Commit | Line | Data |
---|---|---|
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 "globals.h" | |
22 | ||
095181f2 | 23 | static void __add_trace(struct io *iop) |
63eba147 | 24 | { |
6eb42155 | 25 | time_t now = time(NULL); |
63eba147 | 26 | |
6eb42155 | 27 | n_traces++; |
21e47d90 | 28 | iostat_check_time(iop->t.time); |
6eb42155 ADB |
29 | |
30 | if (verbose && ((now - last_vtrace) > 0)) { | |
32ff7e3b | 31 | printf("%10lu t (%6.2lf%%)\r", n_traces, pct_done()); |
63eba147 | 32 | if ((n_traces % 1000000) == 0) printf("\n"); |
6eb42155 ADB |
33 | fflush(stdout); |
34 | last_vtrace = now; | |
63eba147 JA |
35 | } |
36 | ||
37 | switch (iop->t.action & 0xffff) { | |
095181f2 JA |
38 | case __BLK_TA_QUEUE: trace_queue(iop); break; |
39 | case __BLK_TA_REMAP: trace_remap(iop); break; | |
4c48f14e AB |
40 | case __BLK_TA_INSERT: trace_insert(iop); break; |
41 | case __BLK_TA_GETRQ: trace_getrq(iop); break; | |
095181f2 JA |
42 | case __BLK_TA_BACKMERGE: trace_merge(iop); break; |
43 | case __BLK_TA_FRONTMERGE: trace_merge(iop); break; | |
44 | case __BLK_TA_REQUEUE: trace_requeue(iop); break; | |
45 | case __BLK_TA_ISSUE: trace_issue(iop); break; | |
46 | case __BLK_TA_COMPLETE: trace_complete(iop); break; | |
b2822cea AB |
47 | case __BLK_TA_PLUG: trace_plug(iop); break; |
48 | case __BLK_TA_UNPLUG_IO: trace_unplug_io(iop); break; | |
49 | case __BLK_TA_UNPLUG_TIMER: trace_unplug_timer(iop); break; | |
354db430 | 50 | case __BLK_TA_SLEEPRQ: trace_sleeprq(iop); break; |
8b10aae0 AB |
51 | default: |
52 | io_release(iop); | |
095181f2 | 53 | return; |
63eba147 JA |
54 | } |
55 | } | |
56 | ||
84a26fcd AB |
57 | static void trace_message(struct io *iop) |
58 | { | |
59 | char scratch[15]; | |
60 | char msg[iop->t.pdu_len + 1]; | |
61 | ||
62 | if (!io_setup(iop, IOP_M)) | |
63 | return; | |
64 | ||
65 | memcpy(msg, iop->pdu, iop->t.pdu_len); | |
66 | msg[iop->t.pdu_len] = '\0'; | |
67 | ||
68 | fprintf(msgs_ofp, "%s %5d.%09lu %s\n", | |
69 | make_dev_hdr(scratch, 15, iop->dip, 1), | |
70 | (int)SECONDS(iop->t.time), | |
71 | (unsigned long)NANO_SECONDS(iop->t.time), msg); | |
72 | } | |
73 | ||
63eba147 JA |
74 | void add_trace(struct io *iop) |
75 | { | |
76 | if (iop->t.action & BLK_TC_ACT(BLK_TC_NOTIFY)) { | |
4c48f14e | 77 | if (iop->t.action == BLK_TN_PROCESS) { |
8b10aae0 | 78 | if (iop->t.pid == 0) |
c053af42 | 79 | process_alloc(0, "kernel"); |
4c48f14e AB |
80 | else { |
81 | char *slash = strchr(iop->pdu, '/'); | |
82 | if (slash) | |
83 | *slash = '\0'; | |
84 | ||
c053af42 | 85 | process_alloc(iop->t.pid, iop->pdu); |
4c48f14e | 86 | } |
c053af42 | 87 | } else if (iop->t.action == BLK_TN_MESSAGE) |
84a26fcd | 88 | trace_message(iop); |
6eb42155 | 89 | io_release(iop); |
c053af42 | 90 | } else if (iop->t.action & BLK_TC_ACT(BLK_TC_PC)) { |
6eb42155 | 91 | io_release(iop); |
c053af42 | 92 | } else { |
001b2633 JA |
93 | if (time_bounded) { |
94 | if (BIT_TIME(iop->t.time) < t_astart) { | |
95 | io_release(iop); | |
96 | return; | |
c053af42 | 97 | } else if (BIT_TIME(iop->t.time) > t_aend) { |
001b2633 JA |
98 | io_release(iop); |
99 | done = 1; | |
100 | return; | |
101 | } | |
102 | } | |
63eba147 | 103 | __add_trace(iop); |
001b2633 | 104 | } |
63eba147 | 105 | } |