diff options
Diffstat (limited to 'kernel/tools/perf/util/trace-event-parse.c')
| -rw-r--r-- | kernel/tools/perf/util/trace-event-parse.c | 269 |
1 files changed, 269 insertions, 0 deletions
diff --git a/kernel/tools/perf/util/trace-event-parse.c b/kernel/tools/perf/util/trace-event-parse.c new file mode 100644 index 000000000..25d6c737b --- /dev/null +++ b/kernel/tools/perf/util/trace-event-parse.c @@ -0,0 +1,269 @@ +/* + * Copyright (C) 2009, Steven Rostedt <srostedt@redhat.com> + * + * ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; version 2 of the License (not later!) + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, write to the Free Software + * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA + * + * ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ + */ +#include <stdio.h> +#include <stdlib.h> +#include <string.h> +#include <ctype.h> +#include <errno.h> + +#include "../perf.h" +#include "util.h" +#include "trace-event.h" + +static int get_common_field(struct scripting_context *context, + int *offset, int *size, const char *type) +{ + struct pevent *pevent = context->pevent; + struct event_format *event; + struct format_field *field; + + if (!*size) { + if (!pevent->events) + return 0; + + event = pevent->events[0]; + field = pevent_find_common_field(event, type); + if (!field) + return 0; + *offset = field->offset; + *size = field->size; + } + + return pevent_read_number(pevent, context->event_data + *offset, *size); +} + +int common_lock_depth(struct scripting_context *context) +{ + static int offset; + static int size; + int ret; + + ret = get_common_field(context, &size, &offset, + "common_lock_depth"); + if (ret < 0) + return -1; + + return ret; +} + +int common_flags(struct scripting_context *context) +{ + static int offset; + static int size; + int ret; + + ret = get_common_field(context, &size, &offset, + "common_flags"); + if (ret < 0) + return -1; + + return ret; +} + +int common_pc(struct scripting_context *context) +{ + static int offset; + static int size; + int ret; + + ret = get_common_field(context, &size, &offset, + "common_preempt_count"); + if (ret < 0) + return -1; + + return ret; +} + +unsigned long long +raw_field_value(struct event_format *event, const char *name, void *data) +{ + struct format_field *field; + unsigned long long val; + + field = pevent_find_any_field(event, name); + if (!field) + return 0ULL; + + pevent_read_number_field(field, data, &val); + + return val; +} + +unsigned long long read_size(struct event_format *event, void *ptr, int size) +{ + return pevent_read_number(event->pevent, ptr, size); +} + +void event_format__fprintf(struct event_format *event, + int cpu, void *data, int size, FILE *fp) +{ + struct pevent_record record; + struct trace_seq s; + + memset(&record, 0, sizeof(record)); + record.cpu = cpu; + record.size = size; + record.data = data; + + trace_seq_init(&s); + pevent_event_info(&s, event, &record); + trace_seq_do_fprintf(&s, fp); + trace_seq_destroy(&s); +} + +void event_format__print(struct event_format *event, + int cpu, void *data, int size) +{ + return event_format__fprintf(event, cpu, data, size, stdout); +} + +void parse_proc_kallsyms(struct pevent *pevent, + char *file, unsigned int size __maybe_unused) +{ + unsigned long long addr; + char *func; + char *line; + char *next = NULL; + char *addr_str; + char *mod; + char *fmt = NULL; + + line = strtok_r(file, "\n", &next); + while (line) { + mod = NULL; + addr_str = strtok_r(line, " ", &fmt); + addr = strtoull(addr_str, NULL, 16); + /* skip character */ + strtok_r(NULL, " ", &fmt); + func = strtok_r(NULL, "\t", &fmt); + mod = strtok_r(NULL, "]", &fmt); + /* truncate the extra '[' */ + if (mod) + mod = mod + 1; + + pevent_register_function(pevent, func, addr, mod); + + line = strtok_r(NULL, "\n", &next); + } +} + +void parse_ftrace_printk(struct pevent *pevent, + char *file, unsigned int size __maybe_unused) +{ + unsigned long long addr; + char *printk; + char *line; + char *next = NULL; + char *addr_str; + char *fmt; + + line = strtok_r(file, "\n", &next); + while (line) { + addr_str = strtok_r(line, ":", &fmt); + if (!addr_str) { + warning("printk format with empty entry"); + break; + } + addr = strtoull(addr_str, NULL, 16); + /* fmt still has a space, skip it */ + printk = strdup(fmt+1); + line = strtok_r(NULL, "\n", &next); + pevent_register_print_string(pevent, printk, addr); + } +} + +int parse_ftrace_file(struct pevent *pevent, char *buf, unsigned long size) +{ + return pevent_parse_event(pevent, buf, size, "ftrace"); +} + +int parse_event_file(struct pevent *pevent, + char *buf, unsigned long size, char *sys) +{ + return pevent_parse_event(pevent, buf, size, sys); +} + +struct event_format *trace_find_next_event(struct pevent *pevent, + struct event_format *event) +{ + static int idx; + + if (!pevent || !pevent->events) + return NULL; + + if (!event) { + idx = 0; + return pevent->events[0]; + } + + if (idx < pevent->nr_events && event == pevent->events[idx]) { + idx++; + if (idx == pevent->nr_events) + return NULL; + return pevent->events[idx]; + } + + for (idx = 1; idx < pevent->nr_events; idx++) { + if (event == pevent->events[idx - 1]) + return pevent->events[idx]; + } + return NULL; +} + +struct flag { + const char *name; + unsigned long long value; +}; + +static const struct flag flags[] = { + { "HI_SOFTIRQ", 0 }, + { "TIMER_SOFTIRQ", 1 }, + { "NET_TX_SOFTIRQ", 2 }, + { "NET_RX_SOFTIRQ", 3 }, + { "BLOCK_SOFTIRQ", 4 }, + { "BLOCK_IOPOLL_SOFTIRQ", 5 }, + { "TASKLET_SOFTIRQ", 6 }, + { "SCHED_SOFTIRQ", 7 }, + { "HRTIMER_SOFTIRQ", 8 }, + { "RCU_SOFTIRQ", 9 }, + + { "HRTIMER_NORESTART", 0 }, + { "HRTIMER_RESTART", 1 }, +}; + +unsigned long long eval_flag(const char *flag) +{ + int i; + + /* + * Some flags in the format files do not get converted. + * If the flag is not numeric, see if it is something that + * we already know about. + */ + if (isdigit(flag[0])) + return strtoull(flag, NULL, 0); + + for (i = 0; i < (int)(sizeof(flags)/sizeof(flags[0])); i++) + if (strcmp(flags[i].name, flag) == 0) + return flags[i].value; + + return 0; +} |