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Diffstat (limited to 'collectors/proc.plugin/proc_softirqs.c')
-rw-r--r--collectors/proc.plugin/proc_softirqs.c243
1 files changed, 0 insertions, 243 deletions
diff --git a/collectors/proc.plugin/proc_softirqs.c b/collectors/proc.plugin/proc_softirqs.c
deleted file mode 100644
index 5f0502f66..000000000
--- a/collectors/proc.plugin/proc_softirqs.c
+++ /dev/null
@@ -1,243 +0,0 @@
-// SPDX-License-Identifier: GPL-3.0-or-later
-
-#include "plugin_proc.h"
-
-#define PLUGIN_PROC_MODULE_SOFTIRQS_NAME "/proc/softirqs"
-
-#define MAX_INTERRUPT_NAME 50
-
-struct cpu_interrupt {
- unsigned long long value;
- RRDDIM *rd;
-};
-
-struct interrupt {
- int used;
- char *id;
- char name[MAX_INTERRUPT_NAME + 1];
- RRDDIM *rd;
- unsigned long long total;
- struct cpu_interrupt cpu[];
-};
-
-// since each interrupt is variable in size
-// we use this to calculate its record size
-#define recordsize(cpus) (sizeof(struct interrupt) + ((cpus) * sizeof(struct cpu_interrupt)))
-
-// given a base, get a pointer to each record
-#define irrindex(base, line, cpus) ((struct interrupt *)&((char *)(base))[(line) * recordsize(cpus)])
-
-static inline struct interrupt *get_interrupts_array(size_t lines, int cpus) {
- static struct interrupt *irrs = NULL;
- static size_t allocated = 0;
-
- if(unlikely(lines != allocated)) {
- uint32_t l;
- int c;
-
- irrs = (struct interrupt *)reallocz(irrs, lines * recordsize(cpus));
-
- // reset all interrupt RRDDIM pointers as any line could have shifted
- for(l = 0; l < lines ;l++) {
- struct interrupt *irr = irrindex(irrs, l, cpus);
- irr->rd = NULL;
- irr->name[0] = '\0';
- for(c = 0; c < cpus ;c++)
- irr->cpu[c].rd = NULL;
- }
-
- allocated = lines;
- }
-
- return irrs;
-}
-
-int do_proc_softirqs(int update_every, usec_t dt) {
- (void)dt;
- static procfile *ff = NULL;
- static int cpus = -1, do_per_core = CONFIG_BOOLEAN_INVALID;
- struct interrupt *irrs = NULL;
-
- if(unlikely(do_per_core == CONFIG_BOOLEAN_INVALID))
- do_per_core = config_get_boolean_ondemand("plugin:proc:/proc/softirqs", "interrupts per core", CONFIG_BOOLEAN_AUTO);
-
- if(unlikely(!ff)) {
- char filename[FILENAME_MAX + 1];
- snprintfz(filename, FILENAME_MAX, "%s%s", netdata_configured_host_prefix, "/proc/softirqs");
- ff = procfile_open(config_get("plugin:proc:/proc/softirqs", "filename to monitor", filename), " \t:", PROCFILE_FLAG_DEFAULT);
- if(unlikely(!ff)) return 1;
- }
-
- ff = procfile_readall(ff);
- if(unlikely(!ff)) return 0; // we return 0, so that we will retry to open it next time
-
- size_t lines = procfile_lines(ff), l;
- size_t words = procfile_linewords(ff, 0);
-
- if(unlikely(!lines)) {
- collector_error("Cannot read /proc/softirqs, zero lines reported.");
- return 1;
- }
-
- // find how many CPUs are there
- if(unlikely(cpus == -1)) {
- uint32_t w;
- cpus = 0;
- for(w = 0; w < words ; w++) {
- if(likely(strncmp(procfile_lineword(ff, 0, w), "CPU", 3) == 0))
- cpus++;
- }
- }
-
- if(unlikely(!cpus)) {
- collector_error("PLUGIN: PROC_SOFTIRQS: Cannot find the number of CPUs in /proc/softirqs");
- return 1;
- }
-
- // allocate the size we need;
- irrs = get_interrupts_array(lines, cpus);
- irrs[0].used = 0;
-
- // loop through all lines
- for(l = 1; l < lines ;l++) {
- struct interrupt *irr = irrindex(irrs, l, cpus);
- irr->used = 0;
- irr->total = 0;
-
- words = procfile_linewords(ff, l);
- if(unlikely(!words)) continue;
-
- irr->id = procfile_lineword(ff, l, 0);
- if(unlikely(!irr->id || !irr->id[0])) continue;
-
- int c;
- for(c = 0; c < cpus ;c++) {
- if(likely((c + 1) < (int)words))
- irr->cpu[c].value = str2ull(procfile_lineword(ff, l, (uint32_t) (c + 1)), NULL);
- else
- irr->cpu[c].value = 0;
-
- irr->total += irr->cpu[c].value;
- }
-
- strncpyz(irr->name, irr->id, MAX_INTERRUPT_NAME);
-
- irr->used = 1;
- }
-
- // --------------------------------------------------------------------
-
- static RRDSET *st_system_softirqs = NULL;
- if(unlikely(!st_system_softirqs)) {
- st_system_softirqs = rrdset_create_localhost(
- "system"
- , "softirqs"
- , NULL
- , "softirqs"
- , NULL
- , "System softirqs"
- , "softirqs/s"
- , PLUGIN_PROC_NAME
- , PLUGIN_PROC_MODULE_SOFTIRQS_NAME
- , NETDATA_CHART_PRIO_SYSTEM_SOFTIRQS
- , update_every
- , RRDSET_TYPE_STACKED
- );
- }
-
- for(l = 0; l < lines ;l++) {
- struct interrupt *irr = irrindex(irrs, l, cpus);
-
- if(irr->used && irr->total) {
- // some interrupt may have changed without changing the total number of lines
- // if the same number of interrupts have been added and removed between two
- // calls of this function.
- if(unlikely(!irr->rd || strncmp(irr->name, rrddim_name(irr->rd), MAX_INTERRUPT_NAME) != 0)) {
- irr->rd = rrddim_add(st_system_softirqs, irr->id, irr->name, 1, 1, RRD_ALGORITHM_INCREMENTAL);
- rrddim_reset_name(st_system_softirqs, irr->rd, irr->name);
-
- // also reset per cpu RRDDIMs to avoid repeating strncmp() in the per core loop
- if(likely(do_per_core != CONFIG_BOOLEAN_NO)) {
- int c;
- for(c = 0; c < cpus; c++) irr->cpu[c].rd = NULL;
- }
- }
-
- rrddim_set_by_pointer(st_system_softirqs, irr->rd, irr->total);
- }
- }
-
- rrdset_done(st_system_softirqs);
-
- // --------------------------------------------------------------------
-
- if(do_per_core != CONFIG_BOOLEAN_NO) {
- static RRDSET **core_st = NULL;
- static int old_cpus = 0;
-
- if(old_cpus < cpus) {
- core_st = reallocz(core_st, sizeof(RRDSET *) * cpus);
- memset(&core_st[old_cpus], 0, sizeof(RRDSET *) * (cpus - old_cpus));
- old_cpus = cpus;
- }
-
- int c;
-
- for(c = 0; c < cpus ; c++) {
- if(unlikely(!core_st[c])) {
- // find if everything is just zero
- unsigned long long core_sum = 0;
-
- for (l = 0; l < lines; l++) {
- struct interrupt *irr = irrindex(irrs, l, cpus);
- if (unlikely(!irr->used)) continue;
- core_sum += irr->cpu[c].value;
- }
-
- if (unlikely(core_sum == 0)) continue; // try next core
-
- char id[50 + 1];
- snprintfz(id, sizeof(id) - 1, "cpu%d_softirqs", c);
-
- char title[100 + 1];
- snprintfz(title, sizeof(title) - 1, "CPU softirqs");
-
- core_st[c] = rrdset_create_localhost(
- "cpu"
- , id
- , NULL
- , "softirqs"
- , "cpu.softirqs"
- , title
- , "softirqs/s"
- , PLUGIN_PROC_NAME
- , PLUGIN_PROC_MODULE_SOFTIRQS_NAME
- , NETDATA_CHART_PRIO_SOFTIRQS_PER_CORE + c
- , update_every
- , RRDSET_TYPE_STACKED
- );
-
- char core[50+1];
- snprintfz(core, sizeof(core) - 1, "cpu%d", c);
- rrdlabels_add(core_st[c]->rrdlabels, "cpu", core, RRDLABEL_SRC_AUTO);
- }
-
- for(l = 0; l < lines ;l++) {
- struct interrupt *irr = irrindex(irrs, l, cpus);
-
- if(irr->used && (do_per_core == CONFIG_BOOLEAN_YES || irr->cpu[c].value)) {
- if(unlikely(!irr->cpu[c].rd)) {
- irr->cpu[c].rd = rrddim_add(core_st[c], irr->id, irr->name, 1, 1, RRD_ALGORITHM_INCREMENTAL);
- rrddim_reset_name(core_st[c], irr->cpu[c].rd, irr->name);
- }
-
- rrddim_set_by_pointer(core_st[c], irr->cpu[c].rd, irr->cpu[c].value);
- }
- }
-
- rrdset_done(core_st[c]);
- }
- }
-
- return 0;
-}
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