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" 237ae92e74SYan, Zheng #include "cpumap.h" 24933f82ffSSukadev Bhattiprolu #include "header.h" 25933f82ffSSukadev Bhattiprolu #include "pmu-events/pmu-events.h" 26a067558eSArnaldo Carvalho de Melo #include "string2.h" 27fa0d9846SArnaldo Carvalho de Melo #include "strbuf.h" 28cd82a32eSJiri Olsa 29ab1bf653SArnaldo Carvalho de Melo struct perf_pmu_format { 30ab1bf653SArnaldo Carvalho de Melo char *name; 31ab1bf653SArnaldo Carvalho de Melo int value; 32ab1bf653SArnaldo Carvalho de Melo DECLARE_BITMAP(bits, PERF_PMU_FORMAT_BITS); 33ab1bf653SArnaldo Carvalho de Melo struct list_head list; 34ab1bf653SArnaldo Carvalho de Melo }; 35ab1bf653SArnaldo Carvalho de Melo 36cd82a32eSJiri Olsa int perf_pmu_parse(struct list_head *list, char *name); 37cd82a32eSJiri Olsa extern FILE *perf_pmu_in; 38cd82a32eSJiri Olsa 39cd82a32eSJiri Olsa static LIST_HEAD(pmus); 40cd82a32eSJiri Olsa 41cd82a32eSJiri Olsa /* 42cd82a32eSJiri Olsa * Parse & process all the sysfs attributes located under 43cd82a32eSJiri Olsa * the directory specified in 'dir' parameter. 44cd82a32eSJiri Olsa */ 45cff7f956SJiri Olsa int perf_pmu__format_parse(char *dir, struct list_head *head) 46cd82a32eSJiri Olsa { 47cd82a32eSJiri Olsa struct dirent *evt_ent; 48cd82a32eSJiri Olsa DIR *format_dir; 49cd82a32eSJiri Olsa int ret = 0; 50cd82a32eSJiri Olsa 51cd82a32eSJiri Olsa format_dir = opendir(dir); 52cd82a32eSJiri Olsa if (!format_dir) 53cd82a32eSJiri Olsa return -EINVAL; 54cd82a32eSJiri Olsa 55cd82a32eSJiri Olsa while (!ret && (evt_ent = readdir(format_dir))) { 56cd82a32eSJiri Olsa char path[PATH_MAX]; 57cd82a32eSJiri Olsa char *name = evt_ent->d_name; 58cd82a32eSJiri Olsa FILE *file; 59cd82a32eSJiri Olsa 60cd82a32eSJiri Olsa if (!strcmp(name, ".") || !strcmp(name, "..")) 61cd82a32eSJiri Olsa continue; 62cd82a32eSJiri Olsa 63cd82a32eSJiri Olsa snprintf(path, PATH_MAX, "%s/%s", dir, name); 64cd82a32eSJiri Olsa 65cd82a32eSJiri Olsa ret = -EINVAL; 66cd82a32eSJiri Olsa file = fopen(path, "r"); 67cd82a32eSJiri Olsa if (!file) 68cd82a32eSJiri Olsa break; 69cd82a32eSJiri Olsa 70cd82a32eSJiri Olsa perf_pmu_in = file; 71cd82a32eSJiri Olsa ret = perf_pmu_parse(head, name); 72cd82a32eSJiri Olsa fclose(file); 73cd82a32eSJiri Olsa } 74cd82a32eSJiri Olsa 75cd82a32eSJiri Olsa closedir(format_dir); 76cd82a32eSJiri Olsa return ret; 77cd82a32eSJiri Olsa } 78cd82a32eSJiri Olsa 79cd82a32eSJiri Olsa /* 80cd82a32eSJiri Olsa * Reading/parsing the default pmu format definition, which should be 81cd82a32eSJiri Olsa * located at: 82cd82a32eSJiri Olsa * /sys/bus/event_source/devices/<dev>/format as sysfs group attributes. 83cd82a32eSJiri Olsa */ 84b6b96fb4SAdrian Hunter static int pmu_format(const char *name, struct list_head *format) 85cd82a32eSJiri Olsa { 86cd82a32eSJiri Olsa struct stat st; 87cd82a32eSJiri Olsa char path[PATH_MAX]; 88cf38fadaSArnaldo Carvalho de Melo const char *sysfs = sysfs__mountpoint(); 89cd82a32eSJiri Olsa 90cd82a32eSJiri Olsa if (!sysfs) 91cd82a32eSJiri Olsa return -1; 92cd82a32eSJiri Olsa 93cd82a32eSJiri Olsa snprintf(path, PATH_MAX, 9450a9667cSRobert Richter "%s" EVENT_SOURCE_DEVICE_PATH "%s/format", sysfs, name); 95cd82a32eSJiri Olsa 96cd82a32eSJiri Olsa if (stat(path, &st) < 0) 979bc8f9feSRobert Richter return 0; /* no error if format does not exist */ 98cd82a32eSJiri Olsa 99cff7f956SJiri Olsa if (perf_pmu__format_parse(path, format)) 100cd82a32eSJiri Olsa return -1; 101cd82a32eSJiri Olsa 102cd82a32eSJiri Olsa return 0; 103cd82a32eSJiri Olsa } 104cd82a32eSJiri Olsa 105a55ab7c4SJin Yao int perf_pmu__convert_scale(const char *scale, char **end, double *sval) 106d02fc6bcSAndi Kleen { 107d02fc6bcSAndi Kleen char *lc; 108d02fc6bcSAndi Kleen int ret = 0; 109d02fc6bcSAndi Kleen 110d02fc6bcSAndi Kleen /* 111d02fc6bcSAndi Kleen * save current locale 112d02fc6bcSAndi Kleen */ 113d02fc6bcSAndi Kleen lc = setlocale(LC_NUMERIC, NULL); 114d02fc6bcSAndi Kleen 115d02fc6bcSAndi Kleen /* 116d02fc6bcSAndi Kleen * The lc string may be allocated in static storage, 117d02fc6bcSAndi Kleen * so get a dynamic copy to make it survive setlocale 118d02fc6bcSAndi Kleen * call below. 119d02fc6bcSAndi Kleen */ 120d02fc6bcSAndi Kleen lc = strdup(lc); 121d02fc6bcSAndi Kleen if (!lc) { 122d02fc6bcSAndi Kleen ret = -ENOMEM; 123d02fc6bcSAndi Kleen goto out; 124d02fc6bcSAndi Kleen } 125d02fc6bcSAndi Kleen 126d02fc6bcSAndi Kleen /* 127d02fc6bcSAndi Kleen * force to C locale to ensure kernel 128d02fc6bcSAndi Kleen * scale string is converted correctly. 129d02fc6bcSAndi Kleen * kernel uses default C locale. 130d02fc6bcSAndi Kleen */ 131d02fc6bcSAndi Kleen setlocale(LC_NUMERIC, "C"); 132d02fc6bcSAndi Kleen 133d02fc6bcSAndi Kleen *sval = strtod(scale, end); 134d02fc6bcSAndi Kleen 135d02fc6bcSAndi Kleen out: 136d02fc6bcSAndi Kleen /* restore locale */ 137d02fc6bcSAndi Kleen setlocale(LC_NUMERIC, lc); 138d02fc6bcSAndi Kleen free(lc); 139d02fc6bcSAndi Kleen return ret; 140d02fc6bcSAndi Kleen } 141d02fc6bcSAndi Kleen 142410136f5SStephane Eranian static int perf_pmu__parse_scale(struct perf_pmu_alias *alias, char *dir, char *name) 143410136f5SStephane Eranian { 144410136f5SStephane Eranian struct stat st; 145410136f5SStephane Eranian ssize_t sret; 146410136f5SStephane Eranian char scale[128]; 147410136f5SStephane Eranian int fd, ret = -1; 148410136f5SStephane Eranian char path[PATH_MAX]; 149410136f5SStephane Eranian 15011a64a05SBen Hutchings scnprintf(path, PATH_MAX, "%s/%s.scale", dir, name); 151410136f5SStephane Eranian 152410136f5SStephane Eranian fd = open(path, O_RDONLY); 153410136f5SStephane Eranian if (fd == -1) 154410136f5SStephane Eranian return -1; 155410136f5SStephane Eranian 156410136f5SStephane Eranian if (fstat(fd, &st) < 0) 157410136f5SStephane Eranian goto error; 158410136f5SStephane Eranian 159410136f5SStephane Eranian sret = read(fd, scale, sizeof(scale)-1); 160410136f5SStephane Eranian if (sret < 0) 161410136f5SStephane Eranian goto error; 162410136f5SStephane Eranian 1639ecae065SMadhavan Srinivasan if (scale[sret - 1] == '\n') 1649ecae065SMadhavan Srinivasan scale[sret - 1] = '\0'; 1659ecae065SMadhavan Srinivasan else 166410136f5SStephane Eranian scale[sret] = '\0'; 1679ecae065SMadhavan Srinivasan 168a55ab7c4SJin Yao ret = perf_pmu__convert_scale(scale, NULL, &alias->scale); 169410136f5SStephane Eranian error: 170410136f5SStephane Eranian close(fd); 171410136f5SStephane Eranian return ret; 172410136f5SStephane Eranian } 173410136f5SStephane Eranian 174410136f5SStephane Eranian static int perf_pmu__parse_unit(struct perf_pmu_alias *alias, char *dir, char *name) 175410136f5SStephane Eranian { 176410136f5SStephane Eranian char path[PATH_MAX]; 177410136f5SStephane Eranian ssize_t sret; 178410136f5SStephane Eranian int fd; 179410136f5SStephane Eranian 18011a64a05SBen Hutchings scnprintf(path, PATH_MAX, "%s/%s.unit", dir, name); 181410136f5SStephane Eranian 182410136f5SStephane Eranian fd = open(path, O_RDONLY); 183410136f5SStephane Eranian if (fd == -1) 184410136f5SStephane Eranian return -1; 185410136f5SStephane Eranian 186410136f5SStephane Eranian sret = read(fd, alias->unit, UNIT_MAX_LEN); 187410136f5SStephane Eranian if (sret < 0) 188410136f5SStephane Eranian goto error; 189410136f5SStephane Eranian 190410136f5SStephane Eranian close(fd); 191410136f5SStephane Eranian 1929ecae065SMadhavan Srinivasan if (alias->unit[sret - 1] == '\n') 1939ecae065SMadhavan Srinivasan alias->unit[sret - 1] = '\0'; 1949ecae065SMadhavan Srinivasan else 195410136f5SStephane Eranian alias->unit[sret] = '\0'; 196410136f5SStephane Eranian 197410136f5SStephane Eranian return 0; 198410136f5SStephane Eranian error: 199410136f5SStephane Eranian close(fd); 200410136f5SStephane Eranian alias->unit[0] = '\0'; 201410136f5SStephane Eranian return -1; 202410136f5SStephane Eranian } 203410136f5SStephane Eranian 204044330c1SMatt Fleming static int 205044330c1SMatt Fleming perf_pmu__parse_per_pkg(struct perf_pmu_alias *alias, char *dir, char *name) 206044330c1SMatt Fleming { 207044330c1SMatt Fleming char path[PATH_MAX]; 208044330c1SMatt Fleming int fd; 209044330c1SMatt Fleming 21011a64a05SBen Hutchings scnprintf(path, PATH_MAX, "%s/%s.per-pkg", dir, name); 211044330c1SMatt Fleming 212044330c1SMatt Fleming fd = open(path, O_RDONLY); 213044330c1SMatt Fleming if (fd == -1) 214044330c1SMatt Fleming return -1; 215044330c1SMatt Fleming 216044330c1SMatt Fleming close(fd); 217044330c1SMatt Fleming 218044330c1SMatt Fleming alias->per_pkg = true; 219044330c1SMatt Fleming return 0; 220044330c1SMatt Fleming } 221044330c1SMatt Fleming 2221d9e446bSJiri Olsa static int perf_pmu__parse_snapshot(struct perf_pmu_alias *alias, 2231d9e446bSJiri Olsa char *dir, char *name) 2241d9e446bSJiri Olsa { 2251d9e446bSJiri Olsa char path[PATH_MAX]; 2261d9e446bSJiri Olsa int fd; 2271d9e446bSJiri Olsa 22811a64a05SBen Hutchings scnprintf(path, PATH_MAX, "%s/%s.snapshot", dir, name); 2291d9e446bSJiri Olsa 2301d9e446bSJiri Olsa fd = open(path, O_RDONLY); 2311d9e446bSJiri Olsa if (fd == -1) 2321d9e446bSJiri Olsa return -1; 2331d9e446bSJiri Olsa 2341d9e446bSJiri Olsa alias->snapshot = true; 2351d9e446bSJiri Olsa close(fd); 2361d9e446bSJiri Olsa return 0; 2371d9e446bSJiri Olsa } 2381d9e446bSJiri Olsa 2396dde6429SThomas Richter static void perf_pmu_assign_str(char *name, const char *field, char **old_str, 2406dde6429SThomas Richter char **new_str) 2416dde6429SThomas Richter { 2426dde6429SThomas Richter if (!*old_str) 2436dde6429SThomas Richter goto set_new; 2446dde6429SThomas Richter 2456dde6429SThomas Richter if (*new_str) { /* Have new string, check with old */ 2466dde6429SThomas Richter if (strcasecmp(*old_str, *new_str)) 2476dde6429SThomas Richter pr_debug("alias %s differs in field '%s'\n", 2486dde6429SThomas Richter name, field); 2496dde6429SThomas Richter zfree(old_str); 2506dde6429SThomas Richter } else /* Nothing new --> keep old string */ 2516dde6429SThomas Richter return; 2526dde6429SThomas Richter set_new: 2536dde6429SThomas Richter *old_str = *new_str; 2546dde6429SThomas Richter *new_str = NULL; 2556dde6429SThomas Richter } 2566dde6429SThomas Richter 2576dde6429SThomas Richter static void perf_pmu_update_alias(struct perf_pmu_alias *old, 2586dde6429SThomas Richter struct perf_pmu_alias *newalias) 2596dde6429SThomas Richter { 2606dde6429SThomas Richter perf_pmu_assign_str(old->name, "desc", &old->desc, &newalias->desc); 2616dde6429SThomas Richter perf_pmu_assign_str(old->name, "long_desc", &old->long_desc, 2626dde6429SThomas Richter &newalias->long_desc); 2636dde6429SThomas Richter perf_pmu_assign_str(old->name, "topic", &old->topic, &newalias->topic); 2646dde6429SThomas Richter perf_pmu_assign_str(old->name, "metric_expr", &old->metric_expr, 2656dde6429SThomas Richter &newalias->metric_expr); 2666dde6429SThomas Richter perf_pmu_assign_str(old->name, "metric_name", &old->metric_name, 2676dde6429SThomas Richter &newalias->metric_name); 2686dde6429SThomas Richter perf_pmu_assign_str(old->name, "value", &old->str, &newalias->str); 2696dde6429SThomas Richter old->scale = newalias->scale; 2706dde6429SThomas Richter old->per_pkg = newalias->per_pkg; 2716dde6429SThomas Richter old->snapshot = newalias->snapshot; 2726dde6429SThomas Richter memcpy(old->unit, newalias->unit, sizeof(old->unit)); 2736dde6429SThomas Richter } 2746dde6429SThomas Richter 2756dde6429SThomas Richter /* Delete an alias entry. */ 2766dde6429SThomas Richter static void perf_pmu_free_alias(struct perf_pmu_alias *newalias) 2776dde6429SThomas Richter { 2786dde6429SThomas Richter zfree(&newalias->name); 2796dde6429SThomas Richter zfree(&newalias->desc); 2806dde6429SThomas Richter zfree(&newalias->long_desc); 2816dde6429SThomas Richter zfree(&newalias->topic); 2826dde6429SThomas Richter zfree(&newalias->str); 2836dde6429SThomas Richter zfree(&newalias->metric_expr); 2846dde6429SThomas Richter zfree(&newalias->metric_name); 2856dde6429SThomas Richter parse_events_terms__purge(&newalias->terms); 2866dde6429SThomas Richter free(newalias); 2876dde6429SThomas Richter } 2886dde6429SThomas Richter 2896dde6429SThomas Richter /* Merge an alias, search in alias list. If this name is already 2906dde6429SThomas Richter * present merge both of them to combine all information. 2916dde6429SThomas Richter */ 2926dde6429SThomas Richter static bool perf_pmu_merge_alias(struct perf_pmu_alias *newalias, 2936dde6429SThomas Richter struct list_head *alist) 2946dde6429SThomas Richter { 2956dde6429SThomas Richter struct perf_pmu_alias *a; 2966dde6429SThomas Richter 2976dde6429SThomas Richter list_for_each_entry(a, alist, list) { 2986dde6429SThomas Richter if (!strcasecmp(newalias->name, a->name)) { 2996dde6429SThomas Richter perf_pmu_update_alias(a, newalias); 3006dde6429SThomas Richter perf_pmu_free_alias(newalias); 3016dde6429SThomas Richter return true; 3026dde6429SThomas Richter } 3036dde6429SThomas Richter } 3046dde6429SThomas Richter return false; 3056dde6429SThomas Richter } 3066dde6429SThomas Richter 30770c646e0SSukadev Bhattiprolu static int __perf_pmu__new_alias(struct list_head *list, char *dir, char *name, 308fedb2b51SAndi Kleen char *desc, char *val, 309fedb2b51SAndi Kleen char *long_desc, char *topic, 31000636c3bSAndi Kleen char *unit, char *perpkg, 31196284814SAndi Kleen char *metric_expr, 31296284814SAndi Kleen char *metric_name) 313a6146d50SZheng Yan { 3140c24d6fbSThomas Richter struct parse_events_term *term; 3155c6ccc37SArnaldo Carvalho de Melo struct perf_pmu_alias *alias; 316a6146d50SZheng Yan int ret; 317fedb2b51SAndi Kleen int num; 3180c24d6fbSThomas Richter char newval[256]; 319a6146d50SZheng Yan 320a6146d50SZheng Yan alias = malloc(sizeof(*alias)); 321a6146d50SZheng Yan if (!alias) 322a6146d50SZheng Yan return -ENOMEM; 323a6146d50SZheng Yan 324a6146d50SZheng Yan INIT_LIST_HEAD(&alias->terms); 325410136f5SStephane Eranian alias->scale = 1.0; 326410136f5SStephane Eranian alias->unit[0] = '\0'; 327044330c1SMatt Fleming alias->per_pkg = false; 32884530920SStephane Eranian alias->snapshot = 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 3836dde6429SThomas Richter if (!perf_pmu_merge_alias(alias, list)) 384a6146d50SZheng Yan list_add_tail(&alias->list, list); 385410136f5SStephane Eranian 386a6146d50SZheng Yan return 0; 387a6146d50SZheng Yan } 388a6146d50SZheng Yan 38970c646e0SSukadev Bhattiprolu static int perf_pmu__new_alias(struct list_head *list, char *dir, char *name, FILE *file) 39070c646e0SSukadev Bhattiprolu { 39170c646e0SSukadev Bhattiprolu char buf[256]; 39270c646e0SSukadev Bhattiprolu int ret; 39370c646e0SSukadev Bhattiprolu 39470c646e0SSukadev Bhattiprolu ret = fread(buf, 1, sizeof(buf), file); 39570c646e0SSukadev Bhattiprolu if (ret == 0) 39670c646e0SSukadev Bhattiprolu return -EINVAL; 39770c646e0SSukadev Bhattiprolu 39870c646e0SSukadev Bhattiprolu buf[ret] = 0; 39970c646e0SSukadev Bhattiprolu 400ea23ac73SThomas Richter /* Remove trailing newline from sysfs file */ 40113c230abSArnaldo Carvalho de Melo strim(buf); 402ea23ac73SThomas Richter 403fedb2b51SAndi Kleen return __perf_pmu__new_alias(list, dir, name, NULL, buf, NULL, NULL, NULL, 40496284814SAndi Kleen NULL, NULL, NULL); 40570c646e0SSukadev Bhattiprolu } 40670c646e0SSukadev Bhattiprolu 40746441bdcSMatt Fleming static inline bool pmu_alias_info_file(char *name) 40846441bdcSMatt Fleming { 40946441bdcSMatt Fleming size_t len; 41046441bdcSMatt Fleming 41146441bdcSMatt Fleming len = strlen(name); 41246441bdcSMatt Fleming if (len > 5 && !strcmp(name + len - 5, ".unit")) 41346441bdcSMatt Fleming return true; 41446441bdcSMatt Fleming if (len > 6 && !strcmp(name + len - 6, ".scale")) 41546441bdcSMatt Fleming return true; 416044330c1SMatt Fleming if (len > 8 && !strcmp(name + len - 8, ".per-pkg")) 417044330c1SMatt Fleming return true; 4181d9e446bSJiri Olsa if (len > 9 && !strcmp(name + len - 9, ".snapshot")) 4191d9e446bSJiri Olsa return true; 42046441bdcSMatt Fleming 42146441bdcSMatt Fleming return false; 42246441bdcSMatt Fleming } 42346441bdcSMatt Fleming 424a6146d50SZheng Yan /* 425a6146d50SZheng Yan * Process all the sysfs attributes located under the directory 426a6146d50SZheng Yan * specified in 'dir' parameter. 427a6146d50SZheng Yan */ 428a6146d50SZheng Yan static int pmu_aliases_parse(char *dir, struct list_head *head) 429a6146d50SZheng Yan { 430a6146d50SZheng Yan struct dirent *evt_ent; 431a6146d50SZheng Yan DIR *event_dir; 432a6146d50SZheng Yan 433a6146d50SZheng Yan event_dir = opendir(dir); 434a6146d50SZheng Yan if (!event_dir) 435a6146d50SZheng Yan return -EINVAL; 436a6146d50SZheng Yan 437940db6dcSAndi Kleen while ((evt_ent = readdir(event_dir))) { 438a6146d50SZheng Yan char path[PATH_MAX]; 439a6146d50SZheng Yan char *name = evt_ent->d_name; 440a6146d50SZheng Yan FILE *file; 441a6146d50SZheng Yan 442a6146d50SZheng Yan if (!strcmp(name, ".") || !strcmp(name, "..")) 443a6146d50SZheng Yan continue; 444a6146d50SZheng Yan 445410136f5SStephane Eranian /* 44646441bdcSMatt Fleming * skip info files parsed in perf_pmu__new_alias() 447410136f5SStephane Eranian */ 44846441bdcSMatt Fleming if (pmu_alias_info_file(name)) 449410136f5SStephane Eranian continue; 450410136f5SStephane Eranian 45177f18153SJiri Olsa scnprintf(path, PATH_MAX, "%s/%s", dir, name); 452a6146d50SZheng Yan 453a6146d50SZheng Yan file = fopen(path, "r"); 454940db6dcSAndi Kleen if (!file) { 455940db6dcSAndi Kleen pr_debug("Cannot open %s\n", path); 456940db6dcSAndi Kleen continue; 457940db6dcSAndi Kleen } 458410136f5SStephane Eranian 459940db6dcSAndi Kleen if (perf_pmu__new_alias(head, dir, name, file) < 0) 460940db6dcSAndi Kleen pr_debug("Cannot set up %s\n", name); 461a6146d50SZheng Yan fclose(file); 462a6146d50SZheng Yan } 463a6146d50SZheng Yan 464a6146d50SZheng Yan closedir(event_dir); 465940db6dcSAndi Kleen return 0; 466a6146d50SZheng Yan } 467a6146d50SZheng Yan 468a6146d50SZheng Yan /* 469a6146d50SZheng Yan * Reading the pmu event aliases definition, which should be located at: 470a6146d50SZheng Yan * /sys/bus/event_source/devices/<dev>/events as sysfs group attributes. 471a6146d50SZheng Yan */ 472b6b96fb4SAdrian Hunter static int pmu_aliases(const char *name, struct list_head *head) 473a6146d50SZheng Yan { 474a6146d50SZheng Yan struct stat st; 475a6146d50SZheng Yan char path[PATH_MAX]; 476cf38fadaSArnaldo Carvalho de Melo const char *sysfs = sysfs__mountpoint(); 477a6146d50SZheng Yan 478a6146d50SZheng Yan if (!sysfs) 479a6146d50SZheng Yan return -1; 480a6146d50SZheng Yan 481a6146d50SZheng Yan snprintf(path, PATH_MAX, 482a6146d50SZheng Yan "%s/bus/event_source/devices/%s/events", sysfs, name); 483a6146d50SZheng Yan 484a6146d50SZheng Yan if (stat(path, &st) < 0) 4853fded963SJiri Olsa return 0; /* no error if 'events' does not exist */ 486a6146d50SZheng Yan 487a6146d50SZheng Yan if (pmu_aliases_parse(path, head)) 488a6146d50SZheng Yan return -1; 489a6146d50SZheng Yan 490a6146d50SZheng Yan return 0; 491a6146d50SZheng Yan } 492a6146d50SZheng Yan 4935c6ccc37SArnaldo Carvalho de Melo static int pmu_alias_terms(struct perf_pmu_alias *alias, 494a6146d50SZheng Yan struct list_head *terms) 495a6146d50SZheng Yan { 4967c2f8164SJiri Olsa struct parse_events_term *term, *cloned; 497a6146d50SZheng Yan LIST_HEAD(list); 498a6146d50SZheng Yan int ret; 499a6146d50SZheng Yan 500a6146d50SZheng Yan list_for_each_entry(term, &alias->terms, list) { 5017c2f8164SJiri Olsa ret = parse_events_term__clone(&cloned, term); 502a6146d50SZheng Yan if (ret) { 503682dc24cSArnaldo Carvalho de Melo parse_events_terms__purge(&list); 504a6146d50SZheng Yan return ret; 505a6146d50SZheng Yan } 506c2f1ceadSAndi Kleen /* 507c2f1ceadSAndi Kleen * Weak terms don't override command line options, 508c2f1ceadSAndi Kleen * which we don't want for implicit terms in aliases. 509c2f1ceadSAndi Kleen */ 510c2f1ceadSAndi Kleen cloned->weak = true; 5117c2f8164SJiri Olsa list_add_tail(&cloned->list, &list); 512a6146d50SZheng Yan } 513a6146d50SZheng Yan list_splice(&list, terms); 514a6146d50SZheng Yan return 0; 515a6146d50SZheng Yan } 516a6146d50SZheng Yan 517cd82a32eSJiri Olsa /* 518cd82a32eSJiri Olsa * Reading/parsing the default pmu type value, which should be 519cd82a32eSJiri Olsa * located at: 520cd82a32eSJiri Olsa * /sys/bus/event_source/devices/<dev>/type as sysfs attribute. 521cd82a32eSJiri Olsa */ 522b6b96fb4SAdrian Hunter static int pmu_type(const char *name, __u32 *type) 523cd82a32eSJiri Olsa { 524cd82a32eSJiri Olsa struct stat st; 525cd82a32eSJiri Olsa char path[PATH_MAX]; 526cd82a32eSJiri Olsa FILE *file; 527cd82a32eSJiri Olsa int ret = 0; 528cf38fadaSArnaldo Carvalho de Melo const char *sysfs = sysfs__mountpoint(); 529cd82a32eSJiri Olsa 530cd82a32eSJiri Olsa if (!sysfs) 531cd82a32eSJiri Olsa return -1; 532cd82a32eSJiri Olsa 533cd82a32eSJiri Olsa snprintf(path, PATH_MAX, 53450a9667cSRobert Richter "%s" EVENT_SOURCE_DEVICE_PATH "%s/type", sysfs, name); 535cd82a32eSJiri Olsa 536cd82a32eSJiri Olsa if (stat(path, &st) < 0) 537cd82a32eSJiri Olsa return -1; 538cd82a32eSJiri Olsa 539cd82a32eSJiri Olsa file = fopen(path, "r"); 540cd82a32eSJiri Olsa if (!file) 541cd82a32eSJiri Olsa return -EINVAL; 542cd82a32eSJiri Olsa 543cd82a32eSJiri Olsa if (1 != fscanf(file, "%u", type)) 544cd82a32eSJiri Olsa ret = -1; 545cd82a32eSJiri Olsa 546cd82a32eSJiri Olsa fclose(file); 547cd82a32eSJiri Olsa return ret; 548cd82a32eSJiri Olsa } 549cd82a32eSJiri Olsa 55050a9667cSRobert Richter /* Add all pmus in sysfs to pmu list: */ 55150a9667cSRobert Richter static void pmu_read_sysfs(void) 55250a9667cSRobert Richter { 55350a9667cSRobert Richter char path[PATH_MAX]; 55450a9667cSRobert Richter DIR *dir; 55550a9667cSRobert Richter struct dirent *dent; 556cf38fadaSArnaldo Carvalho de Melo const char *sysfs = sysfs__mountpoint(); 55750a9667cSRobert Richter 55850a9667cSRobert Richter if (!sysfs) 55950a9667cSRobert Richter return; 56050a9667cSRobert Richter 56150a9667cSRobert Richter snprintf(path, PATH_MAX, 56250a9667cSRobert Richter "%s" EVENT_SOURCE_DEVICE_PATH, sysfs); 56350a9667cSRobert Richter 56450a9667cSRobert Richter dir = opendir(path); 56550a9667cSRobert Richter if (!dir) 56650a9667cSRobert Richter return; 56750a9667cSRobert Richter 56850a9667cSRobert Richter while ((dent = readdir(dir))) { 56950a9667cSRobert Richter if (!strcmp(dent->d_name, ".") || !strcmp(dent->d_name, "..")) 57050a9667cSRobert Richter continue; 57150a9667cSRobert Richter /* add to static LIST_HEAD(pmus): */ 57250a9667cSRobert Richter perf_pmu__find(dent->d_name); 57350a9667cSRobert Richter } 57450a9667cSRobert Richter 57550a9667cSRobert Richter closedir(dir); 57650a9667cSRobert Richter } 57750a9667cSRobert Richter 578f854839bSJiri Olsa static struct perf_cpu_map *__pmu_cpumask(const char *path) 57966ec1191SMark Rutland { 58066ec1191SMark Rutland FILE *file; 581f854839bSJiri Olsa struct perf_cpu_map *cpus; 58266ec1191SMark Rutland 58366ec1191SMark Rutland file = fopen(path, "r"); 58466ec1191SMark Rutland if (!file) 58566ec1191SMark Rutland return NULL; 58666ec1191SMark Rutland 5879c3516d1SJiri Olsa cpus = perf_cpu_map__read(file); 58866ec1191SMark Rutland fclose(file); 58966ec1191SMark Rutland return cpus; 59066ec1191SMark Rutland } 59166ec1191SMark Rutland 59266ec1191SMark Rutland /* 59366ec1191SMark Rutland * Uncore PMUs have a "cpumask" file under sysfs. CPU PMUs (e.g. on arm/arm64) 59466ec1191SMark Rutland * may have a "cpus" file. 59566ec1191SMark Rutland */ 59666ec1191SMark Rutland #define CPUS_TEMPLATE_UNCORE "%s/bus/event_source/devices/%s/cpumask" 59766ec1191SMark Rutland #define CPUS_TEMPLATE_CPU "%s/bus/event_source/devices/%s/cpus" 59866ec1191SMark Rutland 599f854839bSJiri Olsa static struct perf_cpu_map *pmu_cpumask(const char *name) 6007ae92e74SYan, Zheng { 6017ae92e74SYan, Zheng char path[PATH_MAX]; 602f854839bSJiri Olsa struct perf_cpu_map *cpus; 603cf38fadaSArnaldo Carvalho de Melo const char *sysfs = sysfs__mountpoint(); 6047e3fcffeSMark Rutland const char *templates[] = { 60566ec1191SMark Rutland CPUS_TEMPLATE_UNCORE, 60666ec1191SMark Rutland CPUS_TEMPLATE_CPU, 6077e3fcffeSMark Rutland NULL 6087e3fcffeSMark Rutland }; 6097e3fcffeSMark Rutland const char **template; 6107ae92e74SYan, Zheng 6117ae92e74SYan, Zheng if (!sysfs) 6127ae92e74SYan, Zheng return NULL; 6137ae92e74SYan, Zheng 6147e3fcffeSMark Rutland for (template = templates; *template; template++) { 6157e3fcffeSMark Rutland snprintf(path, PATH_MAX, *template, sysfs, name); 61666ec1191SMark Rutland cpus = __pmu_cpumask(path); 61766ec1191SMark Rutland if (cpus) 61866ec1191SMark Rutland return cpus; 6197e3fcffeSMark Rutland } 6207ae92e74SYan, Zheng 6217ae92e74SYan, Zheng return NULL; 62266ec1191SMark Rutland } 6237ae92e74SYan, Zheng 62466ec1191SMark Rutland static bool pmu_is_uncore(const char *name) 62566ec1191SMark Rutland { 62666ec1191SMark Rutland char path[PATH_MAX]; 627f854839bSJiri Olsa struct perf_cpu_map *cpus; 62866ec1191SMark Rutland const char *sysfs = sysfs__mountpoint(); 6297ae92e74SYan, Zheng 63066ec1191SMark Rutland snprintf(path, PATH_MAX, CPUS_TEMPLATE_UNCORE, sysfs, name); 63166ec1191SMark Rutland cpus = __pmu_cpumask(path); 63238f01d8dSJiri Olsa perf_cpu_map__put(cpus); 63366ec1191SMark Rutland 63466ec1191SMark Rutland return !!cpus; 6357ae92e74SYan, Zheng } 6367ae92e74SYan, Zheng 637933f82ffSSukadev Bhattiprolu /* 63814b22ae0SGanapatrao Kulkarni * PMU CORE devices have different name other than cpu in sysfs on some 639292c34c1SKan Liang * platforms. 640292c34c1SKan Liang * Looking for possible sysfs files to identify the arm core device. 64114b22ae0SGanapatrao Kulkarni */ 642292c34c1SKan Liang static int is_arm_pmu_core(const char *name) 64314b22ae0SGanapatrao Kulkarni { 64414b22ae0SGanapatrao Kulkarni struct stat st; 64514b22ae0SGanapatrao Kulkarni char path[PATH_MAX]; 64614b22ae0SGanapatrao Kulkarni const char *sysfs = sysfs__mountpoint(); 64714b22ae0SGanapatrao Kulkarni 64814b22ae0SGanapatrao Kulkarni if (!sysfs) 64914b22ae0SGanapatrao Kulkarni return 0; 65014b22ae0SGanapatrao Kulkarni 65114b22ae0SGanapatrao Kulkarni /* Look for cpu sysfs (specific to arm) */ 65214b22ae0SGanapatrao Kulkarni scnprintf(path, PATH_MAX, "%s/bus/event_source/devices/%s/cpus", 65314b22ae0SGanapatrao Kulkarni sysfs, name); 65414b22ae0SGanapatrao Kulkarni if (stat(path, &st) == 0) 65514b22ae0SGanapatrao Kulkarni return 1; 65614b22ae0SGanapatrao Kulkarni 65714b22ae0SGanapatrao Kulkarni return 0; 65814b22ae0SGanapatrao Kulkarni } 65914b22ae0SGanapatrao Kulkarni 66054e32dc0SGanapatrao Kulkarni static char *perf_pmu__getcpuid(struct perf_pmu *pmu) 661d77ade9fSAndi Kleen { 662d77ade9fSAndi Kleen char *cpuid; 663d77ade9fSAndi Kleen static bool printed; 664d77ade9fSAndi Kleen 665d77ade9fSAndi Kleen cpuid = getenv("PERF_CPUID"); 666d77ade9fSAndi Kleen if (cpuid) 667d77ade9fSAndi Kleen cpuid = strdup(cpuid); 668d77ade9fSAndi Kleen if (!cpuid) 66954e32dc0SGanapatrao Kulkarni cpuid = get_cpuid_str(pmu); 670d77ade9fSAndi Kleen if (!cpuid) 671d77ade9fSAndi Kleen return NULL; 672d77ade9fSAndi Kleen 673d77ade9fSAndi Kleen if (!printed) { 674d77ade9fSAndi Kleen pr_debug("Using CPUID %s\n", cpuid); 675d77ade9fSAndi Kleen printed = true; 676d77ade9fSAndi Kleen } 677d77ade9fSAndi Kleen return cpuid; 678d77ade9fSAndi Kleen } 679d77ade9fSAndi Kleen 68054e32dc0SGanapatrao Kulkarni struct pmu_events_map *perf_pmu__find_map(struct perf_pmu *pmu) 681d77ade9fSAndi Kleen { 682d77ade9fSAndi Kleen struct pmu_events_map *map; 68354e32dc0SGanapatrao Kulkarni char *cpuid = perf_pmu__getcpuid(pmu); 684d77ade9fSAndi Kleen int i; 685d77ade9fSAndi Kleen 686de3d0f12SGanapatrao Kulkarni /* on some platforms which uses cpus map, cpuid can be NULL for 687de3d0f12SGanapatrao Kulkarni * PMUs other than CORE PMUs. 688de3d0f12SGanapatrao Kulkarni */ 689de3d0f12SGanapatrao Kulkarni if (!cpuid) 690de3d0f12SGanapatrao Kulkarni return NULL; 691de3d0f12SGanapatrao Kulkarni 692d77ade9fSAndi Kleen i = 0; 693d77ade9fSAndi Kleen for (;;) { 694d77ade9fSAndi Kleen map = &pmu_events_map[i++]; 695d77ade9fSAndi Kleen if (!map->table) { 696d77ade9fSAndi Kleen map = NULL; 697d77ade9fSAndi Kleen break; 698d77ade9fSAndi Kleen } 699d77ade9fSAndi Kleen 7004cb7d3ecSThomas Richter if (!strcmp_cpuid_str(map->cpuid, cpuid)) 701d77ade9fSAndi Kleen break; 702d77ade9fSAndi Kleen } 703d77ade9fSAndi Kleen free(cpuid); 704d77ade9fSAndi Kleen return map; 705d77ade9fSAndi Kleen } 706d77ade9fSAndi Kleen 707730670b1SJohn Garry static bool pmu_uncore_alias_match(const char *pmu_name, const char *name) 708730670b1SJohn Garry { 709730670b1SJohn Garry char *tmp = NULL, *tok, *str; 710730670b1SJohn Garry bool res; 711730670b1SJohn Garry 712730670b1SJohn Garry str = strdup(pmu_name); 713730670b1SJohn Garry if (!str) 714730670b1SJohn Garry return false; 715730670b1SJohn Garry 716730670b1SJohn Garry /* 717730670b1SJohn Garry * uncore alias may be from different PMU with common prefix 718730670b1SJohn Garry */ 719730670b1SJohn Garry tok = strtok_r(str, ",", &tmp); 720730670b1SJohn Garry if (strncmp(pmu_name, tok, strlen(tok))) { 721730670b1SJohn Garry res = false; 722730670b1SJohn Garry goto out; 723730670b1SJohn Garry } 724730670b1SJohn Garry 725730670b1SJohn Garry /* 726730670b1SJohn Garry * Match more complex aliases where the alias name is a comma-delimited 727730670b1SJohn Garry * list of tokens, orderly contained in the matching PMU name. 728730670b1SJohn Garry * 729730670b1SJohn Garry * Example: For alias "socket,pmuname" and PMU "socketX_pmunameY", we 730730670b1SJohn Garry * match "socket" in "socketX_pmunameY" and then "pmuname" in 731730670b1SJohn Garry * "pmunameY". 732730670b1SJohn Garry */ 733730670b1SJohn Garry for (; tok; name += strlen(tok), tok = strtok_r(NULL, ",", &tmp)) { 734730670b1SJohn Garry name = strstr(name, tok); 735730670b1SJohn Garry if (!name) { 736730670b1SJohn Garry res = false; 737730670b1SJohn Garry goto out; 738730670b1SJohn Garry } 739730670b1SJohn Garry } 740730670b1SJohn Garry 741730670b1SJohn Garry res = true; 742730670b1SJohn Garry out: 743730670b1SJohn Garry free(str); 744730670b1SJohn Garry return res; 745730670b1SJohn Garry } 746730670b1SJohn Garry 747933f82ffSSukadev Bhattiprolu /* 748933f82ffSSukadev Bhattiprolu * From the pmu_events_map, find the table of PMU events that corresponds 749933f82ffSSukadev Bhattiprolu * to the current running CPU. Then, add all PMU events from that table 750933f82ffSSukadev Bhattiprolu * as aliases. 751933f82ffSSukadev Bhattiprolu */ 75254e32dc0SGanapatrao Kulkarni static void pmu_add_cpu_aliases(struct list_head *head, struct perf_pmu *pmu) 753933f82ffSSukadev Bhattiprolu { 754933f82ffSSukadev Bhattiprolu int i; 755933f82ffSSukadev Bhattiprolu struct pmu_events_map *map; 75654e32dc0SGanapatrao Kulkarni const char *name = pmu->name; 757933f82ffSSukadev Bhattiprolu 75854e32dc0SGanapatrao Kulkarni map = perf_pmu__find_map(pmu); 759d77ade9fSAndi Kleen if (!map) 760933f82ffSSukadev Bhattiprolu return; 761933f82ffSSukadev Bhattiprolu 762933f82ffSSukadev Bhattiprolu /* 763933f82ffSSukadev Bhattiprolu * Found a matching PMU events table. Create aliases 764933f82ffSSukadev Bhattiprolu */ 765933f82ffSSukadev Bhattiprolu i = 0; 766933f82ffSSukadev Bhattiprolu while (1) { 767599ee18fSJohn Garry const char *cpu_name = is_arm_pmu_core(name) ? name : "cpu"; 768599ee18fSJohn Garry struct pmu_event *pe = &map->table[i++]; 769599ee18fSJohn Garry const char *pname = pe->pmu ? pe->pmu : cpu_name; 770fedb2b51SAndi Kleen 771b18f3e36SAndi Kleen if (!pe->name) { 772b18f3e36SAndi Kleen if (pe->metric_group || pe->metric_name) 773b18f3e36SAndi Kleen continue; 774933f82ffSSukadev Bhattiprolu break; 775b18f3e36SAndi Kleen } 776933f82ffSSukadev Bhattiprolu 777e94d6b7fSKan Liang if (pmu_is_uncore(name) && 778730670b1SJohn Garry pmu_uncore_alias_match(pname, name)) 779e94d6b7fSKan Liang goto new_alias; 780e94d6b7fSKan Liang 781ea1fa48cSThomas Richter if (strcmp(pname, name)) 78214b22ae0SGanapatrao Kulkarni continue; 783fedb2b51SAndi Kleen 784e94d6b7fSKan Liang new_alias: 785933f82ffSSukadev Bhattiprolu /* need type casts to override 'const' */ 786933f82ffSSukadev Bhattiprolu __perf_pmu__new_alias(head, NULL, (char *)pe->name, 787c8d6828aSSukadev Bhattiprolu (char *)pe->desc, (char *)pe->event, 788fedb2b51SAndi Kleen (char *)pe->long_desc, (char *)pe->topic, 78900636c3bSAndi Kleen (char *)pe->unit, (char *)pe->perpkg, 79096284814SAndi Kleen (char *)pe->metric_expr, 79196284814SAndi Kleen (char *)pe->metric_name); 792933f82ffSSukadev Bhattiprolu } 793933f82ffSSukadev Bhattiprolu } 794933f82ffSSukadev Bhattiprolu 795c5de47f2SSukadev Bhattiprolu struct perf_event_attr * __weak 796dc0a6202SAdrian Hunter perf_pmu__get_default_config(struct perf_pmu *pmu __maybe_unused) 797dc0a6202SAdrian Hunter { 798dc0a6202SAdrian Hunter return NULL; 799dc0a6202SAdrian Hunter } 800dc0a6202SAdrian Hunter 80190a86bdeSJiri Olsa static int pmu_max_precise(const char *name) 80290a86bdeSJiri Olsa { 80390a86bdeSJiri Olsa char path[PATH_MAX]; 80490a86bdeSJiri Olsa int max_precise = -1; 80590a86bdeSJiri Olsa 80690a86bdeSJiri Olsa scnprintf(path, PATH_MAX, 80790a86bdeSJiri Olsa "bus/event_source/devices/%s/caps/max_precise", 80890a86bdeSJiri Olsa name); 80990a86bdeSJiri Olsa 81090a86bdeSJiri Olsa sysfs__read_int(path, &max_precise); 81190a86bdeSJiri Olsa return max_precise; 81290a86bdeSJiri Olsa } 81390a86bdeSJiri Olsa 814b6b96fb4SAdrian Hunter static struct perf_pmu *pmu_lookup(const char *name) 815cd82a32eSJiri Olsa { 816cd82a32eSJiri Olsa struct perf_pmu *pmu; 817cd82a32eSJiri Olsa LIST_HEAD(format); 818a6146d50SZheng Yan LIST_HEAD(aliases); 819cd82a32eSJiri Olsa __u32 type; 820cd82a32eSJiri Olsa 821cd82a32eSJiri Olsa /* 822cd82a32eSJiri Olsa * The pmu data we store & need consists of the pmu 823cd82a32eSJiri Olsa * type value and format definitions. Load both right 824cd82a32eSJiri Olsa * now. 825cd82a32eSJiri Olsa */ 826cd82a32eSJiri Olsa if (pmu_format(name, &format)) 827cd82a32eSJiri Olsa return NULL; 828cd82a32eSJiri Olsa 82915b22ed3SAndi Kleen /* 83015b22ed3SAndi Kleen * Check the type first to avoid unnecessary work. 83115b22ed3SAndi Kleen */ 83215b22ed3SAndi Kleen if (pmu_type(name, &type)) 83315b22ed3SAndi Kleen return NULL; 83415b22ed3SAndi Kleen 8353fded963SJiri Olsa if (pmu_aliases(name, &aliases)) 8363fded963SJiri Olsa return NULL; 8373fded963SJiri Olsa 838cd82a32eSJiri Olsa pmu = zalloc(sizeof(*pmu)); 839cd82a32eSJiri Olsa if (!pmu) 840cd82a32eSJiri Olsa return NULL; 841cd82a32eSJiri Olsa 8427ae92e74SYan, Zheng pmu->cpus = pmu_cpumask(name); 84354e32dc0SGanapatrao Kulkarni pmu->name = strdup(name); 84454e32dc0SGanapatrao Kulkarni pmu->type = type; 84566ec1191SMark Rutland pmu->is_uncore = pmu_is_uncore(name); 84690a86bdeSJiri Olsa pmu->max_precise = pmu_max_precise(name); 84754e32dc0SGanapatrao Kulkarni pmu_add_cpu_aliases(&aliases, pmu); 84866ec1191SMark Rutland 849cd82a32eSJiri Olsa INIT_LIST_HEAD(&pmu->format); 850a6146d50SZheng Yan INIT_LIST_HEAD(&pmu->aliases); 851cd82a32eSJiri Olsa list_splice(&format, &pmu->format); 852a6146d50SZheng Yan list_splice(&aliases, &pmu->aliases); 8539bc8f9feSRobert Richter list_add_tail(&pmu->list, &pmus); 854dc0a6202SAdrian Hunter 855dc0a6202SAdrian Hunter pmu->default_config = perf_pmu__get_default_config(pmu); 856dc0a6202SAdrian Hunter 857cd82a32eSJiri Olsa return pmu; 858cd82a32eSJiri Olsa } 859cd82a32eSJiri Olsa 860b6b96fb4SAdrian Hunter static struct perf_pmu *pmu_find(const char *name) 861cd82a32eSJiri Olsa { 862cd82a32eSJiri Olsa struct perf_pmu *pmu; 863cd82a32eSJiri Olsa 864cd82a32eSJiri Olsa list_for_each_entry(pmu, &pmus, list) 865cd82a32eSJiri Olsa if (!strcmp(pmu->name, name)) 866cd82a32eSJiri Olsa return pmu; 867cd82a32eSJiri Olsa 868cd82a32eSJiri Olsa return NULL; 869cd82a32eSJiri Olsa } 870cd82a32eSJiri Olsa 87150a9667cSRobert Richter struct perf_pmu *perf_pmu__scan(struct perf_pmu *pmu) 87250a9667cSRobert Richter { 87350a9667cSRobert Richter /* 87450a9667cSRobert Richter * pmu iterator: If pmu is NULL, we start at the begin, 87550a9667cSRobert Richter * otherwise return the next pmu. Returns NULL on end. 87650a9667cSRobert Richter */ 87750a9667cSRobert Richter if (!pmu) { 87850a9667cSRobert Richter pmu_read_sysfs(); 87950a9667cSRobert Richter pmu = list_prepare_entry(pmu, &pmus, list); 88050a9667cSRobert Richter } 88150a9667cSRobert Richter list_for_each_entry_continue(pmu, &pmus, list) 88250a9667cSRobert Richter return pmu; 88350a9667cSRobert Richter return NULL; 88450a9667cSRobert Richter } 88550a9667cSRobert Richter 886b6b96fb4SAdrian Hunter struct perf_pmu *perf_pmu__find(const char *name) 887cd82a32eSJiri Olsa { 888cd82a32eSJiri Olsa struct perf_pmu *pmu; 889cd82a32eSJiri Olsa 890cd82a32eSJiri Olsa /* 891cd82a32eSJiri Olsa * Once PMU is loaded it stays in the list, 892cd82a32eSJiri Olsa * so we keep us from multiple reading/parsing 893cd82a32eSJiri Olsa * the pmu format definitions. 894cd82a32eSJiri Olsa */ 895cd82a32eSJiri Olsa pmu = pmu_find(name); 896cd82a32eSJiri Olsa if (pmu) 897cd82a32eSJiri Olsa return pmu; 898cd82a32eSJiri Olsa 899cd82a32eSJiri Olsa return pmu_lookup(name); 900cd82a32eSJiri Olsa } 901cd82a32eSJiri Olsa 9025c6ccc37SArnaldo Carvalho de Melo static struct perf_pmu_format * 90309ff6071SAdrian Hunter pmu_find_format(struct list_head *formats, const char *name) 904cd82a32eSJiri Olsa { 9055c6ccc37SArnaldo Carvalho de Melo struct perf_pmu_format *format; 906cd82a32eSJiri Olsa 907cd82a32eSJiri Olsa list_for_each_entry(format, formats, list) 908cd82a32eSJiri Olsa if (!strcmp(format->name, name)) 909cd82a32eSJiri Olsa return format; 910cd82a32eSJiri Olsa 911cd82a32eSJiri Olsa return NULL; 912cd82a32eSJiri Olsa } 913cd82a32eSJiri Olsa 91409ff6071SAdrian Hunter __u64 perf_pmu__format_bits(struct list_head *formats, const char *name) 91509ff6071SAdrian Hunter { 91609ff6071SAdrian Hunter struct perf_pmu_format *format = pmu_find_format(formats, name); 91709ff6071SAdrian Hunter __u64 bits = 0; 91809ff6071SAdrian Hunter int fbit; 91909ff6071SAdrian Hunter 92009ff6071SAdrian Hunter if (!format) 92109ff6071SAdrian Hunter return 0; 92209ff6071SAdrian Hunter 92309ff6071SAdrian Hunter for_each_set_bit(fbit, format->bits, PERF_PMU_FORMAT_BITS) 92409ff6071SAdrian Hunter bits |= 1ULL << fbit; 92509ff6071SAdrian Hunter 92609ff6071SAdrian Hunter return bits; 92709ff6071SAdrian Hunter } 92809ff6071SAdrian Hunter 929cd82a32eSJiri Olsa /* 930dc0a6202SAdrian Hunter * Sets value based on the format definition (format parameter) 931cd82a32eSJiri Olsa * and unformated value (value parameter). 932cd82a32eSJiri Olsa */ 933dc0a6202SAdrian Hunter static void pmu_format_value(unsigned long *format, __u64 value, __u64 *v, 934dc0a6202SAdrian Hunter bool zero) 935cd82a32eSJiri Olsa { 936cd82a32eSJiri Olsa unsigned long fbit, vbit; 937cd82a32eSJiri Olsa 938cd82a32eSJiri Olsa for (fbit = 0, vbit = 0; fbit < PERF_PMU_FORMAT_BITS; fbit++) { 939cd82a32eSJiri Olsa 940cd82a32eSJiri Olsa if (!test_bit(fbit, format)) 941cd82a32eSJiri Olsa continue; 942cd82a32eSJiri Olsa 943dc0a6202SAdrian Hunter if (value & (1llu << vbit++)) 944dc0a6202SAdrian Hunter *v |= (1llu << fbit); 945dc0a6202SAdrian Hunter else if (zero) 946dc0a6202SAdrian Hunter *v &= ~(1llu << fbit); 947cd82a32eSJiri Olsa } 948cd82a32eSJiri Olsa } 949cd82a32eSJiri Olsa 9500efe6b67SAdrian Hunter static __u64 pmu_format_max_value(const unsigned long *format) 9510efe6b67SAdrian Hunter { 9521b9caa10SJiri Olsa int w; 9530efe6b67SAdrian Hunter 9541b9caa10SJiri Olsa w = bitmap_weight(format, PERF_PMU_FORMAT_BITS); 9551b9caa10SJiri Olsa if (!w) 9561b9caa10SJiri Olsa return 0; 9571b9caa10SJiri Olsa if (w < 64) 9581b9caa10SJiri Olsa return (1ULL << w) - 1; 9591b9caa10SJiri Olsa return -1; 9600efe6b67SAdrian Hunter } 9610efe6b67SAdrian Hunter 962cd82a32eSJiri Olsa /* 963688d4dfcSCody P Schafer * Term is a string term, and might be a param-term. Try to look up it's value 964688d4dfcSCody P Schafer * in the remaining terms. 965688d4dfcSCody P Schafer * - We have a term like "base-or-format-term=param-term", 966688d4dfcSCody P Schafer * - We need to find the value supplied for "param-term" (with param-term named 967688d4dfcSCody P Schafer * in a config string) later on in the term list. 968688d4dfcSCody P Schafer */ 969688d4dfcSCody P Schafer static int pmu_resolve_param_term(struct parse_events_term *term, 970688d4dfcSCody P Schafer struct list_head *head_terms, 971688d4dfcSCody P Schafer __u64 *value) 972688d4dfcSCody P Schafer { 973688d4dfcSCody P Schafer struct parse_events_term *t; 974688d4dfcSCody P Schafer 975688d4dfcSCody P Schafer list_for_each_entry(t, head_terms, list) { 976688d4dfcSCody P Schafer if (t->type_val == PARSE_EVENTS__TERM_TYPE_NUM) { 977688d4dfcSCody P Schafer if (!strcmp(t->config, term->config)) { 978688d4dfcSCody P Schafer t->used = true; 979688d4dfcSCody P Schafer *value = t->val.num; 980688d4dfcSCody P Schafer return 0; 981688d4dfcSCody P Schafer } 982688d4dfcSCody P Schafer } 983688d4dfcSCody P Schafer } 984688d4dfcSCody P Schafer 985bb963e16SNamhyung Kim if (verbose > 0) 986688d4dfcSCody P Schafer printf("Required parameter '%s' not specified\n", term->config); 987688d4dfcSCody P Schafer 988688d4dfcSCody P Schafer return -1; 989688d4dfcSCody P Schafer } 990688d4dfcSCody P Schafer 991ffeb883eSHe Kuang static char *pmu_formats_string(struct list_head *formats) 992e64b020bSJiri Olsa { 993e64b020bSJiri Olsa struct perf_pmu_format *format; 99411db4e29SMasami Hiramatsu char *str = NULL; 99511db4e29SMasami Hiramatsu struct strbuf buf = STRBUF_INIT; 996e64b020bSJiri Olsa unsigned i = 0; 997e64b020bSJiri Olsa 998ffeb883eSHe Kuang if (!formats) 999e64b020bSJiri Olsa return NULL; 1000e64b020bSJiri Olsa 1001e64b020bSJiri Olsa /* sysfs exported terms */ 1002ffeb883eSHe Kuang list_for_each_entry(format, formats, list) 100311db4e29SMasami Hiramatsu if (strbuf_addf(&buf, i++ ? ",%s" : "%s", format->name) < 0) 100411db4e29SMasami Hiramatsu goto error; 1005e64b020bSJiri Olsa 1006ffeb883eSHe Kuang str = strbuf_detach(&buf, NULL); 100711db4e29SMasami Hiramatsu error: 1008ffeb883eSHe Kuang strbuf_release(&buf); 1009e64b020bSJiri Olsa 1010e64b020bSJiri Olsa return str; 1011e64b020bSJiri Olsa } 1012e64b020bSJiri Olsa 1013688d4dfcSCody P Schafer /* 1014cd82a32eSJiri Olsa * Setup one of config[12] attr members based on the 101588aca8d9SCody P Schafer * user input data - term parameter. 1016cd82a32eSJiri Olsa */ 1017cd82a32eSJiri Olsa static int pmu_config_term(struct list_head *formats, 1018cd82a32eSJiri Olsa struct perf_event_attr *attr, 1019dc0a6202SAdrian Hunter struct parse_events_term *term, 1020688d4dfcSCody P Schafer struct list_head *head_terms, 1021e64b020bSJiri Olsa bool zero, struct parse_events_error *err) 1022cd82a32eSJiri Olsa { 10235c6ccc37SArnaldo Carvalho de Melo struct perf_pmu_format *format; 1024cd82a32eSJiri Olsa __u64 *vp; 10250efe6b67SAdrian Hunter __u64 val, max_val; 1026cd82a32eSJiri Olsa 1027cd82a32eSJiri Olsa /* 1028688d4dfcSCody P Schafer * If this is a parameter we've already used for parameterized-eval, 1029688d4dfcSCody P Schafer * skip it in normal eval. 1030688d4dfcSCody P Schafer */ 1031688d4dfcSCody P Schafer if (term->used) 1032688d4dfcSCody P Schafer return 0; 1033688d4dfcSCody P Schafer 1034688d4dfcSCody P Schafer /* 1035cd82a32eSJiri Olsa * Hardcoded terms should be already in, so nothing 1036cd82a32eSJiri Olsa * to be done for them. 1037cd82a32eSJiri Olsa */ 1038cd82a32eSJiri Olsa if (parse_events__is_hardcoded_term(term)) 1039cd82a32eSJiri Olsa return 0; 1040cd82a32eSJiri Olsa 1041cd82a32eSJiri Olsa format = pmu_find_format(formats, term->config); 1042688d4dfcSCody P Schafer if (!format) { 1043bb963e16SNamhyung Kim if (verbose > 0) 1044688d4dfcSCody P Schafer printf("Invalid event/parameter '%s'\n", term->config); 1045e64b020bSJiri Olsa if (err) { 1046ffeb883eSHe Kuang char *pmu_term = pmu_formats_string(formats); 1047ffeb883eSHe Kuang 1048e64b020bSJiri Olsa err->idx = term->err_term; 1049e64b020bSJiri Olsa err->str = strdup("unknown term"); 1050ffeb883eSHe Kuang err->help = parse_events_formats_error_string(pmu_term); 1051ffeb883eSHe Kuang free(pmu_term); 1052e64b020bSJiri Olsa } 1053cd82a32eSJiri Olsa return -EINVAL; 1054688d4dfcSCody P Schafer } 1055cd82a32eSJiri Olsa 1056cd82a32eSJiri Olsa switch (format->value) { 1057cd82a32eSJiri Olsa case PERF_PMU_FORMAT_VALUE_CONFIG: 1058cd82a32eSJiri Olsa vp = &attr->config; 1059cd82a32eSJiri Olsa break; 1060cd82a32eSJiri Olsa case PERF_PMU_FORMAT_VALUE_CONFIG1: 1061cd82a32eSJiri Olsa vp = &attr->config1; 1062cd82a32eSJiri Olsa break; 1063cd82a32eSJiri Olsa case PERF_PMU_FORMAT_VALUE_CONFIG2: 1064cd82a32eSJiri Olsa vp = &attr->config2; 1065cd82a32eSJiri Olsa break; 1066cd82a32eSJiri Olsa default: 1067cd82a32eSJiri Olsa return -EINVAL; 1068cd82a32eSJiri Olsa } 1069cd82a32eSJiri Olsa 107016fa7e82SJiri Olsa /* 1071688d4dfcSCody P Schafer * Either directly use a numeric term, or try to translate string terms 1072688d4dfcSCody P Schafer * using event parameters. 107316fa7e82SJiri Olsa */ 107499e7138eSJiri Olsa if (term->type_val == PARSE_EVENTS__TERM_TYPE_NUM) { 107599e7138eSJiri Olsa if (term->no_value && 107699e7138eSJiri Olsa bitmap_weight(format->bits, PERF_PMU_FORMAT_BITS) > 1) { 107799e7138eSJiri Olsa if (err) { 107899e7138eSJiri Olsa err->idx = term->err_val; 107999e7138eSJiri Olsa err->str = strdup("no value assigned for term"); 108099e7138eSJiri Olsa } 108199e7138eSJiri Olsa return -EINVAL; 108299e7138eSJiri Olsa } 108399e7138eSJiri Olsa 1084688d4dfcSCody P Schafer val = term->val.num; 108599e7138eSJiri Olsa } else if (term->type_val == PARSE_EVENTS__TERM_TYPE_STR) { 1086688d4dfcSCody P Schafer if (strcmp(term->val.str, "?")) { 1087bb963e16SNamhyung Kim if (verbose > 0) { 1088688d4dfcSCody P Schafer pr_info("Invalid sysfs entry %s=%s\n", 1089688d4dfcSCody P Schafer term->config, term->val.str); 1090e64b020bSJiri Olsa } 1091e64b020bSJiri Olsa if (err) { 1092e64b020bSJiri Olsa err->idx = term->err_val; 1093e64b020bSJiri Olsa err->str = strdup("expected numeric value"); 1094e64b020bSJiri Olsa } 1095688d4dfcSCody P Schafer return -EINVAL; 1096688d4dfcSCody P Schafer } 1097688d4dfcSCody P Schafer 1098688d4dfcSCody P Schafer if (pmu_resolve_param_term(term, head_terms, &val)) 1099688d4dfcSCody P Schafer return -EINVAL; 1100688d4dfcSCody P Schafer } else 1101688d4dfcSCody P Schafer return -EINVAL; 1102688d4dfcSCody P Schafer 11030efe6b67SAdrian Hunter max_val = pmu_format_max_value(format->bits); 11040efe6b67SAdrian Hunter if (val > max_val) { 11050efe6b67SAdrian Hunter if (err) { 11060efe6b67SAdrian Hunter err->idx = term->err_val; 11070efe6b67SAdrian Hunter if (asprintf(&err->str, 11080efe6b67SAdrian Hunter "value too big for format, maximum is %llu", 11090efe6b67SAdrian Hunter (unsigned long long)max_val) < 0) 11100efe6b67SAdrian Hunter err->str = strdup("value too big for format"); 11110efe6b67SAdrian Hunter return -EINVAL; 11120efe6b67SAdrian Hunter } 11130efe6b67SAdrian Hunter /* 11140efe6b67SAdrian Hunter * Assume we don't care if !err, in which case the value will be 11150efe6b67SAdrian Hunter * silently truncated. 11160efe6b67SAdrian Hunter */ 11170efe6b67SAdrian Hunter } 11180efe6b67SAdrian Hunter 1119688d4dfcSCody P Schafer pmu_format_value(format->bits, val, vp, zero); 1120cd82a32eSJiri Olsa return 0; 1121cd82a32eSJiri Olsa } 1122cd82a32eSJiri Olsa 1123cff7f956SJiri Olsa int perf_pmu__config_terms(struct list_head *formats, 1124cff7f956SJiri Olsa struct perf_event_attr *attr, 1125dc0a6202SAdrian Hunter struct list_head *head_terms, 1126e64b020bSJiri Olsa bool zero, struct parse_events_error *err) 1127cd82a32eSJiri Olsa { 11286cee6cd3SArnaldo Carvalho de Melo struct parse_events_term *term; 1129cd82a32eSJiri Olsa 1130688d4dfcSCody P Schafer list_for_each_entry(term, head_terms, list) { 1131e64b020bSJiri Olsa if (pmu_config_term(formats, attr, term, head_terms, 1132e64b020bSJiri Olsa zero, err)) 1133cd82a32eSJiri Olsa return -EINVAL; 1134688d4dfcSCody P Schafer } 1135cd82a32eSJiri Olsa 1136cd82a32eSJiri Olsa return 0; 1137cd82a32eSJiri Olsa } 1138cd82a32eSJiri Olsa 1139cd82a32eSJiri Olsa /* 1140cd82a32eSJiri Olsa * Configures event's 'attr' parameter based on the: 1141cd82a32eSJiri Olsa * 1) users input - specified in terms parameter 1142cd82a32eSJiri Olsa * 2) pmu format definitions - specified by pmu parameter 1143cd82a32eSJiri Olsa */ 1144cd82a32eSJiri Olsa int perf_pmu__config(struct perf_pmu *pmu, struct perf_event_attr *attr, 1145e64b020bSJiri Olsa struct list_head *head_terms, 1146e64b020bSJiri Olsa struct parse_events_error *err) 1147cd82a32eSJiri Olsa { 1148dc0a6202SAdrian Hunter bool zero = !!pmu->default_config; 1149dc0a6202SAdrian Hunter 1150cd82a32eSJiri Olsa attr->type = pmu->type; 1151e64b020bSJiri Olsa return perf_pmu__config_terms(&pmu->format, attr, head_terms, 1152e64b020bSJiri Olsa zero, err); 1153cd82a32eSJiri Olsa } 1154cd82a32eSJiri Olsa 11555c6ccc37SArnaldo Carvalho de Melo static struct perf_pmu_alias *pmu_find_alias(struct perf_pmu *pmu, 11566cee6cd3SArnaldo Carvalho de Melo struct parse_events_term *term) 1157a6146d50SZheng Yan { 11585c6ccc37SArnaldo Carvalho de Melo struct perf_pmu_alias *alias; 1159a6146d50SZheng Yan char *name; 1160a6146d50SZheng Yan 1161a6146d50SZheng Yan if (parse_events__is_hardcoded_term(term)) 1162a6146d50SZheng Yan return NULL; 1163a6146d50SZheng Yan 1164a6146d50SZheng Yan if (term->type_val == PARSE_EVENTS__TERM_TYPE_NUM) { 1165a6146d50SZheng Yan if (term->val.num != 1) 1166a6146d50SZheng Yan return NULL; 1167a6146d50SZheng Yan if (pmu_find_format(&pmu->format, term->config)) 1168a6146d50SZheng Yan return NULL; 1169a6146d50SZheng Yan name = term->config; 1170a6146d50SZheng Yan } else if (term->type_val == PARSE_EVENTS__TERM_TYPE_STR) { 1171a6146d50SZheng Yan if (strcasecmp(term->config, "event")) 1172a6146d50SZheng Yan return NULL; 1173a6146d50SZheng Yan name = term->val.str; 1174a6146d50SZheng Yan } else { 1175a6146d50SZheng Yan return NULL; 1176a6146d50SZheng Yan } 1177a6146d50SZheng Yan 1178a6146d50SZheng Yan list_for_each_entry(alias, &pmu->aliases, list) { 1179a6146d50SZheng Yan if (!strcasecmp(alias->name, name)) 1180a6146d50SZheng Yan return alias; 1181a6146d50SZheng Yan } 1182a6146d50SZheng Yan return NULL; 1183a6146d50SZheng Yan } 1184a6146d50SZheng Yan 1185410136f5SStephane Eranian 11861d9e446bSJiri Olsa static int check_info_data(struct perf_pmu_alias *alias, 11871d9e446bSJiri Olsa struct perf_pmu_info *info) 1188410136f5SStephane Eranian { 1189410136f5SStephane Eranian /* 1190410136f5SStephane Eranian * Only one term in event definition can 11911d9e446bSJiri Olsa * define unit, scale and snapshot, fail 11921d9e446bSJiri Olsa * if there's more than one. 1193410136f5SStephane Eranian */ 1194b30a7d1fSArnaldo Carvalho de Melo if ((info->unit && alias->unit[0]) || 11951d9e446bSJiri Olsa (info->scale && alias->scale) || 11961d9e446bSJiri Olsa (info->snapshot && alias->snapshot)) 1197410136f5SStephane Eranian return -EINVAL; 1198410136f5SStephane Eranian 1199b30a7d1fSArnaldo Carvalho de Melo if (alias->unit[0]) 12001d9e446bSJiri Olsa info->unit = alias->unit; 1201410136f5SStephane Eranian 1202410136f5SStephane Eranian if (alias->scale) 12031d9e446bSJiri Olsa info->scale = alias->scale; 12041d9e446bSJiri Olsa 12051d9e446bSJiri Olsa if (alias->snapshot) 12061d9e446bSJiri Olsa info->snapshot = alias->snapshot; 1207410136f5SStephane Eranian 1208410136f5SStephane Eranian return 0; 1209410136f5SStephane Eranian } 1210410136f5SStephane Eranian 1211a6146d50SZheng Yan /* 1212a6146d50SZheng Yan * Find alias in the terms list and replace it with the terms 1213a6146d50SZheng Yan * defined for the alias 1214a6146d50SZheng Yan */ 1215410136f5SStephane Eranian int perf_pmu__check_alias(struct perf_pmu *pmu, struct list_head *head_terms, 121646441bdcSMatt Fleming struct perf_pmu_info *info) 1217a6146d50SZheng Yan { 12186cee6cd3SArnaldo Carvalho de Melo struct parse_events_term *term, *h; 12195c6ccc37SArnaldo Carvalho de Melo struct perf_pmu_alias *alias; 1220a6146d50SZheng Yan int ret; 1221a6146d50SZheng Yan 1222044330c1SMatt Fleming info->per_pkg = false; 1223044330c1SMatt Fleming 12248a398897SStephane Eranian /* 12258a398897SStephane Eranian * Mark unit and scale as not set 12268a398897SStephane Eranian * (different from default values, see below) 12278a398897SStephane Eranian */ 122846441bdcSMatt Fleming info->unit = NULL; 122946441bdcSMatt Fleming info->scale = 0.0; 12301d9e446bSJiri Olsa info->snapshot = false; 123137932c18SAndi Kleen info->metric_expr = NULL; 123296284814SAndi Kleen info->metric_name = NULL; 1233410136f5SStephane Eranian 1234a6146d50SZheng Yan list_for_each_entry_safe(term, h, head_terms, list) { 1235a6146d50SZheng Yan alias = pmu_find_alias(pmu, term); 1236a6146d50SZheng Yan if (!alias) 1237a6146d50SZheng Yan continue; 1238a6146d50SZheng Yan ret = pmu_alias_terms(alias, &term->list); 1239a6146d50SZheng Yan if (ret) 1240a6146d50SZheng Yan return ret; 1241410136f5SStephane Eranian 12421d9e446bSJiri Olsa ret = check_info_data(alias, info); 1243410136f5SStephane Eranian if (ret) 1244410136f5SStephane Eranian return ret; 1245410136f5SStephane Eranian 1246044330c1SMatt Fleming if (alias->per_pkg) 1247044330c1SMatt Fleming info->per_pkg = true; 124837932c18SAndi Kleen info->metric_expr = alias->metric_expr; 124996284814SAndi Kleen info->metric_name = alias->metric_name; 1250044330c1SMatt Fleming 1251e56fbc9dSArnaldo Carvalho de Melo list_del_init(&term->list); 1252a6146d50SZheng Yan free(term); 1253a6146d50SZheng Yan } 12548a398897SStephane Eranian 12558a398897SStephane Eranian /* 12568a398897SStephane Eranian * if no unit or scale foundin aliases, then 12578a398897SStephane Eranian * set defaults as for evsel 12588a398897SStephane Eranian * unit cannot left to NULL 12598a398897SStephane Eranian */ 126046441bdcSMatt Fleming if (info->unit == NULL) 126146441bdcSMatt Fleming info->unit = ""; 12628a398897SStephane Eranian 126346441bdcSMatt Fleming if (info->scale == 0.0) 126446441bdcSMatt Fleming info->scale = 1.0; 12658a398897SStephane Eranian 1266a6146d50SZheng Yan return 0; 1267a6146d50SZheng Yan } 1268a6146d50SZheng Yan 1269cd82a32eSJiri Olsa int perf_pmu__new_format(struct list_head *list, char *name, 1270cd82a32eSJiri Olsa int config, unsigned long *bits) 1271cd82a32eSJiri Olsa { 12725c6ccc37SArnaldo Carvalho de Melo struct perf_pmu_format *format; 1273cd82a32eSJiri Olsa 1274cd82a32eSJiri Olsa format = zalloc(sizeof(*format)); 1275cd82a32eSJiri Olsa if (!format) 1276cd82a32eSJiri Olsa return -ENOMEM; 1277cd82a32eSJiri Olsa 1278cd82a32eSJiri Olsa format->name = strdup(name); 1279cd82a32eSJiri Olsa format->value = config; 1280cd82a32eSJiri Olsa memcpy(format->bits, bits, sizeof(format->bits)); 1281cd82a32eSJiri Olsa 1282cd82a32eSJiri Olsa list_add_tail(&format->list, list); 1283cd82a32eSJiri Olsa return 0; 1284cd82a32eSJiri Olsa } 1285cd82a32eSJiri Olsa 1286cd82a32eSJiri Olsa void perf_pmu__set_format(unsigned long *bits, long from, long to) 1287cd82a32eSJiri Olsa { 1288cd82a32eSJiri Olsa long b; 1289cd82a32eSJiri Olsa 1290cd82a32eSJiri Olsa if (!to) 1291cd82a32eSJiri Olsa to = from; 1292cd82a32eSJiri Olsa 129315268138SSukadev Bhattiprolu memset(bits, 0, BITS_TO_BYTES(PERF_PMU_FORMAT_BITS)); 1294cd82a32eSJiri Olsa for (b = from; b <= to; b++) 1295cd82a32eSJiri Olsa set_bit(b, bits); 1296cd82a32eSJiri Olsa } 1297dc098b35SAndi Kleen 1298aaea3617SCody P Schafer static int sub_non_neg(int a, int b) 1299aaea3617SCody P Schafer { 1300aaea3617SCody P Schafer if (b > a) 1301aaea3617SCody P Schafer return 0; 1302aaea3617SCody P Schafer return a - b; 1303aaea3617SCody P Schafer } 1304aaea3617SCody P Schafer 1305dc098b35SAndi Kleen static char *format_alias(char *buf, int len, struct perf_pmu *pmu, 1306dc098b35SAndi Kleen struct perf_pmu_alias *alias) 1307dc098b35SAndi Kleen { 1308aaea3617SCody P Schafer struct parse_events_term *term; 1309aaea3617SCody P Schafer int used = snprintf(buf, len, "%s/%s", pmu->name, alias->name); 1310aaea3617SCody P Schafer 1311aaea3617SCody P Schafer list_for_each_entry(term, &alias->terms, list) { 1312aaea3617SCody P Schafer if (term->type_val == PARSE_EVENTS__TERM_TYPE_STR) 1313aaea3617SCody P Schafer used += snprintf(buf + used, sub_non_neg(len, used), 1314aaea3617SCody P Schafer ",%s=%s", term->config, 1315aaea3617SCody P Schafer term->val.str); 1316aaea3617SCody P Schafer } 1317aaea3617SCody P Schafer 1318aaea3617SCody P Schafer if (sub_non_neg(len, used) > 0) { 1319aaea3617SCody P Schafer buf[used] = '/'; 1320aaea3617SCody P Schafer used++; 1321aaea3617SCody P Schafer } 1322aaea3617SCody P Schafer if (sub_non_neg(len, used) > 0) { 1323aaea3617SCody P Schafer buf[used] = '\0'; 1324aaea3617SCody P Schafer used++; 1325aaea3617SCody P Schafer } else 1326aaea3617SCody P Schafer buf[len - 1] = '\0'; 1327aaea3617SCody P Schafer 1328dc098b35SAndi Kleen return buf; 1329dc098b35SAndi Kleen } 1330dc098b35SAndi Kleen 1331dc098b35SAndi Kleen static char *format_alias_or(char *buf, int len, struct perf_pmu *pmu, 1332dc098b35SAndi Kleen struct perf_pmu_alias *alias) 1333dc098b35SAndi Kleen { 1334dc098b35SAndi Kleen snprintf(buf, len, "%s OR %s/%s/", alias->name, pmu->name, alias->name); 1335dc098b35SAndi Kleen return buf; 1336dc098b35SAndi Kleen } 1337dc098b35SAndi Kleen 1338dd5f1036SAndi Kleen struct sevent { 133908e60ed1SAndi Kleen char *name; 134008e60ed1SAndi Kleen char *desc; 1341dd5f1036SAndi Kleen char *topic; 1342f2361024SAndi Kleen char *str; 1343f2361024SAndi Kleen char *pmu; 13447f372a63SAndi Kleen char *metric_expr; 134596284814SAndi Kleen char *metric_name; 134608e60ed1SAndi Kleen }; 134708e60ed1SAndi Kleen 1348dd5f1036SAndi Kleen static int cmp_sevent(const void *a, const void *b) 1349dc098b35SAndi Kleen { 1350dd5f1036SAndi Kleen const struct sevent *as = a; 1351dd5f1036SAndi Kleen const struct sevent *bs = b; 135208e60ed1SAndi Kleen 135308e60ed1SAndi Kleen /* Put extra events last */ 135408e60ed1SAndi Kleen if (!!as->desc != !!bs->desc) 135508e60ed1SAndi Kleen return !!as->desc - !!bs->desc; 1356dd5f1036SAndi Kleen if (as->topic && bs->topic) { 1357dd5f1036SAndi Kleen int n = strcmp(as->topic, bs->topic); 1358dd5f1036SAndi Kleen 1359dd5f1036SAndi Kleen if (n) 1360dd5f1036SAndi Kleen return n; 1361dd5f1036SAndi Kleen } 136208e60ed1SAndi Kleen return strcmp(as->name, bs->name); 136308e60ed1SAndi Kleen } 136408e60ed1SAndi Kleen 136508e60ed1SAndi Kleen static void wordwrap(char *s, int start, int max, int corr) 136608e60ed1SAndi Kleen { 136708e60ed1SAndi Kleen int column = start; 136808e60ed1SAndi Kleen int n; 136908e60ed1SAndi Kleen 137008e60ed1SAndi Kleen while (*s) { 137108e60ed1SAndi Kleen int wlen = strcspn(s, " \t"); 137208e60ed1SAndi Kleen 137308e60ed1SAndi Kleen if (column + wlen >= max && column > start) { 137408e60ed1SAndi Kleen printf("\n%*s", start, ""); 137508e60ed1SAndi Kleen column = start + corr; 137608e60ed1SAndi Kleen } 137708e60ed1SAndi Kleen n = printf("%s%.*s", column > start ? " " : "", wlen, s); 137808e60ed1SAndi Kleen if (n <= 0) 137908e60ed1SAndi Kleen break; 138008e60ed1SAndi Kleen s += wlen; 138108e60ed1SAndi Kleen column += n; 138232858480SArnaldo Carvalho de Melo s = skip_spaces(s); 138308e60ed1SAndi Kleen } 1384dc098b35SAndi Kleen } 1385dc098b35SAndi Kleen 1386c8d6828aSSukadev Bhattiprolu void print_pmu_events(const char *event_glob, bool name_only, bool quiet_flag, 1387bf874fcfSAndi Kleen bool long_desc, bool details_flag) 1388dc098b35SAndi Kleen { 1389dc098b35SAndi Kleen struct perf_pmu *pmu; 1390dc098b35SAndi Kleen struct perf_pmu_alias *alias; 1391dc098b35SAndi Kleen char buf[1024]; 1392dc098b35SAndi Kleen int printed = 0; 1393dc098b35SAndi Kleen int len, j; 1394dd5f1036SAndi Kleen struct sevent *aliases; 139508e60ed1SAndi Kleen int numdesc = 0; 139661eb2eb4SAndi Kleen int columns = pager_get_columns(); 1397dd5f1036SAndi Kleen char *topic = NULL; 1398dc098b35SAndi Kleen 1399dc098b35SAndi Kleen pmu = NULL; 1400dc098b35SAndi Kleen len = 0; 140142634bc7SAdrian Hunter while ((pmu = perf_pmu__scan(pmu)) != NULL) { 1402dc098b35SAndi Kleen list_for_each_entry(alias, &pmu->aliases, list) 1403dc098b35SAndi Kleen len++; 140442634bc7SAdrian Hunter if (pmu->selectable) 140542634bc7SAdrian Hunter len++; 140642634bc7SAdrian Hunter } 1407dd5f1036SAndi Kleen aliases = zalloc(sizeof(struct sevent) * len); 1408dc098b35SAndi Kleen if (!aliases) 14097e4772dcSArnaldo Carvalho de Melo goto out_enomem; 1410dc098b35SAndi Kleen pmu = NULL; 1411dc098b35SAndi Kleen j = 0; 141242634bc7SAdrian Hunter while ((pmu = perf_pmu__scan(pmu)) != NULL) { 1413dc098b35SAndi Kleen list_for_each_entry(alias, &pmu->aliases, list) { 141408e60ed1SAndi Kleen char *name = alias->desc ? alias->name : 141508e60ed1SAndi Kleen format_alias(buf, sizeof(buf), pmu, alias); 1416dc098b35SAndi Kleen bool is_cpu = !strcmp(pmu->name, "cpu"); 1417dc098b35SAndi Kleen 1418dc098b35SAndi Kleen if (event_glob != NULL && 141938d14f0cSAndi Kleen !(strglobmatch_nocase(name, event_glob) || 142038d14f0cSAndi Kleen (!is_cpu && strglobmatch_nocase(alias->name, 142167bdc35fSAndi Kleen event_glob)) || 142267bdc35fSAndi Kleen (alias->topic && 142367bdc35fSAndi Kleen strglobmatch_nocase(alias->topic, event_glob)))) 1424dc098b35SAndi Kleen continue; 14257e4772dcSArnaldo Carvalho de Melo 142608e60ed1SAndi Kleen if (is_cpu && !name_only && !alias->desc) 14277e4772dcSArnaldo Carvalho de Melo name = format_alias_or(buf, sizeof(buf), pmu, alias); 14287e4772dcSArnaldo Carvalho de Melo 142908e60ed1SAndi Kleen aliases[j].name = name; 143008e60ed1SAndi Kleen if (is_cpu && !name_only && !alias->desc) 143108e60ed1SAndi Kleen aliases[j].name = format_alias_or(buf, 143208e60ed1SAndi Kleen sizeof(buf), 143308e60ed1SAndi Kleen pmu, alias); 143408e60ed1SAndi Kleen aliases[j].name = strdup(aliases[j].name); 143508e60ed1SAndi Kleen if (!aliases[j].name) 14367e4772dcSArnaldo Carvalho de Melo goto out_enomem; 143708e60ed1SAndi Kleen 1438c8d6828aSSukadev Bhattiprolu aliases[j].desc = long_desc ? alias->long_desc : 1439c8d6828aSSukadev Bhattiprolu alias->desc; 1440dd5f1036SAndi Kleen aliases[j].topic = alias->topic; 1441f2361024SAndi Kleen aliases[j].str = alias->str; 1442f2361024SAndi Kleen aliases[j].pmu = pmu->name; 14437f372a63SAndi Kleen aliases[j].metric_expr = alias->metric_expr; 144496284814SAndi Kleen aliases[j].metric_name = alias->metric_name; 1445dc098b35SAndi Kleen j++; 1446dc098b35SAndi Kleen } 1447fa52ceabSArnaldo Carvalho de Melo if (pmu->selectable && 1448fa52ceabSArnaldo Carvalho de Melo (event_glob == NULL || strglobmatch(pmu->name, event_glob))) { 14497e4772dcSArnaldo Carvalho de Melo char *s; 14507e4772dcSArnaldo Carvalho de Melo if (asprintf(&s, "%s//", pmu->name) < 0) 14517e4772dcSArnaldo Carvalho de Melo goto out_enomem; 145208e60ed1SAndi Kleen aliases[j].name = s; 145342634bc7SAdrian Hunter j++; 145442634bc7SAdrian Hunter } 145542634bc7SAdrian Hunter } 1456dc098b35SAndi Kleen len = j; 1457dd5f1036SAndi Kleen qsort(aliases, len, sizeof(struct sevent), cmp_sevent); 1458dc098b35SAndi Kleen for (j = 0; j < len; j++) { 145915b22ed3SAndi Kleen /* Skip duplicates */ 146015b22ed3SAndi Kleen if (j > 0 && !strcmp(aliases[j].name, aliases[j - 1].name)) 146115b22ed3SAndi Kleen continue; 1462dc098b35SAndi Kleen if (name_only) { 146308e60ed1SAndi Kleen printf("%s ", aliases[j].name); 1464dc098b35SAndi Kleen continue; 1465dc098b35SAndi Kleen } 14661c5f01feSAndi Kleen if (aliases[j].desc && !quiet_flag) { 146708e60ed1SAndi Kleen if (numdesc++ == 0) 146808e60ed1SAndi Kleen printf("\n"); 1469dd5f1036SAndi Kleen if (aliases[j].topic && (!topic || 1470dd5f1036SAndi Kleen strcmp(topic, aliases[j].topic))) { 1471dd5f1036SAndi Kleen printf("%s%s:\n", topic ? "\n" : "", 1472dd5f1036SAndi Kleen aliases[j].topic); 1473dd5f1036SAndi Kleen topic = aliases[j].topic; 1474dd5f1036SAndi Kleen } 147508e60ed1SAndi Kleen printf(" %-50s\n", aliases[j].name); 147608e60ed1SAndi Kleen printf("%*s", 8, "["); 147708e60ed1SAndi Kleen wordwrap(aliases[j].desc, 8, columns, 0); 147808e60ed1SAndi Kleen printf("]\n"); 1479bf874fcfSAndi Kleen if (details_flag) { 14807f372a63SAndi Kleen printf("%*s%s/%s/ ", 8, "", aliases[j].pmu, aliases[j].str); 148196284814SAndi Kleen if (aliases[j].metric_name) 148296284814SAndi Kleen printf(" MetricName: %s", aliases[j].metric_name); 14837f372a63SAndi Kleen if (aliases[j].metric_expr) 14847f372a63SAndi Kleen printf(" MetricExpr: %s", aliases[j].metric_expr); 14857f372a63SAndi Kleen putchar('\n'); 14867f372a63SAndi Kleen } 148708e60ed1SAndi Kleen } else 148808e60ed1SAndi Kleen printf(" %-50s [Kernel PMU event]\n", aliases[j].name); 1489dc098b35SAndi Kleen printed++; 1490dc098b35SAndi Kleen } 1491dfc431cbSArnaldo Carvalho de Melo if (printed && pager_in_use()) 1492dc098b35SAndi Kleen printf("\n"); 14937e4772dcSArnaldo Carvalho de Melo out_free: 14947e4772dcSArnaldo Carvalho de Melo for (j = 0; j < len; j++) 149508e60ed1SAndi Kleen zfree(&aliases[j].name); 14967e4772dcSArnaldo Carvalho de Melo zfree(&aliases); 14977e4772dcSArnaldo Carvalho de Melo return; 14987e4772dcSArnaldo Carvalho de Melo 14997e4772dcSArnaldo Carvalho de Melo out_enomem: 15007e4772dcSArnaldo Carvalho de Melo printf("FATAL: not enough memory to print PMU events\n"); 15017e4772dcSArnaldo Carvalho de Melo if (aliases) 15027e4772dcSArnaldo Carvalho de Melo goto out_free; 1503dc098b35SAndi Kleen } 15044cabc3d1SAndi Kleen 15054cabc3d1SAndi Kleen bool pmu_have_event(const char *pname, const char *name) 15064cabc3d1SAndi Kleen { 15074cabc3d1SAndi Kleen struct perf_pmu *pmu; 15084cabc3d1SAndi Kleen struct perf_pmu_alias *alias; 15094cabc3d1SAndi Kleen 15104cabc3d1SAndi Kleen pmu = NULL; 15114cabc3d1SAndi Kleen while ((pmu = perf_pmu__scan(pmu)) != NULL) { 15124cabc3d1SAndi Kleen if (strcmp(pname, pmu->name)) 15134cabc3d1SAndi Kleen continue; 15144cabc3d1SAndi Kleen list_for_each_entry(alias, &pmu->aliases, list) 15154cabc3d1SAndi Kleen if (!strcmp(alias->name, name)) 15164cabc3d1SAndi Kleen return true; 15174cabc3d1SAndi Kleen } 15184cabc3d1SAndi Kleen return false; 15194cabc3d1SAndi Kleen } 15207d4bdab5SAdrian Hunter 15217d4bdab5SAdrian Hunter static FILE *perf_pmu__open_file(struct perf_pmu *pmu, const char *name) 15227d4bdab5SAdrian Hunter { 15237d4bdab5SAdrian Hunter struct stat st; 15247d4bdab5SAdrian Hunter char path[PATH_MAX]; 15257d4bdab5SAdrian Hunter const char *sysfs; 15267d4bdab5SAdrian Hunter 15277d4bdab5SAdrian Hunter sysfs = sysfs__mountpoint(); 15287d4bdab5SAdrian Hunter if (!sysfs) 15297d4bdab5SAdrian Hunter return NULL; 15307d4bdab5SAdrian Hunter 15317d4bdab5SAdrian Hunter snprintf(path, PATH_MAX, 15327d4bdab5SAdrian Hunter "%s" EVENT_SOURCE_DEVICE_PATH "%s/%s", sysfs, pmu->name, name); 15337d4bdab5SAdrian Hunter 15347d4bdab5SAdrian Hunter if (stat(path, &st) < 0) 15357d4bdab5SAdrian Hunter return NULL; 15367d4bdab5SAdrian Hunter 15377d4bdab5SAdrian Hunter return fopen(path, "r"); 15387d4bdab5SAdrian Hunter } 15397d4bdab5SAdrian Hunter 15407d4bdab5SAdrian Hunter int perf_pmu__scan_file(struct perf_pmu *pmu, const char *name, const char *fmt, 15417d4bdab5SAdrian Hunter ...) 15427d4bdab5SAdrian Hunter { 15437d4bdab5SAdrian Hunter va_list args; 15447d4bdab5SAdrian Hunter FILE *file; 15457d4bdab5SAdrian Hunter int ret = EOF; 15467d4bdab5SAdrian Hunter 15477d4bdab5SAdrian Hunter va_start(args, fmt); 15487d4bdab5SAdrian Hunter file = perf_pmu__open_file(pmu, name); 15497d4bdab5SAdrian Hunter if (file) { 15507d4bdab5SAdrian Hunter ret = vfscanf(file, fmt, args); 15517d4bdab5SAdrian Hunter fclose(file); 15527d4bdab5SAdrian Hunter } 15537d4bdab5SAdrian Hunter va_end(args); 15547d4bdab5SAdrian Hunter return ret; 15557d4bdab5SAdrian Hunter } 1556