diff options
Diffstat (limited to 'collectors/proc.plugin/proc_interrupts.c')
| -rw-r--r-- | collectors/proc.plugin/proc_interrupts.c | 245 |
1 files changed, 0 insertions, 245 deletions
diff --git a/collectors/proc.plugin/proc_interrupts.c b/collectors/proc.plugin/proc_interrupts.c deleted file mode 100644 index 37071b22f..000000000 --- a/collectors/proc.plugin/proc_interrupts.c +++ /dev/null @@ -1,245 +0,0 @@ -// SPDX-License-Identifier: GPL-3.0-or-later - -#include "plugin_proc.h" - -#define PLUGIN_PROC_MODULE_INTERRUPTS_NAME "/proc/interrupts" -#define CONFIG_SECTION_PLUGIN_PROC_INTERRUPTS "plugin:" PLUGIN_PROC_CONFIG_NAME ":" PLUGIN_PROC_MODULE_INTERRUPTS_NAME - -#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)) { - size_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_interrupts(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(CONFIG_SECTION_PLUGIN_PROC_INTERRUPTS, "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/interrupts"); - ff = procfile_open(config_get(CONFIG_SECTION_PLUGIN_PROC_INTERRUPTS, "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/interrupts, 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_INTERRUPTS: Cannot find the number of CPUs in /proc/interrupts"); - 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; - - size_t idlen = strlen(irr->id); - if(irr->id[idlen - 1] == ':') - irr->id[--idlen] = '\0'; - - 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; - } - - if(unlikely(isdigit(irr->id[0]) && (uint32_t)(cpus + 2) < words)) { - strncpyz(irr->name, procfile_lineword(ff, l, words - 1), MAX_INTERRUPT_NAME); - size_t nlen = strlen(irr->name); - if(likely(nlen + 1 + idlen <= MAX_INTERRUPT_NAME)) { - irr->name[nlen] = '_'; - strncpyz(&irr->name[nlen + 1], irr->id, MAX_INTERRUPT_NAME - nlen - 1); - } - else { - irr->name[MAX_INTERRUPT_NAME - idlen - 1] = '_'; - strncpyz(&irr->name[MAX_INTERRUPT_NAME - idlen], irr->id, idlen); - } - } - else { - strncpyz(irr->name, irr->id, MAX_INTERRUPT_NAME); - } - - irr->used = 1; - } - - static RRDSET *st_system_interrupts = NULL; - if(unlikely(!st_system_interrupts)) - st_system_interrupts = rrdset_create_localhost( - "system" - , "interrupts" - , NULL - , "interrupts" - , NULL - , "System interrupts" - , "interrupts/s" - , PLUGIN_PROC_NAME - , PLUGIN_PROC_MODULE_INTERRUPTS_NAME - , NETDATA_CHART_PRIO_SYSTEM_INTERRUPTS - , 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(rrddim_name(irr->rd), irr->name, MAX_INTERRUPT_NAME) != 0)) { - irr->rd = rrddim_add(st_system_interrupts, irr->id, irr->name, 1, 1, RRD_ALGORITHM_INCREMENTAL); - rrddim_reset_name(st_system_interrupts, 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_interrupts, irr->rd, irr->total); - } - } - - rrdset_done(st_system_interrupts); - - if(likely(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])) { - char id[50+1]; - snprintfz(id, sizeof(id) - 1, "cpu%d_interrupts", c); - - char title[100+1]; - snprintfz(title, sizeof(title) - 1, "CPU Interrupts"); - core_st[c] = rrdset_create_localhost( - "cpu" - , id - , NULL - , "interrupts" - , "cpu.interrupts" - , title - , "interrupts/s" - , PLUGIN_PROC_NAME - , PLUGIN_PROC_MODULE_INTERRUPTS_NAME - , NETDATA_CHART_PRIO_INTERRUPTS_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; -} |