| 1 | // SPDX-License-Identifier: GPL-3.0-or-later |
| 2 | |
| 3 | #ifndef NETDATA_EBPF_CACHESTAT_H |
| 4 | #define NETDATA_EBPF_CACHESTAT_H 1 |
| 5 | |
| 6 | // Module name & description |
| 7 | #define NETDATA_EBPF_MODULE_NAME_CACHESTAT "cachestat" |
| 8 | #define NETDATA_EBPF_CACHESTAT_MODULE_DESC \ |
| 9 | "Monitor Linux page cache internal functions. This thread is integrated with apps and cgroup." |
| 10 | |
| 11 | // charts |
| 12 | #define NETDATA_CACHESTAT_HIT_RATIO_CHART "cachestat_ratio" |
| 13 | #define NETDATA_CACHESTAT_DIRTY_CHART "cachestat_dirties" |
| 14 | #define NETDATA_CACHESTAT_HIT_CHART "cachestat_hits" |
| 15 | #define NETDATA_CACHESTAT_MISSES_CHART "cachestat_misses" |
| 16 | |
| 17 | #define NETDATA_CACHESTAT_SUBMENU "page_cache" |
| 18 | |
| 19 | #define EBPF_CACHESTAT_UNITS_PAGE "pages/s" |
| 20 | #define EBPF_CACHESTAT_UNITS_HITS "hits/s" |
| 21 | #define EBPF_CACHESTAT_UNITS_MISSES "misses/s" |
| 22 | |
| 23 | // configuration file |
| 24 | #define NETDATA_CACHESTAT_CONFIG_FILE "cachestat.conf" |
| 25 | |
| 26 | // Contexts |
| 27 | #define NETDATA_MEM_CACHESTAT_HIT_RATIO_CONTEXT "mem.cachestat_ratio" |
| 28 | #define NETDATA_MEM_CACHESTAT_MODIFIED_CACHE_CONTEXT "mem.cachestat_dirties" |
| 29 | #define NETDATA_MEM_CACHESTAT_HIT_FILES_CONTEXT "mem.cachestat_hits" |
| 30 | #define NETDATA_MEM_CACHESTAT_MISS_FILES_CONTEXT "mem.cachestat_misses" |
| 31 | |
| 32 | #define NETDATA_CGROUP_CACHESTAT_HIT_RATIO_CONTEXT "cgroup.cachestat_ratio" |
| 33 | #define NETDATA_CGROUP_CACHESTAT_MODIFIED_CACHE_CONTEXT "cgroup.cachestat_dirties" |
| 34 | #define NETDATA_CGROUP_CACHESTAT_HIT_FILES_CONTEXT "cgroup.cachestat_hits" |
| 35 | #define NETDATA_CGROUP_CACHESTAT_MISS_FILES_CONTEXT "cgroup.cachestat_misses" |
| 36 | |
| 37 | #define NETDATA_SYSTEMD_CACHESTAT_HIT_RATIO_CONTEXT "systemd.service.cachestat_ratio" |
| 38 | #define NETDATA_SYSTEMD_CACHESTAT_MODIFIED_CACHE_CONTEXT "systemd.service.cachestat_dirties" |
| 39 | #define NETDATA_SYSTEMD_CACHESTAT_HIT_FILES_CONTEXT "systemd.service.cachestat_hits" |
| 40 | #define NETDATA_SYSTEMD_CACHESTAT_MISS_FILES_CONTEXT "systemd.service.cachestat_misses" |
| 41 | |
| 42 | // variables |
| 43 | enum cachestat_counters { |
| 44 | NETDATA_KEY_CALLS_ADD_TO_PAGE_CACHE_LRU, |
| 45 | NETDATA_KEY_CALLS_MARK_PAGE_ACCESSED, |
| 46 | NETDATA_KEY_CALLS_ACCOUNT_PAGE_DIRTIED, |
| 47 | NETDATA_KEY_CALLS_MARK_BUFFER_DIRTY, |
| 48 | |
| 49 | NETDATA_CACHESTAT_END |
| 50 | }; |
| 51 | |
| 52 | enum cachestat_account_dirty_pages { |
| 53 | NETDATA_CACHESTAT_ACCOUNT_PAGE_DIRTY, |
| 54 | NETDATA_CACHESTAT_SET_PAGE_DIRTY, |
| 55 | NETDATA_CACHESTAT_FOLIO_DIRTY, |
| 56 | |
| 57 | NETDATA_CACHESTAT_ACCOUNT_DIRTY_END |
| 58 | }; |
| 59 | |
| 60 | enum cachestat_indexes { |
| 61 | NETDATA_CACHESTAT_IDX_RATIO, |
| 62 | NETDATA_CACHESTAT_IDX_DIRTY, |
| 63 | NETDATA_CACHESTAT_IDX_HIT, |
| 64 | NETDATA_CACHESTAT_IDX_MISS |
| 65 | }; |
| 66 | |
| 67 | enum cachestat_tables { NETDATA_CACHESTAT_GLOBAL_STATS, NETDATA_CACHESTAT_PID_STATS, NETDATA_CACHESTAT_CTRL }; |
| 68 | |
| 69 | void ebpf_cachestat_thread(void *ptr); |
| 70 | |
| 71 | extern struct config cachestat_config; |
| 72 | extern netdata_ebpf_targets_t cachestat_targets[]; |
| 73 | extern ebpf_local_maps_t cachestat_maps[]; |
| 74 | |
| 75 | #endif // NETDATA_EBPF_CACHESTAT_H |