diff options
Diffstat (limited to 'collectors/proc.plugin/proc_pagetypeinfo.c')
| -rw-r--r-- | collectors/proc.plugin/proc_pagetypeinfo.c | 336 |
1 files changed, 0 insertions, 336 deletions
diff --git a/collectors/proc.plugin/proc_pagetypeinfo.c b/collectors/proc.plugin/proc_pagetypeinfo.c deleted file mode 100644 index fc5496c63..000000000 --- a/collectors/proc.plugin/proc_pagetypeinfo.c +++ /dev/null @@ -1,336 +0,0 @@ -// SPDX-License-Identifier: GPL-3.0-or-later - -#include "plugin_proc.h" - -// For ULONG_MAX -#include <limits.h> - -#define PLUGIN_PROC_MODULE_PAGETYPEINFO_NAME "/proc/pagetypeinfo" -#define CONFIG_SECTION_PLUGIN_PROC_PAGETYPEINFO "plugin:" PLUGIN_PROC_CONFIG_NAME ":" PLUGIN_PROC_MODULE_PAGETYPEINFO_NAME - -// Zone struct is pglist_data, in include/linux/mmzone.h -// MAX_NR_ZONES is from __MAX_NR_ZONE, which is the last value of the enum. -#define MAX_PAGETYPE_ORDER 11 - -// Names are in mm/page_alloc.c :: migratetype_names. Max size = 10. -#define MAX_ZONETYPE_NAME 16 -#define MAX_PAGETYPE_NAME 16 - -// Defined in include/linux/mmzone.h as __MAX_NR_ZONE (last enum of zone_type) -#define MAX_ZONETYPE 6 -// Defined in include/linux/mmzone.h as MIGRATE_TYPES (last enum of migratetype) -#define MAX_PAGETYPE 7 - - -// -// /proc/pagetypeinfo is declared in mm/vmstat.c :: init_mm_internals -// - -// One line of /proc/pagetypeinfo -struct pageline { - int node; - char *zone; - char *type; - int line; - uint64_t free_pages_size[MAX_PAGETYPE_ORDER]; - RRDDIM *rd[MAX_PAGETYPE_ORDER]; -}; - -// Sum of all orders -struct systemorder { - uint64_t size; - RRDDIM *rd; -}; - - -static inline uint64_t pageline_total_count(struct pageline *p) { - uint64_t sum = 0, o; - for (o=0; o<MAX_PAGETYPE_ORDER; o++) - sum += p->free_pages_size[o]; - return sum; -} - -// Check if a line of /proc/pagetypeinfo is valid to use -// Free block lines starts by "Node" && 4th col is "type" -#define pagetypeinfo_line_valid(ff, l) (strncmp(procfile_lineword(ff, l, 0), "Node", 4) == 0 && strncmp(procfile_lineword(ff, l, 4), "type", 4) == 0) - -// Dimension name from the order -#define dim_name(s, o, pagesize) (snprintfz(s, 16,"%ldKB (%lu)", (1 << o) * pagesize / 1024, o)) - -int do_proc_pagetypeinfo(int update_every, usec_t dt) { - (void)dt; - - // Config - static int do_global, do_detail; - static SIMPLE_PATTERN *filter_types = NULL; - - // Counters from parsing the file, that doesn't change after boot - static struct systemorder systemorders[MAX_PAGETYPE_ORDER] = {}; - static struct pageline* pagelines = NULL; - static long pagesize = 0; - static size_t pageorders_cnt = 0, pagelines_cnt = 0, ff_lines = 0; - - // Handle - static procfile *ff = NULL; - static char ff_path[FILENAME_MAX + 1]; - - // RRD Sets - static RRDSET *st_order = NULL; - static RRDSET **st_nodezonetype = NULL; - - // Local temp variables - long unsigned int l, o, p; - struct pageline *pgl = NULL; - - // -------------------------------------------------------------------- - // Startup: Init arch and open /proc/pagetypeinfo - if (unlikely(!pagesize)) { - pagesize = sysconf(_SC_PAGESIZE); - } - - if(unlikely(!ff)) { - snprintfz(ff_path, FILENAME_MAX, "%s%s", netdata_configured_host_prefix, PLUGIN_PROC_MODULE_PAGETYPEINFO_NAME); - ff = procfile_open(config_get(CONFIG_SECTION_PLUGIN_PROC_PAGETYPEINFO, "filename to monitor", ff_path), " \t:", PROCFILE_FLAG_DEFAULT); - - if(unlikely(!ff)) { - strncpyz(ff_path, PLUGIN_PROC_MODULE_PAGETYPEINFO_NAME, FILENAME_MAX); - ff = procfile_open(PLUGIN_PROC_MODULE_PAGETYPEINFO_NAME, " \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 - - // -------------------------------------------------------------------- - // Init: find how many Nodes, Zones and Types - if(unlikely(pagelines_cnt == 0)) { - size_t nodenumlast = -1; - char *zonenamelast = NULL; - - ff_lines = procfile_lines(ff); - if(unlikely(!ff_lines)) { - collector_error("PLUGIN: PROC_PAGETYPEINFO: Cannot read %s, zero lines reported.", ff_path); - return 1; - } - - // Configuration - do_global = config_get_boolean(CONFIG_SECTION_PLUGIN_PROC_PAGETYPEINFO, "enable system summary", CONFIG_BOOLEAN_YES); - do_detail = config_get_boolean_ondemand(CONFIG_SECTION_PLUGIN_PROC_PAGETYPEINFO, "enable detail per-type", CONFIG_BOOLEAN_AUTO); - filter_types = simple_pattern_create( - config_get(CONFIG_SECTION_PLUGIN_PROC_PAGETYPEINFO, "hide charts id matching", ""), NULL, - SIMPLE_PATTERN_SUFFIX, true); - - pagelines_cnt = 0; - - // Pass 1: how many lines would be valid - for (l = 4; l < ff_lines; l++) { - if (!pagetypeinfo_line_valid(ff, l)) - continue; - - pagelines_cnt++; - } - if (pagelines_cnt == 0) { - collector_error("PLUGIN: PROC_PAGETYPEINFO: Unable to parse any valid line in %s", ff_path); - return 1; - } - - // 4th line is the "Free pages count per migrate type at order". Just subtract these 8 words. - pageorders_cnt = procfile_linewords(ff, 3); - if (pageorders_cnt < 9) { - collector_error("PLUGIN: PROC_PAGETYPEINFO: Unable to parse Line 4 of %s", ff_path); - return 1; - } - - pageorders_cnt -= 9; - - if (pageorders_cnt > MAX_PAGETYPE_ORDER) { - collector_error("PLUGIN: PROC_PAGETYPEINFO: pageorder found (%lu) is higher than max %d", - (long unsigned int) pageorders_cnt, MAX_PAGETYPE_ORDER); - return 1; - } - - // Init pagelines from scanned lines - if (!pagelines) { - pagelines = callocz(pagelines_cnt, sizeof(struct pageline)); - if (!pagelines) { - collector_error("PLUGIN: PROC_PAGETYPEINFO: Cannot allocate %lu pagelines of %lu B", - (long unsigned int) pagelines_cnt, (long unsigned int) sizeof(struct pageline)); - return 1; - } - } - - // Pass 2: Scan the file again, with details - p = 0; - for (l=4; l < ff_lines; l++) { - - if (!pagetypeinfo_line_valid(ff, l)) - continue; - - size_t nodenum = strtoul(procfile_lineword(ff, l, 1), NULL, 10); - char *zonename = procfile_lineword(ff, l, 3); - char *typename = procfile_lineword(ff, l, 5); - - // We changed node or zone - if (nodenum != nodenumlast || !zonenamelast || strncmp(zonename, zonenamelast, 6) != 0) { - zonenamelast = zonename; - } - - // Populate the line - pgl = &pagelines[p]; - - pgl->line = l; - pgl->node = nodenum; - pgl->type = typename; - pgl->zone = zonename; - for (o = 0; o < pageorders_cnt; o++) - pgl->free_pages_size[o] = str2uint64_t(procfile_lineword(ff, l, o + 6), NULL) * 1 << o; - - p++; - } - - // Init the RRD graphs - - // Per-Order: sum of all node, zone, type Grouped by order - if (do_global != CONFIG_BOOLEAN_NO) { - st_order = rrdset_create_localhost( - "mem" - , "pagetype_global" - , NULL - , "pagetype" - , NULL - , "System orders available" - , "B" - , PLUGIN_PROC_NAME - , PLUGIN_PROC_MODULE_PAGETYPEINFO_NAME - , NETDATA_CHART_PRIO_MEM_PAGEFRAG - , update_every - , RRDSET_TYPE_STACKED - ); - for (o = 0; o < pageorders_cnt; o++) { - char id[3+1]; - snprintfz(id, sizeof(id) - 1, "%lu", o); - - char name[20+1]; - dim_name(name, o, pagesize); - - systemorders[o].rd = rrddim_add(st_order, id, name, pagesize, 1, RRD_ALGORITHM_ABSOLUTE); - } - } - - - // Per-Numa Node & Zone & Type (full detail). Only if sum(line) > 0 - st_nodezonetype = callocz(pagelines_cnt, sizeof(RRDSET *)); - for (p = 0; p < pagelines_cnt; p++) { - pgl = &pagelines[p]; - - // Skip invalid, refused or empty pagelines if not explicitly requested - if (!pgl - || do_detail == CONFIG_BOOLEAN_NO - || (do_detail == CONFIG_BOOLEAN_AUTO && pageline_total_count(pgl) == 0 && netdata_zero_metrics_enabled != CONFIG_BOOLEAN_YES)) - continue; - - // "pagetype Node" + NUMA-NodeId + ZoneName + TypeName - char setid[13+1+2+1+MAX_ZONETYPE_NAME+1+MAX_PAGETYPE_NAME+1]; - snprintfz(setid, sizeof(setid) - 1, "pagetype_Node%d_%s_%s", pgl->node, pgl->zone, pgl->type); - - // Skip explicitly refused charts - if (simple_pattern_matches(filter_types, setid)) - continue; - - // "Node" + NUMA-NodeID + ZoneName + TypeName - char setname[4+1+MAX_ZONETYPE_NAME+1+MAX_PAGETYPE_NAME +1]; - snprintfz(setname, MAX_ZONETYPE_NAME + MAX_PAGETYPE_NAME, "Node %d %s %s", pgl->node, pgl->zone, pgl->type); - - st_nodezonetype[p] = rrdset_create_localhost( - "mem" - , setid - , NULL - , "pagetype" - , "mem.pagetype" - , setname - , "B" - , PLUGIN_PROC_NAME - , PLUGIN_PROC_MODULE_PAGETYPEINFO_NAME - , NETDATA_CHART_PRIO_MEM_PAGEFRAG + 1 + p - , update_every - , RRDSET_TYPE_STACKED - ); - - char node[50+1]; - snprintfz(node, sizeof(node) - 1, "node%d", pgl->node); - rrdlabels_add(st_nodezonetype[p]->rrdlabels, "node_id", node, RRDLABEL_SRC_AUTO); - rrdlabels_add(st_nodezonetype[p]->rrdlabels, "node_zone", pgl->zone, RRDLABEL_SRC_AUTO); - rrdlabels_add(st_nodezonetype[p]->rrdlabels, "node_type", pgl->type, RRDLABEL_SRC_AUTO); - - for (o = 0; o < pageorders_cnt; o++) { - char dimid[3+1]; - snprintfz(dimid, sizeof(dimid) - 1, "%lu", o); - char dimname[20+1]; - dim_name(dimname, o, pagesize); - - pgl->rd[o] = rrddim_add(st_nodezonetype[p], dimid, dimname, pagesize, 1, RRD_ALGORITHM_ABSOLUTE); - } - } - } - - // -------------------------------------------------------------------- - // Update pagelines - - // Process each line - p = 0; - for (l=4; l<ff_lines; l++) { - - if (!pagetypeinfo_line_valid(ff, l)) - continue; - - size_t words = procfile_linewords(ff, l); - - if (words != 7+pageorders_cnt) { - collector_error("PLUGIN: PROC_PAGETYPEINFO: Unable to read line %lu, %lu words found instead of %lu", - l+1, (long unsigned int) words, (long unsigned int) 7+pageorders_cnt); - break; - } - - for (o = 0; o < pageorders_cnt; o++) { - // Reset counter - if (p == 0) - systemorders[o].size = 0; - - // Update orders of the current line - pagelines[p].free_pages_size[o] = str2uint64_t(procfile_lineword(ff, l, o + 6), NULL) * 1 << o; - - // Update sum by order - systemorders[o].size += pagelines[p].free_pages_size[o]; - } - - p++; - } - - // -------------------------------------------------------------------- - // update RRD values - - // Global system per order - if (st_order) { - for (o = 0; o < pageorders_cnt; o++) - rrddim_set_by_pointer(st_order, systemorders[o].rd, systemorders[o].size); - rrdset_done(st_order); - } - - // Per Node-Zone-Type - if (do_detail) { - for (p = 0; p < pagelines_cnt; p++) { - // Skip empty graphs - if (!st_nodezonetype[p]) - continue; - - for (o = 0; o < pageorders_cnt; o++) - rrddim_set_by_pointer(st_nodezonetype[p], pagelines[p].rd[o], pagelines[p].free_pages_size[o]); - rrdset_done(st_nodezonetype[p]); - } - } - - return 0; -} |