3 * Copyright (C) 2007 Peter Holik
4 * Copyright (C) 2011 Florian Forster
6 * This program is free software; you can redistribute it and/or modify it
7 * under the terms of the GNU General Public License as published by the
8 * Free Software Foundation; either version 2 of the License, or (at your
9 * option) any later version.
11 * This program is distributed in the hope that it will be useful, but
12 * WITHOUT ANY WARRANTY; without even the implied warranty of
13 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
14 * General Public License for more details.
16 * You should have received a copy of the GNU General Public License along
17 * with this program; if not, write to the Free Software Foundation, Inc.,
18 * 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
21 * Peter Holik <peter at holik.at>
28 #include "configfile.h"
29 #include "utils_ignorelist.h"
32 # error "No applicable input method."
36 * (Module-)Global variables
38 static const char *config_keys[] =
43 static int config_keys_num = STATIC_ARRAY_SIZE (config_keys);
45 static ignorelist_t *ignorelist = NULL;
50 static int irq_config (const char *key, const char *value)
52 if (ignorelist == NULL)
53 ignorelist = ignorelist_create (/* invert = */ 1);
55 if (strcasecmp (key, "Irq") == 0)
57 ignorelist_add (ignorelist, value);
59 else if (strcasecmp (key, "IgnoreSelected") == 0)
64 ignorelist_set_invert (ignorelist, invert);
74 static void irq_submit (const char *irq_name, derive_t value)
77 value_list_t vl = VALUE_LIST_INIT;
79 if (ignorelist_match (ignorelist, irq_name) != 0)
82 values[0].derive = value;
86 sstrncpy (vl.host, hostname_g, sizeof (vl.host));
87 sstrncpy (vl.plugin, "irq", sizeof (vl.plugin));
88 sstrncpy (vl.type, "irq", sizeof (vl.type));
89 sstrncpy (vl.type_instance, irq_name, sizeof (vl.type_instance));
91 plugin_dispatch_values (&vl);
92 } /* void irq_submit */
94 static int irq_read (void)
103 * CPU0 CPU1 CPU2 CPU3
104 * 0: 2574 1 3 2 IO-APIC-edge timer
105 * 1: 102553 158669 218062 70587 IO-APIC-edge i8042
106 * 8: 0 0 0 1 IO-APIC-edge rtc0
108 fh = fopen ("/proc/interrupts", "r");
112 ERROR ("irq plugin: fopen (/proc/interrupts): %s",
113 sstrerror (errno, errbuf, sizeof (errbuf)));
117 /* Get CPU count from the first line */
118 if(fgets (buffer, sizeof (buffer), fh) != NULL) {
119 cpu_count = strsplit (buffer, fields,
120 STATIC_ARRAY_SIZE (fields));
122 ERROR ("irq plugin: unable to get CPU count from first line "
123 "of /proc/interrupts");
128 while (fgets (buffer, sizeof (buffer), fh) != NULL)
135 int irq_values_to_parse;
137 fields_num = strsplit (buffer, fields,
138 STATIC_ARRAY_SIZE (fields));
142 /* Parse this many numeric fields, skip the rest
143 * (+1 because first there is a name of irq in each line) */
144 if (fields_num >= cpu_count + 1)
145 irq_values_to_parse = cpu_count;
147 irq_values_to_parse = fields_num - 1;
149 /* First field is irq name and colon */
150 irq_name = fields[0];
151 irq_name_len = strlen (irq_name);
152 if (irq_name_len < 2)
155 /* Check if irq name ends with colon.
156 * Otherwise it's a header. */
157 if (irq_name[irq_name_len - 1] != ':')
160 /* Is it the the ARM fast interrupt (FIQ)? */
161 if (irq_name_len == 4 && (strncmp(irq_name, "FIQ:", 4) == 0))
164 irq_name[irq_name_len - 1] = 0;
168 for (i = 1; i <= irq_values_to_parse; i++)
174 status = parse_value (fields[i], &v, DS_TYPE_DERIVE);
178 irq_value += v.derive;
181 /* No valid fields -> do not submit anything. */
185 irq_submit (irq_name, irq_value);
193 void module_register (void)
195 plugin_register_config ("irq", irq_config,
196 config_keys, config_keys_num);
197 plugin_register_read ("irq", irq_read);
198 } /* void module_register */