1 // SPDX-License-Identifier: GPL-2.0 2 /* Display a menu with individual samples to browse with perf script */ 3 #include "hist.h" 4 #include "evsel.h" 5 #include "hists.h" 6 #include "sort.h" 7 #include "config.h" 8 #include "time-utils.h" 9 #include "../util.h" 10 #include "../../util/util.h" // perf_exe() 11 #include "../../perf.h" 12 #include <stdlib.h> 13 #include <string.h> 14 #include <linux/time64.h> 15 #include <linux/zalloc.h> 16 17 static u64 context_len = 10 * NSEC_PER_MSEC; 18 19 static int res_sample_config(const char *var, const char *value, void *data __maybe_unused) 20 { 21 if (!strcmp(var, "samples.context")) 22 return perf_config_u64(&context_len, var, value); 23 return 0; 24 } 25 26 void res_sample_init(void) 27 { 28 perf_config(res_sample_config, NULL); 29 } 30 31 int res_sample_browse(struct res_sample *res_samples, int num_res, 32 struct evsel *evsel, enum rstype rstype) 33 { 34 char **names; 35 int i, n; 36 int choice; 37 char *cmd; 38 char pbuf[256], tidbuf[32], cpubuf[32]; 39 const char *perf = perf_exe(pbuf, sizeof pbuf); 40 char trange[128], tsample[64]; 41 struct res_sample *r; 42 char extra_format[256]; 43 44 names = calloc(num_res, sizeof(char *)); 45 if (!names) 46 return -1; 47 for (i = 0; i < num_res; i++) { 48 char tbuf[64]; 49 50 timestamp__scnprintf_nsec(res_samples[i].time, tbuf, sizeof tbuf); 51 if (asprintf(&names[i], "%s: CPU %d tid %d", tbuf, 52 res_samples[i].cpu, res_samples[i].tid) < 0) { 53 while (--i >= 0) 54 zfree(&names[i]); 55 free(names); 56 return -1; 57 } 58 } 59 choice = ui__popup_menu(num_res, names, NULL); 60 for (i = 0; i < num_res; i++) 61 zfree(&names[i]); 62 free(names); 63 64 if (choice < 0 || choice >= num_res) 65 return -1; 66 r = &res_samples[choice]; 67 68 n = timestamp__scnprintf_nsec(r->time - context_len, trange, sizeof trange); 69 trange[n++] = ','; 70 timestamp__scnprintf_nsec(r->time + context_len, trange + n, sizeof trange - n); 71 72 timestamp__scnprintf_nsec(r->time, tsample, sizeof tsample); 73 74 attr_to_script(extra_format, &evsel->core.attr); 75 76 if (asprintf(&cmd, "%s script %s%s --time %s %s%s %s%s --ns %s %s %s %s %s | less +/%s", 77 perf, 78 input_name ? "-i " : "", 79 input_name ? input_name : "", 80 trange, 81 r->cpu >= 0 ? "--cpu " : "", 82 r->cpu >= 0 ? (sprintf(cpubuf, "%d", r->cpu), cpubuf) : "", 83 r->tid ? "--tid " : "", 84 r->tid ? (sprintf(tidbuf, "%d", r->tid), tidbuf) : "", 85 extra_format, 86 rstype == A_ASM ? "-F +disasm" : 87 rstype == A_SOURCE ? "-F +srcline,+srccode" : "", 88 symbol_conf.inline_name ? "--inline" : "", 89 "--show-lost-events ", 90 r->tid ? "--show-switch-events --show-task-events " : "", 91 tsample) < 0) 92 return -1; 93 run_script(cmd); 94 free(cmd); 95 return 0; 96 } 97