Commit | Line | Data |
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63eba147 JA |
1 | /* |
2 | * blktrace output analysis: generate a timeline & gather statistics | |
3 | * | |
4 | * Copyright (C) 2006 Alan D. Brunelle <Alan.Brunelle@hp.com> | |
5 | * | |
6 | * This program is free software; you can redistribute it and/or modify | |
7 | * it under the terms of the GNU General Public License as published by | |
8 | * the Free Software Foundation; either version 2 of the License, or | |
9 | * (at your option) any later version. | |
10 | * | |
11 | * This program is distributed in the hope that it will be useful, | |
12 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | |
13 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
14 | * GNU General Public License for more details. | |
15 | * | |
16 | * You should have received a copy of the GNU General Public License | |
17 | * along with this program; if not, write to the Free Software | |
18 | * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA | |
19 | * | |
20 | */ | |
21 | #include <stdio.h> | |
63eba147 JA |
22 | #include "globals.h" |
23 | ||
24 | #define N_DEV_HASH 128 | |
25 | #define DEV_HASH(dev) ((MAJOR(dev) ^ MINOR(dev)) & (N_DEV_HASH - 1)) | |
6eb42155 | 26 | struct list_head dev_heads[N_DEV_HASH]; |
63eba147 | 27 | |
69040794 AB |
28 | static inline void *dip_rb_mkhds(void) |
29 | { | |
30 | size_t len = N_IOP_TYPES * sizeof(struct rb_root); | |
31 | return memset(malloc(len), 0, len); | |
32 | } | |
33 | ||
34 | static void __destroy(struct rb_node *n) | |
35 | { | |
36 | if (n) { | |
37 | struct io *iop = rb_entry(n, struct io, rb_node); | |
38 | ||
39 | __destroy(n->rb_left); | |
40 | __destroy(n->rb_right); | |
41 | io_release(iop); | |
42 | } | |
43 | } | |
44 | ||
45 | static void __destroy_heads(struct rb_root *roots) | |
46 | { | |
47 | int i; | |
48 | ||
49 | for (i = 0; i < N_IOP_TYPES; i++) | |
50 | __destroy(roots[i].rb_node); | |
51 | ||
52 | free(roots); | |
53 | } | |
54 | ||
6eb42155 | 55 | void init_dev_heads(void) |
63eba147 JA |
56 | { |
57 | int i; | |
63eba147 JA |
58 | for (i = 0; i < N_DEV_HASH; i++) |
59 | INIT_LIST_HEAD(&dev_heads[i]); | |
60 | } | |
61 | ||
62 | struct d_info *__dip_find(__u32 device) | |
63 | { | |
63eba147 | 64 | struct d_info *dip; |
d76c5b81 | 65 | struct list_head *p; |
63eba147 | 66 | |
63eba147 JA |
67 | __list_for_each(p, &dev_heads[DEV_HASH(device)]) { |
68 | dip = list_entry(p, struct d_info, hash_head); | |
69 | if (device == dip->device) | |
70 | return dip; | |
71 | } | |
72 | ||
73 | return NULL; | |
74 | } | |
75 | ||
52481561 AB |
76 | void __dip_exit(struct d_info *dip) |
77 | { | |
78 | list_del(&dip->all_head); | |
79 | __destroy_heads(dip->heads); | |
80 | region_exit(&dip->regions); | |
c053af42 AB |
81 | seeki_free(dip->seek_handle); |
82 | seeki_free(dip->q2q_handle); | |
83 | aqd_free(dip->aqd_handle); | |
84 | plat_free(dip->q2d_plat_handle); | |
85 | plat_free(dip->q2c_plat_handle); | |
86 | plat_free(dip->d2c_plat_handle); | |
87 | bno_dump_free(dip->bno_dump_handle); | |
88 | unplug_hist_free(dip->up_hist_handle); | |
52481561 | 89 | if (output_all_data) |
c053af42 | 90 | q2d_free(dip->q2d_priv); |
52481561 AB |
91 | if (dip->pit_fp) |
92 | fclose(dip->pit_fp); | |
93 | free(dip); | |
94 | } | |
95 | ||
69040794 AB |
96 | void dip_exit(void) |
97 | { | |
69040794 AB |
98 | struct list_head *p, *q; |
99 | ||
100 | list_for_each_safe(p, q, &all_devs) { | |
52481561 AB |
101 | struct d_info *dip = list_entry(p, struct d_info, all_head); |
102 | __dip_exit(dip); | |
69040794 AB |
103 | } |
104 | } | |
105 | ||
4c48f14e AB |
106 | static inline char *mkhandle(char *str, __u32 device, char *post) |
107 | { | |
108 | int mjr = device >> MINORBITS; | |
109 | int mnr = device & ((1 << MINORBITS) - 1); | |
110 | ||
111 | sprintf(str, "%03d,%03d%s", mjr, mnr, post); | |
112 | return str; | |
113 | } | |
114 | ||
a22df989 AB |
115 | static inline FILE *open_pit(char *str) |
116 | { | |
99bb5ebc | 117 | FILE *fp = my_fopen(str, "w"); |
a22df989 AB |
118 | |
119 | if (fp == NULL) | |
120 | perror(str); | |
121 | ||
122 | return fp; | |
123 | } | |
124 | ||
c053af42 | 125 | struct d_info *dip_alloc(__u32 device, struct io *iop) |
63eba147 JA |
126 | { |
127 | struct d_info *dip = __dip_find(device); | |
128 | ||
129 | if (dip == NULL) { | |
4c48f14e AB |
130 | char str[256]; |
131 | ||
6eb42155 | 132 | dip = malloc(sizeof(struct d_info)); |
2fa934ce | 133 | memset(dip, 0, sizeof(*dip)); |
6eb42155 | 134 | dip->heads = dip_rb_mkhds(); |
69040794 | 135 | region_init(&dip->regions); |
63eba147 JA |
136 | dip->device = device; |
137 | dip->last_q = (__u64)-1; | |
c053af42 AB |
138 | dip->devmap = dev_map_find(device); |
139 | dip->bno_dump_handle = bno_dump_alloc(device); | |
140 | dip->up_hist_handle = unplug_hist_alloc(device); | |
141 | dip->seek_handle = seeki_alloc(mkhandle(str, device, "_d2d")); | |
142 | dip->q2q_handle = seeki_alloc(mkhandle(str, device, "_q2q")); | |
143 | dip->aqd_handle = aqd_alloc(mkhandle(str, device, "_aqd")); | |
e47ada10 | 144 | dip->q2d_plat_handle = |
c053af42 | 145 | plat_alloc(mkhandle(str, device, "_q2d_plat")); |
2baef508 | 146 | dip->q2c_plat_handle = |
c053af42 | 147 | plat_alloc(mkhandle(str, device, "_q2c_plat")); |
2baef508 | 148 | dip->d2c_plat_handle = |
c053af42 AB |
149 | plat_alloc(mkhandle(str, device, "_d2c_plat")); |
150 | latency_alloc(dip); | |
63eba147 | 151 | list_add_tail(&dip->hash_head, &dev_heads[DEV_HASH(device)]); |
6eb42155 | 152 | list_add_tail(&dip->all_head, &all_devs); |
b2822cea | 153 | dip->start_time = BIT_TIME(iop->t.time); |
11997716 | 154 | dip->pre_culling = 1; |
951ea56c | 155 | if (output_all_data) |
c053af42 | 156 | dip->q2d_priv = q2d_alloc(); |
63eba147 | 157 | n_devs++; |
a22df989 AB |
158 | if (per_io_trees) |
159 | dip->pit_fp = open_pit(mkhandle(per_io_trees, | |
160 | device, "_pit.dat")); | |
63eba147 JA |
161 | } |
162 | ||
11997716 AB |
163 | if (dip->pre_culling) { |
164 | if (iop->type == IOP_Q || iop->type == IOP_A) | |
165 | dip->pre_culling = 0; | |
166 | else | |
167 | return NULL; | |
168 | } | |
169 | ||
095181f2 | 170 | iop->linked = dip_rb_ins(dip, iop); |
b2822cea | 171 | dip->end_time = BIT_TIME(iop->t.time); |
c8b0b334 | 172 | |
63eba147 JA |
173 | return dip; |
174 | } | |
6eb42155 | 175 | |
c053af42 | 176 | void iop_rem_dip(struct io *iop) |
6eb42155 | 177 | { |
d76c5b81 AB |
178 | if (iop->linked) { |
179 | dip_rb_rem(iop); | |
180 | iop->linked = 0; | |
181 | } | |
6eb42155 ADB |
182 | } |
183 | ||
8b10aae0 | 184 | void dip_foreach(struct io *iop, enum iop_type type, |
6eb42155 ADB |
185 | void (*fnc)(struct io *iop, struct io *this), int rm_after) |
186 | { | |
187 | if (rm_after) { | |
188 | LIST_HEAD(head); | |
189 | struct io *this; | |
190 | struct list_head *p, *q; | |
191 | ||
192 | dip_rb_fe(iop->dip, type, iop, fnc, &head); | |
193 | list_for_each_safe(p, q, &head) { | |
194 | this = list_entry(p, struct io, f_head); | |
8b10aae0 | 195 | list_del(&this->f_head); |
6eb42155 ADB |
196 | io_release(this); |
197 | } | |
c053af42 | 198 | } else |
6eb42155 ADB |
199 | dip_rb_fe(iop->dip, type, iop, fnc, NULL); |
200 | } | |
201 | ||
095181f2 JA |
202 | void dip_foreach_list(struct io *iop, enum iop_type type, struct list_head *hd) |
203 | { | |
204 | dip_rb_fe(iop->dip, type, iop, NULL, hd); | |
205 | } | |
206 | ||
6eb42155 ADB |
207 | struct io *dip_find_sec(struct d_info *dip, enum iop_type type, __u64 sec) |
208 | { | |
209 | return dip_rb_find_sec(dip, type, sec); | |
210 | } | |
211 | ||
212 | void dip_foreach_out(void (*func)(struct d_info *, void *), void *arg) | |
213 | { | |
214 | if (devices == NULL) { | |
215 | struct list_head *p; | |
216 | __list_for_each(p, &all_devs) | |
217 | func(list_entry(p, struct d_info, all_head), arg); | |
c053af42 | 218 | } else { |
6eb42155 ADB |
219 | int i; |
220 | struct d_info *dip; | |
221 | unsigned int mjr, mnr; | |
222 | char *p = devices; | |
223 | ||
224 | while (p && ((i = sscanf(p, "%u,%u", &mjr, &mnr)) == 2)) { | |
225 | dip = __dip_find((__u32)((mjr << MINORBITS) | mnr)); | |
6eb42155 | 226 | func(dip, arg); |
6eb42155 ADB |
227 | p = strchr(p, ';'); |
228 | if (p) p++; | |
229 | } | |
230 | } | |
231 | } | |
b2822cea AB |
232 | |
233 | void dip_plug(__u32 dev, double cur_time) | |
234 | { | |
235 | struct d_info *dip = __dip_find(dev); | |
236 | ||
237 | if (!dip || dip->is_plugged) return; | |
238 | ||
239 | dip->is_plugged = 1; | |
240 | dip->last_plug = cur_time; | |
241 | } | |
242 | ||
b70a6642 | 243 | void dip_unplug(__u32 dev, double cur_time, __u64 nios_up) |
b2822cea AB |
244 | { |
245 | struct d_info *dip = __dip_find(dev); | |
246 | ||
00a47cd1 AB |
247 | if (dip && dip->is_plugged) { |
248 | dip->nplugs++; | |
249 | dip->plugged_time += (cur_time - dip->last_plug); | |
250 | dip->is_plugged = 0; | |
b70a6642 | 251 | dip->nios_up += nios_up; |
00a47cd1 AB |
252 | } |
253 | } | |
b2822cea | 254 | |
b70a6642 | 255 | void dip_unplug_tm(__u32 dev, __u64 nios_up) |
00a47cd1 AB |
256 | { |
257 | struct d_info *dip = __dip_find(dev); | |
b2822cea | 258 | |
b70a6642 | 259 | if (dip && dip->is_plugged) { |
00a47cd1 | 260 | dip->n_timer_unplugs++; |
b70a6642 AB |
261 | dip->nios_upt += nios_up; |
262 | dip->nplugs_t++; | |
263 | } | |
b2822cea | 264 | } |
52481561 AB |
265 | |
266 | void dip_cleanup(void) | |
267 | { | |
268 | struct list_head *p, *q; | |
269 | ||
270 | list_for_each_safe(p, q, &all_devs) { | |
271 | struct d_info *dip = list_entry(p, struct d_info, all_head); | |
272 | ||
273 | if (dip->n_qs == 0 && dip->n_ds == 0) | |
274 | __dip_exit(dip); | |
275 | } | |
276 | } |