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
latency_out(FILE * ofp,__u64 tstamp,__u64 latency)23 static inline void latency_out(FILE *ofp, __u64 tstamp, __u64 latency)
24 {
25 if (ofp)
26 fprintf(ofp, "%lf %lf\n", TO_SEC(tstamp), TO_SEC(latency));
27 }
28
latency_open(struct d_info * dip,char * name,char * post)29 FILE *latency_open(struct d_info *dip, char *name, char *post)
30 {
31 FILE *fp = NULL;
32
33 if (name) {
34 size_t tlen = strlen(name) + strlen(dip->dip_name)
35 + strlen(post) + 32;
36 char oname[tlen];
37
38 sprintf(oname, "%s_%s_%s.dat", name, dip->dip_name, post);
39 if ((fp = my_fopen(oname, "w")) == NULL)
40 perror(oname);
41 else
42 add_file(fp, strdup(oname));
43 }
44
45 return fp;
46 }
47
latency_alloc(struct d_info * dip)48 void latency_alloc(struct d_info *dip)
49 {
50 dip->q2d_ofp = latency_open(dip, q2d_name, "q2d");
51 dip->d2c_ofp = latency_open(dip, d2c_name, "d2c");
52 dip->q2c_ofp = latency_open(dip, q2c_name, "q2c");
53 }
54
latency_q2d(struct d_info * dip,__u64 tstamp,__u64 latency)55 void latency_q2d(struct d_info *dip, __u64 tstamp, __u64 latency)
56 {
57 plat_x2c(dip->q2d_plat_handle, tstamp, latency);
58 latency_out(dip->q2d_ofp, tstamp, latency);
59 }
60
latency_d2c(struct d_info * dip,__u64 tstamp,__u64 latency)61 void latency_d2c(struct d_info *dip, __u64 tstamp, __u64 latency)
62 {
63 plat_x2c(dip->d2c_plat_handle, tstamp, latency);
64 latency_out(dip->d2c_ofp, tstamp, latency);
65 }
66
latency_q2c(struct d_info * dip,__u64 tstamp,__u64 latency)67 void latency_q2c(struct d_info *dip, __u64 tstamp, __u64 latency)
68 {
69 plat_x2c(dip->q2c_plat_handle, tstamp, latency);
70 latency_out(dip->q2c_ofp, tstamp, latency);
71 }
72