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(__u32 device,char * name,char * post)29 FILE *latency_open(__u32 device, char *name, char *post)
30 {
31 FILE *fp = NULL;
32
33 if (name) {
34 int mjr, mnr;
35 char oname[strlen(name) + 32];
36
37 mjr = device >> MINORBITS;
38 mnr = device & ((1 << MINORBITS) - 1);
39
40 sprintf(oname, "%s_%03d,%03d_%s.dat", name, mjr, mnr, post);
41 if ((fp = my_fopen(oname, "w")) == NULL)
42 perror(oname);
43 else
44 add_file(fp, strdup(oname));
45 }
46
47 return fp;
48 }
49
latency_alloc(struct d_info * dip)50 void latency_alloc(struct d_info *dip)
51 {
52 dip->q2d_ofp = latency_open(dip->device, q2d_name, "q2d");
53 dip->d2c_ofp = latency_open(dip->device, d2c_name, "d2c");
54 dip->q2c_ofp = latency_open(dip->device, q2c_name, "q2c");
55 }
56
latency_q2d(struct d_info * dip,__u64 tstamp,__u64 latency)57 void latency_q2d(struct d_info *dip, __u64 tstamp, __u64 latency)
58 {
59 plat_x2c(dip->q2d_plat_handle, tstamp, latency);
60 latency_out(dip->q2d_ofp, tstamp, latency);
61 }
62
latency_d2c(struct d_info * dip,__u64 tstamp,__u64 latency)63 void latency_d2c(struct d_info *dip, __u64 tstamp, __u64 latency)
64 {
65 plat_x2c(dip->d2c_plat_handle, tstamp, latency);
66 latency_out(dip->d2c_ofp, tstamp, latency);
67 }
68
latency_q2c(struct d_info * dip,__u64 tstamp,__u64 latency)69 void latency_q2c(struct d_info *dip, __u64 tstamp, __u64 latency)
70 {
71 plat_x2c(dip->q2c_plat_handle, tstamp, latency);
72 latency_out(dip->q2c_ofp, tstamp, latency);
73 }
74