1 // SPDX-License-Identifier: GPL-2.0 2 #include "../../builtin.h" 3 #include "../../perf.h" 4 #include "../../util/util.h" // perf_exe() 5 #include "../util.h" 6 #include "../../util/hist.h" 7 #include "../../util/debug.h" 8 #include "../../util/symbol.h" 9 #include "../browser.h" 10 #include "../libslang.h" 11 #include "config.h" 12 #include <linux/string.h> 13 #include <linux/zalloc.h> 14 #include <stdlib.h> 15 16 #define SCRIPT_NAMELEN 128 17 #define SCRIPT_MAX_NO 64 18 /* 19 * Usually the full path for a script is: 20 * /home/username/libexec/perf-core/scripts/python/xxx.py 21 * /home/username/libexec/perf-core/scripts/perl/xxx.pl 22 * So 256 should be long enough to contain the full path. 23 */ 24 #define SCRIPT_FULLPATH_LEN 256 25 26 struct script_config { 27 const char **names; 28 char **paths; 29 int index; 30 const char *perf; 31 char extra_format[256]; 32 }; 33 attr_to_script(char * extra_format,struct perf_event_attr * attr)34 void attr_to_script(char *extra_format, struct perf_event_attr *attr) 35 { 36 extra_format[0] = 0; 37 if (attr->read_format & PERF_FORMAT_GROUP) 38 strcat(extra_format, " -F +metric"); 39 if (attr->sample_type & PERF_SAMPLE_BRANCH_STACK) 40 strcat(extra_format, " -F +brstackinsn --xed"); 41 if (attr->sample_type & PERF_SAMPLE_REGS_INTR) 42 strcat(extra_format, " -F +iregs"); 43 if (attr->sample_type & PERF_SAMPLE_REGS_USER) 44 strcat(extra_format, " -F +uregs"); 45 if (attr->sample_type & PERF_SAMPLE_PHYS_ADDR) 46 strcat(extra_format, " -F +phys_addr"); 47 } 48 add_script_option(const char * name,const char * opt,struct script_config * c)49 static int add_script_option(const char *name, const char *opt, 50 struct script_config *c) 51 { 52 c->names[c->index] = name; 53 if (asprintf(&c->paths[c->index], 54 "%s script %s -F +metric %s %s", 55 c->perf, opt, symbol_conf.inline_name ? " --inline" : "", 56 c->extra_format) < 0) 57 return -1; 58 c->index++; 59 return 0; 60 } 61 scripts_config(const char * var,const char * value,void * data)62 static int scripts_config(const char *var, const char *value, void *data) 63 { 64 struct script_config *c = data; 65 66 if (!strstarts(var, "scripts.")) 67 return -1; 68 if (c->index >= SCRIPT_MAX_NO) 69 return -1; 70 c->names[c->index] = strdup(var + 7); 71 if (!c->names[c->index]) 72 return -1; 73 if (asprintf(&c->paths[c->index], "%s %s", value, 74 c->extra_format) < 0) 75 return -1; 76 c->index++; 77 return 0; 78 } 79 80 /* 81 * When success, will copy the full path of the selected script 82 * into the buffer pointed by script_name, and return 0. 83 * Return -1 on failure. 84 */ list_scripts(char * script_name,bool * custom,struct evsel * evsel)85 static int list_scripts(char *script_name, bool *custom, 86 struct evsel *evsel) 87 { 88 char *buf, *paths[SCRIPT_MAX_NO], *names[SCRIPT_MAX_NO]; 89 int i, num, choice; 90 int ret = 0; 91 int max_std, custom_perf; 92 char pbuf[256]; 93 const char *perf = perf_exe(pbuf, sizeof pbuf); 94 struct script_config scriptc = { 95 .names = (const char **)names, 96 .paths = paths, 97 .perf = perf 98 }; 99 100 script_name[0] = 0; 101 102 /* Preset the script name to SCRIPT_NAMELEN */ 103 buf = malloc(SCRIPT_MAX_NO * (SCRIPT_NAMELEN + SCRIPT_FULLPATH_LEN)); 104 if (!buf) 105 return -1; 106 107 if (evsel) 108 attr_to_script(scriptc.extra_format, &evsel->core.attr); 109 add_script_option("Show individual samples", "", &scriptc); 110 add_script_option("Show individual samples with assembler", "-F +disasm", 111 &scriptc); 112 add_script_option("Show individual samples with source", "-F +srcline,+srccode", 113 &scriptc); 114 perf_config(scripts_config, &scriptc); 115 custom_perf = scriptc.index; 116 add_script_option("Show samples with custom perf script arguments", "", &scriptc); 117 i = scriptc.index; 118 max_std = i; 119 120 for (; i < SCRIPT_MAX_NO; i++) { 121 names[i] = buf + (i - max_std) * (SCRIPT_NAMELEN + SCRIPT_FULLPATH_LEN); 122 paths[i] = names[i] + SCRIPT_NAMELEN; 123 } 124 125 num = find_scripts(names + max_std, paths + max_std, SCRIPT_MAX_NO - max_std, 126 SCRIPT_FULLPATH_LEN); 127 if (num < 0) 128 num = 0; 129 choice = ui__popup_menu(num + max_std, (char * const *)names, NULL); 130 if (choice < 0) { 131 ret = -1; 132 goto out; 133 } 134 if (choice == custom_perf) { 135 char script_args[50]; 136 int key = ui_browser__input_window("perf script command", 137 "Enter perf script command line (without perf script prefix)", 138 script_args, "", 0); 139 if (key != K_ENTER) { 140 ret = -1; 141 goto out; 142 } 143 sprintf(script_name, "%s script %s", perf, script_args); 144 } else if (choice < num + max_std) { 145 strcpy(script_name, paths[choice]); 146 } 147 *custom = choice >= max_std; 148 149 out: 150 free(buf); 151 for (i = 0; i < max_std; i++) 152 zfree(&paths[i]); 153 return ret; 154 } 155 run_script(char * cmd)156 void run_script(char *cmd) 157 { 158 pr_debug("Running %s\n", cmd); 159 SLang_reset_tty(); 160 if (system(cmd) < 0) 161 pr_warning("Cannot run %s\n", cmd); 162 /* 163 * SLang doesn't seem to reset the whole terminal, so be more 164 * forceful to get back to the original state. 165 */ 166 printf("\033[c\033[H\033[J"); 167 fflush(stdout); 168 SLang_init_tty(0, 0, 0); 169 SLtty_set_suspend_state(true); 170 SLsmg_refresh(); 171 } 172 script_browse(const char * script_opt,struct evsel * evsel)173 int script_browse(const char *script_opt, struct evsel *evsel) 174 { 175 char *cmd, script_name[SCRIPT_FULLPATH_LEN]; 176 bool custom = false; 177 178 memset(script_name, 0, SCRIPT_FULLPATH_LEN); 179 if (list_scripts(script_name, &custom, evsel)) 180 return -1; 181 182 if (asprintf(&cmd, "%s%s %s %s%s 2>&1 | less", 183 custom ? "perf script -s " : "", 184 script_name, 185 script_opt ? script_opt : "", 186 input_name ? "-i " : "", 187 input_name ? input_name : "") < 0) 188 return -1; 189 190 run_script(cmd); 191 free(cmd); 192 193 return 0; 194 } 195