projects / blktrace.git / blame
| Commit | Line | Data |
|---|---|---|
| 095181f2 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 "globals.h" | |
| 22 | ||
| d76c5b81 | 23 | static inline void __update_q2c(struct io *q_iop, struct io *c_iop) |
| 095181f2 | 24 | { |
| d76c5b81 | 25 | __u64 q2c = tdelta(q_iop, c_iop); |
| 095181f2 | 26 | |
| d76c5b81 AB |
27 | update_q2c(q_iop, q2c); |
| 28 | latency_q2c(q_iop->dip, q_iop->t.time, q2c); | |
| 095181f2 JA |
29 | } |
| 30 | ||
| c8b0b334 AB |
31 | void run_queue(struct io *q_iop, __attribute__((__unused__))struct io *u_iop, |
| 32 | struct io *c_iop) | |
| 095181f2 | 33 | { |
| d76c5b81 AB |
34 | struct bilink *blp; |
| 35 | struct io *a_iop = bilink_first_down(q_iop, &blp); | |
| 095181f2 JA |
36 | |
| 37 | if (a_iop) { | |
| c8b0b334 | 38 | run_remap(a_iop, q_iop, c_iop); |
| d76c5b81 | 39 | biunlink(blp); |
| 095181f2 JA |
40 | } |
| 41 | ||
| d76c5b81 AB |
42 | __update_q2c(q_iop, c_iop); |
| 43 | dump_iop(q_iop, 0); | |
| c8b0b334 | 44 | add_rmhd(q_iop); |
| 095181f2 JA |
45 | } |
| 46 | ||
| d76c5b81 | 47 | int ready_queue(struct io *q_iop, struct io *c_iop) |
| 095181f2 | 48 | { |
| d76c5b81 | 49 | struct io *a_iop; |
| 095181f2 | 50 | |
| d76c5b81 AB |
51 | if (!list_empty(&q_iop->down_list)) |
| 52 | return 1; | |
| 095181f2 | 53 | |
| d76c5b81 AB |
54 | a_iop = dip_find_sec(q_iop->dip, IOP_A, BIT_START(q_iop)); |
| 55 | if (!a_iop) | |
| 56 | return 1; | |
| 095181f2 | 57 | |
| d76c5b81 AB |
58 | if (!ready_remap(a_iop, c_iop)) |
| 59 | return 0; | |
| 095181f2 | 60 | |
| d76c5b81 AB |
61 | ASSERT(q_iop->t.bytes == a_iop->t.bytes); |
| 62 | bilink(a_iop, q_iop); | |
| 63 | dip_rem(a_iop); | |
| 64 | return 1; | |
| 095181f2 JA |
65 | } |
| 66 | ||
| d76c5b81 | 67 | void trace_queue(struct io *q_iop) |
| 095181f2 | 68 | { |
| d76c5b81 AB |
69 | if (io_setup(q_iop, IOP_Q)) { |
| 70 | update_lq(&last_q, &all_avgs.q2q, q_iop->t.time); | |
| 71 | update_qregion(&all_regions, q_iop->t.time); | |
| 72 | dip_update_q(q_iop->dip, q_iop); | |
| 73 | pip_update_q(q_iop); | |
| fa0ab85d AB |
74 | if (!remapper_dev(q_iop->t.device)) |
| 75 | update_q_histo(q_iop->t.bytes); | |
| 095181f2 | 76 | } |
| d76c5b81 AB |
77 | else |
| 78 | io_release(q_iop); | |
| 095181f2 | 79 | } |