io_ops) { |
24 | log_err("fio: no ops set in fdp init?!\n"); | |
25 | return ret; | |
26 | } | |
27 | ||
28 | if (td->io_ops->fdp_fetch_ruhs) { | |
a7e8aae0 KB |
29 | ret = td->io_ops->fdp_fetch_ruhs(td, f, ruhs); |
30 | if (ret < 0) { | |
31 | td_verror(td, errno, "fdp fetch ruhs failed"); | |
32 | log_err("%s: fdp fetch ruhs failed (%d)\n", | |
33 | f->file_name, errno); | |
34 | } | |
5a85d6d8 | 35 | } else { |
a7e8aae0 KB |
36 | log_err("%s: engine (%s) lacks fetch ruhs\n", |
37 | f->file_name, td->io_ops->name); | |
5a85d6d8 | 38 | } |
a7e8aae0 KB |
39 | |
40 | return ret; | |
41 | } | |
42 | ||
43 | static int init_ruh_info(struct thread_data *td, struct fio_file *f) | |
44 | { | |
45 | struct fio_ruhs_info *ruhs, *tmp; | |
46 | int i, ret; | |
47 | ||
48 | ruhs = scalloc(1, sizeof(*ruhs) + 128 * sizeof(*ruhs->plis)); | |
49 | if (!ruhs) | |
50 | return -ENOMEM; | |
51 | ||
52 | ret = fdp_ruh_info(td, f, ruhs); | |
53 | if (ret) { | |
54 | log_info("fio: ruh info failed for %s (%d)\n", | |
55 | f->file_name, -ret); | |
56 | goto out; | |
57 | } | |
58 | ||
59 | if (ruhs->nr_ruhs > 128) | |
60 | ruhs->nr_ruhs = 128; | |
61 | ||
62 | if (td->o.fdp_nrpli == 0) { | |
63 | f->ruhs_info = ruhs; | |
64 | return 0; | |
65 | } | |
66 | ||
67 | for (i = 0; i < td->o.fdp_nrpli; i++) { | |
68 | if (td->o.fdp_plis[i] > ruhs->nr_ruhs) { | |
69 | ret = -EINVAL; | |
70 | goto out; | |
71 | } | |
72 | } | |
73 | ||
74 | tmp = scalloc(1, sizeof(*tmp) + ruhs->nr_ruhs * sizeof(*tmp->plis)); | |
75 | if (!tmp) { | |
76 | ret = -ENOMEM; | |
77 | goto out; | |
78 | } | |
79 | ||
80 | tmp->nr_ruhs = td->o.fdp_nrpli; | |
81 | for (i = 0; i < td->o.fdp_nrpli; i++) | |
82 | tmp->plis[i] = ruhs->plis[td->o.fdp_plis[i]]; | |
83 | f->ruhs_info = tmp; | |
84 | out: | |
85 | sfree(ruhs); | |
86 | return ret; | |
87 | } | |
88 | ||
89 | int fdp_init(struct thread_data *td) | |
90 | { | |
91 | struct fio_file *f; | |
92 | int i, ret = 0; | |
93 | ||
94 | for_each_file(td, f, i) { | |
95 | ret = init_ruh_info(td, f); | |
96 | if (ret) | |
97 | break; | |
98 | } | |
99 | return ret; | |
100 | } | |
101 | ||
102 | void fdp_free_ruhs_info(struct fio_file *f) | |
103 | { | |
104 | if (!f->ruhs_info) | |
105 | return; | |
106 | sfree(f->ruhs_info); | |
107 | f->ruhs_info = NULL; | |
108 | } | |
109 | ||
110 | void fdp_fill_dspec_data(struct thread_data *td, struct io_u *io_u) | |
111 | { | |
112 | struct fio_file *f = io_u->file; | |
113 | struct fio_ruhs_info *ruhs = f->ruhs_info; | |
114 | int dspec; | |
115 | ||
116 | if (!ruhs || io_u->ddir != DDIR_WRITE) { | |
117 | io_u->dtype = 0; | |
118 | io_u->dspec = 0; | |
119 | return; | |
120 | } | |
121 | ||
122 | dspec = ruhs->plis[ruhs->pli_loc++ % ruhs->nr_ruhs]; | |
123 | io_u->dtype = 2; | |
124 | io_u->dspec = dspec; | |
125 | } |