1b2441318SGreg Kroah-Hartman // SPDX-License-Identifier: GPL-2.0 2cd82a32eSJiri Olsa #include <linux/list.h> 3c5de47f2SSukadev Bhattiprolu #include <linux/compiler.h> 432858480SArnaldo Carvalho de Melo #include <linux/string.h> 57f7c536fSArnaldo Carvalho de Melo #include <linux/zalloc.h> 6fa0d9846SArnaldo Carvalho de Melo #include <subcmd/pager.h> 7cd82a32eSJiri Olsa #include <sys/types.h> 8a43783aeSArnaldo Carvalho de Melo #include <errno.h> 9c23c2a0fSArnaldo Carvalho de Melo #include <fcntl.h> 107a8ef4c4SArnaldo Carvalho de Melo #include <sys/stat.h> 11cd82a32eSJiri Olsa #include <unistd.h> 12cd82a32eSJiri Olsa #include <stdio.h> 13dc0a6202SAdrian Hunter #include <stdbool.h> 147d4bdab5SAdrian Hunter #include <stdarg.h> 15cd82a32eSJiri Olsa #include <dirent.h> 16cd0cfad7SBorislav Petkov #include <api/fs/fs.h> 17410136f5SStephane Eranian #include <locale.h> 18fbc2844eSWilliam Cohen #include <regex.h> 199c3516d1SJiri Olsa #include <perf/cpumap.h> 205e51b0bbSArnaldo Carvalho de Melo #include "debug.h" 21cd82a32eSJiri Olsa #include "pmu.h" 22cd82a32eSJiri Olsa #include "parse-events.h" 23933f82ffSSukadev Bhattiprolu #include "header.h" 24a067558eSArnaldo Carvalho de Melo #include "string2.h" 25fa0d9846SArnaldo Carvalho de Melo #include "strbuf.h" 26d9664582SAndi Kleen #include "fncache.h" 27cd82a32eSJiri Olsa 28ab1bf653SArnaldo Carvalho de Melo struct perf_pmu_format { 29ab1bf653SArnaldo Carvalho de Melo char *name; 30ab1bf653SArnaldo Carvalho de Melo int value; 31ab1bf653SArnaldo Carvalho de Melo DECLARE_BITMAP(bits, PERF_PMU_FORMAT_BITS); 32ab1bf653SArnaldo Carvalho de Melo struct list_head list; 33ab1bf653SArnaldo Carvalho de Melo }; 34ab1bf653SArnaldo Carvalho de Melo 35cd82a32eSJiri Olsa int perf_pmu_parse(struct list_head *list, char *name); 36cd82a32eSJiri Olsa extern FILE *perf_pmu_in; 37cd82a32eSJiri Olsa 38cd82a32eSJiri Olsa static LIST_HEAD(pmus); 39cd82a32eSJiri Olsa 40cd82a32eSJiri Olsa /* 41cd82a32eSJiri Olsa * Parse & process all the sysfs attributes located under 42cd82a32eSJiri Olsa * the directory specified in 'dir' parameter. 43cd82a32eSJiri Olsa */ 44cff7f956SJiri Olsa int perf_pmu__format_parse(char *dir, struct list_head *head) 45cd82a32eSJiri Olsa { 46cd82a32eSJiri Olsa struct dirent *evt_ent; 47cd82a32eSJiri Olsa DIR *format_dir; 48cd82a32eSJiri Olsa int ret = 0; 49cd82a32eSJiri Olsa 50cd82a32eSJiri Olsa format_dir = opendir(dir); 51cd82a32eSJiri Olsa if (!format_dir) 52cd82a32eSJiri Olsa return -EINVAL; 53cd82a32eSJiri Olsa 54cd82a32eSJiri Olsa while (!ret && (evt_ent = readdir(format_dir))) { 55cd82a32eSJiri Olsa char path[PATH_MAX]; 56cd82a32eSJiri Olsa char *name = evt_ent->d_name; 57cd82a32eSJiri Olsa FILE *file; 58cd82a32eSJiri Olsa 59cd82a32eSJiri Olsa if (!strcmp(name, ".") || !strcmp(name, "..")) 60cd82a32eSJiri Olsa continue; 61cd82a32eSJiri Olsa 62cd82a32eSJiri Olsa snprintf(path, PATH_MAX, "%s/%s", dir, name); 63cd82a32eSJiri Olsa 64cd82a32eSJiri Olsa ret = -EINVAL; 65cd82a32eSJiri Olsa file = fopen(path, "r"); 66cd82a32eSJiri Olsa if (!file) 67cd82a32eSJiri Olsa break; 68cd82a32eSJiri Olsa 69cd82a32eSJiri Olsa perf_pmu_in = file; 70cd82a32eSJiri Olsa ret = perf_pmu_parse(head, name); 71cd82a32eSJiri Olsa fclose(file); 72cd82a32eSJiri Olsa } 73cd82a32eSJiri Olsa 74cd82a32eSJiri Olsa closedir(format_dir); 75cd82a32eSJiri Olsa return ret; 76cd82a32eSJiri Olsa } 77cd82a32eSJiri Olsa 78cd82a32eSJiri Olsa /* 79cd82a32eSJiri Olsa * Reading/parsing the default pmu format definition, which should be 80cd82a32eSJiri Olsa * located at: 81cd82a32eSJiri Olsa * /sys/bus/event_source/devices/<dev>/format as sysfs group attributes. 82cd82a32eSJiri Olsa */ 83b6b96fb4SAdrian Hunter static int pmu_format(const char *name, struct list_head *format) 84cd82a32eSJiri Olsa { 85cd82a32eSJiri Olsa char path[PATH_MAX]; 86cf38fadaSArnaldo Carvalho de Melo const char *sysfs = sysfs__mountpoint(); 87cd82a32eSJiri Olsa 88cd82a32eSJiri Olsa if (!sysfs) 89cd82a32eSJiri Olsa return -1; 90cd82a32eSJiri Olsa 91cd82a32eSJiri Olsa snprintf(path, PATH_MAX, 9250a9667cSRobert Richter "%s" EVENT_SOURCE_DEVICE_PATH "%s/format", sysfs, name); 93cd82a32eSJiri Olsa 94d9664582SAndi Kleen if (!file_available(path)) 95d9664582SAndi Kleen return 0; 96cd82a32eSJiri Olsa 97cff7f956SJiri Olsa if (perf_pmu__format_parse(path, format)) 98cd82a32eSJiri Olsa return -1; 99cd82a32eSJiri Olsa 100cd82a32eSJiri Olsa return 0; 101cd82a32eSJiri Olsa } 102cd82a32eSJiri Olsa 103a55ab7c4SJin Yao int perf_pmu__convert_scale(const char *scale, char **end, double *sval) 104d02fc6bcSAndi Kleen { 105d02fc6bcSAndi Kleen char *lc; 106d02fc6bcSAndi Kleen int ret = 0; 107d02fc6bcSAndi Kleen 108d02fc6bcSAndi Kleen /* 109d02fc6bcSAndi Kleen * save current locale 110d02fc6bcSAndi Kleen */ 111d02fc6bcSAndi Kleen lc = setlocale(LC_NUMERIC, NULL); 112d02fc6bcSAndi Kleen 113d02fc6bcSAndi Kleen /* 114d02fc6bcSAndi Kleen * The lc string may be allocated in static storage, 115d02fc6bcSAndi Kleen * so get a dynamic copy to make it survive setlocale 116d02fc6bcSAndi Kleen * call below. 117d02fc6bcSAndi Kleen */ 118d02fc6bcSAndi Kleen lc = strdup(lc); 119d02fc6bcSAndi Kleen if (!lc) { 120d02fc6bcSAndi Kleen ret = -ENOMEM; 121d02fc6bcSAndi Kleen goto out; 122d02fc6bcSAndi Kleen } 123d02fc6bcSAndi Kleen 124d02fc6bcSAndi Kleen /* 125d02fc6bcSAndi Kleen * force to C locale to ensure kernel 126d02fc6bcSAndi Kleen * scale string is converted correctly. 127d02fc6bcSAndi Kleen * kernel uses default C locale. 128d02fc6bcSAndi Kleen */ 129d02fc6bcSAndi Kleen setlocale(LC_NUMERIC, "C"); 130d02fc6bcSAndi Kleen 131d02fc6bcSAndi Kleen *sval = strtod(scale, end); 132d02fc6bcSAndi Kleen 133d02fc6bcSAndi Kleen out: 134d02fc6bcSAndi Kleen /* restore locale */ 135d02fc6bcSAndi Kleen setlocale(LC_NUMERIC, lc); 136d02fc6bcSAndi Kleen free(lc); 137d02fc6bcSAndi Kleen return ret; 138d02fc6bcSAndi Kleen } 139d02fc6bcSAndi Kleen 140410136f5SStephane Eranian static int perf_pmu__parse_scale(struct perf_pmu_alias *alias, char *dir, char *name) 141410136f5SStephane Eranian { 142410136f5SStephane Eranian struct stat st; 143410136f5SStephane Eranian ssize_t sret; 144410136f5SStephane Eranian char scale[128]; 145410136f5SStephane Eranian int fd, ret = -1; 146410136f5SStephane Eranian char path[PATH_MAX]; 147410136f5SStephane Eranian 14811a64a05SBen Hutchings scnprintf(path, PATH_MAX, "%s/%s.scale", dir, name); 149410136f5SStephane Eranian 150410136f5SStephane Eranian fd = open(path, O_RDONLY); 151410136f5SStephane Eranian if (fd == -1) 152410136f5SStephane Eranian return -1; 153410136f5SStephane Eranian 154410136f5SStephane Eranian if (fstat(fd, &st) < 0) 155410136f5SStephane Eranian goto error; 156410136f5SStephane Eranian 157410136f5SStephane Eranian sret = read(fd, scale, sizeof(scale)-1); 158410136f5SStephane Eranian if (sret < 0) 159410136f5SStephane Eranian goto error; 160410136f5SStephane Eranian 1619ecae065SMadhavan Srinivasan if (scale[sret - 1] == '\n') 1629ecae065SMadhavan Srinivasan scale[sret - 1] = '\0'; 1639ecae065SMadhavan Srinivasan else 164410136f5SStephane Eranian scale[sret] = '\0'; 1659ecae065SMadhavan Srinivasan 166a55ab7c4SJin Yao ret = perf_pmu__convert_scale(scale, NULL, &alias->scale); 167410136f5SStephane Eranian error: 168410136f5SStephane Eranian close(fd); 169410136f5SStephane Eranian return ret; 170410136f5SStephane Eranian } 171410136f5SStephane Eranian 172410136f5SStephane Eranian static int perf_pmu__parse_unit(struct perf_pmu_alias *alias, char *dir, char *name) 173410136f5SStephane Eranian { 174410136f5SStephane Eranian char path[PATH_MAX]; 175410136f5SStephane Eranian ssize_t sret; 176410136f5SStephane Eranian int fd; 177410136f5SStephane Eranian 17811a64a05SBen Hutchings scnprintf(path, PATH_MAX, "%s/%s.unit", dir, name); 179410136f5SStephane Eranian 180410136f5SStephane Eranian fd = open(path, O_RDONLY); 181410136f5SStephane Eranian if (fd == -1) 182410136f5SStephane Eranian return -1; 183410136f5SStephane Eranian 184410136f5SStephane Eranian sret = read(fd, alias->unit, UNIT_MAX_LEN); 185410136f5SStephane Eranian if (sret < 0) 186410136f5SStephane Eranian goto error; 187410136f5SStephane Eranian 188410136f5SStephane Eranian close(fd); 189410136f5SStephane Eranian 1909ecae065SMadhavan Srinivasan if (alias->unit[sret - 1] == '\n') 1919ecae065SMadhavan Srinivasan alias->unit[sret - 1] = '\0'; 1929ecae065SMadhavan Srinivasan else 193410136f5SStephane Eranian alias->unit[sret] = '\0'; 194410136f5SStephane Eranian 195410136f5SStephane Eranian return 0; 196410136f5SStephane Eranian error: 197410136f5SStephane Eranian close(fd); 198410136f5SStephane Eranian alias->unit[0] = '\0'; 199410136f5SStephane Eranian return -1; 200410136f5SStephane Eranian } 201410136f5SStephane Eranian 202044330c1SMatt Fleming static int 203044330c1SMatt Fleming perf_pmu__parse_per_pkg(struct perf_pmu_alias *alias, char *dir, char *name) 204044330c1SMatt Fleming { 205044330c1SMatt Fleming char path[PATH_MAX]; 206044330c1SMatt Fleming int fd; 207044330c1SMatt Fleming 20811a64a05SBen Hutchings scnprintf(path, PATH_MAX, "%s/%s.per-pkg", dir, name); 209044330c1SMatt Fleming 210044330c1SMatt Fleming fd = open(path, O_RDONLY); 211044330c1SMatt Fleming if (fd == -1) 212044330c1SMatt Fleming return -1; 213044330c1SMatt Fleming 214044330c1SMatt Fleming close(fd); 215044330c1SMatt Fleming 216044330c1SMatt Fleming alias->per_pkg = true; 217044330c1SMatt Fleming return 0; 218044330c1SMatt Fleming } 219044330c1SMatt Fleming 2201d9e446bSJiri Olsa static int perf_pmu__parse_snapshot(struct perf_pmu_alias *alias, 2211d9e446bSJiri Olsa char *dir, char *name) 2221d9e446bSJiri Olsa { 2231d9e446bSJiri Olsa char path[PATH_MAX]; 2241d9e446bSJiri Olsa int fd; 2251d9e446bSJiri Olsa 22611a64a05SBen Hutchings scnprintf(path, PATH_MAX, "%s/%s.snapshot", dir, name); 2271d9e446bSJiri Olsa 2281d9e446bSJiri Olsa fd = open(path, O_RDONLY); 2291d9e446bSJiri Olsa if (fd == -1) 2301d9e446bSJiri Olsa return -1; 2311d9e446bSJiri Olsa 2321d9e446bSJiri Olsa alias->snapshot = true; 2331d9e446bSJiri Olsa close(fd); 2341d9e446bSJiri Olsa return 0; 2351d9e446bSJiri Olsa } 2361d9e446bSJiri Olsa 2376dde6429SThomas Richter static void perf_pmu_assign_str(char *name, const char *field, char **old_str, 2386dde6429SThomas Richter char **new_str) 2396dde6429SThomas Richter { 2406dde6429SThomas Richter if (!*old_str) 2416dde6429SThomas Richter goto set_new; 2426dde6429SThomas Richter 2436dde6429SThomas Richter if (*new_str) { /* Have new string, check with old */ 2446dde6429SThomas Richter if (strcasecmp(*old_str, *new_str)) 2456dde6429SThomas Richter pr_debug("alias %s differs in field '%s'\n", 2466dde6429SThomas Richter name, field); 2476dde6429SThomas Richter zfree(old_str); 2486dde6429SThomas Richter } else /* Nothing new --> keep old string */ 2496dde6429SThomas Richter return; 2506dde6429SThomas Richter set_new: 2516dde6429SThomas Richter *old_str = *new_str; 2526dde6429SThomas Richter *new_str = NULL; 2536dde6429SThomas Richter } 2546dde6429SThomas Richter 2556dde6429SThomas Richter static void perf_pmu_update_alias(struct perf_pmu_alias *old, 2566dde6429SThomas Richter struct perf_pmu_alias *newalias) 2576dde6429SThomas Richter { 2586dde6429SThomas Richter perf_pmu_assign_str(old->name, "desc", &old->desc, &newalias->desc); 2596dde6429SThomas Richter perf_pmu_assign_str(old->name, "long_desc", &old->long_desc, 2606dde6429SThomas Richter &newalias->long_desc); 2616dde6429SThomas Richter perf_pmu_assign_str(old->name, "topic", &old->topic, &newalias->topic); 2626dde6429SThomas Richter perf_pmu_assign_str(old->name, "metric_expr", &old->metric_expr, 2636dde6429SThomas Richter &newalias->metric_expr); 2646dde6429SThomas Richter perf_pmu_assign_str(old->name, "metric_name", &old->metric_name, 2656dde6429SThomas Richter &newalias->metric_name); 2666dde6429SThomas Richter perf_pmu_assign_str(old->name, "value", &old->str, &newalias->str); 2676dde6429SThomas Richter old->scale = newalias->scale; 2686dde6429SThomas Richter old->per_pkg = newalias->per_pkg; 2696dde6429SThomas Richter old->snapshot = newalias->snapshot; 2706dde6429SThomas Richter memcpy(old->unit, newalias->unit, sizeof(old->unit)); 2716dde6429SThomas Richter } 2726dde6429SThomas Richter 2736dde6429SThomas Richter /* Delete an alias entry. */ 2746dde6429SThomas Richter static void perf_pmu_free_alias(struct perf_pmu_alias *newalias) 2756dde6429SThomas Richter { 2766dde6429SThomas Richter zfree(&newalias->name); 2776dde6429SThomas Richter zfree(&newalias->desc); 2786dde6429SThomas Richter zfree(&newalias->long_desc); 2796dde6429SThomas Richter zfree(&newalias->topic); 2806dde6429SThomas Richter zfree(&newalias->str); 2816dde6429SThomas Richter zfree(&newalias->metric_expr); 2826dde6429SThomas Richter zfree(&newalias->metric_name); 2836dde6429SThomas Richter parse_events_terms__purge(&newalias->terms); 2846dde6429SThomas Richter free(newalias); 2856dde6429SThomas Richter } 2866dde6429SThomas Richter 2876dde6429SThomas Richter /* Merge an alias, search in alias list. If this name is already 2886dde6429SThomas Richter * present merge both of them to combine all information. 2896dde6429SThomas Richter */ 2906dde6429SThomas Richter static bool perf_pmu_merge_alias(struct perf_pmu_alias *newalias, 2916dde6429SThomas Richter struct list_head *alist) 2926dde6429SThomas Richter { 2936dde6429SThomas Richter struct perf_pmu_alias *a; 2946dde6429SThomas Richter 2956dde6429SThomas Richter list_for_each_entry(a, alist, list) { 2966dde6429SThomas Richter if (!strcasecmp(newalias->name, a->name)) { 2976dde6429SThomas Richter perf_pmu_update_alias(a, newalias); 2986dde6429SThomas Richter perf_pmu_free_alias(newalias); 2996dde6429SThomas Richter return true; 3006dde6429SThomas Richter } 3016dde6429SThomas Richter } 3026dde6429SThomas Richter return false; 3036dde6429SThomas Richter } 3046dde6429SThomas Richter 30570c646e0SSukadev Bhattiprolu static int __perf_pmu__new_alias(struct list_head *list, char *dir, char *name, 306fedb2b51SAndi Kleen char *desc, char *val, 307fedb2b51SAndi Kleen char *long_desc, char *topic, 30800636c3bSAndi Kleen char *unit, char *perpkg, 30996284814SAndi Kleen char *metric_expr, 310a7f6c8c8SJin Yao char *metric_name, 311a7f6c8c8SJin Yao char *deprecated) 312a6146d50SZheng Yan { 3130c24d6fbSThomas Richter struct parse_events_term *term; 3145c6ccc37SArnaldo Carvalho de Melo struct perf_pmu_alias *alias; 315a6146d50SZheng Yan int ret; 316fedb2b51SAndi Kleen int num; 3170c24d6fbSThomas Richter char newval[256]; 318a6146d50SZheng Yan 319a6146d50SZheng Yan alias = malloc(sizeof(*alias)); 320a6146d50SZheng Yan if (!alias) 321a6146d50SZheng Yan return -ENOMEM; 322a6146d50SZheng Yan 323a6146d50SZheng Yan INIT_LIST_HEAD(&alias->terms); 324410136f5SStephane Eranian alias->scale = 1.0; 325410136f5SStephane Eranian alias->unit[0] = '\0'; 326044330c1SMatt Fleming alias->per_pkg = false; 32784530920SStephane Eranian alias->snapshot = false; 328a7f6c8c8SJin Yao alias->deprecated = false; 329410136f5SStephane Eranian 33070c646e0SSukadev Bhattiprolu ret = parse_events_terms(&alias->terms, val); 331a6146d50SZheng Yan if (ret) { 33270c646e0SSukadev Bhattiprolu pr_err("Cannot parse alias %s: %d\n", val, ret); 333a6146d50SZheng Yan free(alias); 334a6146d50SZheng Yan return ret; 335a6146d50SZheng Yan } 336a6146d50SZheng Yan 3370c24d6fbSThomas Richter /* Scan event and remove leading zeroes, spaces, newlines, some 3380c24d6fbSThomas Richter * platforms have terms specified as 3390c24d6fbSThomas Richter * event=0x0091 (read from files ../<PMU>/events/<FILE> 3400c24d6fbSThomas Richter * and terms specified as event=0x91 (read from JSON files). 3410c24d6fbSThomas Richter * 3420c24d6fbSThomas Richter * Rebuild string to make alias->str member comparable. 3430c24d6fbSThomas Richter */ 3440c24d6fbSThomas Richter memset(newval, 0, sizeof(newval)); 3450c24d6fbSThomas Richter ret = 0; 3460c24d6fbSThomas Richter list_for_each_entry(term, &alias->terms, list) { 3470c24d6fbSThomas Richter if (ret) 3480c24d6fbSThomas Richter ret += scnprintf(newval + ret, sizeof(newval) - ret, 3490c24d6fbSThomas Richter ","); 3500c24d6fbSThomas Richter if (term->type_val == PARSE_EVENTS__TERM_TYPE_NUM) 3510c24d6fbSThomas Richter ret += scnprintf(newval + ret, sizeof(newval) - ret, 3520c24d6fbSThomas Richter "%s=%#x", term->config, term->val.num); 3530c24d6fbSThomas Richter else if (term->type_val == PARSE_EVENTS__TERM_TYPE_STR) 3540c24d6fbSThomas Richter ret += scnprintf(newval + ret, sizeof(newval) - ret, 3550c24d6fbSThomas Richter "%s=%s", term->config, term->val.str); 3560c24d6fbSThomas Richter } 3570c24d6fbSThomas Richter 358a6146d50SZheng Yan alias->name = strdup(name); 35970c646e0SSukadev Bhattiprolu if (dir) { 360410136f5SStephane Eranian /* 361410136f5SStephane Eranian * load unit name and scale if available 362410136f5SStephane Eranian */ 363410136f5SStephane Eranian perf_pmu__parse_unit(alias, dir, name); 364410136f5SStephane Eranian perf_pmu__parse_scale(alias, dir, name); 365044330c1SMatt Fleming perf_pmu__parse_per_pkg(alias, dir, name); 3661d9e446bSJiri Olsa perf_pmu__parse_snapshot(alias, dir, name); 36770c646e0SSukadev Bhattiprolu } 368410136f5SStephane Eranian 36900636c3bSAndi Kleen alias->metric_expr = metric_expr ? strdup(metric_expr) : NULL; 37096284814SAndi Kleen alias->metric_name = metric_name ? strdup(metric_name): NULL; 37108e60ed1SAndi Kleen alias->desc = desc ? strdup(desc) : NULL; 372c8d6828aSSukadev Bhattiprolu alias->long_desc = long_desc ? strdup(long_desc) : 373c8d6828aSSukadev Bhattiprolu desc ? strdup(desc) : NULL; 374dd5f1036SAndi Kleen alias->topic = topic ? strdup(topic) : NULL; 375fedb2b51SAndi Kleen if (unit) { 376a55ab7c4SJin Yao if (perf_pmu__convert_scale(unit, &unit, &alias->scale) < 0) 377fedb2b51SAndi Kleen return -1; 378fedb2b51SAndi Kleen snprintf(alias->unit, sizeof(alias->unit), "%s", unit); 379fedb2b51SAndi Kleen } 380fedb2b51SAndi Kleen alias->per_pkg = perpkg && sscanf(perpkg, "%d", &num) == 1 && num == 1; 3810c24d6fbSThomas Richter alias->str = strdup(newval); 382f2361024SAndi Kleen 383a7f6c8c8SJin Yao if (deprecated) 384a7f6c8c8SJin Yao alias->deprecated = true; 385a7f6c8c8SJin Yao 3866dde6429SThomas Richter if (!perf_pmu_merge_alias(alias, list)) 387a6146d50SZheng Yan list_add_tail(&alias->list, list); 388410136f5SStephane Eranian 389a6146d50SZheng Yan return 0; 390a6146d50SZheng Yan } 391a6146d50SZheng Yan 39270c646e0SSukadev Bhattiprolu static int perf_pmu__new_alias(struct list_head *list, char *dir, char *name, FILE *file) 39370c646e0SSukadev Bhattiprolu { 39470c646e0SSukadev Bhattiprolu char buf[256]; 39570c646e0SSukadev Bhattiprolu int ret; 39670c646e0SSukadev Bhattiprolu 39770c646e0SSukadev Bhattiprolu ret = fread(buf, 1, sizeof(buf), file); 39870c646e0SSukadev Bhattiprolu if (ret == 0) 39970c646e0SSukadev Bhattiprolu return -EINVAL; 40070c646e0SSukadev Bhattiprolu 40170c646e0SSukadev Bhattiprolu buf[ret] = 0; 40270c646e0SSukadev Bhattiprolu 403ea23ac73SThomas Richter /* Remove trailing newline from sysfs file */ 40413c230abSArnaldo Carvalho de Melo strim(buf); 405ea23ac73SThomas Richter 406fedb2b51SAndi Kleen return __perf_pmu__new_alias(list, dir, name, NULL, buf, NULL, NULL, NULL, 407a7f6c8c8SJin Yao NULL, NULL, NULL, NULL); 40870c646e0SSukadev Bhattiprolu } 40970c646e0SSukadev Bhattiprolu 41046441bdcSMatt Fleming static inline bool pmu_alias_info_file(char *name) 41146441bdcSMatt Fleming { 41246441bdcSMatt Fleming size_t len; 41346441bdcSMatt Fleming 41446441bdcSMatt Fleming len = strlen(name); 41546441bdcSMatt Fleming if (len > 5 && !strcmp(name + len - 5, ".unit")) 41646441bdcSMatt Fleming return true; 41746441bdcSMatt Fleming if (len > 6 && !strcmp(name + len - 6, ".scale")) 41846441bdcSMatt Fleming return true; 419044330c1SMatt Fleming if (len > 8 && !strcmp(name + len - 8, ".per-pkg")) 420044330c1SMatt Fleming return true; 4211d9e446bSJiri Olsa if (len > 9 && !strcmp(name + len - 9, ".snapshot")) 4221d9e446bSJiri Olsa return true; 42346441bdcSMatt Fleming 42446441bdcSMatt Fleming return false; 42546441bdcSMatt Fleming } 42646441bdcSMatt Fleming 427a6146d50SZheng Yan /* 428a6146d50SZheng Yan * Process all the sysfs attributes located under the directory 429a6146d50SZheng Yan * specified in 'dir' parameter. 430a6146d50SZheng Yan */ 431a6146d50SZheng Yan static int pmu_aliases_parse(char *dir, struct list_head *head) 432a6146d50SZheng Yan { 433a6146d50SZheng Yan struct dirent *evt_ent; 434a6146d50SZheng Yan DIR *event_dir; 435a6146d50SZheng Yan 436a6146d50SZheng Yan event_dir = opendir(dir); 437a6146d50SZheng Yan if (!event_dir) 438a6146d50SZheng Yan return -EINVAL; 439a6146d50SZheng Yan 440940db6dcSAndi Kleen while ((evt_ent = readdir(event_dir))) { 441a6146d50SZheng Yan char path[PATH_MAX]; 442a6146d50SZheng Yan char *name = evt_ent->d_name; 443a6146d50SZheng Yan FILE *file; 444a6146d50SZheng Yan 445a6146d50SZheng Yan if (!strcmp(name, ".") || !strcmp(name, "..")) 446a6146d50SZheng Yan continue; 447a6146d50SZheng Yan 448410136f5SStephane Eranian /* 44946441bdcSMatt Fleming * skip info files parsed in perf_pmu__new_alias() 450410136f5SStephane Eranian */ 45146441bdcSMatt Fleming if (pmu_alias_info_file(name)) 452410136f5SStephane Eranian continue; 453410136f5SStephane Eranian 45477f18153SJiri Olsa scnprintf(path, PATH_MAX, "%s/%s", dir, name); 455a6146d50SZheng Yan 456a6146d50SZheng Yan file = fopen(path, "r"); 457940db6dcSAndi Kleen if (!file) { 458940db6dcSAndi Kleen pr_debug("Cannot open %s\n", path); 459940db6dcSAndi Kleen continue; 460940db6dcSAndi Kleen } 461410136f5SStephane Eranian 462940db6dcSAndi Kleen if (perf_pmu__new_alias(head, dir, name, file) < 0) 463940db6dcSAndi Kleen pr_debug("Cannot set up %s\n", name); 464a6146d50SZheng Yan fclose(file); 465a6146d50SZheng Yan } 466a6146d50SZheng Yan 467a6146d50SZheng Yan closedir(event_dir); 468940db6dcSAndi Kleen return 0; 469a6146d50SZheng Yan } 470a6146d50SZheng Yan 471a6146d50SZheng Yan /* 472a6146d50SZheng Yan * Reading the pmu event aliases definition, which should be located at: 473a6146d50SZheng Yan * /sys/bus/event_source/devices/<dev>/events as sysfs group attributes. 474a6146d50SZheng Yan */ 475b6b96fb4SAdrian Hunter static int pmu_aliases(const char *name, struct list_head *head) 476a6146d50SZheng Yan { 477a6146d50SZheng Yan char path[PATH_MAX]; 478cf38fadaSArnaldo Carvalho de Melo const char *sysfs = sysfs__mountpoint(); 479a6146d50SZheng Yan 480a6146d50SZheng Yan if (!sysfs) 481a6146d50SZheng Yan return -1; 482a6146d50SZheng Yan 483a6146d50SZheng Yan snprintf(path, PATH_MAX, 484a6146d50SZheng Yan "%s/bus/event_source/devices/%s/events", sysfs, name); 485a6146d50SZheng Yan 486d9664582SAndi Kleen if (!file_available(path)) 487d9664582SAndi Kleen return 0; 488a6146d50SZheng Yan 489a6146d50SZheng Yan if (pmu_aliases_parse(path, head)) 490a6146d50SZheng Yan return -1; 491a6146d50SZheng Yan 492a6146d50SZheng Yan return 0; 493a6146d50SZheng Yan } 494a6146d50SZheng Yan 4955c6ccc37SArnaldo Carvalho de Melo static int pmu_alias_terms(struct perf_pmu_alias *alias, 496a6146d50SZheng Yan struct list_head *terms) 497a6146d50SZheng Yan { 4987c2f8164SJiri Olsa struct parse_events_term *term, *cloned; 499a6146d50SZheng Yan LIST_HEAD(list); 500a6146d50SZheng Yan int ret; 501a6146d50SZheng Yan 502a6146d50SZheng Yan list_for_each_entry(term, &alias->terms, list) { 5037c2f8164SJiri Olsa ret = parse_events_term__clone(&cloned, term); 504a6146d50SZheng Yan if (ret) { 505682dc24cSArnaldo Carvalho de Melo parse_events_terms__purge(&list); 506a6146d50SZheng Yan return ret; 507a6146d50SZheng Yan } 508c2f1ceadSAndi Kleen /* 509c2f1ceadSAndi Kleen * Weak terms don't override command line options, 510c2f1ceadSAndi Kleen * which we don't want for implicit terms in aliases. 511c2f1ceadSAndi Kleen */ 512c2f1ceadSAndi Kleen cloned->weak = true; 5137c2f8164SJiri Olsa list_add_tail(&cloned->list, &list); 514a6146d50SZheng Yan } 515a6146d50SZheng Yan list_splice(&list, terms); 516a6146d50SZheng Yan return 0; 517a6146d50SZheng Yan } 518a6146d50SZheng Yan 519cd82a32eSJiri Olsa /* 520cd82a32eSJiri Olsa * Reading/parsing the default pmu type value, which should be 521cd82a32eSJiri Olsa * located at: 522cd82a32eSJiri Olsa * /sys/bus/event_source/devices/<dev>/type as sysfs attribute. 523cd82a32eSJiri Olsa */ 524b6b96fb4SAdrian Hunter static int pmu_type(const char *name, __u32 *type) 525cd82a32eSJiri Olsa { 526cd82a32eSJiri Olsa char path[PATH_MAX]; 527cd82a32eSJiri Olsa FILE *file; 528cd82a32eSJiri Olsa int ret = 0; 529cf38fadaSArnaldo Carvalho de Melo const char *sysfs = sysfs__mountpoint(); 530cd82a32eSJiri Olsa 531cd82a32eSJiri Olsa if (!sysfs) 532cd82a32eSJiri Olsa return -1; 533cd82a32eSJiri Olsa 534cd82a32eSJiri Olsa snprintf(path, PATH_MAX, 53550a9667cSRobert Richter "%s" EVENT_SOURCE_DEVICE_PATH "%s/type", sysfs, name); 536cd82a32eSJiri Olsa 537d9664582SAndi Kleen if (access(path, R_OK) < 0) 538cd82a32eSJiri Olsa return -1; 539cd82a32eSJiri Olsa 540cd82a32eSJiri Olsa file = fopen(path, "r"); 541cd82a32eSJiri Olsa if (!file) 542cd82a32eSJiri Olsa return -EINVAL; 543cd82a32eSJiri Olsa 544cd82a32eSJiri Olsa if (1 != fscanf(file, "%u", type)) 545cd82a32eSJiri Olsa ret = -1; 546cd82a32eSJiri Olsa 547cd82a32eSJiri Olsa fclose(file); 548cd82a32eSJiri Olsa return ret; 549cd82a32eSJiri Olsa } 550cd82a32eSJiri Olsa 55150a9667cSRobert Richter /* Add all pmus in sysfs to pmu list: */ 55250a9667cSRobert Richter static void pmu_read_sysfs(void) 55350a9667cSRobert Richter { 55450a9667cSRobert Richter char path[PATH_MAX]; 55550a9667cSRobert Richter DIR *dir; 55650a9667cSRobert Richter struct dirent *dent; 557cf38fadaSArnaldo Carvalho de Melo const char *sysfs = sysfs__mountpoint(); 55850a9667cSRobert Richter 55950a9667cSRobert Richter if (!sysfs) 56050a9667cSRobert Richter return; 56150a9667cSRobert Richter 56250a9667cSRobert Richter snprintf(path, PATH_MAX, 56350a9667cSRobert Richter "%s" EVENT_SOURCE_DEVICE_PATH, sysfs); 56450a9667cSRobert Richter 56550a9667cSRobert Richter dir = opendir(path); 56650a9667cSRobert Richter if (!dir) 56750a9667cSRobert Richter return; 56850a9667cSRobert Richter 56950a9667cSRobert Richter while ((dent = readdir(dir))) { 57050a9667cSRobert Richter if (!strcmp(dent->d_name, ".") || !strcmp(dent->d_name, "..")) 57150a9667cSRobert Richter continue; 57250a9667cSRobert Richter /* add to static LIST_HEAD(pmus): */ 57350a9667cSRobert Richter perf_pmu__find(dent->d_name); 57450a9667cSRobert Richter } 57550a9667cSRobert Richter 57650a9667cSRobert Richter closedir(dir); 57750a9667cSRobert Richter } 57850a9667cSRobert Richter 579f854839bSJiri Olsa static struct perf_cpu_map *__pmu_cpumask(const char *path) 58066ec1191SMark Rutland { 58166ec1191SMark Rutland FILE *file; 582f854839bSJiri Olsa struct perf_cpu_map *cpus; 58366ec1191SMark Rutland 58466ec1191SMark Rutland file = fopen(path, "r"); 58566ec1191SMark Rutland if (!file) 58666ec1191SMark Rutland return NULL; 58766ec1191SMark Rutland 5889c3516d1SJiri Olsa cpus = perf_cpu_map__read(file); 58966ec1191SMark Rutland fclose(file); 59066ec1191SMark Rutland return cpus; 59166ec1191SMark Rutland } 59266ec1191SMark Rutland 59366ec1191SMark Rutland /* 59466ec1191SMark Rutland * Uncore PMUs have a "cpumask" file under sysfs. CPU PMUs (e.g. on arm/arm64) 59566ec1191SMark Rutland * may have a "cpus" file. 59666ec1191SMark Rutland */ 59766ec1191SMark Rutland #define CPUS_TEMPLATE_UNCORE "%s/bus/event_source/devices/%s/cpumask" 59866ec1191SMark Rutland #define CPUS_TEMPLATE_CPU "%s/bus/event_source/devices/%s/cpus" 59966ec1191SMark Rutland 600f854839bSJiri Olsa static struct perf_cpu_map *pmu_cpumask(const char *name) 6017ae92e74SYan, Zheng { 6027ae92e74SYan, Zheng char path[PATH_MAX]; 603f854839bSJiri Olsa struct perf_cpu_map *cpus; 604cf38fadaSArnaldo Carvalho de Melo const char *sysfs = sysfs__mountpoint(); 6057e3fcffeSMark Rutland const char *templates[] = { 60666ec1191SMark Rutland CPUS_TEMPLATE_UNCORE, 60766ec1191SMark Rutland CPUS_TEMPLATE_CPU, 6087e3fcffeSMark Rutland NULL 6097e3fcffeSMark Rutland }; 6107e3fcffeSMark Rutland const char **template; 6117ae92e74SYan, Zheng 6127ae92e74SYan, Zheng if (!sysfs) 6137ae92e74SYan, Zheng return NULL; 6147ae92e74SYan, Zheng 6157e3fcffeSMark Rutland for (template = templates; *template; template++) { 6167e3fcffeSMark Rutland snprintf(path, PATH_MAX, *template, sysfs, name); 61766ec1191SMark Rutland cpus = __pmu_cpumask(path); 61866ec1191SMark Rutland if (cpus) 61966ec1191SMark Rutland return cpus; 6207e3fcffeSMark Rutland } 6217ae92e74SYan, Zheng 6227ae92e74SYan, Zheng return NULL; 62366ec1191SMark Rutland } 6247ae92e74SYan, Zheng 62566ec1191SMark Rutland static bool pmu_is_uncore(const char *name) 62666ec1191SMark Rutland { 62766ec1191SMark Rutland char path[PATH_MAX]; 628d9664582SAndi Kleen const char *sysfs; 6297ae92e74SYan, Zheng 630d9664582SAndi Kleen sysfs = sysfs__mountpoint(); 63166ec1191SMark Rutland snprintf(path, PATH_MAX, CPUS_TEMPLATE_UNCORE, sysfs, name); 632d9664582SAndi Kleen return file_available(path); 6337ae92e74SYan, Zheng } 6347ae92e74SYan, Zheng 635933f82ffSSukadev Bhattiprolu /* 63614b22ae0SGanapatrao Kulkarni * PMU CORE devices have different name other than cpu in sysfs on some 637292c34c1SKan Liang * platforms. 638292c34c1SKan Liang * Looking for possible sysfs files to identify the arm core device. 63914b22ae0SGanapatrao Kulkarni */ 640292c34c1SKan Liang static int is_arm_pmu_core(const char *name) 64114b22ae0SGanapatrao Kulkarni { 64214b22ae0SGanapatrao Kulkarni char path[PATH_MAX]; 64314b22ae0SGanapatrao Kulkarni const char *sysfs = sysfs__mountpoint(); 64414b22ae0SGanapatrao Kulkarni 64514b22ae0SGanapatrao Kulkarni if (!sysfs) 64614b22ae0SGanapatrao Kulkarni return 0; 64714b22ae0SGanapatrao Kulkarni 64814b22ae0SGanapatrao Kulkarni /* Look for cpu sysfs (specific to arm) */ 64914b22ae0SGanapatrao Kulkarni scnprintf(path, PATH_MAX, "%s/bus/event_source/devices/%s/cpus", 65014b22ae0SGanapatrao Kulkarni sysfs, name); 651d9664582SAndi Kleen return file_available(path); 65214b22ae0SGanapatrao Kulkarni } 65314b22ae0SGanapatrao Kulkarni 65454e32dc0SGanapatrao Kulkarni static char *perf_pmu__getcpuid(struct perf_pmu *pmu) 655d77ade9fSAndi Kleen { 656d77ade9fSAndi Kleen char *cpuid; 657d77ade9fSAndi Kleen static bool printed; 658d77ade9fSAndi Kleen 659d77ade9fSAndi Kleen cpuid = getenv("PERF_CPUID"); 660d77ade9fSAndi Kleen if (cpuid) 661d77ade9fSAndi Kleen cpuid = strdup(cpuid); 662d77ade9fSAndi Kleen if (!cpuid) 66354e32dc0SGanapatrao Kulkarni cpuid = get_cpuid_str(pmu); 664d77ade9fSAndi Kleen if (!cpuid) 665d77ade9fSAndi Kleen return NULL; 666d77ade9fSAndi Kleen 667d77ade9fSAndi Kleen if (!printed) { 668d77ade9fSAndi Kleen pr_debug("Using CPUID %s\n", cpuid); 669d77ade9fSAndi Kleen printed = true; 670d77ade9fSAndi Kleen } 671d77ade9fSAndi Kleen return cpuid; 672d77ade9fSAndi Kleen } 673d77ade9fSAndi Kleen 67454e32dc0SGanapatrao Kulkarni struct pmu_events_map *perf_pmu__find_map(struct perf_pmu *pmu) 675d77ade9fSAndi Kleen { 676d77ade9fSAndi Kleen struct pmu_events_map *map; 67754e32dc0SGanapatrao Kulkarni char *cpuid = perf_pmu__getcpuid(pmu); 678d77ade9fSAndi Kleen int i; 679d77ade9fSAndi Kleen 680de3d0f12SGanapatrao Kulkarni /* on some platforms which uses cpus map, cpuid can be NULL for 681de3d0f12SGanapatrao Kulkarni * PMUs other than CORE PMUs. 682de3d0f12SGanapatrao Kulkarni */ 683de3d0f12SGanapatrao Kulkarni if (!cpuid) 684de3d0f12SGanapatrao Kulkarni return NULL; 685de3d0f12SGanapatrao Kulkarni 686d77ade9fSAndi Kleen i = 0; 687d77ade9fSAndi Kleen for (;;) { 688d77ade9fSAndi Kleen map = &pmu_events_map[i++]; 689d77ade9fSAndi Kleen if (!map->table) { 690d77ade9fSAndi Kleen map = NULL; 691d77ade9fSAndi Kleen break; 692d77ade9fSAndi Kleen } 693d77ade9fSAndi Kleen 6944cb7d3ecSThomas Richter if (!strcmp_cpuid_str(map->cpuid, cpuid)) 695d77ade9fSAndi Kleen break; 696d77ade9fSAndi Kleen } 697d77ade9fSAndi Kleen free(cpuid); 698d77ade9fSAndi Kleen return map; 699d77ade9fSAndi Kleen } 700d77ade9fSAndi Kleen 701730670b1SJohn Garry static bool pmu_uncore_alias_match(const char *pmu_name, const char *name) 702730670b1SJohn Garry { 703730670b1SJohn Garry char *tmp = NULL, *tok, *str; 704730670b1SJohn Garry bool res; 705730670b1SJohn Garry 706730670b1SJohn Garry str = strdup(pmu_name); 707730670b1SJohn Garry if (!str) 708730670b1SJohn Garry return false; 709730670b1SJohn Garry 710730670b1SJohn Garry /* 711730670b1SJohn Garry * uncore alias may be from different PMU with common prefix 712730670b1SJohn Garry */ 713730670b1SJohn Garry tok = strtok_r(str, ",", &tmp); 714730670b1SJohn Garry if (strncmp(pmu_name, tok, strlen(tok))) { 715730670b1SJohn Garry res = false; 716730670b1SJohn Garry goto out; 717730670b1SJohn Garry } 718730670b1SJohn Garry 719730670b1SJohn Garry /* 720730670b1SJohn Garry * Match more complex aliases where the alias name is a comma-delimited 721730670b1SJohn Garry * list of tokens, orderly contained in the matching PMU name. 722730670b1SJohn Garry * 723730670b1SJohn Garry * Example: For alias "socket,pmuname" and PMU "socketX_pmunameY", we 724730670b1SJohn Garry * match "socket" in "socketX_pmunameY" and then "pmuname" in 725730670b1SJohn Garry * "pmunameY". 726730670b1SJohn Garry */ 727730670b1SJohn Garry for (; tok; name += strlen(tok), tok = strtok_r(NULL, ",", &tmp)) { 728730670b1SJohn Garry name = strstr(name, tok); 729730670b1SJohn Garry if (!name) { 730730670b1SJohn Garry res = false; 731730670b1SJohn Garry goto out; 732730670b1SJohn Garry } 733730670b1SJohn Garry } 734730670b1SJohn Garry 735730670b1SJohn Garry res = true; 736730670b1SJohn Garry out: 737730670b1SJohn Garry free(str); 738730670b1SJohn Garry return res; 739730670b1SJohn Garry } 740730670b1SJohn Garry 741933f82ffSSukadev Bhattiprolu /* 742933f82ffSSukadev Bhattiprolu * From the pmu_events_map, find the table of PMU events that corresponds 743933f82ffSSukadev Bhattiprolu * to the current running CPU. Then, add all PMU events from that table 744933f82ffSSukadev Bhattiprolu * as aliases. 745933f82ffSSukadev Bhattiprolu */ 746e45ad701SJohn Garry void pmu_add_cpu_aliases_map(struct list_head *head, struct perf_pmu *pmu, 747e45ad701SJohn Garry struct pmu_events_map *map) 748933f82ffSSukadev Bhattiprolu { 749933f82ffSSukadev Bhattiprolu int i; 75054e32dc0SGanapatrao Kulkarni const char *name = pmu->name; 751933f82ffSSukadev Bhattiprolu /* 752933f82ffSSukadev Bhattiprolu * Found a matching PMU events table. Create aliases 753933f82ffSSukadev Bhattiprolu */ 754933f82ffSSukadev Bhattiprolu i = 0; 755933f82ffSSukadev Bhattiprolu while (1) { 756599ee18fSJohn Garry const char *cpu_name = is_arm_pmu_core(name) ? name : "cpu"; 757599ee18fSJohn Garry struct pmu_event *pe = &map->table[i++]; 758599ee18fSJohn Garry const char *pname = pe->pmu ? pe->pmu : cpu_name; 759fedb2b51SAndi Kleen 760b18f3e36SAndi Kleen if (!pe->name) { 761b18f3e36SAndi Kleen if (pe->metric_group || pe->metric_name) 762b18f3e36SAndi Kleen continue; 763933f82ffSSukadev Bhattiprolu break; 764b18f3e36SAndi Kleen } 765933f82ffSSukadev Bhattiprolu 766e94d6b7fSKan Liang if (pmu_is_uncore(name) && 767730670b1SJohn Garry pmu_uncore_alias_match(pname, name)) 768e94d6b7fSKan Liang goto new_alias; 769e94d6b7fSKan Liang 770ea1fa48cSThomas Richter if (strcmp(pname, name)) 77114b22ae0SGanapatrao Kulkarni continue; 772fedb2b51SAndi Kleen 773e94d6b7fSKan Liang new_alias: 774933f82ffSSukadev Bhattiprolu /* need type casts to override 'const' */ 775933f82ffSSukadev Bhattiprolu __perf_pmu__new_alias(head, NULL, (char *)pe->name, 776c8d6828aSSukadev Bhattiprolu (char *)pe->desc, (char *)pe->event, 777fedb2b51SAndi Kleen (char *)pe->long_desc, (char *)pe->topic, 77800636c3bSAndi Kleen (char *)pe->unit, (char *)pe->perpkg, 77996284814SAndi Kleen (char *)pe->metric_expr, 780a7f6c8c8SJin Yao (char *)pe->metric_name, 781a7f6c8c8SJin Yao (char *)pe->deprecated); 782933f82ffSSukadev Bhattiprolu } 783933f82ffSSukadev Bhattiprolu } 784933f82ffSSukadev Bhattiprolu 785e45ad701SJohn Garry static void pmu_add_cpu_aliases(struct list_head *head, struct perf_pmu *pmu) 786e45ad701SJohn Garry { 787e45ad701SJohn Garry struct pmu_events_map *map; 788e45ad701SJohn Garry 789e45ad701SJohn Garry map = perf_pmu__find_map(pmu); 790e45ad701SJohn Garry if (!map) 791e45ad701SJohn Garry return; 792e45ad701SJohn Garry 793e45ad701SJohn Garry pmu_add_cpu_aliases_map(head, pmu, map); 794e45ad701SJohn Garry } 795e45ad701SJohn Garry 796c5de47f2SSukadev Bhattiprolu struct perf_event_attr * __weak 797dc0a6202SAdrian Hunter perf_pmu__get_default_config(struct perf_pmu *pmu __maybe_unused) 798dc0a6202SAdrian Hunter { 799dc0a6202SAdrian Hunter return NULL; 800dc0a6202SAdrian Hunter } 801dc0a6202SAdrian Hunter 80290a86bdeSJiri Olsa static int pmu_max_precise(const char *name) 80390a86bdeSJiri Olsa { 80490a86bdeSJiri Olsa char path[PATH_MAX]; 80590a86bdeSJiri Olsa int max_precise = -1; 80690a86bdeSJiri Olsa 80790a86bdeSJiri Olsa scnprintf(path, PATH_MAX, 80890a86bdeSJiri Olsa "bus/event_source/devices/%s/caps/max_precise", 80990a86bdeSJiri Olsa name); 81090a86bdeSJiri Olsa 81190a86bdeSJiri Olsa sysfs__read_int(path, &max_precise); 81290a86bdeSJiri Olsa return max_precise; 81390a86bdeSJiri Olsa } 81490a86bdeSJiri Olsa 815b6b96fb4SAdrian Hunter static struct perf_pmu *pmu_lookup(const char *name) 816cd82a32eSJiri Olsa { 817cd82a32eSJiri Olsa struct perf_pmu *pmu; 818cd82a32eSJiri Olsa LIST_HEAD(format); 819a6146d50SZheng Yan LIST_HEAD(aliases); 820cd82a32eSJiri Olsa __u32 type; 821cd82a32eSJiri Olsa 822cd82a32eSJiri Olsa /* 823cd82a32eSJiri Olsa * The pmu data we store & need consists of the pmu 824cd82a32eSJiri Olsa * type value and format definitions. Load both right 825cd82a32eSJiri Olsa * now. 826cd82a32eSJiri Olsa */ 827cd82a32eSJiri Olsa if (pmu_format(name, &format)) 828cd82a32eSJiri Olsa return NULL; 829cd82a32eSJiri Olsa 83015b22ed3SAndi Kleen /* 83115b22ed3SAndi Kleen * Check the type first to avoid unnecessary work. 83215b22ed3SAndi Kleen */ 83315b22ed3SAndi Kleen if (pmu_type(name, &type)) 83415b22ed3SAndi Kleen return NULL; 83515b22ed3SAndi Kleen 8363fded963SJiri Olsa if (pmu_aliases(name, &aliases)) 8373fded963SJiri Olsa return NULL; 8383fded963SJiri Olsa 839cd82a32eSJiri Olsa pmu = zalloc(sizeof(*pmu)); 840cd82a32eSJiri Olsa if (!pmu) 841cd82a32eSJiri Olsa return NULL; 842cd82a32eSJiri Olsa 8437ae92e74SYan, Zheng pmu->cpus = pmu_cpumask(name); 84454e32dc0SGanapatrao Kulkarni pmu->name = strdup(name); 84554e32dc0SGanapatrao Kulkarni pmu->type = type; 84666ec1191SMark Rutland pmu->is_uncore = pmu_is_uncore(name); 84790a86bdeSJiri Olsa pmu->max_precise = pmu_max_precise(name); 84854e32dc0SGanapatrao Kulkarni pmu_add_cpu_aliases(&aliases, pmu); 84966ec1191SMark Rutland 850cd82a32eSJiri Olsa INIT_LIST_HEAD(&pmu->format); 851a6146d50SZheng Yan INIT_LIST_HEAD(&pmu->aliases); 852cd82a32eSJiri Olsa list_splice(&format, &pmu->format); 853a6146d50SZheng Yan list_splice(&aliases, &pmu->aliases); 8549bc8f9feSRobert Richter list_add_tail(&pmu->list, &pmus); 855dc0a6202SAdrian Hunter 856dc0a6202SAdrian Hunter pmu->default_config = perf_pmu__get_default_config(pmu); 857dc0a6202SAdrian Hunter 858cd82a32eSJiri Olsa return pmu; 859cd82a32eSJiri Olsa } 860cd82a32eSJiri Olsa 861b6b96fb4SAdrian Hunter static struct perf_pmu *pmu_find(const char *name) 862cd82a32eSJiri Olsa { 863cd82a32eSJiri Olsa struct perf_pmu *pmu; 864cd82a32eSJiri Olsa 865cd82a32eSJiri Olsa list_for_each_entry(pmu, &pmus, list) 866cd82a32eSJiri Olsa if (!strcmp(pmu->name, name)) 867cd82a32eSJiri Olsa return pmu; 868cd82a32eSJiri Olsa 869cd82a32eSJiri Olsa return NULL; 870cd82a32eSJiri Olsa } 871cd82a32eSJiri Olsa 87250a9667cSRobert Richter struct perf_pmu *perf_pmu__scan(struct perf_pmu *pmu) 87350a9667cSRobert Richter { 87450a9667cSRobert Richter /* 87550a9667cSRobert Richter * pmu iterator: If pmu is NULL, we start at the begin, 87650a9667cSRobert Richter * otherwise return the next pmu. Returns NULL on end. 87750a9667cSRobert Richter */ 87850a9667cSRobert Richter if (!pmu) { 87950a9667cSRobert Richter pmu_read_sysfs(); 88050a9667cSRobert Richter pmu = list_prepare_entry(pmu, &pmus, list); 88150a9667cSRobert Richter } 88250a9667cSRobert Richter list_for_each_entry_continue(pmu, &pmus, list) 88350a9667cSRobert Richter return pmu; 88450a9667cSRobert Richter return NULL; 88550a9667cSRobert Richter } 88650a9667cSRobert Richter 887b6b96fb4SAdrian Hunter struct perf_pmu *perf_pmu__find(const char *name) 888cd82a32eSJiri Olsa { 889cd82a32eSJiri Olsa struct perf_pmu *pmu; 890cd82a32eSJiri Olsa 891cd82a32eSJiri Olsa /* 892cd82a32eSJiri Olsa * Once PMU is loaded it stays in the list, 893cd82a32eSJiri Olsa * so we keep us from multiple reading/parsing 894cd82a32eSJiri Olsa * the pmu format definitions. 895cd82a32eSJiri Olsa */ 896cd82a32eSJiri Olsa pmu = pmu_find(name); 897cd82a32eSJiri Olsa if (pmu) 898cd82a32eSJiri Olsa return pmu; 899cd82a32eSJiri Olsa 900cd82a32eSJiri Olsa return pmu_lookup(name); 901cd82a32eSJiri Olsa } 902cd82a32eSJiri Olsa 9035c6ccc37SArnaldo Carvalho de Melo static struct perf_pmu_format * 90409ff6071SAdrian Hunter pmu_find_format(struct list_head *formats, const char *name) 905cd82a32eSJiri Olsa { 9065c6ccc37SArnaldo Carvalho de Melo struct perf_pmu_format *format; 907cd82a32eSJiri Olsa 908cd82a32eSJiri Olsa list_for_each_entry(format, formats, list) 909cd82a32eSJiri Olsa if (!strcmp(format->name, name)) 910cd82a32eSJiri Olsa return format; 911cd82a32eSJiri Olsa 912cd82a32eSJiri Olsa return NULL; 913cd82a32eSJiri Olsa } 914cd82a32eSJiri Olsa 91509ff6071SAdrian Hunter __u64 perf_pmu__format_bits(struct list_head *formats, const char *name) 91609ff6071SAdrian Hunter { 91709ff6071SAdrian Hunter struct perf_pmu_format *format = pmu_find_format(formats, name); 91809ff6071SAdrian Hunter __u64 bits = 0; 91909ff6071SAdrian Hunter int fbit; 92009ff6071SAdrian Hunter 92109ff6071SAdrian Hunter if (!format) 92209ff6071SAdrian Hunter return 0; 92309ff6071SAdrian Hunter 92409ff6071SAdrian Hunter for_each_set_bit(fbit, format->bits, PERF_PMU_FORMAT_BITS) 92509ff6071SAdrian Hunter bits |= 1ULL << fbit; 92609ff6071SAdrian Hunter 92709ff6071SAdrian Hunter return bits; 92809ff6071SAdrian Hunter } 92909ff6071SAdrian Hunter 930a1ac7de6SAdrian Hunter int perf_pmu__format_type(struct list_head *formats, const char *name) 931a1ac7de6SAdrian Hunter { 932a1ac7de6SAdrian Hunter struct perf_pmu_format *format = pmu_find_format(formats, name); 933a1ac7de6SAdrian Hunter 934a1ac7de6SAdrian Hunter if (!format) 935a1ac7de6SAdrian Hunter return -1; 936a1ac7de6SAdrian Hunter 937a1ac7de6SAdrian Hunter return format->value; 938a1ac7de6SAdrian Hunter } 939a1ac7de6SAdrian Hunter 940cd82a32eSJiri Olsa /* 941dc0a6202SAdrian Hunter * Sets value based on the format definition (format parameter) 942cd82a32eSJiri Olsa * and unformated value (value parameter). 943cd82a32eSJiri Olsa */ 944dc0a6202SAdrian Hunter static void pmu_format_value(unsigned long *format, __u64 value, __u64 *v, 945dc0a6202SAdrian Hunter bool zero) 946cd82a32eSJiri Olsa { 947cd82a32eSJiri Olsa unsigned long fbit, vbit; 948cd82a32eSJiri Olsa 949cd82a32eSJiri Olsa for (fbit = 0, vbit = 0; fbit < PERF_PMU_FORMAT_BITS; fbit++) { 950cd82a32eSJiri Olsa 951cd82a32eSJiri Olsa if (!test_bit(fbit, format)) 952cd82a32eSJiri Olsa continue; 953cd82a32eSJiri Olsa 954dc0a6202SAdrian Hunter if (value & (1llu << vbit++)) 955dc0a6202SAdrian Hunter *v |= (1llu << fbit); 956dc0a6202SAdrian Hunter else if (zero) 957dc0a6202SAdrian Hunter *v &= ~(1llu << fbit); 958cd82a32eSJiri Olsa } 959cd82a32eSJiri Olsa } 960cd82a32eSJiri Olsa 9610efe6b67SAdrian Hunter static __u64 pmu_format_max_value(const unsigned long *format) 9620efe6b67SAdrian Hunter { 9631b9caa10SJiri Olsa int w; 9640efe6b67SAdrian Hunter 9651b9caa10SJiri Olsa w = bitmap_weight(format, PERF_PMU_FORMAT_BITS); 9661b9caa10SJiri Olsa if (!w) 9671b9caa10SJiri Olsa return 0; 9681b9caa10SJiri Olsa if (w < 64) 9691b9caa10SJiri Olsa return (1ULL << w) - 1; 9701b9caa10SJiri Olsa return -1; 9710efe6b67SAdrian Hunter } 9720efe6b67SAdrian Hunter 973cd82a32eSJiri Olsa /* 974688d4dfcSCody P Schafer * Term is a string term, and might be a param-term. Try to look up it's value 975688d4dfcSCody P Schafer * in the remaining terms. 976688d4dfcSCody P Schafer * - We have a term like "base-or-format-term=param-term", 977688d4dfcSCody P Schafer * - We need to find the value supplied for "param-term" (with param-term named 978688d4dfcSCody P Schafer * in a config string) later on in the term list. 979688d4dfcSCody P Schafer */ 980688d4dfcSCody P Schafer static int pmu_resolve_param_term(struct parse_events_term *term, 981688d4dfcSCody P Schafer struct list_head *head_terms, 982688d4dfcSCody P Schafer __u64 *value) 983688d4dfcSCody P Schafer { 984688d4dfcSCody P Schafer struct parse_events_term *t; 985688d4dfcSCody P Schafer 986688d4dfcSCody P Schafer list_for_each_entry(t, head_terms, list) { 987688d4dfcSCody P Schafer if (t->type_val == PARSE_EVENTS__TERM_TYPE_NUM) { 988688d4dfcSCody P Schafer if (!strcmp(t->config, term->config)) { 989688d4dfcSCody P Schafer t->used = true; 990688d4dfcSCody P Schafer *value = t->val.num; 991688d4dfcSCody P Schafer return 0; 992688d4dfcSCody P Schafer } 993688d4dfcSCody P Schafer } 994688d4dfcSCody P Schafer } 995688d4dfcSCody P Schafer 996bb963e16SNamhyung Kim if (verbose > 0) 997688d4dfcSCody P Schafer printf("Required parameter '%s' not specified\n", term->config); 998688d4dfcSCody P Schafer 999688d4dfcSCody P Schafer return -1; 1000688d4dfcSCody P Schafer } 1001688d4dfcSCody P Schafer 1002ffeb883eSHe Kuang static char *pmu_formats_string(struct list_head *formats) 1003e64b020bSJiri Olsa { 1004e64b020bSJiri Olsa struct perf_pmu_format *format; 100511db4e29SMasami Hiramatsu char *str = NULL; 100611db4e29SMasami Hiramatsu struct strbuf buf = STRBUF_INIT; 1007e64b020bSJiri Olsa unsigned i = 0; 1008e64b020bSJiri Olsa 1009ffeb883eSHe Kuang if (!formats) 1010e64b020bSJiri Olsa return NULL; 1011e64b020bSJiri Olsa 1012e64b020bSJiri Olsa /* sysfs exported terms */ 1013ffeb883eSHe Kuang list_for_each_entry(format, formats, list) 101411db4e29SMasami Hiramatsu if (strbuf_addf(&buf, i++ ? ",%s" : "%s", format->name) < 0) 101511db4e29SMasami Hiramatsu goto error; 1016e64b020bSJiri Olsa 1017ffeb883eSHe Kuang str = strbuf_detach(&buf, NULL); 101811db4e29SMasami Hiramatsu error: 1019ffeb883eSHe Kuang strbuf_release(&buf); 1020e64b020bSJiri Olsa 1021e64b020bSJiri Olsa return str; 1022e64b020bSJiri Olsa } 1023e64b020bSJiri Olsa 1024688d4dfcSCody P Schafer /* 1025cd82a32eSJiri Olsa * Setup one of config[12] attr members based on the 102688aca8d9SCody P Schafer * user input data - term parameter. 1027cd82a32eSJiri Olsa */ 1028cd82a32eSJiri Olsa static int pmu_config_term(struct list_head *formats, 1029cd82a32eSJiri Olsa struct perf_event_attr *attr, 1030dc0a6202SAdrian Hunter struct parse_events_term *term, 1031688d4dfcSCody P Schafer struct list_head *head_terms, 1032e64b020bSJiri Olsa bool zero, struct parse_events_error *err) 1033cd82a32eSJiri Olsa { 10345c6ccc37SArnaldo Carvalho de Melo struct perf_pmu_format *format; 1035cd82a32eSJiri Olsa __u64 *vp; 10360efe6b67SAdrian Hunter __u64 val, max_val; 1037cd82a32eSJiri Olsa 1038cd82a32eSJiri Olsa /* 1039688d4dfcSCody P Schafer * If this is a parameter we've already used for parameterized-eval, 1040688d4dfcSCody P Schafer * skip it in normal eval. 1041688d4dfcSCody P Schafer */ 1042688d4dfcSCody P Schafer if (term->used) 1043688d4dfcSCody P Schafer return 0; 1044688d4dfcSCody P Schafer 1045688d4dfcSCody P Schafer /* 1046cd82a32eSJiri Olsa * Hardcoded terms should be already in, so nothing 1047cd82a32eSJiri Olsa * to be done for them. 1048cd82a32eSJiri Olsa */ 1049cd82a32eSJiri Olsa if (parse_events__is_hardcoded_term(term)) 1050cd82a32eSJiri Olsa return 0; 1051cd82a32eSJiri Olsa 1052cd82a32eSJiri Olsa format = pmu_find_format(formats, term->config); 1053688d4dfcSCody P Schafer if (!format) { 1054bb963e16SNamhyung Kim if (verbose > 0) 1055688d4dfcSCody P Schafer printf("Invalid event/parameter '%s'\n", term->config); 1056e64b020bSJiri Olsa if (err) { 1057ffeb883eSHe Kuang char *pmu_term = pmu_formats_string(formats); 1058ffeb883eSHe Kuang 1059448d732cSIan Rogers parse_events__handle_error(err, term->err_term, 1060448d732cSIan Rogers strdup("unknown term"), 1061448d732cSIan Rogers parse_events_formats_error_string(pmu_term)); 1062ffeb883eSHe Kuang free(pmu_term); 1063e64b020bSJiri Olsa } 1064cd82a32eSJiri Olsa return -EINVAL; 1065688d4dfcSCody P Schafer } 1066cd82a32eSJiri Olsa 1067cd82a32eSJiri Olsa switch (format->value) { 1068cd82a32eSJiri Olsa case PERF_PMU_FORMAT_VALUE_CONFIG: 1069cd82a32eSJiri Olsa vp = &attr->config; 1070cd82a32eSJiri Olsa break; 1071cd82a32eSJiri Olsa case PERF_PMU_FORMAT_VALUE_CONFIG1: 1072cd82a32eSJiri Olsa vp = &attr->config1; 1073cd82a32eSJiri Olsa break; 1074cd82a32eSJiri Olsa case PERF_PMU_FORMAT_VALUE_CONFIG2: 1075cd82a32eSJiri Olsa vp = &attr->config2; 1076cd82a32eSJiri Olsa break; 1077cd82a32eSJiri Olsa default: 1078cd82a32eSJiri Olsa return -EINVAL; 1079cd82a32eSJiri Olsa } 1080cd82a32eSJiri Olsa 108116fa7e82SJiri Olsa /* 1082688d4dfcSCody P Schafer * Either directly use a numeric term, or try to translate string terms 1083688d4dfcSCody P Schafer * using event parameters. 108416fa7e82SJiri Olsa */ 108599e7138eSJiri Olsa if (term->type_val == PARSE_EVENTS__TERM_TYPE_NUM) { 108699e7138eSJiri Olsa if (term->no_value && 108799e7138eSJiri Olsa bitmap_weight(format->bits, PERF_PMU_FORMAT_BITS) > 1) { 108899e7138eSJiri Olsa if (err) { 1089448d732cSIan Rogers parse_events__handle_error(err, term->err_val, 1090448d732cSIan Rogers strdup("no value assigned for term"), 1091448d732cSIan Rogers NULL); 109299e7138eSJiri Olsa } 109399e7138eSJiri Olsa return -EINVAL; 109499e7138eSJiri Olsa } 109599e7138eSJiri Olsa 1096688d4dfcSCody P Schafer val = term->val.num; 109799e7138eSJiri Olsa } else if (term->type_val == PARSE_EVENTS__TERM_TYPE_STR) { 1098688d4dfcSCody P Schafer if (strcmp(term->val.str, "?")) { 1099bb963e16SNamhyung Kim if (verbose > 0) { 1100688d4dfcSCody P Schafer pr_info("Invalid sysfs entry %s=%s\n", 1101688d4dfcSCody P Schafer term->config, term->val.str); 1102e64b020bSJiri Olsa } 1103e64b020bSJiri Olsa if (err) { 1104448d732cSIan Rogers parse_events__handle_error(err, term->err_val, 1105448d732cSIan Rogers strdup("expected numeric value"), 1106448d732cSIan Rogers NULL); 1107e64b020bSJiri Olsa } 1108688d4dfcSCody P Schafer return -EINVAL; 1109688d4dfcSCody P Schafer } 1110688d4dfcSCody P Schafer 1111688d4dfcSCody P Schafer if (pmu_resolve_param_term(term, head_terms, &val)) 1112688d4dfcSCody P Schafer return -EINVAL; 1113688d4dfcSCody P Schafer } else 1114688d4dfcSCody P Schafer return -EINVAL; 1115688d4dfcSCody P Schafer 11160efe6b67SAdrian Hunter max_val = pmu_format_max_value(format->bits); 11170efe6b67SAdrian Hunter if (val > max_val) { 11180efe6b67SAdrian Hunter if (err) { 1119448d732cSIan Rogers char *err_str; 1120448d732cSIan Rogers 1121448d732cSIan Rogers parse_events__handle_error(err, term->err_val, 1122448d732cSIan Rogers asprintf(&err_str, 11230efe6b67SAdrian Hunter "value too big for format, maximum is %llu", 1124448d732cSIan Rogers (unsigned long long)max_val) < 0 1125448d732cSIan Rogers ? strdup("value too big for format") 1126448d732cSIan Rogers : err_str, 1127448d732cSIan Rogers NULL); 11280efe6b67SAdrian Hunter return -EINVAL; 11290efe6b67SAdrian Hunter } 11300efe6b67SAdrian Hunter /* 11310efe6b67SAdrian Hunter * Assume we don't care if !err, in which case the value will be 11320efe6b67SAdrian Hunter * silently truncated. 11330efe6b67SAdrian Hunter */ 11340efe6b67SAdrian Hunter } 11350efe6b67SAdrian Hunter 1136688d4dfcSCody P Schafer pmu_format_value(format->bits, val, vp, zero); 1137cd82a32eSJiri Olsa return 0; 1138cd82a32eSJiri Olsa } 1139cd82a32eSJiri Olsa 1140cff7f956SJiri Olsa int perf_pmu__config_terms(struct list_head *formats, 1141cff7f956SJiri Olsa struct perf_event_attr *attr, 1142dc0a6202SAdrian Hunter struct list_head *head_terms, 1143e64b020bSJiri Olsa bool zero, struct parse_events_error *err) 1144cd82a32eSJiri Olsa { 11456cee6cd3SArnaldo Carvalho de Melo struct parse_events_term *term; 1146cd82a32eSJiri Olsa 1147688d4dfcSCody P Schafer list_for_each_entry(term, head_terms, list) { 1148e64b020bSJiri Olsa if (pmu_config_term(formats, attr, term, head_terms, 1149e64b020bSJiri Olsa zero, err)) 1150cd82a32eSJiri Olsa return -EINVAL; 1151688d4dfcSCody P Schafer } 1152cd82a32eSJiri Olsa 1153cd82a32eSJiri Olsa return 0; 1154cd82a32eSJiri Olsa } 1155cd82a32eSJiri Olsa 1156cd82a32eSJiri Olsa /* 1157cd82a32eSJiri Olsa * Configures event's 'attr' parameter based on the: 1158cd82a32eSJiri Olsa * 1) users input - specified in terms parameter 1159cd82a32eSJiri Olsa * 2) pmu format definitions - specified by pmu parameter 1160cd82a32eSJiri Olsa */ 1161cd82a32eSJiri Olsa int perf_pmu__config(struct perf_pmu *pmu, struct perf_event_attr *attr, 1162e64b020bSJiri Olsa struct list_head *head_terms, 1163e64b020bSJiri Olsa struct parse_events_error *err) 1164cd82a32eSJiri Olsa { 1165dc0a6202SAdrian Hunter bool zero = !!pmu->default_config; 1166dc0a6202SAdrian Hunter 1167cd82a32eSJiri Olsa attr->type = pmu->type; 1168e64b020bSJiri Olsa return perf_pmu__config_terms(&pmu->format, attr, head_terms, 1169e64b020bSJiri Olsa zero, err); 1170cd82a32eSJiri Olsa } 1171cd82a32eSJiri Olsa 11725c6ccc37SArnaldo Carvalho de Melo static struct perf_pmu_alias *pmu_find_alias(struct perf_pmu *pmu, 11736cee6cd3SArnaldo Carvalho de Melo struct parse_events_term *term) 1174a6146d50SZheng Yan { 11755c6ccc37SArnaldo Carvalho de Melo struct perf_pmu_alias *alias; 1176a6146d50SZheng Yan char *name; 1177a6146d50SZheng Yan 1178a6146d50SZheng Yan if (parse_events__is_hardcoded_term(term)) 1179a6146d50SZheng Yan return NULL; 1180a6146d50SZheng Yan 1181a6146d50SZheng Yan if (term->type_val == PARSE_EVENTS__TERM_TYPE_NUM) { 1182a6146d50SZheng Yan if (term->val.num != 1) 1183a6146d50SZheng Yan return NULL; 1184a6146d50SZheng Yan if (pmu_find_format(&pmu->format, term->config)) 1185a6146d50SZheng Yan return NULL; 1186a6146d50SZheng Yan name = term->config; 1187a6146d50SZheng Yan } else if (term->type_val == PARSE_EVENTS__TERM_TYPE_STR) { 1188a6146d50SZheng Yan if (strcasecmp(term->config, "event")) 1189a6146d50SZheng Yan return NULL; 1190a6146d50SZheng Yan name = term->val.str; 1191a6146d50SZheng Yan } else { 1192a6146d50SZheng Yan return NULL; 1193a6146d50SZheng Yan } 1194a6146d50SZheng Yan 1195a6146d50SZheng Yan list_for_each_entry(alias, &pmu->aliases, list) { 1196a6146d50SZheng Yan if (!strcasecmp(alias->name, name)) 1197a6146d50SZheng Yan return alias; 1198a6146d50SZheng Yan } 1199a6146d50SZheng Yan return NULL; 1200a6146d50SZheng Yan } 1201a6146d50SZheng Yan 1202410136f5SStephane Eranian 12031d9e446bSJiri Olsa static int check_info_data(struct perf_pmu_alias *alias, 12041d9e446bSJiri Olsa struct perf_pmu_info *info) 1205410136f5SStephane Eranian { 1206410136f5SStephane Eranian /* 1207410136f5SStephane Eranian * Only one term in event definition can 12081d9e446bSJiri Olsa * define unit, scale and snapshot, fail 12091d9e446bSJiri Olsa * if there's more than one. 1210410136f5SStephane Eranian */ 1211b30a7d1fSArnaldo Carvalho de Melo if ((info->unit && alias->unit[0]) || 12121d9e446bSJiri Olsa (info->scale && alias->scale) || 12131d9e446bSJiri Olsa (info->snapshot && alias->snapshot)) 1214410136f5SStephane Eranian return -EINVAL; 1215410136f5SStephane Eranian 1216b30a7d1fSArnaldo Carvalho de Melo if (alias->unit[0]) 12171d9e446bSJiri Olsa info->unit = alias->unit; 1218410136f5SStephane Eranian 1219410136f5SStephane Eranian if (alias->scale) 12201d9e446bSJiri Olsa info->scale = alias->scale; 12211d9e446bSJiri Olsa 12221d9e446bSJiri Olsa if (alias->snapshot) 12231d9e446bSJiri Olsa info->snapshot = alias->snapshot; 1224410136f5SStephane Eranian 1225410136f5SStephane Eranian return 0; 1226410136f5SStephane Eranian } 1227410136f5SStephane Eranian 1228a6146d50SZheng Yan /* 1229a6146d50SZheng Yan * Find alias in the terms list and replace it with the terms 1230a6146d50SZheng Yan * defined for the alias 1231a6146d50SZheng Yan */ 1232410136f5SStephane Eranian int perf_pmu__check_alias(struct perf_pmu *pmu, struct list_head *head_terms, 123346441bdcSMatt Fleming struct perf_pmu_info *info) 1234a6146d50SZheng Yan { 12356cee6cd3SArnaldo Carvalho de Melo struct parse_events_term *term, *h; 12365c6ccc37SArnaldo Carvalho de Melo struct perf_pmu_alias *alias; 1237a6146d50SZheng Yan int ret; 1238a6146d50SZheng Yan 1239044330c1SMatt Fleming info->per_pkg = false; 1240044330c1SMatt Fleming 12418a398897SStephane Eranian /* 12428a398897SStephane Eranian * Mark unit and scale as not set 12438a398897SStephane Eranian * (different from default values, see below) 12448a398897SStephane Eranian */ 124546441bdcSMatt Fleming info->unit = NULL; 124646441bdcSMatt Fleming info->scale = 0.0; 12471d9e446bSJiri Olsa info->snapshot = false; 124837932c18SAndi Kleen info->metric_expr = NULL; 124996284814SAndi Kleen info->metric_name = NULL; 1250410136f5SStephane Eranian 1251a6146d50SZheng Yan list_for_each_entry_safe(term, h, head_terms, list) { 1252a6146d50SZheng Yan alias = pmu_find_alias(pmu, term); 1253a6146d50SZheng Yan if (!alias) 1254a6146d50SZheng Yan continue; 1255a6146d50SZheng Yan ret = pmu_alias_terms(alias, &term->list); 1256a6146d50SZheng Yan if (ret) 1257a6146d50SZheng Yan return ret; 1258410136f5SStephane Eranian 12591d9e446bSJiri Olsa ret = check_info_data(alias, info); 1260410136f5SStephane Eranian if (ret) 1261410136f5SStephane Eranian return ret; 1262410136f5SStephane Eranian 1263044330c1SMatt Fleming if (alias->per_pkg) 1264044330c1SMatt Fleming info->per_pkg = true; 126537932c18SAndi Kleen info->metric_expr = alias->metric_expr; 126696284814SAndi Kleen info->metric_name = alias->metric_name; 1267044330c1SMatt Fleming 1268e56fbc9dSArnaldo Carvalho de Melo list_del_init(&term->list); 12691dc92556SIan Rogers parse_events_term__delete(term); 1270a6146d50SZheng Yan } 12718a398897SStephane Eranian 12728a398897SStephane Eranian /* 12738a398897SStephane Eranian * if no unit or scale foundin aliases, then 12748a398897SStephane Eranian * set defaults as for evsel 12758a398897SStephane Eranian * unit cannot left to NULL 12768a398897SStephane Eranian */ 127746441bdcSMatt Fleming if (info->unit == NULL) 127846441bdcSMatt Fleming info->unit = ""; 12798a398897SStephane Eranian 128046441bdcSMatt Fleming if (info->scale == 0.0) 128146441bdcSMatt Fleming info->scale = 1.0; 12828a398897SStephane Eranian 1283a6146d50SZheng Yan return 0; 1284a6146d50SZheng Yan } 1285a6146d50SZheng Yan 1286cd82a32eSJiri Olsa int perf_pmu__new_format(struct list_head *list, char *name, 1287cd82a32eSJiri Olsa int config, unsigned long *bits) 1288cd82a32eSJiri Olsa { 12895c6ccc37SArnaldo Carvalho de Melo struct perf_pmu_format *format; 1290cd82a32eSJiri Olsa 1291cd82a32eSJiri Olsa format = zalloc(sizeof(*format)); 1292cd82a32eSJiri Olsa if (!format) 1293cd82a32eSJiri Olsa return -ENOMEM; 1294cd82a32eSJiri Olsa 1295cd82a32eSJiri Olsa format->name = strdup(name); 1296cd82a32eSJiri Olsa format->value = config; 1297cd82a32eSJiri Olsa memcpy(format->bits, bits, sizeof(format->bits)); 1298cd82a32eSJiri Olsa 1299cd82a32eSJiri Olsa list_add_tail(&format->list, list); 1300cd82a32eSJiri Olsa return 0; 1301cd82a32eSJiri Olsa } 1302cd82a32eSJiri Olsa 1303cd82a32eSJiri Olsa void perf_pmu__set_format(unsigned long *bits, long from, long to) 1304cd82a32eSJiri Olsa { 1305cd82a32eSJiri Olsa long b; 1306cd82a32eSJiri Olsa 1307cd82a32eSJiri Olsa if (!to) 1308cd82a32eSJiri Olsa to = from; 1309cd82a32eSJiri Olsa 131015268138SSukadev Bhattiprolu memset(bits, 0, BITS_TO_BYTES(PERF_PMU_FORMAT_BITS)); 1311cd82a32eSJiri Olsa for (b = from; b <= to; b++) 1312cd82a32eSJiri Olsa set_bit(b, bits); 1313cd82a32eSJiri Olsa } 1314dc098b35SAndi Kleen 1315aaea3617SCody P Schafer static int sub_non_neg(int a, int b) 1316aaea3617SCody P Schafer { 1317aaea3617SCody P Schafer if (b > a) 1318aaea3617SCody P Schafer return 0; 1319aaea3617SCody P Schafer return a - b; 1320aaea3617SCody P Schafer } 1321aaea3617SCody P Schafer 1322dc098b35SAndi Kleen static char *format_alias(char *buf, int len, struct perf_pmu *pmu, 1323dc098b35SAndi Kleen struct perf_pmu_alias *alias) 1324dc098b35SAndi Kleen { 1325aaea3617SCody P Schafer struct parse_events_term *term; 1326aaea3617SCody P Schafer int used = snprintf(buf, len, "%s/%s", pmu->name, alias->name); 1327aaea3617SCody P Schafer 1328aaea3617SCody P Schafer list_for_each_entry(term, &alias->terms, list) { 1329aaea3617SCody P Schafer if (term->type_val == PARSE_EVENTS__TERM_TYPE_STR) 1330aaea3617SCody P Schafer used += snprintf(buf + used, sub_non_neg(len, used), 1331aaea3617SCody P Schafer ",%s=%s", term->config, 1332aaea3617SCody P Schafer term->val.str); 1333aaea3617SCody P Schafer } 1334aaea3617SCody P Schafer 1335aaea3617SCody P Schafer if (sub_non_neg(len, used) > 0) { 1336aaea3617SCody P Schafer buf[used] = '/'; 1337aaea3617SCody P Schafer used++; 1338aaea3617SCody P Schafer } 1339aaea3617SCody P Schafer if (sub_non_neg(len, used) > 0) { 1340aaea3617SCody P Schafer buf[used] = '\0'; 1341aaea3617SCody P Schafer used++; 1342aaea3617SCody P Schafer } else 1343aaea3617SCody P Schafer buf[len - 1] = '\0'; 1344aaea3617SCody P Schafer 1345dc098b35SAndi Kleen return buf; 1346dc098b35SAndi Kleen } 1347dc098b35SAndi Kleen 1348dc098b35SAndi Kleen static char *format_alias_or(char *buf, int len, struct perf_pmu *pmu, 1349dc098b35SAndi Kleen struct perf_pmu_alias *alias) 1350dc098b35SAndi Kleen { 1351dc098b35SAndi Kleen snprintf(buf, len, "%s OR %s/%s/", alias->name, pmu->name, alias->name); 1352dc098b35SAndi Kleen return buf; 1353dc098b35SAndi Kleen } 1354dc098b35SAndi Kleen 1355dd5f1036SAndi Kleen struct sevent { 135608e60ed1SAndi Kleen char *name; 135708e60ed1SAndi Kleen char *desc; 1358dd5f1036SAndi Kleen char *topic; 1359f2361024SAndi Kleen char *str; 1360f2361024SAndi Kleen char *pmu; 13617f372a63SAndi Kleen char *metric_expr; 136296284814SAndi Kleen char *metric_name; 136308e60ed1SAndi Kleen }; 136408e60ed1SAndi Kleen 1365dd5f1036SAndi Kleen static int cmp_sevent(const void *a, const void *b) 1366dc098b35SAndi Kleen { 1367dd5f1036SAndi Kleen const struct sevent *as = a; 1368dd5f1036SAndi Kleen const struct sevent *bs = b; 136908e60ed1SAndi Kleen 137008e60ed1SAndi Kleen /* Put extra events last */ 137108e60ed1SAndi Kleen if (!!as->desc != !!bs->desc) 137208e60ed1SAndi Kleen return !!as->desc - !!bs->desc; 1373dd5f1036SAndi Kleen if (as->topic && bs->topic) { 1374dd5f1036SAndi Kleen int n = strcmp(as->topic, bs->topic); 1375dd5f1036SAndi Kleen 1376dd5f1036SAndi Kleen if (n) 1377dd5f1036SAndi Kleen return n; 1378dd5f1036SAndi Kleen } 137908e60ed1SAndi Kleen return strcmp(as->name, bs->name); 138008e60ed1SAndi Kleen } 138108e60ed1SAndi Kleen 138208e60ed1SAndi Kleen static void wordwrap(char *s, int start, int max, int corr) 138308e60ed1SAndi Kleen { 138408e60ed1SAndi Kleen int column = start; 138508e60ed1SAndi Kleen int n; 138608e60ed1SAndi Kleen 138708e60ed1SAndi Kleen while (*s) { 138808e60ed1SAndi Kleen int wlen = strcspn(s, " \t"); 138908e60ed1SAndi Kleen 139008e60ed1SAndi Kleen if (column + wlen >= max && column > start) { 139108e60ed1SAndi Kleen printf("\n%*s", start, ""); 139208e60ed1SAndi Kleen column = start + corr; 139308e60ed1SAndi Kleen } 139408e60ed1SAndi Kleen n = printf("%s%.*s", column > start ? " " : "", wlen, s); 139508e60ed1SAndi Kleen if (n <= 0) 139608e60ed1SAndi Kleen break; 139708e60ed1SAndi Kleen s += wlen; 139808e60ed1SAndi Kleen column += n; 139932858480SArnaldo Carvalho de Melo s = skip_spaces(s); 140008e60ed1SAndi Kleen } 1401dc098b35SAndi Kleen } 1402dc098b35SAndi Kleen 1403c8d6828aSSukadev Bhattiprolu void print_pmu_events(const char *event_glob, bool name_only, bool quiet_flag, 1404a7f6c8c8SJin Yao bool long_desc, bool details_flag, bool deprecated) 1405dc098b35SAndi Kleen { 1406dc098b35SAndi Kleen struct perf_pmu *pmu; 1407dc098b35SAndi Kleen struct perf_pmu_alias *alias; 1408dc098b35SAndi Kleen char buf[1024]; 1409dc098b35SAndi Kleen int printed = 0; 1410dc098b35SAndi Kleen int len, j; 1411dd5f1036SAndi Kleen struct sevent *aliases; 141208e60ed1SAndi Kleen int numdesc = 0; 141361eb2eb4SAndi Kleen int columns = pager_get_columns(); 1414dd5f1036SAndi Kleen char *topic = NULL; 1415dc098b35SAndi Kleen 1416dc098b35SAndi Kleen pmu = NULL; 1417dc098b35SAndi Kleen len = 0; 141842634bc7SAdrian Hunter while ((pmu = perf_pmu__scan(pmu)) != NULL) { 1419dc098b35SAndi Kleen list_for_each_entry(alias, &pmu->aliases, list) 1420dc098b35SAndi Kleen len++; 142142634bc7SAdrian Hunter if (pmu->selectable) 142242634bc7SAdrian Hunter len++; 142342634bc7SAdrian Hunter } 1424dd5f1036SAndi Kleen aliases = zalloc(sizeof(struct sevent) * len); 1425dc098b35SAndi Kleen if (!aliases) 14267e4772dcSArnaldo Carvalho de Melo goto out_enomem; 1427dc098b35SAndi Kleen pmu = NULL; 1428dc098b35SAndi Kleen j = 0; 142942634bc7SAdrian Hunter while ((pmu = perf_pmu__scan(pmu)) != NULL) { 1430dc098b35SAndi Kleen list_for_each_entry(alias, &pmu->aliases, list) { 143108e60ed1SAndi Kleen char *name = alias->desc ? alias->name : 143208e60ed1SAndi Kleen format_alias(buf, sizeof(buf), pmu, alias); 1433dc098b35SAndi Kleen bool is_cpu = !strcmp(pmu->name, "cpu"); 1434dc098b35SAndi Kleen 1435a7f6c8c8SJin Yao if (alias->deprecated && !deprecated) 1436a7f6c8c8SJin Yao continue; 1437a7f6c8c8SJin Yao 1438dc098b35SAndi Kleen if (event_glob != NULL && 143938d14f0cSAndi Kleen !(strglobmatch_nocase(name, event_glob) || 144038d14f0cSAndi Kleen (!is_cpu && strglobmatch_nocase(alias->name, 144167bdc35fSAndi Kleen event_glob)) || 144267bdc35fSAndi Kleen (alias->topic && 144367bdc35fSAndi Kleen strglobmatch_nocase(alias->topic, event_glob)))) 1444dc098b35SAndi Kleen continue; 14457e4772dcSArnaldo Carvalho de Melo 144608e60ed1SAndi Kleen if (is_cpu && !name_only && !alias->desc) 14477e4772dcSArnaldo Carvalho de Melo name = format_alias_or(buf, sizeof(buf), pmu, alias); 14487e4772dcSArnaldo Carvalho de Melo 144908e60ed1SAndi Kleen aliases[j].name = name; 145008e60ed1SAndi Kleen if (is_cpu && !name_only && !alias->desc) 145108e60ed1SAndi Kleen aliases[j].name = format_alias_or(buf, 145208e60ed1SAndi Kleen sizeof(buf), 145308e60ed1SAndi Kleen pmu, alias); 145408e60ed1SAndi Kleen aliases[j].name = strdup(aliases[j].name); 145508e60ed1SAndi Kleen if (!aliases[j].name) 14567e4772dcSArnaldo Carvalho de Melo goto out_enomem; 145708e60ed1SAndi Kleen 1458c8d6828aSSukadev Bhattiprolu aliases[j].desc = long_desc ? alias->long_desc : 1459c8d6828aSSukadev Bhattiprolu alias->desc; 1460dd5f1036SAndi Kleen aliases[j].topic = alias->topic; 1461f2361024SAndi Kleen aliases[j].str = alias->str; 1462f2361024SAndi Kleen aliases[j].pmu = pmu->name; 14637f372a63SAndi Kleen aliases[j].metric_expr = alias->metric_expr; 146496284814SAndi Kleen aliases[j].metric_name = alias->metric_name; 1465dc098b35SAndi Kleen j++; 1466dc098b35SAndi Kleen } 1467fa52ceabSArnaldo Carvalho de Melo if (pmu->selectable && 1468fa52ceabSArnaldo Carvalho de Melo (event_glob == NULL || strglobmatch(pmu->name, event_glob))) { 14697e4772dcSArnaldo Carvalho de Melo char *s; 14707e4772dcSArnaldo Carvalho de Melo if (asprintf(&s, "%s//", pmu->name) < 0) 14717e4772dcSArnaldo Carvalho de Melo goto out_enomem; 147208e60ed1SAndi Kleen aliases[j].name = s; 147342634bc7SAdrian Hunter j++; 147442634bc7SAdrian Hunter } 147542634bc7SAdrian Hunter } 1476dc098b35SAndi Kleen len = j; 1477dd5f1036SAndi Kleen qsort(aliases, len, sizeof(struct sevent), cmp_sevent); 1478dc098b35SAndi Kleen for (j = 0; j < len; j++) { 147915b22ed3SAndi Kleen /* Skip duplicates */ 148015b22ed3SAndi Kleen if (j > 0 && !strcmp(aliases[j].name, aliases[j - 1].name)) 148115b22ed3SAndi Kleen continue; 1482dc098b35SAndi Kleen if (name_only) { 148308e60ed1SAndi Kleen printf("%s ", aliases[j].name); 1484dc098b35SAndi Kleen continue; 1485dc098b35SAndi Kleen } 14861c5f01feSAndi Kleen if (aliases[j].desc && !quiet_flag) { 148708e60ed1SAndi Kleen if (numdesc++ == 0) 148808e60ed1SAndi Kleen printf("\n"); 1489dd5f1036SAndi Kleen if (aliases[j].topic && (!topic || 1490dd5f1036SAndi Kleen strcmp(topic, aliases[j].topic))) { 1491dd5f1036SAndi Kleen printf("%s%s:\n", topic ? "\n" : "", 1492dd5f1036SAndi Kleen aliases[j].topic); 1493dd5f1036SAndi Kleen topic = aliases[j].topic; 1494dd5f1036SAndi Kleen } 149508e60ed1SAndi Kleen printf(" %-50s\n", aliases[j].name); 149608e60ed1SAndi Kleen printf("%*s", 8, "["); 149708e60ed1SAndi Kleen wordwrap(aliases[j].desc, 8, columns, 0); 149808e60ed1SAndi Kleen printf("]\n"); 1499bf874fcfSAndi Kleen if (details_flag) { 15007f372a63SAndi Kleen printf("%*s%s/%s/ ", 8, "", aliases[j].pmu, aliases[j].str); 150196284814SAndi Kleen if (aliases[j].metric_name) 150296284814SAndi Kleen printf(" MetricName: %s", aliases[j].metric_name); 15037f372a63SAndi Kleen if (aliases[j].metric_expr) 15047f372a63SAndi Kleen printf(" MetricExpr: %s", aliases[j].metric_expr); 15057f372a63SAndi Kleen putchar('\n'); 15067f372a63SAndi Kleen } 150708e60ed1SAndi Kleen } else 150808e60ed1SAndi Kleen printf(" %-50s [Kernel PMU event]\n", aliases[j].name); 1509dc098b35SAndi Kleen printed++; 1510dc098b35SAndi Kleen } 1511dfc431cbSArnaldo Carvalho de Melo if (printed && pager_in_use()) 1512dc098b35SAndi Kleen printf("\n"); 15137e4772dcSArnaldo Carvalho de Melo out_free: 15147e4772dcSArnaldo Carvalho de Melo for (j = 0; j < len; j++) 151508e60ed1SAndi Kleen zfree(&aliases[j].name); 15167e4772dcSArnaldo Carvalho de Melo zfree(&aliases); 15177e4772dcSArnaldo Carvalho de Melo return; 15187e4772dcSArnaldo Carvalho de Melo 15197e4772dcSArnaldo Carvalho de Melo out_enomem: 15207e4772dcSArnaldo Carvalho de Melo printf("FATAL: not enough memory to print PMU events\n"); 15217e4772dcSArnaldo Carvalho de Melo if (aliases) 15227e4772dcSArnaldo Carvalho de Melo goto out_free; 1523dc098b35SAndi Kleen } 15244cabc3d1SAndi Kleen 15254cabc3d1SAndi Kleen bool pmu_have_event(const char *pname, const char *name) 15264cabc3d1SAndi Kleen { 15274cabc3d1SAndi Kleen struct perf_pmu *pmu; 15284cabc3d1SAndi Kleen struct perf_pmu_alias *alias; 15294cabc3d1SAndi Kleen 15304cabc3d1SAndi Kleen pmu = NULL; 15314cabc3d1SAndi Kleen while ((pmu = perf_pmu__scan(pmu)) != NULL) { 15324cabc3d1SAndi Kleen if (strcmp(pname, pmu->name)) 15334cabc3d1SAndi Kleen continue; 15344cabc3d1SAndi Kleen list_for_each_entry(alias, &pmu->aliases, list) 15354cabc3d1SAndi Kleen if (!strcmp(alias->name, name)) 15364cabc3d1SAndi Kleen return true; 15374cabc3d1SAndi Kleen } 15384cabc3d1SAndi Kleen return false; 15394cabc3d1SAndi Kleen } 15407d4bdab5SAdrian Hunter 15417d4bdab5SAdrian Hunter static FILE *perf_pmu__open_file(struct perf_pmu *pmu, const char *name) 15427d4bdab5SAdrian Hunter { 15437d4bdab5SAdrian Hunter char path[PATH_MAX]; 15447d4bdab5SAdrian Hunter const char *sysfs; 15457d4bdab5SAdrian Hunter 15467d4bdab5SAdrian Hunter sysfs = sysfs__mountpoint(); 15477d4bdab5SAdrian Hunter if (!sysfs) 15487d4bdab5SAdrian Hunter return NULL; 15497d4bdab5SAdrian Hunter 15507d4bdab5SAdrian Hunter snprintf(path, PATH_MAX, 15517d4bdab5SAdrian Hunter "%s" EVENT_SOURCE_DEVICE_PATH "%s/%s", sysfs, pmu->name, name); 1552d9664582SAndi Kleen if (!file_available(path)) 15537d4bdab5SAdrian Hunter return NULL; 15547d4bdab5SAdrian Hunter return fopen(path, "r"); 15557d4bdab5SAdrian Hunter } 15567d4bdab5SAdrian Hunter 15577d4bdab5SAdrian Hunter int perf_pmu__scan_file(struct perf_pmu *pmu, const char *name, const char *fmt, 15587d4bdab5SAdrian Hunter ...) 15597d4bdab5SAdrian Hunter { 15607d4bdab5SAdrian Hunter va_list args; 15617d4bdab5SAdrian Hunter FILE *file; 15627d4bdab5SAdrian Hunter int ret = EOF; 15637d4bdab5SAdrian Hunter 15647d4bdab5SAdrian Hunter va_start(args, fmt); 15657d4bdab5SAdrian Hunter file = perf_pmu__open_file(pmu, name); 15667d4bdab5SAdrian Hunter if (file) { 15677d4bdab5SAdrian Hunter ret = vfscanf(file, fmt, args); 15687d4bdab5SAdrian Hunter fclose(file); 15697d4bdab5SAdrian Hunter } 15707d4bdab5SAdrian Hunter va_end(args); 15717d4bdab5SAdrian Hunter return ret; 15727d4bdab5SAdrian Hunter } 1573