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> 5cd82a32eSJiri Olsa #include <sys/types.h> 6a43783aeSArnaldo Carvalho de Melo #include <errno.h> 7c23c2a0fSArnaldo Carvalho de Melo #include <fcntl.h> 87a8ef4c4SArnaldo Carvalho de Melo #include <sys/stat.h> 9cd82a32eSJiri Olsa #include <unistd.h> 10cd82a32eSJiri Olsa #include <stdio.h> 11dc0a6202SAdrian Hunter #include <stdbool.h> 127d4bdab5SAdrian Hunter #include <stdarg.h> 13cd82a32eSJiri Olsa #include <dirent.h> 14cd0cfad7SBorislav Petkov #include <api/fs/fs.h> 15410136f5SStephane Eranian #include <locale.h> 16fbc2844eSWilliam Cohen #include <regex.h> 17cd82a32eSJiri Olsa #include "util.h" 18cd82a32eSJiri Olsa #include "pmu.h" 19cd82a32eSJiri Olsa #include "parse-events.h" 207ae92e74SYan, Zheng #include "cpumap.h" 21933f82ffSSukadev Bhattiprolu #include "header.h" 22933f82ffSSukadev Bhattiprolu #include "pmu-events/pmu-events.h" 2361eb2eb4SAndi Kleen #include "cache.h" 24a067558eSArnaldo Carvalho de Melo #include "string2.h" 25cd82a32eSJiri Olsa 26ab1bf653SArnaldo Carvalho de Melo struct perf_pmu_format { 27ab1bf653SArnaldo Carvalho de Melo char *name; 28ab1bf653SArnaldo Carvalho de Melo int value; 29ab1bf653SArnaldo Carvalho de Melo DECLARE_BITMAP(bits, PERF_PMU_FORMAT_BITS); 30ab1bf653SArnaldo Carvalho de Melo struct list_head list; 31ab1bf653SArnaldo Carvalho de Melo }; 32ab1bf653SArnaldo Carvalho de Melo 33cd82a32eSJiri Olsa int perf_pmu_parse(struct list_head *list, char *name); 34cd82a32eSJiri Olsa extern FILE *perf_pmu_in; 35cd82a32eSJiri Olsa 36cd82a32eSJiri Olsa static LIST_HEAD(pmus); 37cd82a32eSJiri Olsa 38cd82a32eSJiri Olsa /* 39cd82a32eSJiri Olsa * Parse & process all the sysfs attributes located under 40cd82a32eSJiri Olsa * the directory specified in 'dir' parameter. 41cd82a32eSJiri Olsa */ 42cff7f956SJiri Olsa int perf_pmu__format_parse(char *dir, struct list_head *head) 43cd82a32eSJiri Olsa { 44cd82a32eSJiri Olsa struct dirent *evt_ent; 45cd82a32eSJiri Olsa DIR *format_dir; 46cd82a32eSJiri Olsa int ret = 0; 47cd82a32eSJiri Olsa 48cd82a32eSJiri Olsa format_dir = opendir(dir); 49cd82a32eSJiri Olsa if (!format_dir) 50cd82a32eSJiri Olsa return -EINVAL; 51cd82a32eSJiri Olsa 52cd82a32eSJiri Olsa while (!ret && (evt_ent = readdir(format_dir))) { 53cd82a32eSJiri Olsa char path[PATH_MAX]; 54cd82a32eSJiri Olsa char *name = evt_ent->d_name; 55cd82a32eSJiri Olsa FILE *file; 56cd82a32eSJiri Olsa 57cd82a32eSJiri Olsa if (!strcmp(name, ".") || !strcmp(name, "..")) 58cd82a32eSJiri Olsa continue; 59cd82a32eSJiri Olsa 60cd82a32eSJiri Olsa snprintf(path, PATH_MAX, "%s/%s", dir, name); 61cd82a32eSJiri Olsa 62cd82a32eSJiri Olsa ret = -EINVAL; 63cd82a32eSJiri Olsa file = fopen(path, "r"); 64cd82a32eSJiri Olsa if (!file) 65cd82a32eSJiri Olsa break; 66cd82a32eSJiri Olsa 67cd82a32eSJiri Olsa perf_pmu_in = file; 68cd82a32eSJiri Olsa ret = perf_pmu_parse(head, name); 69cd82a32eSJiri Olsa fclose(file); 70cd82a32eSJiri Olsa } 71cd82a32eSJiri Olsa 72cd82a32eSJiri Olsa closedir(format_dir); 73cd82a32eSJiri Olsa return ret; 74cd82a32eSJiri Olsa } 75cd82a32eSJiri Olsa 76cd82a32eSJiri Olsa /* 77cd82a32eSJiri Olsa * Reading/parsing the default pmu format definition, which should be 78cd82a32eSJiri Olsa * located at: 79cd82a32eSJiri Olsa * /sys/bus/event_source/devices/<dev>/format as sysfs group attributes. 80cd82a32eSJiri Olsa */ 81b6b96fb4SAdrian Hunter static int pmu_format(const char *name, struct list_head *format) 82cd82a32eSJiri Olsa { 83cd82a32eSJiri Olsa struct stat st; 84cd82a32eSJiri Olsa char path[PATH_MAX]; 85cf38fadaSArnaldo Carvalho de Melo const char *sysfs = sysfs__mountpoint(); 86cd82a32eSJiri Olsa 87cd82a32eSJiri Olsa if (!sysfs) 88cd82a32eSJiri Olsa return -1; 89cd82a32eSJiri Olsa 90cd82a32eSJiri Olsa snprintf(path, PATH_MAX, 9150a9667cSRobert Richter "%s" EVENT_SOURCE_DEVICE_PATH "%s/format", sysfs, name); 92cd82a32eSJiri Olsa 93cd82a32eSJiri Olsa if (stat(path, &st) < 0) 949bc8f9feSRobert Richter return 0; /* no error if format does not exist */ 95cd82a32eSJiri Olsa 96cff7f956SJiri Olsa if (perf_pmu__format_parse(path, format)) 97cd82a32eSJiri Olsa return -1; 98cd82a32eSJiri Olsa 99cd82a32eSJiri Olsa return 0; 100cd82a32eSJiri Olsa } 101cd82a32eSJiri Olsa 102d02fc6bcSAndi Kleen static int convert_scale(const char *scale, char **end, double *sval) 103d02fc6bcSAndi Kleen { 104d02fc6bcSAndi Kleen char *lc; 105d02fc6bcSAndi Kleen int ret = 0; 106d02fc6bcSAndi Kleen 107d02fc6bcSAndi Kleen /* 108d02fc6bcSAndi Kleen * save current locale 109d02fc6bcSAndi Kleen */ 110d02fc6bcSAndi Kleen lc = setlocale(LC_NUMERIC, NULL); 111d02fc6bcSAndi Kleen 112d02fc6bcSAndi Kleen /* 113d02fc6bcSAndi Kleen * The lc string may be allocated in static storage, 114d02fc6bcSAndi Kleen * so get a dynamic copy to make it survive setlocale 115d02fc6bcSAndi Kleen * call below. 116d02fc6bcSAndi Kleen */ 117d02fc6bcSAndi Kleen lc = strdup(lc); 118d02fc6bcSAndi Kleen if (!lc) { 119d02fc6bcSAndi Kleen ret = -ENOMEM; 120d02fc6bcSAndi Kleen goto out; 121d02fc6bcSAndi Kleen } 122d02fc6bcSAndi Kleen 123d02fc6bcSAndi Kleen /* 124d02fc6bcSAndi Kleen * force to C locale to ensure kernel 125d02fc6bcSAndi Kleen * scale string is converted correctly. 126d02fc6bcSAndi Kleen * kernel uses default C locale. 127d02fc6bcSAndi Kleen */ 128d02fc6bcSAndi Kleen setlocale(LC_NUMERIC, "C"); 129d02fc6bcSAndi Kleen 130d02fc6bcSAndi Kleen *sval = strtod(scale, end); 131d02fc6bcSAndi Kleen 132d02fc6bcSAndi Kleen out: 133d02fc6bcSAndi Kleen /* restore locale */ 134d02fc6bcSAndi Kleen setlocale(LC_NUMERIC, lc); 135d02fc6bcSAndi Kleen free(lc); 136d02fc6bcSAndi Kleen return ret; 137d02fc6bcSAndi Kleen } 138d02fc6bcSAndi Kleen 139410136f5SStephane Eranian static int perf_pmu__parse_scale(struct perf_pmu_alias *alias, char *dir, char *name) 140410136f5SStephane Eranian { 141410136f5SStephane Eranian struct stat st; 142410136f5SStephane Eranian ssize_t sret; 143410136f5SStephane Eranian char scale[128]; 144410136f5SStephane Eranian int fd, ret = -1; 145410136f5SStephane Eranian char path[PATH_MAX]; 146410136f5SStephane Eranian 14711a64a05SBen Hutchings scnprintf(path, PATH_MAX, "%s/%s.scale", dir, name); 148410136f5SStephane Eranian 149410136f5SStephane Eranian fd = open(path, O_RDONLY); 150410136f5SStephane Eranian if (fd == -1) 151410136f5SStephane Eranian return -1; 152410136f5SStephane Eranian 153410136f5SStephane Eranian if (fstat(fd, &st) < 0) 154410136f5SStephane Eranian goto error; 155410136f5SStephane Eranian 156410136f5SStephane Eranian sret = read(fd, scale, sizeof(scale)-1); 157410136f5SStephane Eranian if (sret < 0) 158410136f5SStephane Eranian goto error; 159410136f5SStephane Eranian 1609ecae065SMadhavan Srinivasan if (scale[sret - 1] == '\n') 1619ecae065SMadhavan Srinivasan scale[sret - 1] = '\0'; 1629ecae065SMadhavan Srinivasan else 163410136f5SStephane Eranian scale[sret] = '\0'; 1649ecae065SMadhavan Srinivasan 165d02fc6bcSAndi Kleen ret = convert_scale(scale, NULL, &alias->scale); 166410136f5SStephane Eranian error: 167410136f5SStephane Eranian close(fd); 168410136f5SStephane Eranian return ret; 169410136f5SStephane Eranian } 170410136f5SStephane Eranian 171410136f5SStephane Eranian static int perf_pmu__parse_unit(struct perf_pmu_alias *alias, char *dir, char *name) 172410136f5SStephane Eranian { 173410136f5SStephane Eranian char path[PATH_MAX]; 174410136f5SStephane Eranian ssize_t sret; 175410136f5SStephane Eranian int fd; 176410136f5SStephane Eranian 17711a64a05SBen Hutchings scnprintf(path, PATH_MAX, "%s/%s.unit", dir, name); 178410136f5SStephane Eranian 179410136f5SStephane Eranian fd = open(path, O_RDONLY); 180410136f5SStephane Eranian if (fd == -1) 181410136f5SStephane Eranian return -1; 182410136f5SStephane Eranian 183410136f5SStephane Eranian sret = read(fd, alias->unit, UNIT_MAX_LEN); 184410136f5SStephane Eranian if (sret < 0) 185410136f5SStephane Eranian goto error; 186410136f5SStephane Eranian 187410136f5SStephane Eranian close(fd); 188410136f5SStephane Eranian 1899ecae065SMadhavan Srinivasan if (alias->unit[sret - 1] == '\n') 1909ecae065SMadhavan Srinivasan alias->unit[sret - 1] = '\0'; 1919ecae065SMadhavan Srinivasan else 192410136f5SStephane Eranian alias->unit[sret] = '\0'; 193410136f5SStephane Eranian 194410136f5SStephane Eranian return 0; 195410136f5SStephane Eranian error: 196410136f5SStephane Eranian close(fd); 197410136f5SStephane Eranian alias->unit[0] = '\0'; 198410136f5SStephane Eranian return -1; 199410136f5SStephane Eranian } 200410136f5SStephane Eranian 201044330c1SMatt Fleming static int 202044330c1SMatt Fleming perf_pmu__parse_per_pkg(struct perf_pmu_alias *alias, char *dir, char *name) 203044330c1SMatt Fleming { 204044330c1SMatt Fleming char path[PATH_MAX]; 205044330c1SMatt Fleming int fd; 206044330c1SMatt Fleming 20711a64a05SBen Hutchings scnprintf(path, PATH_MAX, "%s/%s.per-pkg", dir, name); 208044330c1SMatt Fleming 209044330c1SMatt Fleming fd = open(path, O_RDONLY); 210044330c1SMatt Fleming if (fd == -1) 211044330c1SMatt Fleming return -1; 212044330c1SMatt Fleming 213044330c1SMatt Fleming close(fd); 214044330c1SMatt Fleming 215044330c1SMatt Fleming alias->per_pkg = true; 216044330c1SMatt Fleming return 0; 217044330c1SMatt Fleming } 218044330c1SMatt Fleming 2191d9e446bSJiri Olsa static int perf_pmu__parse_snapshot(struct perf_pmu_alias *alias, 2201d9e446bSJiri Olsa char *dir, char *name) 2211d9e446bSJiri Olsa { 2221d9e446bSJiri Olsa char path[PATH_MAX]; 2231d9e446bSJiri Olsa int fd; 2241d9e446bSJiri Olsa 22511a64a05SBen Hutchings scnprintf(path, PATH_MAX, "%s/%s.snapshot", dir, name); 2261d9e446bSJiri Olsa 2271d9e446bSJiri Olsa fd = open(path, O_RDONLY); 2281d9e446bSJiri Olsa if (fd == -1) 2291d9e446bSJiri Olsa return -1; 2301d9e446bSJiri Olsa 2311d9e446bSJiri Olsa alias->snapshot = true; 2321d9e446bSJiri Olsa close(fd); 2331d9e446bSJiri Olsa return 0; 2341d9e446bSJiri Olsa } 2351d9e446bSJiri Olsa 2366dde6429SThomas Richter static void perf_pmu_assign_str(char *name, const char *field, char **old_str, 2376dde6429SThomas Richter char **new_str) 2386dde6429SThomas Richter { 2396dde6429SThomas Richter if (!*old_str) 2406dde6429SThomas Richter goto set_new; 2416dde6429SThomas Richter 2426dde6429SThomas Richter if (*new_str) { /* Have new string, check with old */ 2436dde6429SThomas Richter if (strcasecmp(*old_str, *new_str)) 2446dde6429SThomas Richter pr_debug("alias %s differs in field '%s'\n", 2456dde6429SThomas Richter name, field); 2466dde6429SThomas Richter zfree(old_str); 2476dde6429SThomas Richter } else /* Nothing new --> keep old string */ 2486dde6429SThomas Richter return; 2496dde6429SThomas Richter set_new: 2506dde6429SThomas Richter *old_str = *new_str; 2516dde6429SThomas Richter *new_str = NULL; 2526dde6429SThomas Richter } 2536dde6429SThomas Richter 2546dde6429SThomas Richter static void perf_pmu_update_alias(struct perf_pmu_alias *old, 2556dde6429SThomas Richter struct perf_pmu_alias *newalias) 2566dde6429SThomas Richter { 2576dde6429SThomas Richter perf_pmu_assign_str(old->name, "desc", &old->desc, &newalias->desc); 2586dde6429SThomas Richter perf_pmu_assign_str(old->name, "long_desc", &old->long_desc, 2596dde6429SThomas Richter &newalias->long_desc); 2606dde6429SThomas Richter perf_pmu_assign_str(old->name, "topic", &old->topic, &newalias->topic); 2616dde6429SThomas Richter perf_pmu_assign_str(old->name, "metric_expr", &old->metric_expr, 2626dde6429SThomas Richter &newalias->metric_expr); 2636dde6429SThomas Richter perf_pmu_assign_str(old->name, "metric_name", &old->metric_name, 2646dde6429SThomas Richter &newalias->metric_name); 2656dde6429SThomas Richter perf_pmu_assign_str(old->name, "value", &old->str, &newalias->str); 2666dde6429SThomas Richter old->scale = newalias->scale; 2676dde6429SThomas Richter old->per_pkg = newalias->per_pkg; 2686dde6429SThomas Richter old->snapshot = newalias->snapshot; 2696dde6429SThomas Richter memcpy(old->unit, newalias->unit, sizeof(old->unit)); 2706dde6429SThomas Richter } 2716dde6429SThomas Richter 2726dde6429SThomas Richter /* Delete an alias entry. */ 2736dde6429SThomas Richter static void perf_pmu_free_alias(struct perf_pmu_alias *newalias) 2746dde6429SThomas Richter { 2756dde6429SThomas Richter zfree(&newalias->name); 2766dde6429SThomas Richter zfree(&newalias->desc); 2776dde6429SThomas Richter zfree(&newalias->long_desc); 2786dde6429SThomas Richter zfree(&newalias->topic); 2796dde6429SThomas Richter zfree(&newalias->str); 2806dde6429SThomas Richter zfree(&newalias->metric_expr); 2816dde6429SThomas Richter zfree(&newalias->metric_name); 2826dde6429SThomas Richter parse_events_terms__purge(&newalias->terms); 2836dde6429SThomas Richter free(newalias); 2846dde6429SThomas Richter } 2856dde6429SThomas Richter 2866dde6429SThomas Richter /* Merge an alias, search in alias list. If this name is already 2876dde6429SThomas Richter * present merge both of them to combine all information. 2886dde6429SThomas Richter */ 2896dde6429SThomas Richter static bool perf_pmu_merge_alias(struct perf_pmu_alias *newalias, 2906dde6429SThomas Richter struct list_head *alist) 2916dde6429SThomas Richter { 2926dde6429SThomas Richter struct perf_pmu_alias *a; 2936dde6429SThomas Richter 2946dde6429SThomas Richter list_for_each_entry(a, alist, list) { 2956dde6429SThomas Richter if (!strcasecmp(newalias->name, a->name)) { 2966dde6429SThomas Richter perf_pmu_update_alias(a, newalias); 2976dde6429SThomas Richter perf_pmu_free_alias(newalias); 2986dde6429SThomas Richter return true; 2996dde6429SThomas Richter } 3006dde6429SThomas Richter } 3016dde6429SThomas Richter return false; 3026dde6429SThomas Richter } 3036dde6429SThomas Richter 30470c646e0SSukadev Bhattiprolu static int __perf_pmu__new_alias(struct list_head *list, char *dir, char *name, 305fedb2b51SAndi Kleen char *desc, char *val, 306fedb2b51SAndi Kleen char *long_desc, char *topic, 30700636c3bSAndi Kleen char *unit, char *perpkg, 30896284814SAndi Kleen char *metric_expr, 30996284814SAndi Kleen char *metric_name) 310a6146d50SZheng Yan { 3110c24d6fbSThomas Richter struct parse_events_term *term; 3125c6ccc37SArnaldo Carvalho de Melo struct perf_pmu_alias *alias; 313a6146d50SZheng Yan int ret; 314fedb2b51SAndi Kleen int num; 3150c24d6fbSThomas Richter char newval[256]; 316a6146d50SZheng Yan 317a6146d50SZheng Yan alias = malloc(sizeof(*alias)); 318a6146d50SZheng Yan if (!alias) 319a6146d50SZheng Yan return -ENOMEM; 320a6146d50SZheng Yan 321a6146d50SZheng Yan INIT_LIST_HEAD(&alias->terms); 322410136f5SStephane Eranian alias->scale = 1.0; 323410136f5SStephane Eranian alias->unit[0] = '\0'; 324044330c1SMatt Fleming alias->per_pkg = false; 32584530920SStephane Eranian alias->snapshot = false; 326410136f5SStephane Eranian 32770c646e0SSukadev Bhattiprolu ret = parse_events_terms(&alias->terms, val); 328a6146d50SZheng Yan if (ret) { 32970c646e0SSukadev Bhattiprolu pr_err("Cannot parse alias %s: %d\n", val, ret); 330a6146d50SZheng Yan free(alias); 331a6146d50SZheng Yan return ret; 332a6146d50SZheng Yan } 333a6146d50SZheng Yan 3340c24d6fbSThomas Richter /* Scan event and remove leading zeroes, spaces, newlines, some 3350c24d6fbSThomas Richter * platforms have terms specified as 3360c24d6fbSThomas Richter * event=0x0091 (read from files ../<PMU>/events/<FILE> 3370c24d6fbSThomas Richter * and terms specified as event=0x91 (read from JSON files). 3380c24d6fbSThomas Richter * 3390c24d6fbSThomas Richter * Rebuild string to make alias->str member comparable. 3400c24d6fbSThomas Richter */ 3410c24d6fbSThomas Richter memset(newval, 0, sizeof(newval)); 3420c24d6fbSThomas Richter ret = 0; 3430c24d6fbSThomas Richter list_for_each_entry(term, &alias->terms, list) { 3440c24d6fbSThomas Richter if (ret) 3450c24d6fbSThomas Richter ret += scnprintf(newval + ret, sizeof(newval) - ret, 3460c24d6fbSThomas Richter ","); 3470c24d6fbSThomas Richter if (term->type_val == PARSE_EVENTS__TERM_TYPE_NUM) 3480c24d6fbSThomas Richter ret += scnprintf(newval + ret, sizeof(newval) - ret, 3490c24d6fbSThomas Richter "%s=%#x", term->config, term->val.num); 3500c24d6fbSThomas Richter else if (term->type_val == PARSE_EVENTS__TERM_TYPE_STR) 3510c24d6fbSThomas Richter ret += scnprintf(newval + ret, sizeof(newval) - ret, 3520c24d6fbSThomas Richter "%s=%s", term->config, term->val.str); 3530c24d6fbSThomas Richter } 3540c24d6fbSThomas Richter 355a6146d50SZheng Yan alias->name = strdup(name); 35670c646e0SSukadev Bhattiprolu if (dir) { 357410136f5SStephane Eranian /* 358410136f5SStephane Eranian * load unit name and scale if available 359410136f5SStephane Eranian */ 360410136f5SStephane Eranian perf_pmu__parse_unit(alias, dir, name); 361410136f5SStephane Eranian perf_pmu__parse_scale(alias, dir, name); 362044330c1SMatt Fleming perf_pmu__parse_per_pkg(alias, dir, name); 3631d9e446bSJiri Olsa perf_pmu__parse_snapshot(alias, dir, name); 36470c646e0SSukadev Bhattiprolu } 365410136f5SStephane Eranian 36600636c3bSAndi Kleen alias->metric_expr = metric_expr ? strdup(metric_expr) : NULL; 36796284814SAndi Kleen alias->metric_name = metric_name ? strdup(metric_name): NULL; 36808e60ed1SAndi Kleen alias->desc = desc ? strdup(desc) : NULL; 369c8d6828aSSukadev Bhattiprolu alias->long_desc = long_desc ? strdup(long_desc) : 370c8d6828aSSukadev Bhattiprolu desc ? strdup(desc) : NULL; 371dd5f1036SAndi Kleen alias->topic = topic ? strdup(topic) : NULL; 372fedb2b51SAndi Kleen if (unit) { 373fedb2b51SAndi Kleen if (convert_scale(unit, &unit, &alias->scale) < 0) 374fedb2b51SAndi Kleen return -1; 375fedb2b51SAndi Kleen snprintf(alias->unit, sizeof(alias->unit), "%s", unit); 376fedb2b51SAndi Kleen } 377fedb2b51SAndi Kleen alias->per_pkg = perpkg && sscanf(perpkg, "%d", &num) == 1 && num == 1; 3780c24d6fbSThomas Richter alias->str = strdup(newval); 379f2361024SAndi Kleen 3806dde6429SThomas Richter if (!perf_pmu_merge_alias(alias, list)) 381a6146d50SZheng Yan list_add_tail(&alias->list, list); 382410136f5SStephane Eranian 383a6146d50SZheng Yan return 0; 384a6146d50SZheng Yan } 385a6146d50SZheng Yan 38670c646e0SSukadev Bhattiprolu static int perf_pmu__new_alias(struct list_head *list, char *dir, char *name, FILE *file) 38770c646e0SSukadev Bhattiprolu { 38870c646e0SSukadev Bhattiprolu char buf[256]; 38970c646e0SSukadev Bhattiprolu int ret; 39070c646e0SSukadev Bhattiprolu 39170c646e0SSukadev Bhattiprolu ret = fread(buf, 1, sizeof(buf), file); 39270c646e0SSukadev Bhattiprolu if (ret == 0) 39370c646e0SSukadev Bhattiprolu return -EINVAL; 39470c646e0SSukadev Bhattiprolu 39570c646e0SSukadev Bhattiprolu buf[ret] = 0; 39670c646e0SSukadev Bhattiprolu 397ea23ac73SThomas Richter /* Remove trailing newline from sysfs file */ 39813c230abSArnaldo Carvalho de Melo strim(buf); 399ea23ac73SThomas Richter 400fedb2b51SAndi Kleen return __perf_pmu__new_alias(list, dir, name, NULL, buf, NULL, NULL, NULL, 40196284814SAndi Kleen NULL, NULL, NULL); 40270c646e0SSukadev Bhattiprolu } 40370c646e0SSukadev Bhattiprolu 40446441bdcSMatt Fleming static inline bool pmu_alias_info_file(char *name) 40546441bdcSMatt Fleming { 40646441bdcSMatt Fleming size_t len; 40746441bdcSMatt Fleming 40846441bdcSMatt Fleming len = strlen(name); 40946441bdcSMatt Fleming if (len > 5 && !strcmp(name + len - 5, ".unit")) 41046441bdcSMatt Fleming return true; 41146441bdcSMatt Fleming if (len > 6 && !strcmp(name + len - 6, ".scale")) 41246441bdcSMatt Fleming return true; 413044330c1SMatt Fleming if (len > 8 && !strcmp(name + len - 8, ".per-pkg")) 414044330c1SMatt Fleming return true; 4151d9e446bSJiri Olsa if (len > 9 && !strcmp(name + len - 9, ".snapshot")) 4161d9e446bSJiri Olsa return true; 41746441bdcSMatt Fleming 41846441bdcSMatt Fleming return false; 41946441bdcSMatt Fleming } 42046441bdcSMatt Fleming 421a6146d50SZheng Yan /* 422a6146d50SZheng Yan * Process all the sysfs attributes located under the directory 423a6146d50SZheng Yan * specified in 'dir' parameter. 424a6146d50SZheng Yan */ 425a6146d50SZheng Yan static int pmu_aliases_parse(char *dir, struct list_head *head) 426a6146d50SZheng Yan { 427a6146d50SZheng Yan struct dirent *evt_ent; 428a6146d50SZheng Yan DIR *event_dir; 429a6146d50SZheng Yan 430a6146d50SZheng Yan event_dir = opendir(dir); 431a6146d50SZheng Yan if (!event_dir) 432a6146d50SZheng Yan return -EINVAL; 433a6146d50SZheng Yan 434940db6dcSAndi Kleen while ((evt_ent = readdir(event_dir))) { 435a6146d50SZheng Yan char path[PATH_MAX]; 436a6146d50SZheng Yan char *name = evt_ent->d_name; 437a6146d50SZheng Yan FILE *file; 438a6146d50SZheng Yan 439a6146d50SZheng Yan if (!strcmp(name, ".") || !strcmp(name, "..")) 440a6146d50SZheng Yan continue; 441a6146d50SZheng Yan 442410136f5SStephane Eranian /* 44346441bdcSMatt Fleming * skip info files parsed in perf_pmu__new_alias() 444410136f5SStephane Eranian */ 44546441bdcSMatt Fleming if (pmu_alias_info_file(name)) 446410136f5SStephane Eranian continue; 447410136f5SStephane Eranian 44877f18153SJiri Olsa scnprintf(path, PATH_MAX, "%s/%s", dir, name); 449a6146d50SZheng Yan 450a6146d50SZheng Yan file = fopen(path, "r"); 451940db6dcSAndi Kleen if (!file) { 452940db6dcSAndi Kleen pr_debug("Cannot open %s\n", path); 453940db6dcSAndi Kleen continue; 454940db6dcSAndi Kleen } 455410136f5SStephane Eranian 456940db6dcSAndi Kleen if (perf_pmu__new_alias(head, dir, name, file) < 0) 457940db6dcSAndi Kleen pr_debug("Cannot set up %s\n", name); 458a6146d50SZheng Yan fclose(file); 459a6146d50SZheng Yan } 460a6146d50SZheng Yan 461a6146d50SZheng Yan closedir(event_dir); 462940db6dcSAndi Kleen return 0; 463a6146d50SZheng Yan } 464a6146d50SZheng Yan 465a6146d50SZheng Yan /* 466a6146d50SZheng Yan * Reading the pmu event aliases definition, which should be located at: 467a6146d50SZheng Yan * /sys/bus/event_source/devices/<dev>/events as sysfs group attributes. 468a6146d50SZheng Yan */ 469b6b96fb4SAdrian Hunter static int pmu_aliases(const char *name, struct list_head *head) 470a6146d50SZheng Yan { 471a6146d50SZheng Yan struct stat st; 472a6146d50SZheng Yan char path[PATH_MAX]; 473cf38fadaSArnaldo Carvalho de Melo const char *sysfs = sysfs__mountpoint(); 474a6146d50SZheng Yan 475a6146d50SZheng Yan if (!sysfs) 476a6146d50SZheng Yan return -1; 477a6146d50SZheng Yan 478a6146d50SZheng Yan snprintf(path, PATH_MAX, 479a6146d50SZheng Yan "%s/bus/event_source/devices/%s/events", sysfs, name); 480a6146d50SZheng Yan 481a6146d50SZheng Yan if (stat(path, &st) < 0) 4823fded963SJiri Olsa return 0; /* no error if 'events' does not exist */ 483a6146d50SZheng Yan 484a6146d50SZheng Yan if (pmu_aliases_parse(path, head)) 485a6146d50SZheng Yan return -1; 486a6146d50SZheng Yan 487a6146d50SZheng Yan return 0; 488a6146d50SZheng Yan } 489a6146d50SZheng Yan 4905c6ccc37SArnaldo Carvalho de Melo static int pmu_alias_terms(struct perf_pmu_alias *alias, 491a6146d50SZheng Yan struct list_head *terms) 492a6146d50SZheng Yan { 4937c2f8164SJiri Olsa struct parse_events_term *term, *cloned; 494a6146d50SZheng Yan LIST_HEAD(list); 495a6146d50SZheng Yan int ret; 496a6146d50SZheng Yan 497a6146d50SZheng Yan list_for_each_entry(term, &alias->terms, list) { 4987c2f8164SJiri Olsa ret = parse_events_term__clone(&cloned, term); 499a6146d50SZheng Yan if (ret) { 500682dc24cSArnaldo Carvalho de Melo parse_events_terms__purge(&list); 501a6146d50SZheng Yan return ret; 502a6146d50SZheng Yan } 503c2f1ceadSAndi Kleen /* 504c2f1ceadSAndi Kleen * Weak terms don't override command line options, 505c2f1ceadSAndi Kleen * which we don't want for implicit terms in aliases. 506c2f1ceadSAndi Kleen */ 507c2f1ceadSAndi Kleen cloned->weak = true; 5087c2f8164SJiri Olsa list_add_tail(&cloned->list, &list); 509a6146d50SZheng Yan } 510a6146d50SZheng Yan list_splice(&list, terms); 511a6146d50SZheng Yan return 0; 512a6146d50SZheng Yan } 513a6146d50SZheng Yan 514cd82a32eSJiri Olsa /* 515cd82a32eSJiri Olsa * Reading/parsing the default pmu type value, which should be 516cd82a32eSJiri Olsa * located at: 517cd82a32eSJiri Olsa * /sys/bus/event_source/devices/<dev>/type as sysfs attribute. 518cd82a32eSJiri Olsa */ 519b6b96fb4SAdrian Hunter static int pmu_type(const char *name, __u32 *type) 520cd82a32eSJiri Olsa { 521cd82a32eSJiri Olsa struct stat st; 522cd82a32eSJiri Olsa char path[PATH_MAX]; 523cd82a32eSJiri Olsa FILE *file; 524cd82a32eSJiri Olsa int ret = 0; 525cf38fadaSArnaldo Carvalho de Melo const char *sysfs = sysfs__mountpoint(); 526cd82a32eSJiri Olsa 527cd82a32eSJiri Olsa if (!sysfs) 528cd82a32eSJiri Olsa return -1; 529cd82a32eSJiri Olsa 530cd82a32eSJiri Olsa snprintf(path, PATH_MAX, 53150a9667cSRobert Richter "%s" EVENT_SOURCE_DEVICE_PATH "%s/type", sysfs, name); 532cd82a32eSJiri Olsa 533cd82a32eSJiri Olsa if (stat(path, &st) < 0) 534cd82a32eSJiri Olsa return -1; 535cd82a32eSJiri Olsa 536cd82a32eSJiri Olsa file = fopen(path, "r"); 537cd82a32eSJiri Olsa if (!file) 538cd82a32eSJiri Olsa return -EINVAL; 539cd82a32eSJiri Olsa 540cd82a32eSJiri Olsa if (1 != fscanf(file, "%u", type)) 541cd82a32eSJiri Olsa ret = -1; 542cd82a32eSJiri Olsa 543cd82a32eSJiri Olsa fclose(file); 544cd82a32eSJiri Olsa return ret; 545cd82a32eSJiri Olsa } 546cd82a32eSJiri Olsa 54750a9667cSRobert Richter /* Add all pmus in sysfs to pmu list: */ 54850a9667cSRobert Richter static void pmu_read_sysfs(void) 54950a9667cSRobert Richter { 55050a9667cSRobert Richter char path[PATH_MAX]; 55150a9667cSRobert Richter DIR *dir; 55250a9667cSRobert Richter struct dirent *dent; 553cf38fadaSArnaldo Carvalho de Melo const char *sysfs = sysfs__mountpoint(); 55450a9667cSRobert Richter 55550a9667cSRobert Richter if (!sysfs) 55650a9667cSRobert Richter return; 55750a9667cSRobert Richter 55850a9667cSRobert Richter snprintf(path, PATH_MAX, 55950a9667cSRobert Richter "%s" EVENT_SOURCE_DEVICE_PATH, sysfs); 56050a9667cSRobert Richter 56150a9667cSRobert Richter dir = opendir(path); 56250a9667cSRobert Richter if (!dir) 56350a9667cSRobert Richter return; 56450a9667cSRobert Richter 56550a9667cSRobert Richter while ((dent = readdir(dir))) { 56650a9667cSRobert Richter if (!strcmp(dent->d_name, ".") || !strcmp(dent->d_name, "..")) 56750a9667cSRobert Richter continue; 56850a9667cSRobert Richter /* add to static LIST_HEAD(pmus): */ 56950a9667cSRobert Richter perf_pmu__find(dent->d_name); 57050a9667cSRobert Richter } 57150a9667cSRobert Richter 57250a9667cSRobert Richter closedir(dir); 57350a9667cSRobert Richter } 57450a9667cSRobert Richter 57566ec1191SMark Rutland static struct cpu_map *__pmu_cpumask(const char *path) 57666ec1191SMark Rutland { 57766ec1191SMark Rutland FILE *file; 57866ec1191SMark Rutland struct cpu_map *cpus; 57966ec1191SMark Rutland 58066ec1191SMark Rutland file = fopen(path, "r"); 58166ec1191SMark Rutland if (!file) 58266ec1191SMark Rutland return NULL; 58366ec1191SMark Rutland 58466ec1191SMark Rutland cpus = cpu_map__read(file); 58566ec1191SMark Rutland fclose(file); 58666ec1191SMark Rutland return cpus; 58766ec1191SMark Rutland } 58866ec1191SMark Rutland 58966ec1191SMark Rutland /* 59066ec1191SMark Rutland * Uncore PMUs have a "cpumask" file under sysfs. CPU PMUs (e.g. on arm/arm64) 59166ec1191SMark Rutland * may have a "cpus" file. 59266ec1191SMark Rutland */ 59366ec1191SMark Rutland #define CPUS_TEMPLATE_UNCORE "%s/bus/event_source/devices/%s/cpumask" 59466ec1191SMark Rutland #define CPUS_TEMPLATE_CPU "%s/bus/event_source/devices/%s/cpus" 59566ec1191SMark Rutland 596b6b96fb4SAdrian Hunter static struct cpu_map *pmu_cpumask(const char *name) 5977ae92e74SYan, Zheng { 5987ae92e74SYan, Zheng char path[PATH_MAX]; 5997ae92e74SYan, Zheng struct cpu_map *cpus; 600cf38fadaSArnaldo Carvalho de Melo const char *sysfs = sysfs__mountpoint(); 6017e3fcffeSMark Rutland const char *templates[] = { 60266ec1191SMark Rutland CPUS_TEMPLATE_UNCORE, 60366ec1191SMark Rutland CPUS_TEMPLATE_CPU, 6047e3fcffeSMark Rutland NULL 6057e3fcffeSMark Rutland }; 6067e3fcffeSMark Rutland const char **template; 6077ae92e74SYan, Zheng 6087ae92e74SYan, Zheng if (!sysfs) 6097ae92e74SYan, Zheng return NULL; 6107ae92e74SYan, Zheng 6117e3fcffeSMark Rutland for (template = templates; *template; template++) { 6127e3fcffeSMark Rutland snprintf(path, PATH_MAX, *template, sysfs, name); 61366ec1191SMark Rutland cpus = __pmu_cpumask(path); 61466ec1191SMark Rutland if (cpus) 61566ec1191SMark Rutland return cpus; 6167e3fcffeSMark Rutland } 6177ae92e74SYan, Zheng 6187ae92e74SYan, Zheng return NULL; 61966ec1191SMark Rutland } 6207ae92e74SYan, Zheng 62166ec1191SMark Rutland static bool pmu_is_uncore(const char *name) 62266ec1191SMark Rutland { 62366ec1191SMark Rutland char path[PATH_MAX]; 62466ec1191SMark Rutland struct cpu_map *cpus; 62566ec1191SMark Rutland const char *sysfs = sysfs__mountpoint(); 6267ae92e74SYan, Zheng 62766ec1191SMark Rutland snprintf(path, PATH_MAX, CPUS_TEMPLATE_UNCORE, sysfs, name); 62866ec1191SMark Rutland cpus = __pmu_cpumask(path); 62966ec1191SMark Rutland cpu_map__put(cpus); 63066ec1191SMark Rutland 63166ec1191SMark Rutland return !!cpus; 6327ae92e74SYan, Zheng } 6337ae92e74SYan, Zheng 634933f82ffSSukadev Bhattiprolu /* 63514b22ae0SGanapatrao Kulkarni * PMU CORE devices have different name other than cpu in sysfs on some 636292c34c1SKan Liang * platforms. 637292c34c1SKan Liang * Looking for possible sysfs files to identify the arm core device. 63814b22ae0SGanapatrao Kulkarni */ 639292c34c1SKan Liang static int is_arm_pmu_core(const char *name) 64014b22ae0SGanapatrao Kulkarni { 64114b22ae0SGanapatrao Kulkarni struct stat st; 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); 65114b22ae0SGanapatrao Kulkarni if (stat(path, &st) == 0) 65214b22ae0SGanapatrao Kulkarni return 1; 65314b22ae0SGanapatrao Kulkarni 65414b22ae0SGanapatrao Kulkarni return 0; 65514b22ae0SGanapatrao Kulkarni } 65614b22ae0SGanapatrao Kulkarni 65754e32dc0SGanapatrao Kulkarni static char *perf_pmu__getcpuid(struct perf_pmu *pmu) 658d77ade9fSAndi Kleen { 659d77ade9fSAndi Kleen char *cpuid; 660d77ade9fSAndi Kleen static bool printed; 661d77ade9fSAndi Kleen 662d77ade9fSAndi Kleen cpuid = getenv("PERF_CPUID"); 663d77ade9fSAndi Kleen if (cpuid) 664d77ade9fSAndi Kleen cpuid = strdup(cpuid); 665d77ade9fSAndi Kleen if (!cpuid) 66654e32dc0SGanapatrao Kulkarni cpuid = get_cpuid_str(pmu); 667d77ade9fSAndi Kleen if (!cpuid) 668d77ade9fSAndi Kleen return NULL; 669d77ade9fSAndi Kleen 670d77ade9fSAndi Kleen if (!printed) { 671d77ade9fSAndi Kleen pr_debug("Using CPUID %s\n", cpuid); 672d77ade9fSAndi Kleen printed = true; 673d77ade9fSAndi Kleen } 674d77ade9fSAndi Kleen return cpuid; 675d77ade9fSAndi Kleen } 676d77ade9fSAndi Kleen 67754e32dc0SGanapatrao Kulkarni struct pmu_events_map *perf_pmu__find_map(struct perf_pmu *pmu) 678d77ade9fSAndi Kleen { 679d77ade9fSAndi Kleen struct pmu_events_map *map; 68054e32dc0SGanapatrao Kulkarni char *cpuid = perf_pmu__getcpuid(pmu); 681d77ade9fSAndi Kleen int i; 682d77ade9fSAndi Kleen 683de3d0f12SGanapatrao Kulkarni /* on some platforms which uses cpus map, cpuid can be NULL for 684de3d0f12SGanapatrao Kulkarni * PMUs other than CORE PMUs. 685de3d0f12SGanapatrao Kulkarni */ 686de3d0f12SGanapatrao Kulkarni if (!cpuid) 687de3d0f12SGanapatrao Kulkarni return NULL; 688de3d0f12SGanapatrao Kulkarni 689d77ade9fSAndi Kleen i = 0; 690d77ade9fSAndi Kleen for (;;) { 691d77ade9fSAndi Kleen map = &pmu_events_map[i++]; 692d77ade9fSAndi Kleen if (!map->table) { 693d77ade9fSAndi Kleen map = NULL; 694d77ade9fSAndi Kleen break; 695d77ade9fSAndi Kleen } 696d77ade9fSAndi Kleen 6974cb7d3ecSThomas Richter if (!strcmp_cpuid_str(map->cpuid, cpuid)) 698d77ade9fSAndi Kleen break; 699d77ade9fSAndi Kleen } 700d77ade9fSAndi Kleen free(cpuid); 701d77ade9fSAndi Kleen return map; 702d77ade9fSAndi Kleen } 703d77ade9fSAndi Kleen 704933f82ffSSukadev Bhattiprolu /* 705933f82ffSSukadev Bhattiprolu * From the pmu_events_map, find the table of PMU events that corresponds 706933f82ffSSukadev Bhattiprolu * to the current running CPU. Then, add all PMU events from that table 707933f82ffSSukadev Bhattiprolu * as aliases. 708933f82ffSSukadev Bhattiprolu */ 70954e32dc0SGanapatrao Kulkarni static void pmu_add_cpu_aliases(struct list_head *head, struct perf_pmu *pmu) 710933f82ffSSukadev Bhattiprolu { 711933f82ffSSukadev Bhattiprolu int i; 712933f82ffSSukadev Bhattiprolu struct pmu_events_map *map; 71354e32dc0SGanapatrao Kulkarni const char *name = pmu->name; 714933f82ffSSukadev Bhattiprolu 71554e32dc0SGanapatrao Kulkarni map = perf_pmu__find_map(pmu); 716d77ade9fSAndi Kleen if (!map) 717933f82ffSSukadev Bhattiprolu return; 718933f82ffSSukadev Bhattiprolu 719933f82ffSSukadev Bhattiprolu /* 720933f82ffSSukadev Bhattiprolu * Found a matching PMU events table. Create aliases 721933f82ffSSukadev Bhattiprolu */ 722933f82ffSSukadev Bhattiprolu i = 0; 723933f82ffSSukadev Bhattiprolu while (1) { 724599ee18fSJohn Garry const char *cpu_name = is_arm_pmu_core(name) ? name : "cpu"; 725599ee18fSJohn Garry struct pmu_event *pe = &map->table[i++]; 726599ee18fSJohn Garry const char *pname = pe->pmu ? pe->pmu : cpu_name; 727fedb2b51SAndi Kleen 728b18f3e36SAndi Kleen if (!pe->name) { 729b18f3e36SAndi Kleen if (pe->metric_group || pe->metric_name) 730b18f3e36SAndi Kleen continue; 731933f82ffSSukadev Bhattiprolu break; 732b18f3e36SAndi Kleen } 733933f82ffSSukadev Bhattiprolu 734e94d6b7fSKan Liang /* 735e94d6b7fSKan Liang * uncore alias may be from different PMU 736e94d6b7fSKan Liang * with common prefix 737e94d6b7fSKan Liang */ 738e94d6b7fSKan Liang if (pmu_is_uncore(name) && 739e94d6b7fSKan Liang !strncmp(pname, name, strlen(pname))) 740e94d6b7fSKan Liang goto new_alias; 741e94d6b7fSKan Liang 742ea1fa48cSThomas Richter if (strcmp(pname, name)) 74314b22ae0SGanapatrao Kulkarni continue; 744fedb2b51SAndi Kleen 745e94d6b7fSKan Liang new_alias: 746933f82ffSSukadev Bhattiprolu /* need type casts to override 'const' */ 747933f82ffSSukadev Bhattiprolu __perf_pmu__new_alias(head, NULL, (char *)pe->name, 748c8d6828aSSukadev Bhattiprolu (char *)pe->desc, (char *)pe->event, 749fedb2b51SAndi Kleen (char *)pe->long_desc, (char *)pe->topic, 75000636c3bSAndi Kleen (char *)pe->unit, (char *)pe->perpkg, 75196284814SAndi Kleen (char *)pe->metric_expr, 75296284814SAndi Kleen (char *)pe->metric_name); 753933f82ffSSukadev Bhattiprolu } 754933f82ffSSukadev Bhattiprolu } 755933f82ffSSukadev Bhattiprolu 756c5de47f2SSukadev Bhattiprolu struct perf_event_attr * __weak 757dc0a6202SAdrian Hunter perf_pmu__get_default_config(struct perf_pmu *pmu __maybe_unused) 758dc0a6202SAdrian Hunter { 759dc0a6202SAdrian Hunter return NULL; 760dc0a6202SAdrian Hunter } 761dc0a6202SAdrian Hunter 76290a86bdeSJiri Olsa static int pmu_max_precise(const char *name) 76390a86bdeSJiri Olsa { 76490a86bdeSJiri Olsa char path[PATH_MAX]; 76590a86bdeSJiri Olsa int max_precise = -1; 76690a86bdeSJiri Olsa 76790a86bdeSJiri Olsa scnprintf(path, PATH_MAX, 76890a86bdeSJiri Olsa "bus/event_source/devices/%s/caps/max_precise", 76990a86bdeSJiri Olsa name); 77090a86bdeSJiri Olsa 77190a86bdeSJiri Olsa sysfs__read_int(path, &max_precise); 77290a86bdeSJiri Olsa return max_precise; 77390a86bdeSJiri Olsa } 77490a86bdeSJiri Olsa 775b6b96fb4SAdrian Hunter static struct perf_pmu *pmu_lookup(const char *name) 776cd82a32eSJiri Olsa { 777cd82a32eSJiri Olsa struct perf_pmu *pmu; 778cd82a32eSJiri Olsa LIST_HEAD(format); 779a6146d50SZheng Yan LIST_HEAD(aliases); 780cd82a32eSJiri Olsa __u32 type; 781cd82a32eSJiri Olsa 782cd82a32eSJiri Olsa /* 783cd82a32eSJiri Olsa * The pmu data we store & need consists of the pmu 784cd82a32eSJiri Olsa * type value and format definitions. Load both right 785cd82a32eSJiri Olsa * now. 786cd82a32eSJiri Olsa */ 787cd82a32eSJiri Olsa if (pmu_format(name, &format)) 788cd82a32eSJiri Olsa return NULL; 789cd82a32eSJiri Olsa 79015b22ed3SAndi Kleen /* 79115b22ed3SAndi Kleen * Check the type first to avoid unnecessary work. 79215b22ed3SAndi Kleen */ 79315b22ed3SAndi Kleen if (pmu_type(name, &type)) 79415b22ed3SAndi Kleen return NULL; 79515b22ed3SAndi Kleen 7963fded963SJiri Olsa if (pmu_aliases(name, &aliases)) 7973fded963SJiri Olsa return NULL; 7983fded963SJiri Olsa 799cd82a32eSJiri Olsa pmu = zalloc(sizeof(*pmu)); 800cd82a32eSJiri Olsa if (!pmu) 801cd82a32eSJiri Olsa return NULL; 802cd82a32eSJiri Olsa 8037ae92e74SYan, Zheng pmu->cpus = pmu_cpumask(name); 80454e32dc0SGanapatrao Kulkarni pmu->name = strdup(name); 80554e32dc0SGanapatrao Kulkarni pmu->type = type; 80666ec1191SMark Rutland pmu->is_uncore = pmu_is_uncore(name); 80790a86bdeSJiri Olsa pmu->max_precise = pmu_max_precise(name); 80854e32dc0SGanapatrao Kulkarni pmu_add_cpu_aliases(&aliases, pmu); 80966ec1191SMark Rutland 810cd82a32eSJiri Olsa INIT_LIST_HEAD(&pmu->format); 811a6146d50SZheng Yan INIT_LIST_HEAD(&pmu->aliases); 812cd82a32eSJiri Olsa list_splice(&format, &pmu->format); 813a6146d50SZheng Yan list_splice(&aliases, &pmu->aliases); 8149bc8f9feSRobert Richter list_add_tail(&pmu->list, &pmus); 815dc0a6202SAdrian Hunter 816dc0a6202SAdrian Hunter pmu->default_config = perf_pmu__get_default_config(pmu); 817dc0a6202SAdrian Hunter 818cd82a32eSJiri Olsa return pmu; 819cd82a32eSJiri Olsa } 820cd82a32eSJiri Olsa 821b6b96fb4SAdrian Hunter static struct perf_pmu *pmu_find(const char *name) 822cd82a32eSJiri Olsa { 823cd82a32eSJiri Olsa struct perf_pmu *pmu; 824cd82a32eSJiri Olsa 825cd82a32eSJiri Olsa list_for_each_entry(pmu, &pmus, list) 826cd82a32eSJiri Olsa if (!strcmp(pmu->name, name)) 827cd82a32eSJiri Olsa return pmu; 828cd82a32eSJiri Olsa 829cd82a32eSJiri Olsa return NULL; 830cd82a32eSJiri Olsa } 831cd82a32eSJiri Olsa 83250a9667cSRobert Richter struct perf_pmu *perf_pmu__scan(struct perf_pmu *pmu) 83350a9667cSRobert Richter { 83450a9667cSRobert Richter /* 83550a9667cSRobert Richter * pmu iterator: If pmu is NULL, we start at the begin, 83650a9667cSRobert Richter * otherwise return the next pmu. Returns NULL on end. 83750a9667cSRobert Richter */ 83850a9667cSRobert Richter if (!pmu) { 83950a9667cSRobert Richter pmu_read_sysfs(); 84050a9667cSRobert Richter pmu = list_prepare_entry(pmu, &pmus, list); 84150a9667cSRobert Richter } 84250a9667cSRobert Richter list_for_each_entry_continue(pmu, &pmus, list) 84350a9667cSRobert Richter return pmu; 84450a9667cSRobert Richter return NULL; 84550a9667cSRobert Richter } 84650a9667cSRobert Richter 847b6b96fb4SAdrian Hunter struct perf_pmu *perf_pmu__find(const char *name) 848cd82a32eSJiri Olsa { 849cd82a32eSJiri Olsa struct perf_pmu *pmu; 850cd82a32eSJiri Olsa 851cd82a32eSJiri Olsa /* 852cd82a32eSJiri Olsa * Once PMU is loaded it stays in the list, 853cd82a32eSJiri Olsa * so we keep us from multiple reading/parsing 854cd82a32eSJiri Olsa * the pmu format definitions. 855cd82a32eSJiri Olsa */ 856cd82a32eSJiri Olsa pmu = pmu_find(name); 857cd82a32eSJiri Olsa if (pmu) 858cd82a32eSJiri Olsa return pmu; 859cd82a32eSJiri Olsa 860cd82a32eSJiri Olsa return pmu_lookup(name); 861cd82a32eSJiri Olsa } 862cd82a32eSJiri Olsa 8635c6ccc37SArnaldo Carvalho de Melo static struct perf_pmu_format * 86409ff6071SAdrian Hunter pmu_find_format(struct list_head *formats, const char *name) 865cd82a32eSJiri Olsa { 8665c6ccc37SArnaldo Carvalho de Melo struct perf_pmu_format *format; 867cd82a32eSJiri Olsa 868cd82a32eSJiri Olsa list_for_each_entry(format, formats, list) 869cd82a32eSJiri Olsa if (!strcmp(format->name, name)) 870cd82a32eSJiri Olsa return format; 871cd82a32eSJiri Olsa 872cd82a32eSJiri Olsa return NULL; 873cd82a32eSJiri Olsa } 874cd82a32eSJiri Olsa 87509ff6071SAdrian Hunter __u64 perf_pmu__format_bits(struct list_head *formats, const char *name) 87609ff6071SAdrian Hunter { 87709ff6071SAdrian Hunter struct perf_pmu_format *format = pmu_find_format(formats, name); 87809ff6071SAdrian Hunter __u64 bits = 0; 87909ff6071SAdrian Hunter int fbit; 88009ff6071SAdrian Hunter 88109ff6071SAdrian Hunter if (!format) 88209ff6071SAdrian Hunter return 0; 88309ff6071SAdrian Hunter 88409ff6071SAdrian Hunter for_each_set_bit(fbit, format->bits, PERF_PMU_FORMAT_BITS) 88509ff6071SAdrian Hunter bits |= 1ULL << fbit; 88609ff6071SAdrian Hunter 88709ff6071SAdrian Hunter return bits; 88809ff6071SAdrian Hunter } 88909ff6071SAdrian Hunter 890cd82a32eSJiri Olsa /* 891dc0a6202SAdrian Hunter * Sets value based on the format definition (format parameter) 892cd82a32eSJiri Olsa * and unformated value (value parameter). 893cd82a32eSJiri Olsa */ 894dc0a6202SAdrian Hunter static void pmu_format_value(unsigned long *format, __u64 value, __u64 *v, 895dc0a6202SAdrian Hunter bool zero) 896cd82a32eSJiri Olsa { 897cd82a32eSJiri Olsa unsigned long fbit, vbit; 898cd82a32eSJiri Olsa 899cd82a32eSJiri Olsa for (fbit = 0, vbit = 0; fbit < PERF_PMU_FORMAT_BITS; fbit++) { 900cd82a32eSJiri Olsa 901cd82a32eSJiri Olsa if (!test_bit(fbit, format)) 902cd82a32eSJiri Olsa continue; 903cd82a32eSJiri Olsa 904dc0a6202SAdrian Hunter if (value & (1llu << vbit++)) 905dc0a6202SAdrian Hunter *v |= (1llu << fbit); 906dc0a6202SAdrian Hunter else if (zero) 907dc0a6202SAdrian Hunter *v &= ~(1llu << fbit); 908cd82a32eSJiri Olsa } 909cd82a32eSJiri Olsa } 910cd82a32eSJiri Olsa 9110efe6b67SAdrian Hunter static __u64 pmu_format_max_value(const unsigned long *format) 9120efe6b67SAdrian Hunter { 9131b9caa10SJiri Olsa int w; 9140efe6b67SAdrian Hunter 9151b9caa10SJiri Olsa w = bitmap_weight(format, PERF_PMU_FORMAT_BITS); 9161b9caa10SJiri Olsa if (!w) 9171b9caa10SJiri Olsa return 0; 9181b9caa10SJiri Olsa if (w < 64) 9191b9caa10SJiri Olsa return (1ULL << w) - 1; 9201b9caa10SJiri Olsa return -1; 9210efe6b67SAdrian Hunter } 9220efe6b67SAdrian Hunter 923cd82a32eSJiri Olsa /* 924688d4dfcSCody P Schafer * Term is a string term, and might be a param-term. Try to look up it's value 925688d4dfcSCody P Schafer * in the remaining terms. 926688d4dfcSCody P Schafer * - We have a term like "base-or-format-term=param-term", 927688d4dfcSCody P Schafer * - We need to find the value supplied for "param-term" (with param-term named 928688d4dfcSCody P Schafer * in a config string) later on in the term list. 929688d4dfcSCody P Schafer */ 930688d4dfcSCody P Schafer static int pmu_resolve_param_term(struct parse_events_term *term, 931688d4dfcSCody P Schafer struct list_head *head_terms, 932688d4dfcSCody P Schafer __u64 *value) 933688d4dfcSCody P Schafer { 934688d4dfcSCody P Schafer struct parse_events_term *t; 935688d4dfcSCody P Schafer 936688d4dfcSCody P Schafer list_for_each_entry(t, head_terms, list) { 937688d4dfcSCody P Schafer if (t->type_val == PARSE_EVENTS__TERM_TYPE_NUM) { 938688d4dfcSCody P Schafer if (!strcmp(t->config, term->config)) { 939688d4dfcSCody P Schafer t->used = true; 940688d4dfcSCody P Schafer *value = t->val.num; 941688d4dfcSCody P Schafer return 0; 942688d4dfcSCody P Schafer } 943688d4dfcSCody P Schafer } 944688d4dfcSCody P Schafer } 945688d4dfcSCody P Schafer 946bb963e16SNamhyung Kim if (verbose > 0) 947688d4dfcSCody P Schafer printf("Required parameter '%s' not specified\n", term->config); 948688d4dfcSCody P Schafer 949688d4dfcSCody P Schafer return -1; 950688d4dfcSCody P Schafer } 951688d4dfcSCody P Schafer 952ffeb883eSHe Kuang static char *pmu_formats_string(struct list_head *formats) 953e64b020bSJiri Olsa { 954e64b020bSJiri Olsa struct perf_pmu_format *format; 95511db4e29SMasami Hiramatsu char *str = NULL; 95611db4e29SMasami Hiramatsu struct strbuf buf = STRBUF_INIT; 957e64b020bSJiri Olsa unsigned i = 0; 958e64b020bSJiri Olsa 959ffeb883eSHe Kuang if (!formats) 960e64b020bSJiri Olsa return NULL; 961e64b020bSJiri Olsa 962e64b020bSJiri Olsa /* sysfs exported terms */ 963ffeb883eSHe Kuang list_for_each_entry(format, formats, list) 96411db4e29SMasami Hiramatsu if (strbuf_addf(&buf, i++ ? ",%s" : "%s", format->name) < 0) 96511db4e29SMasami Hiramatsu goto error; 966e64b020bSJiri Olsa 967ffeb883eSHe Kuang str = strbuf_detach(&buf, NULL); 96811db4e29SMasami Hiramatsu error: 969ffeb883eSHe Kuang strbuf_release(&buf); 970e64b020bSJiri Olsa 971e64b020bSJiri Olsa return str; 972e64b020bSJiri Olsa } 973e64b020bSJiri Olsa 974688d4dfcSCody P Schafer /* 975cd82a32eSJiri Olsa * Setup one of config[12] attr members based on the 97688aca8d9SCody P Schafer * user input data - term parameter. 977cd82a32eSJiri Olsa */ 978cd82a32eSJiri Olsa static int pmu_config_term(struct list_head *formats, 979cd82a32eSJiri Olsa struct perf_event_attr *attr, 980dc0a6202SAdrian Hunter struct parse_events_term *term, 981688d4dfcSCody P Schafer struct list_head *head_terms, 982e64b020bSJiri Olsa bool zero, struct parse_events_error *err) 983cd82a32eSJiri Olsa { 9845c6ccc37SArnaldo Carvalho de Melo struct perf_pmu_format *format; 985cd82a32eSJiri Olsa __u64 *vp; 9860efe6b67SAdrian Hunter __u64 val, max_val; 987cd82a32eSJiri Olsa 988cd82a32eSJiri Olsa /* 989688d4dfcSCody P Schafer * If this is a parameter we've already used for parameterized-eval, 990688d4dfcSCody P Schafer * skip it in normal eval. 991688d4dfcSCody P Schafer */ 992688d4dfcSCody P Schafer if (term->used) 993688d4dfcSCody P Schafer return 0; 994688d4dfcSCody P Schafer 995688d4dfcSCody P Schafer /* 996cd82a32eSJiri Olsa * Hardcoded terms should be already in, so nothing 997cd82a32eSJiri Olsa * to be done for them. 998cd82a32eSJiri Olsa */ 999cd82a32eSJiri Olsa if (parse_events__is_hardcoded_term(term)) 1000cd82a32eSJiri Olsa return 0; 1001cd82a32eSJiri Olsa 1002cd82a32eSJiri Olsa format = pmu_find_format(formats, term->config); 1003688d4dfcSCody P Schafer if (!format) { 1004bb963e16SNamhyung Kim if (verbose > 0) 1005688d4dfcSCody P Schafer printf("Invalid event/parameter '%s'\n", term->config); 1006e64b020bSJiri Olsa if (err) { 1007ffeb883eSHe Kuang char *pmu_term = pmu_formats_string(formats); 1008ffeb883eSHe Kuang 1009e64b020bSJiri Olsa err->idx = term->err_term; 1010e64b020bSJiri Olsa err->str = strdup("unknown term"); 1011ffeb883eSHe Kuang err->help = parse_events_formats_error_string(pmu_term); 1012ffeb883eSHe Kuang free(pmu_term); 1013e64b020bSJiri Olsa } 1014cd82a32eSJiri Olsa return -EINVAL; 1015688d4dfcSCody P Schafer } 1016cd82a32eSJiri Olsa 1017cd82a32eSJiri Olsa switch (format->value) { 1018cd82a32eSJiri Olsa case PERF_PMU_FORMAT_VALUE_CONFIG: 1019cd82a32eSJiri Olsa vp = &attr->config; 1020cd82a32eSJiri Olsa break; 1021cd82a32eSJiri Olsa case PERF_PMU_FORMAT_VALUE_CONFIG1: 1022cd82a32eSJiri Olsa vp = &attr->config1; 1023cd82a32eSJiri Olsa break; 1024cd82a32eSJiri Olsa case PERF_PMU_FORMAT_VALUE_CONFIG2: 1025cd82a32eSJiri Olsa vp = &attr->config2; 1026cd82a32eSJiri Olsa break; 1027cd82a32eSJiri Olsa default: 1028cd82a32eSJiri Olsa return -EINVAL; 1029cd82a32eSJiri Olsa } 1030cd82a32eSJiri Olsa 103116fa7e82SJiri Olsa /* 1032688d4dfcSCody P Schafer * Either directly use a numeric term, or try to translate string terms 1033688d4dfcSCody P Schafer * using event parameters. 103416fa7e82SJiri Olsa */ 103599e7138eSJiri Olsa if (term->type_val == PARSE_EVENTS__TERM_TYPE_NUM) { 103699e7138eSJiri Olsa if (term->no_value && 103799e7138eSJiri Olsa bitmap_weight(format->bits, PERF_PMU_FORMAT_BITS) > 1) { 103899e7138eSJiri Olsa if (err) { 103999e7138eSJiri Olsa err->idx = term->err_val; 104099e7138eSJiri Olsa err->str = strdup("no value assigned for term"); 104199e7138eSJiri Olsa } 104299e7138eSJiri Olsa return -EINVAL; 104399e7138eSJiri Olsa } 104499e7138eSJiri Olsa 1045688d4dfcSCody P Schafer val = term->val.num; 104699e7138eSJiri Olsa } else if (term->type_val == PARSE_EVENTS__TERM_TYPE_STR) { 1047688d4dfcSCody P Schafer if (strcmp(term->val.str, "?")) { 1048bb963e16SNamhyung Kim if (verbose > 0) { 1049688d4dfcSCody P Schafer pr_info("Invalid sysfs entry %s=%s\n", 1050688d4dfcSCody P Schafer term->config, term->val.str); 1051e64b020bSJiri Olsa } 1052e64b020bSJiri Olsa if (err) { 1053e64b020bSJiri Olsa err->idx = term->err_val; 1054e64b020bSJiri Olsa err->str = strdup("expected numeric value"); 1055e64b020bSJiri Olsa } 1056688d4dfcSCody P Schafer return -EINVAL; 1057688d4dfcSCody P Schafer } 1058688d4dfcSCody P Schafer 1059688d4dfcSCody P Schafer if (pmu_resolve_param_term(term, head_terms, &val)) 1060688d4dfcSCody P Schafer return -EINVAL; 1061688d4dfcSCody P Schafer } else 1062688d4dfcSCody P Schafer return -EINVAL; 1063688d4dfcSCody P Schafer 10640efe6b67SAdrian Hunter max_val = pmu_format_max_value(format->bits); 10650efe6b67SAdrian Hunter if (val > max_val) { 10660efe6b67SAdrian Hunter if (err) { 10670efe6b67SAdrian Hunter err->idx = term->err_val; 10680efe6b67SAdrian Hunter if (asprintf(&err->str, 10690efe6b67SAdrian Hunter "value too big for format, maximum is %llu", 10700efe6b67SAdrian Hunter (unsigned long long)max_val) < 0) 10710efe6b67SAdrian Hunter err->str = strdup("value too big for format"); 10720efe6b67SAdrian Hunter return -EINVAL; 10730efe6b67SAdrian Hunter } 10740efe6b67SAdrian Hunter /* 10750efe6b67SAdrian Hunter * Assume we don't care if !err, in which case the value will be 10760efe6b67SAdrian Hunter * silently truncated. 10770efe6b67SAdrian Hunter */ 10780efe6b67SAdrian Hunter } 10790efe6b67SAdrian Hunter 1080688d4dfcSCody P Schafer pmu_format_value(format->bits, val, vp, zero); 1081cd82a32eSJiri Olsa return 0; 1082cd82a32eSJiri Olsa } 1083cd82a32eSJiri Olsa 1084cff7f956SJiri Olsa int perf_pmu__config_terms(struct list_head *formats, 1085cff7f956SJiri Olsa struct perf_event_attr *attr, 1086dc0a6202SAdrian Hunter struct list_head *head_terms, 1087e64b020bSJiri Olsa bool zero, struct parse_events_error *err) 1088cd82a32eSJiri Olsa { 10896cee6cd3SArnaldo Carvalho de Melo struct parse_events_term *term; 1090cd82a32eSJiri Olsa 1091688d4dfcSCody P Schafer list_for_each_entry(term, head_terms, list) { 1092e64b020bSJiri Olsa if (pmu_config_term(formats, attr, term, head_terms, 1093e64b020bSJiri Olsa zero, err)) 1094cd82a32eSJiri Olsa return -EINVAL; 1095688d4dfcSCody P Schafer } 1096cd82a32eSJiri Olsa 1097cd82a32eSJiri Olsa return 0; 1098cd82a32eSJiri Olsa } 1099cd82a32eSJiri Olsa 1100cd82a32eSJiri Olsa /* 1101cd82a32eSJiri Olsa * Configures event's 'attr' parameter based on the: 1102cd82a32eSJiri Olsa * 1) users input - specified in terms parameter 1103cd82a32eSJiri Olsa * 2) pmu format definitions - specified by pmu parameter 1104cd82a32eSJiri Olsa */ 1105cd82a32eSJiri Olsa int perf_pmu__config(struct perf_pmu *pmu, struct perf_event_attr *attr, 1106e64b020bSJiri Olsa struct list_head *head_terms, 1107e64b020bSJiri Olsa struct parse_events_error *err) 1108cd82a32eSJiri Olsa { 1109dc0a6202SAdrian Hunter bool zero = !!pmu->default_config; 1110dc0a6202SAdrian Hunter 1111cd82a32eSJiri Olsa attr->type = pmu->type; 1112e64b020bSJiri Olsa return perf_pmu__config_terms(&pmu->format, attr, head_terms, 1113e64b020bSJiri Olsa zero, err); 1114cd82a32eSJiri Olsa } 1115cd82a32eSJiri Olsa 11165c6ccc37SArnaldo Carvalho de Melo static struct perf_pmu_alias *pmu_find_alias(struct perf_pmu *pmu, 11176cee6cd3SArnaldo Carvalho de Melo struct parse_events_term *term) 1118a6146d50SZheng Yan { 11195c6ccc37SArnaldo Carvalho de Melo struct perf_pmu_alias *alias; 1120a6146d50SZheng Yan char *name; 1121a6146d50SZheng Yan 1122a6146d50SZheng Yan if (parse_events__is_hardcoded_term(term)) 1123a6146d50SZheng Yan return NULL; 1124a6146d50SZheng Yan 1125a6146d50SZheng Yan if (term->type_val == PARSE_EVENTS__TERM_TYPE_NUM) { 1126a6146d50SZheng Yan if (term->val.num != 1) 1127a6146d50SZheng Yan return NULL; 1128a6146d50SZheng Yan if (pmu_find_format(&pmu->format, term->config)) 1129a6146d50SZheng Yan return NULL; 1130a6146d50SZheng Yan name = term->config; 1131a6146d50SZheng Yan } else if (term->type_val == PARSE_EVENTS__TERM_TYPE_STR) { 1132a6146d50SZheng Yan if (strcasecmp(term->config, "event")) 1133a6146d50SZheng Yan return NULL; 1134a6146d50SZheng Yan name = term->val.str; 1135a6146d50SZheng Yan } else { 1136a6146d50SZheng Yan return NULL; 1137a6146d50SZheng Yan } 1138a6146d50SZheng Yan 1139a6146d50SZheng Yan list_for_each_entry(alias, &pmu->aliases, list) { 1140a6146d50SZheng Yan if (!strcasecmp(alias->name, name)) 1141a6146d50SZheng Yan return alias; 1142a6146d50SZheng Yan } 1143a6146d50SZheng Yan return NULL; 1144a6146d50SZheng Yan } 1145a6146d50SZheng Yan 1146410136f5SStephane Eranian 11471d9e446bSJiri Olsa static int check_info_data(struct perf_pmu_alias *alias, 11481d9e446bSJiri Olsa struct perf_pmu_info *info) 1149410136f5SStephane Eranian { 1150410136f5SStephane Eranian /* 1151410136f5SStephane Eranian * Only one term in event definition can 11521d9e446bSJiri Olsa * define unit, scale and snapshot, fail 11531d9e446bSJiri Olsa * if there's more than one. 1154410136f5SStephane Eranian */ 1155b30a7d1fSArnaldo Carvalho de Melo if ((info->unit && alias->unit[0]) || 11561d9e446bSJiri Olsa (info->scale && alias->scale) || 11571d9e446bSJiri Olsa (info->snapshot && alias->snapshot)) 1158410136f5SStephane Eranian return -EINVAL; 1159410136f5SStephane Eranian 1160b30a7d1fSArnaldo Carvalho de Melo if (alias->unit[0]) 11611d9e446bSJiri Olsa info->unit = alias->unit; 1162410136f5SStephane Eranian 1163410136f5SStephane Eranian if (alias->scale) 11641d9e446bSJiri Olsa info->scale = alias->scale; 11651d9e446bSJiri Olsa 11661d9e446bSJiri Olsa if (alias->snapshot) 11671d9e446bSJiri Olsa info->snapshot = alias->snapshot; 1168410136f5SStephane Eranian 1169410136f5SStephane Eranian return 0; 1170410136f5SStephane Eranian } 1171410136f5SStephane Eranian 1172a6146d50SZheng Yan /* 1173a6146d50SZheng Yan * Find alias in the terms list and replace it with the terms 1174a6146d50SZheng Yan * defined for the alias 1175a6146d50SZheng Yan */ 1176410136f5SStephane Eranian int perf_pmu__check_alias(struct perf_pmu *pmu, struct list_head *head_terms, 117746441bdcSMatt Fleming struct perf_pmu_info *info) 1178a6146d50SZheng Yan { 11796cee6cd3SArnaldo Carvalho de Melo struct parse_events_term *term, *h; 11805c6ccc37SArnaldo Carvalho de Melo struct perf_pmu_alias *alias; 1181a6146d50SZheng Yan int ret; 1182a6146d50SZheng Yan 1183044330c1SMatt Fleming info->per_pkg = false; 1184044330c1SMatt Fleming 11858a398897SStephane Eranian /* 11868a398897SStephane Eranian * Mark unit and scale as not set 11878a398897SStephane Eranian * (different from default values, see below) 11888a398897SStephane Eranian */ 118946441bdcSMatt Fleming info->unit = NULL; 119046441bdcSMatt Fleming info->scale = 0.0; 11911d9e446bSJiri Olsa info->snapshot = false; 119237932c18SAndi Kleen info->metric_expr = NULL; 119396284814SAndi Kleen info->metric_name = NULL; 1194410136f5SStephane Eranian 1195a6146d50SZheng Yan list_for_each_entry_safe(term, h, head_terms, list) { 1196a6146d50SZheng Yan alias = pmu_find_alias(pmu, term); 1197a6146d50SZheng Yan if (!alias) 1198a6146d50SZheng Yan continue; 1199a6146d50SZheng Yan ret = pmu_alias_terms(alias, &term->list); 1200a6146d50SZheng Yan if (ret) 1201a6146d50SZheng Yan return ret; 1202410136f5SStephane Eranian 12031d9e446bSJiri Olsa ret = check_info_data(alias, info); 1204410136f5SStephane Eranian if (ret) 1205410136f5SStephane Eranian return ret; 1206410136f5SStephane Eranian 1207044330c1SMatt Fleming if (alias->per_pkg) 1208044330c1SMatt Fleming info->per_pkg = true; 120937932c18SAndi Kleen info->metric_expr = alias->metric_expr; 121096284814SAndi Kleen info->metric_name = alias->metric_name; 1211044330c1SMatt Fleming 1212a6146d50SZheng Yan list_del(&term->list); 1213a6146d50SZheng Yan free(term); 1214a6146d50SZheng Yan } 12158a398897SStephane Eranian 12168a398897SStephane Eranian /* 12178a398897SStephane Eranian * if no unit or scale foundin aliases, then 12188a398897SStephane Eranian * set defaults as for evsel 12198a398897SStephane Eranian * unit cannot left to NULL 12208a398897SStephane Eranian */ 122146441bdcSMatt Fleming if (info->unit == NULL) 122246441bdcSMatt Fleming info->unit = ""; 12238a398897SStephane Eranian 122446441bdcSMatt Fleming if (info->scale == 0.0) 122546441bdcSMatt Fleming info->scale = 1.0; 12268a398897SStephane Eranian 1227a6146d50SZheng Yan return 0; 1228a6146d50SZheng Yan } 1229a6146d50SZheng Yan 1230cd82a32eSJiri Olsa int perf_pmu__new_format(struct list_head *list, char *name, 1231cd82a32eSJiri Olsa int config, unsigned long *bits) 1232cd82a32eSJiri Olsa { 12335c6ccc37SArnaldo Carvalho de Melo struct perf_pmu_format *format; 1234cd82a32eSJiri Olsa 1235cd82a32eSJiri Olsa format = zalloc(sizeof(*format)); 1236cd82a32eSJiri Olsa if (!format) 1237cd82a32eSJiri Olsa return -ENOMEM; 1238cd82a32eSJiri Olsa 1239cd82a32eSJiri Olsa format->name = strdup(name); 1240cd82a32eSJiri Olsa format->value = config; 1241cd82a32eSJiri Olsa memcpy(format->bits, bits, sizeof(format->bits)); 1242cd82a32eSJiri Olsa 1243cd82a32eSJiri Olsa list_add_tail(&format->list, list); 1244cd82a32eSJiri Olsa return 0; 1245cd82a32eSJiri Olsa } 1246cd82a32eSJiri Olsa 1247cd82a32eSJiri Olsa void perf_pmu__set_format(unsigned long *bits, long from, long to) 1248cd82a32eSJiri Olsa { 1249cd82a32eSJiri Olsa long b; 1250cd82a32eSJiri Olsa 1251cd82a32eSJiri Olsa if (!to) 1252cd82a32eSJiri Olsa to = from; 1253cd82a32eSJiri Olsa 125415268138SSukadev Bhattiprolu memset(bits, 0, BITS_TO_BYTES(PERF_PMU_FORMAT_BITS)); 1255cd82a32eSJiri Olsa for (b = from; b <= to; b++) 1256cd82a32eSJiri Olsa set_bit(b, bits); 1257cd82a32eSJiri Olsa } 1258dc098b35SAndi Kleen 1259aaea3617SCody P Schafer static int sub_non_neg(int a, int b) 1260aaea3617SCody P Schafer { 1261aaea3617SCody P Schafer if (b > a) 1262aaea3617SCody P Schafer return 0; 1263aaea3617SCody P Schafer return a - b; 1264aaea3617SCody P Schafer } 1265aaea3617SCody P Schafer 1266dc098b35SAndi Kleen static char *format_alias(char *buf, int len, struct perf_pmu *pmu, 1267dc098b35SAndi Kleen struct perf_pmu_alias *alias) 1268dc098b35SAndi Kleen { 1269aaea3617SCody P Schafer struct parse_events_term *term; 1270aaea3617SCody P Schafer int used = snprintf(buf, len, "%s/%s", pmu->name, alias->name); 1271aaea3617SCody P Schafer 1272aaea3617SCody P Schafer list_for_each_entry(term, &alias->terms, list) { 1273aaea3617SCody P Schafer if (term->type_val == PARSE_EVENTS__TERM_TYPE_STR) 1274aaea3617SCody P Schafer used += snprintf(buf + used, sub_non_neg(len, used), 1275aaea3617SCody P Schafer ",%s=%s", term->config, 1276aaea3617SCody P Schafer term->val.str); 1277aaea3617SCody P Schafer } 1278aaea3617SCody P Schafer 1279aaea3617SCody P Schafer if (sub_non_neg(len, used) > 0) { 1280aaea3617SCody P Schafer buf[used] = '/'; 1281aaea3617SCody P Schafer used++; 1282aaea3617SCody P Schafer } 1283aaea3617SCody P Schafer if (sub_non_neg(len, used) > 0) { 1284aaea3617SCody P Schafer buf[used] = '\0'; 1285aaea3617SCody P Schafer used++; 1286aaea3617SCody P Schafer } else 1287aaea3617SCody P Schafer buf[len - 1] = '\0'; 1288aaea3617SCody P Schafer 1289dc098b35SAndi Kleen return buf; 1290dc098b35SAndi Kleen } 1291dc098b35SAndi Kleen 1292dc098b35SAndi Kleen static char *format_alias_or(char *buf, int len, struct perf_pmu *pmu, 1293dc098b35SAndi Kleen struct perf_pmu_alias *alias) 1294dc098b35SAndi Kleen { 1295dc098b35SAndi Kleen snprintf(buf, len, "%s OR %s/%s/", alias->name, pmu->name, alias->name); 1296dc098b35SAndi Kleen return buf; 1297dc098b35SAndi Kleen } 1298dc098b35SAndi Kleen 1299dd5f1036SAndi Kleen struct sevent { 130008e60ed1SAndi Kleen char *name; 130108e60ed1SAndi Kleen char *desc; 1302dd5f1036SAndi Kleen char *topic; 1303f2361024SAndi Kleen char *str; 1304f2361024SAndi Kleen char *pmu; 13057f372a63SAndi Kleen char *metric_expr; 130696284814SAndi Kleen char *metric_name; 130708e60ed1SAndi Kleen }; 130808e60ed1SAndi Kleen 1309dd5f1036SAndi Kleen static int cmp_sevent(const void *a, const void *b) 1310dc098b35SAndi Kleen { 1311dd5f1036SAndi Kleen const struct sevent *as = a; 1312dd5f1036SAndi Kleen const struct sevent *bs = b; 131308e60ed1SAndi Kleen 131408e60ed1SAndi Kleen /* Put extra events last */ 131508e60ed1SAndi Kleen if (!!as->desc != !!bs->desc) 131608e60ed1SAndi Kleen return !!as->desc - !!bs->desc; 1317dd5f1036SAndi Kleen if (as->topic && bs->topic) { 1318dd5f1036SAndi Kleen int n = strcmp(as->topic, bs->topic); 1319dd5f1036SAndi Kleen 1320dd5f1036SAndi Kleen if (n) 1321dd5f1036SAndi Kleen return n; 1322dd5f1036SAndi Kleen } 132308e60ed1SAndi Kleen return strcmp(as->name, bs->name); 132408e60ed1SAndi Kleen } 132508e60ed1SAndi Kleen 132608e60ed1SAndi Kleen static void wordwrap(char *s, int start, int max, int corr) 132708e60ed1SAndi Kleen { 132808e60ed1SAndi Kleen int column = start; 132908e60ed1SAndi Kleen int n; 133008e60ed1SAndi Kleen 133108e60ed1SAndi Kleen while (*s) { 133208e60ed1SAndi Kleen int wlen = strcspn(s, " \t"); 133308e60ed1SAndi Kleen 133408e60ed1SAndi Kleen if (column + wlen >= max && column > start) { 133508e60ed1SAndi Kleen printf("\n%*s", start, ""); 133608e60ed1SAndi Kleen column = start + corr; 133708e60ed1SAndi Kleen } 133808e60ed1SAndi Kleen n = printf("%s%.*s", column > start ? " " : "", wlen, s); 133908e60ed1SAndi Kleen if (n <= 0) 134008e60ed1SAndi Kleen break; 134108e60ed1SAndi Kleen s += wlen; 134208e60ed1SAndi Kleen column += n; 134332858480SArnaldo Carvalho de Melo s = skip_spaces(s); 134408e60ed1SAndi Kleen } 1345dc098b35SAndi Kleen } 1346dc098b35SAndi Kleen 1347c8d6828aSSukadev Bhattiprolu void print_pmu_events(const char *event_glob, bool name_only, bool quiet_flag, 1348bf874fcfSAndi Kleen bool long_desc, bool details_flag) 1349dc098b35SAndi Kleen { 1350dc098b35SAndi Kleen struct perf_pmu *pmu; 1351dc098b35SAndi Kleen struct perf_pmu_alias *alias; 1352dc098b35SAndi Kleen char buf[1024]; 1353dc098b35SAndi Kleen int printed = 0; 1354dc098b35SAndi Kleen int len, j; 1355dd5f1036SAndi Kleen struct sevent *aliases; 135608e60ed1SAndi Kleen int numdesc = 0; 135761eb2eb4SAndi Kleen int columns = pager_get_columns(); 1358dd5f1036SAndi Kleen char *topic = NULL; 1359dc098b35SAndi Kleen 1360dc098b35SAndi Kleen pmu = NULL; 1361dc098b35SAndi Kleen len = 0; 136242634bc7SAdrian Hunter while ((pmu = perf_pmu__scan(pmu)) != NULL) { 1363dc098b35SAndi Kleen list_for_each_entry(alias, &pmu->aliases, list) 1364dc098b35SAndi Kleen len++; 136542634bc7SAdrian Hunter if (pmu->selectable) 136642634bc7SAdrian Hunter len++; 136742634bc7SAdrian Hunter } 1368dd5f1036SAndi Kleen aliases = zalloc(sizeof(struct sevent) * len); 1369dc098b35SAndi Kleen if (!aliases) 13707e4772dcSArnaldo Carvalho de Melo goto out_enomem; 1371dc098b35SAndi Kleen pmu = NULL; 1372dc098b35SAndi Kleen j = 0; 137342634bc7SAdrian Hunter while ((pmu = perf_pmu__scan(pmu)) != NULL) { 1374dc098b35SAndi Kleen list_for_each_entry(alias, &pmu->aliases, list) { 137508e60ed1SAndi Kleen char *name = alias->desc ? alias->name : 137608e60ed1SAndi Kleen format_alias(buf, sizeof(buf), pmu, alias); 1377dc098b35SAndi Kleen bool is_cpu = !strcmp(pmu->name, "cpu"); 1378dc098b35SAndi Kleen 1379dc098b35SAndi Kleen if (event_glob != NULL && 138038d14f0cSAndi Kleen !(strglobmatch_nocase(name, event_glob) || 138138d14f0cSAndi Kleen (!is_cpu && strglobmatch_nocase(alias->name, 138267bdc35fSAndi Kleen event_glob)) || 138367bdc35fSAndi Kleen (alias->topic && 138467bdc35fSAndi Kleen strglobmatch_nocase(alias->topic, event_glob)))) 1385dc098b35SAndi Kleen continue; 13867e4772dcSArnaldo Carvalho de Melo 138708e60ed1SAndi Kleen if (is_cpu && !name_only && !alias->desc) 13887e4772dcSArnaldo Carvalho de Melo name = format_alias_or(buf, sizeof(buf), pmu, alias); 13897e4772dcSArnaldo Carvalho de Melo 139008e60ed1SAndi Kleen aliases[j].name = name; 139108e60ed1SAndi Kleen if (is_cpu && !name_only && !alias->desc) 139208e60ed1SAndi Kleen aliases[j].name = format_alias_or(buf, 139308e60ed1SAndi Kleen sizeof(buf), 139408e60ed1SAndi Kleen pmu, alias); 139508e60ed1SAndi Kleen aliases[j].name = strdup(aliases[j].name); 139608e60ed1SAndi Kleen if (!aliases[j].name) 13977e4772dcSArnaldo Carvalho de Melo goto out_enomem; 139808e60ed1SAndi Kleen 1399c8d6828aSSukadev Bhattiprolu aliases[j].desc = long_desc ? alias->long_desc : 1400c8d6828aSSukadev Bhattiprolu alias->desc; 1401dd5f1036SAndi Kleen aliases[j].topic = alias->topic; 1402f2361024SAndi Kleen aliases[j].str = alias->str; 1403f2361024SAndi Kleen aliases[j].pmu = pmu->name; 14047f372a63SAndi Kleen aliases[j].metric_expr = alias->metric_expr; 140596284814SAndi Kleen aliases[j].metric_name = alias->metric_name; 1406dc098b35SAndi Kleen j++; 1407dc098b35SAndi Kleen } 1408fa52ceabSArnaldo Carvalho de Melo if (pmu->selectable && 1409fa52ceabSArnaldo Carvalho de Melo (event_glob == NULL || strglobmatch(pmu->name, event_glob))) { 14107e4772dcSArnaldo Carvalho de Melo char *s; 14117e4772dcSArnaldo Carvalho de Melo if (asprintf(&s, "%s//", pmu->name) < 0) 14127e4772dcSArnaldo Carvalho de Melo goto out_enomem; 141308e60ed1SAndi Kleen aliases[j].name = s; 141442634bc7SAdrian Hunter j++; 141542634bc7SAdrian Hunter } 141642634bc7SAdrian Hunter } 1417dc098b35SAndi Kleen len = j; 1418dd5f1036SAndi Kleen qsort(aliases, len, sizeof(struct sevent), cmp_sevent); 1419dc098b35SAndi Kleen for (j = 0; j < len; j++) { 142015b22ed3SAndi Kleen /* Skip duplicates */ 142115b22ed3SAndi Kleen if (j > 0 && !strcmp(aliases[j].name, aliases[j - 1].name)) 142215b22ed3SAndi Kleen continue; 1423dc098b35SAndi Kleen if (name_only) { 142408e60ed1SAndi Kleen printf("%s ", aliases[j].name); 1425dc098b35SAndi Kleen continue; 1426dc098b35SAndi Kleen } 14271c5f01feSAndi Kleen if (aliases[j].desc && !quiet_flag) { 142808e60ed1SAndi Kleen if (numdesc++ == 0) 142908e60ed1SAndi Kleen printf("\n"); 1430dd5f1036SAndi Kleen if (aliases[j].topic && (!topic || 1431dd5f1036SAndi Kleen strcmp(topic, aliases[j].topic))) { 1432dd5f1036SAndi Kleen printf("%s%s:\n", topic ? "\n" : "", 1433dd5f1036SAndi Kleen aliases[j].topic); 1434dd5f1036SAndi Kleen topic = aliases[j].topic; 1435dd5f1036SAndi Kleen } 143608e60ed1SAndi Kleen printf(" %-50s\n", aliases[j].name); 143708e60ed1SAndi Kleen printf("%*s", 8, "["); 143808e60ed1SAndi Kleen wordwrap(aliases[j].desc, 8, columns, 0); 143908e60ed1SAndi Kleen printf("]\n"); 1440bf874fcfSAndi Kleen if (details_flag) { 14417f372a63SAndi Kleen printf("%*s%s/%s/ ", 8, "", aliases[j].pmu, aliases[j].str); 144296284814SAndi Kleen if (aliases[j].metric_name) 144396284814SAndi Kleen printf(" MetricName: %s", aliases[j].metric_name); 14447f372a63SAndi Kleen if (aliases[j].metric_expr) 14457f372a63SAndi Kleen printf(" MetricExpr: %s", aliases[j].metric_expr); 14467f372a63SAndi Kleen putchar('\n'); 14477f372a63SAndi Kleen } 144808e60ed1SAndi Kleen } else 144908e60ed1SAndi Kleen printf(" %-50s [Kernel PMU event]\n", aliases[j].name); 1450dc098b35SAndi Kleen printed++; 1451dc098b35SAndi Kleen } 1452dfc431cbSArnaldo Carvalho de Melo if (printed && pager_in_use()) 1453dc098b35SAndi Kleen printf("\n"); 14547e4772dcSArnaldo Carvalho de Melo out_free: 14557e4772dcSArnaldo Carvalho de Melo for (j = 0; j < len; j++) 145608e60ed1SAndi Kleen zfree(&aliases[j].name); 14577e4772dcSArnaldo Carvalho de Melo zfree(&aliases); 14587e4772dcSArnaldo Carvalho de Melo return; 14597e4772dcSArnaldo Carvalho de Melo 14607e4772dcSArnaldo Carvalho de Melo out_enomem: 14617e4772dcSArnaldo Carvalho de Melo printf("FATAL: not enough memory to print PMU events\n"); 14627e4772dcSArnaldo Carvalho de Melo if (aliases) 14637e4772dcSArnaldo Carvalho de Melo goto out_free; 1464dc098b35SAndi Kleen } 14654cabc3d1SAndi Kleen 14664cabc3d1SAndi Kleen bool pmu_have_event(const char *pname, const char *name) 14674cabc3d1SAndi Kleen { 14684cabc3d1SAndi Kleen struct perf_pmu *pmu; 14694cabc3d1SAndi Kleen struct perf_pmu_alias *alias; 14704cabc3d1SAndi Kleen 14714cabc3d1SAndi Kleen pmu = NULL; 14724cabc3d1SAndi Kleen while ((pmu = perf_pmu__scan(pmu)) != NULL) { 14734cabc3d1SAndi Kleen if (strcmp(pname, pmu->name)) 14744cabc3d1SAndi Kleen continue; 14754cabc3d1SAndi Kleen list_for_each_entry(alias, &pmu->aliases, list) 14764cabc3d1SAndi Kleen if (!strcmp(alias->name, name)) 14774cabc3d1SAndi Kleen return true; 14784cabc3d1SAndi Kleen } 14794cabc3d1SAndi Kleen return false; 14804cabc3d1SAndi Kleen } 14817d4bdab5SAdrian Hunter 14827d4bdab5SAdrian Hunter static FILE *perf_pmu__open_file(struct perf_pmu *pmu, const char *name) 14837d4bdab5SAdrian Hunter { 14847d4bdab5SAdrian Hunter struct stat st; 14857d4bdab5SAdrian Hunter char path[PATH_MAX]; 14867d4bdab5SAdrian Hunter const char *sysfs; 14877d4bdab5SAdrian Hunter 14887d4bdab5SAdrian Hunter sysfs = sysfs__mountpoint(); 14897d4bdab5SAdrian Hunter if (!sysfs) 14907d4bdab5SAdrian Hunter return NULL; 14917d4bdab5SAdrian Hunter 14927d4bdab5SAdrian Hunter snprintf(path, PATH_MAX, 14937d4bdab5SAdrian Hunter "%s" EVENT_SOURCE_DEVICE_PATH "%s/%s", sysfs, pmu->name, name); 14947d4bdab5SAdrian Hunter 14957d4bdab5SAdrian Hunter if (stat(path, &st) < 0) 14967d4bdab5SAdrian Hunter return NULL; 14977d4bdab5SAdrian Hunter 14987d4bdab5SAdrian Hunter return fopen(path, "r"); 14997d4bdab5SAdrian Hunter } 15007d4bdab5SAdrian Hunter 15017d4bdab5SAdrian Hunter int perf_pmu__scan_file(struct perf_pmu *pmu, const char *name, const char *fmt, 15027d4bdab5SAdrian Hunter ...) 15037d4bdab5SAdrian Hunter { 15047d4bdab5SAdrian Hunter va_list args; 15057d4bdab5SAdrian Hunter FILE *file; 15067d4bdab5SAdrian Hunter int ret = EOF; 15077d4bdab5SAdrian Hunter 15087d4bdab5SAdrian Hunter va_start(args, fmt); 15097d4bdab5SAdrian Hunter file = perf_pmu__open_file(pmu, name); 15107d4bdab5SAdrian Hunter if (file) { 15117d4bdab5SAdrian Hunter ret = vfscanf(file, fmt, args); 15127d4bdab5SAdrian Hunter fclose(file); 15137d4bdab5SAdrian Hunter } 15147d4bdab5SAdrian Hunter va_end(args); 15157d4bdab5SAdrian Hunter return ret; 15167d4bdab5SAdrian Hunter } 1517