projects / fio.git / blame
| Commit | Line | Data |
|---|---|---|
| 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> | |
| 12 | #include "file.h" | |
| 13 | #include "fio.h" | |
| 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 | ||
| 23 | if (td->io_ops && td->io_ops->fdp_fetch_ruhs) { | |
| 24 | ret = td->io_ops->fdp_fetch_ruhs(td, f, ruhs); | |
| 25 | if (ret < 0) { | |
| 26 | td_verror(td, errno, "fdp fetch ruhs failed"); | |
| 27 | log_err("%s: fdp fetch ruhs failed (%d)\n", | |
| 28 | f->file_name, errno); | |
| 29 | } | |
| 30 | } else | |
| 31 | log_err("%s: engine (%s) lacks fetch ruhs\n", | |
| 32 | f->file_name, td->io_ops->name); | |
| 33 | ||
| 34 | return ret; | |
| 35 | } | |
| 36 | ||
| 37 | static int init_ruh_info(struct thread_data *td, struct fio_file *f) | |
| 38 | { | |
| 39 | struct fio_ruhs_info *ruhs, *tmp; | |
| 40 | int i, ret; | |
| 41 | ||
| 42 | ruhs = scalloc(1, sizeof(*ruhs) + 128 * sizeof(*ruhs->plis)); | |
| 43 | if (!ruhs) | |
| 44 | return -ENOMEM; | |
| 45 | ||
| 46 | ret = fdp_ruh_info(td, f, ruhs); | |
| 47 | if (ret) { | |
| 48 | log_info("fio: ruh info failed for %s (%d)\n", | |
| 49 | f->file_name, -ret); | |
| 50 | goto out; | |
| 51 | } | |
| 52 | ||
| 53 | if (ruhs->nr_ruhs > 128) | |
| 54 | ruhs->nr_ruhs = 128; | |
| 55 | ||
| 56 | if (td->o.fdp_nrpli == 0) { | |
| 57 | f->ruhs_info = ruhs; | |
| 58 | return 0; | |
| 59 | } | |
| 60 | ||
| 61 | for (i = 0; i < td->o.fdp_nrpli; i++) { | |
| 62 | if (td->o.fdp_plis[i] > ruhs->nr_ruhs) { | |
| 63 | ret = -EINVAL; | |
| 64 | goto out; | |
| 65 | } | |
| 66 | } | |
| 67 | ||
| 68 | tmp = scalloc(1, sizeof(*tmp) + ruhs->nr_ruhs * sizeof(*tmp->plis)); | |
| 69 | if (!tmp) { | |
| 70 | ret = -ENOMEM; | |
| 71 | goto out; | |
| 72 | } | |
| 73 | ||
| 74 | tmp->nr_ruhs = td->o.fdp_nrpli; | |
| 75 | for (i = 0; i < td->o.fdp_nrpli; i++) | |
| 76 | tmp->plis[i] = ruhs->plis[td->o.fdp_plis[i]]; | |
| 77 | f->ruhs_info = tmp; | |
| 78 | out: | |
| 79 | sfree(ruhs); | |
| 80 | return ret; | |
| 81 | } | |
| 82 | ||
| 83 | int fdp_init(struct thread_data *td) | |
| 84 | { | |
| 85 | struct fio_file *f; | |
| 86 | int i, ret = 0; | |
| 87 | ||
| 88 | for_each_file(td, f, i) { | |
| 89 | ret = init_ruh_info(td, f); | |
| 90 | if (ret) | |
| 91 | break; | |
| 92 | } | |
| 93 | return ret; | |
| 94 | } | |
| 95 | ||
| 96 | void fdp_free_ruhs_info(struct fio_file *f) | |
| 97 | { | |
| 98 | if (!f->ruhs_info) | |
| 99 | return; | |
| 100 | sfree(f->ruhs_info); | |
| 101 | f->ruhs_info = NULL; | |
| 102 | } | |
| 103 | ||
| 104 | void fdp_fill_dspec_data(struct thread_data *td, struct io_u *io_u) | |
| 105 | { | |
| 106 | struct fio_file *f = io_u->file; | |
| 107 | struct fio_ruhs_info *ruhs = f->ruhs_info; | |
| 108 | int dspec; | |
| 109 | ||
| 110 | if (!ruhs || io_u->ddir != DDIR_WRITE) { | |
| 111 | io_u->dtype = 0; | |
| 112 | io_u->dspec = 0; | |
| 113 | return; | |
| 114 | } | |
| 115 | ||
| 116 | dspec = ruhs->plis[ruhs->pli_loc++ % ruhs->nr_ruhs]; | |
| 117 | io_u->dtype = 2; | |
| 118 | io_u->dspec = dspec; | |
| 119 | } |