15a8e0ff9SThomas Gleixner // SPDX-License-Identifier: GPL-2.0-only 2aaf045f7SSteven Rostedt /* 3aaf045f7SSteven Rostedt * Copyright (C) 2009, Steven Rostedt <srostedt@redhat.com> 4aaf045f7SSteven Rostedt */ 5aaf045f7SSteven Rostedt #include <stdio.h> 6aaf045f7SSteven Rostedt #include <stdlib.h> 7aaf045f7SSteven Rostedt #include <string.h> 8aaf045f7SSteven Rostedt #include <errno.h> 9aaf045f7SSteven Rostedt 10d2a74d53SArnaldo Carvalho de Melo #include "debug.h" 11ea4010d1SSteven Rostedt #include "trace-event.h" 12ea4010d1SSteven Rostedt 133052ba56SArnaldo Carvalho de Melo #include <linux/ctype.h> 143d689ed6SArnaldo Carvalho de Melo 15aaf045f7SSteven Rostedt static int get_common_field(struct scripting_context *context, 16aaf045f7SSteven Rostedt int *offset, int *size, const char *type) 177397d80dSTom Zanussi { 18096177a8STzvetomir Stoyanov (VMware) struct tep_handle *pevent = context->pevent; 1997fbf3f0STzvetomir Stoyanov struct tep_event *event; 202c92f982STzvetomir Stoyanov (VMware) struct tep_format_field *field; 21aaf045f7SSteven Rostedt 22aaf045f7SSteven Rostedt if (!*size) { 23bb3dd7e7STzvetomir Stoyanov 24bb3dd7e7STzvetomir Stoyanov event = tep_get_first_event(pevent); 25bb3dd7e7STzvetomir Stoyanov if (!event) 26aaf045f7SSteven Rostedt return 0; 27aaf045f7SSteven Rostedt 28af85cd19STzvetomir Stoyanov (VMware) field = tep_find_common_field(event, type); 29aaf045f7SSteven Rostedt if (!field) 30aaf045f7SSteven Rostedt return 0; 31aaf045f7SSteven Rostedt *offset = field->offset; 32aaf045f7SSteven Rostedt *size = field->size; 33aaf045f7SSteven Rostedt } 34aaf045f7SSteven Rostedt 3559c1baeeSTzvetomir Stoyanov (VMware) return tep_read_number(pevent, context->event_data + *offset, *size); 367397d80dSTom Zanussi } 377397d80dSTom Zanussi 387397d80dSTom Zanussi int common_lock_depth(struct scripting_context *context) 397397d80dSTom Zanussi { 40aaf045f7SSteven Rostedt static int offset; 41aaf045f7SSteven Rostedt static int size; 42aaf045f7SSteven Rostedt int ret; 43aaf045f7SSteven Rostedt 44aaf045f7SSteven Rostedt ret = get_common_field(context, &size, &offset, 45aaf045f7SSteven Rostedt "common_lock_depth"); 46aaf045f7SSteven Rostedt if (ret < 0) 47aaf045f7SSteven Rostedt return -1; 48aaf045f7SSteven Rostedt 49aaf045f7SSteven Rostedt return ret; 50aaf045f7SSteven Rostedt } 51aaf045f7SSteven Rostedt 52aaf045f7SSteven Rostedt int common_flags(struct scripting_context *context) 53aaf045f7SSteven Rostedt { 54aaf045f7SSteven Rostedt static int offset; 55aaf045f7SSteven Rostedt static int size; 56aaf045f7SSteven Rostedt int ret; 57aaf045f7SSteven Rostedt 58aaf045f7SSteven Rostedt ret = get_common_field(context, &size, &offset, 59aaf045f7SSteven Rostedt "common_flags"); 60aaf045f7SSteven Rostedt if (ret < 0) 61aaf045f7SSteven Rostedt return -1; 62aaf045f7SSteven Rostedt 63aaf045f7SSteven Rostedt return ret; 64aaf045f7SSteven Rostedt } 65aaf045f7SSteven Rostedt 66aaf045f7SSteven Rostedt int common_pc(struct scripting_context *context) 67aaf045f7SSteven Rostedt { 68aaf045f7SSteven Rostedt static int offset; 69aaf045f7SSteven Rostedt static int size; 70aaf045f7SSteven Rostedt int ret; 71aaf045f7SSteven Rostedt 72aaf045f7SSteven Rostedt ret = get_common_field(context, &size, &offset, 73aaf045f7SSteven Rostedt "common_preempt_count"); 74aaf045f7SSteven Rostedt if (ret < 0) 75aaf045f7SSteven Rostedt return -1; 76aaf045f7SSteven Rostedt 77aaf045f7SSteven Rostedt return ret; 78aaf045f7SSteven Rostedt } 79aaf045f7SSteven Rostedt 80aaf045f7SSteven Rostedt unsigned long long 8197fbf3f0STzvetomir Stoyanov raw_field_value(struct tep_event *event, const char *name, void *data) 82aaf045f7SSteven Rostedt { 832c92f982STzvetomir Stoyanov (VMware) struct tep_format_field *field; 84aaf045f7SSteven Rostedt unsigned long long val; 85aaf045f7SSteven Rostedt 86af85cd19STzvetomir Stoyanov (VMware) field = tep_find_any_field(event, name); 87aaf045f7SSteven Rostedt if (!field) 88aaf045f7SSteven Rostedt return 0ULL; 89aaf045f7SSteven Rostedt 9059c1baeeSTzvetomir Stoyanov (VMware) tep_read_number_field(field, data, &val); 91aaf045f7SSteven Rostedt 92aaf045f7SSteven Rostedt return val; 93aaf045f7SSteven Rostedt } 94aaf045f7SSteven Rostedt 9597fbf3f0STzvetomir Stoyanov unsigned long long read_size(struct tep_event *event, void *ptr, int size) 96aaf045f7SSteven Rostedt { 9769769ce1STzvetomir Stoyanov return tep_read_number(event->tep, ptr, size); 98aaf045f7SSteven Rostedt } 99aaf045f7SSteven Rostedt 10097fbf3f0STzvetomir Stoyanov void event_format__fprintf(struct tep_event *event, 101aa1aac17SArnaldo Carvalho de Melo int cpu, void *data, int size, FILE *fp) 102aaf045f7SSteven Rostedt { 103cbc49b25STzvetomir Stoyanov (VMware) struct tep_record record; 104aaf045f7SSteven Rostedt struct trace_seq s; 105aaf045f7SSteven Rostedt 106aaf045f7SSteven Rostedt memset(&record, 0, sizeof(record)); 107aaf045f7SSteven Rostedt record.cpu = cpu; 108aaf045f7SSteven Rostedt record.size = size; 109aaf045f7SSteven Rostedt record.data = data; 110aaf045f7SSteven Rostedt 111aaf045f7SSteven Rostedt trace_seq_init(&s); 11238847db9STzvetomir Stoyanov tep_print_event(event->tep, &s, &record, "%s", TEP_PRINT_INFO); 113aa1aac17SArnaldo Carvalho de Melo trace_seq_do_fprintf(&s, fp); 114b58f608eSJiri Olsa trace_seq_destroy(&s); 115aaf045f7SSteven Rostedt } 116aaf045f7SSteven Rostedt 11797fbf3f0STzvetomir Stoyanov void event_format__print(struct tep_event *event, 118aa1aac17SArnaldo Carvalho de Melo int cpu, void *data, int size) 119aa1aac17SArnaldo Carvalho de Melo { 120aa1aac17SArnaldo Carvalho de Melo return event_format__fprintf(event, cpu, data, size, stdout); 121aa1aac17SArnaldo Carvalho de Melo } 122aa1aac17SArnaldo Carvalho de Melo 123096177a8STzvetomir Stoyanov (VMware) void parse_ftrace_printk(struct tep_handle *pevent, 1241d037ca1SIrina Tirdea char *file, unsigned int size __maybe_unused) 125aaf045f7SSteven Rostedt { 126aaf045f7SSteven Rostedt unsigned long long addr; 127aaf045f7SSteven Rostedt char *printk; 128aaf045f7SSteven Rostedt char *line; 129aaf045f7SSteven Rostedt char *next = NULL; 130aaf045f7SSteven Rostedt char *addr_str; 1315bcaaca3SMartin Liška char *fmt = NULL; 132aaf045f7SSteven Rostedt 133aaf045f7SSteven Rostedt line = strtok_r(file, "\n", &next); 134aaf045f7SSteven Rostedt while (line) { 135aaf045f7SSteven Rostedt addr_str = strtok_r(line, ":", &fmt); 136aaf045f7SSteven Rostedt if (!addr_str) { 137d2a74d53SArnaldo Carvalho de Melo pr_warning("printk format with empty entry"); 138aaf045f7SSteven Rostedt break; 139aaf045f7SSteven Rostedt } 140aaf045f7SSteven Rostedt addr = strtoull(addr_str, NULL, 16); 141aaf045f7SSteven Rostedt /* fmt still has a space, skip it */ 142aaf045f7SSteven Rostedt printk = strdup(fmt+1); 143aaf045f7SSteven Rostedt line = strtok_r(NULL, "\n", &next); 14413a41890STzvetomir Stoyanov (VMware) tep_register_print_string(pevent, printk, addr); 1459c8a182eSSanskriti Sharma free(printk); 146aaf045f7SSteven Rostedt } 147aaf045f7SSteven Rostedt } 148aaf045f7SSteven Rostedt 149096177a8STzvetomir Stoyanov (VMware) void parse_saved_cmdline(struct tep_handle *pevent, 150cd4ceb63SNamhyung Kim char *file, unsigned int size __maybe_unused) 151cd4ceb63SNamhyung Kim { 152c9f23d2bSChris Phlipot char comm[17]; /* Max comm length in the kernel is 16. */ 153cd4ceb63SNamhyung Kim char *line; 154cd4ceb63SNamhyung Kim char *next = NULL; 155cd4ceb63SNamhyung Kim int pid; 156cd4ceb63SNamhyung Kim 157cd4ceb63SNamhyung Kim line = strtok_r(file, "\n", &next); 158cd4ceb63SNamhyung Kim while (line) { 159c9f23d2bSChris Phlipot if (sscanf(line, "%d %16s", &pid, comm) == 2) 16013a41890STzvetomir Stoyanov (VMware) tep_register_comm(pevent, comm, pid); 161cd4ceb63SNamhyung Kim line = strtok_r(NULL, "\n", &next); 162cd4ceb63SNamhyung Kim } 163cd4ceb63SNamhyung Kim } 164cd4ceb63SNamhyung Kim 165096177a8STzvetomir Stoyanov (VMware) int parse_ftrace_file(struct tep_handle *pevent, char *buf, unsigned long size) 166aaf045f7SSteven Rostedt { 167c60167c1STzvetomir Stoyanov (VMware) return tep_parse_event(pevent, buf, size, "ftrace"); 168aaf045f7SSteven Rostedt } 169aaf045f7SSteven Rostedt 170096177a8STzvetomir Stoyanov (VMware) int parse_event_file(struct tep_handle *pevent, 171da378962SArnaldo Carvalho de Melo char *buf, unsigned long size, char *sys) 172aaf045f7SSteven Rostedt { 173c60167c1STzvetomir Stoyanov (VMware) return tep_parse_event(pevent, buf, size, sys); 174aaf045f7SSteven Rostedt } 175aaf045f7SSteven Rostedt 17697fbf3f0STzvetomir Stoyanov struct tep_event *trace_find_next_event(struct tep_handle *pevent, 17797fbf3f0STzvetomir Stoyanov struct tep_event *event) 178aaf045f7SSteven Rostedt { 179aaf045f7SSteven Rostedt static int idx; 180bb3dd7e7STzvetomir Stoyanov int events_count; 18197fbf3f0STzvetomir Stoyanov struct tep_event *all_events; 182aaf045f7SSteven Rostedt 183bb3dd7e7STzvetomir Stoyanov all_events = tep_get_first_event(pevent); 184bb3dd7e7STzvetomir Stoyanov events_count = tep_get_events_count(pevent); 185bb3dd7e7STzvetomir Stoyanov if (!pevent || !all_events || events_count < 1) 186aaf045f7SSteven Rostedt return NULL; 187aaf045f7SSteven Rostedt 188aaf045f7SSteven Rostedt if (!event) { 189aaf045f7SSteven Rostedt idx = 0; 190bb3dd7e7STzvetomir Stoyanov return all_events; 191aaf045f7SSteven Rostedt } 192aaf045f7SSteven Rostedt 193bb3dd7e7STzvetomir Stoyanov if (idx < events_count && event == (all_events + idx)) { 194aaf045f7SSteven Rostedt idx++; 195bb3dd7e7STzvetomir Stoyanov if (idx == events_count) 196aaf045f7SSteven Rostedt return NULL; 197bb3dd7e7STzvetomir Stoyanov return (all_events + idx); 198aaf045f7SSteven Rostedt } 199aaf045f7SSteven Rostedt 200bb3dd7e7STzvetomir Stoyanov for (idx = 1; idx < events_count; idx++) { 201bb3dd7e7STzvetomir Stoyanov if (event == (all_events + (idx - 1))) 202bb3dd7e7STzvetomir Stoyanov return (all_events + idx); 203aaf045f7SSteven Rostedt } 204aaf045f7SSteven Rostedt return NULL; 205aaf045f7SSteven Rostedt } 206aaf045f7SSteven Rostedt 207aaf045f7SSteven Rostedt struct flag { 208aaf045f7SSteven Rostedt const char *name; 209aaf045f7SSteven Rostedt unsigned long long value; 210aaf045f7SSteven Rostedt }; 211aaf045f7SSteven Rostedt 212aaf045f7SSteven Rostedt static const struct flag flags[] = { 213aaf045f7SSteven Rostedt { "HI_SOFTIRQ", 0 }, 214aaf045f7SSteven Rostedt { "TIMER_SOFTIRQ", 1 }, 215aaf045f7SSteven Rostedt { "NET_TX_SOFTIRQ", 2 }, 216aaf045f7SSteven Rostedt { "NET_RX_SOFTIRQ", 3 }, 217aaf045f7SSteven Rostedt { "BLOCK_SOFTIRQ", 4 }, 218511cbce2SChristoph Hellwig { "IRQ_POLL_SOFTIRQ", 5 }, 219aaf045f7SSteven Rostedt { "TASKLET_SOFTIRQ", 6 }, 220aaf045f7SSteven Rostedt { "SCHED_SOFTIRQ", 7 }, 221aaf045f7SSteven Rostedt { "HRTIMER_SOFTIRQ", 8 }, 222aaf045f7SSteven Rostedt { "RCU_SOFTIRQ", 9 }, 223aaf045f7SSteven Rostedt 224aaf045f7SSteven Rostedt { "HRTIMER_NORESTART", 0 }, 225aaf045f7SSteven Rostedt { "HRTIMER_RESTART", 1 }, 226aaf045f7SSteven Rostedt }; 227aaf045f7SSteven Rostedt 228aaf045f7SSteven Rostedt unsigned long long eval_flag(const char *flag) 229aaf045f7SSteven Rostedt { 230aaf045f7SSteven Rostedt int i; 231aaf045f7SSteven Rostedt 232aaf045f7SSteven Rostedt /* 233aaf045f7SSteven Rostedt * Some flags in the format files do not get converted. 234aaf045f7SSteven Rostedt * If the flag is not numeric, see if it is something that 235aaf045f7SSteven Rostedt * we already know about. 236aaf045f7SSteven Rostedt */ 237aaf045f7SSteven Rostedt if (isdigit(flag[0])) 238aaf045f7SSteven Rostedt return strtoull(flag, NULL, 0); 239aaf045f7SSteven Rostedt 240aaf045f7SSteven Rostedt for (i = 0; i < (int)(sizeof(flags)/sizeof(flags[0])); i++) 241aaf045f7SSteven Rostedt if (strcmp(flags[i].name, flag) == 0) 242aaf045f7SSteven Rostedt return flags[i].value; 243aaf045f7SSteven Rostedt 244aaf045f7SSteven Rostedt return 0; 2457397d80dSTom Zanussi } 246