diff options
Diffstat (limited to '')
| -rw-r--r-- | tools/perf/util/trace-event-parse.c | 214 |
1 files changed, 214 insertions, 0 deletions
diff --git a/tools/perf/util/trace-event-parse.c b/tools/perf/util/trace-event-parse.c new file mode 100644 index 000000000..c9c83a406 --- /dev/null +++ b/tools/perf/util/trace-event-parse.c @@ -0,0 +1,214 @@ +// SPDX-License-Identifier: GPL-2.0-only +/* + * Copyright (C) 2009, Steven Rostedt <srostedt@redhat.com> + */ +#include <stdio.h> +#include <stdlib.h> +#include <string.h> +#include <errno.h> + +#include "debug.h" +#include "trace-event.h" + +#include <linux/ctype.h> + +static int get_common_field(struct scripting_context *context, + int *offset, int *size, const char *type) +{ + struct tep_handle *pevent = context->pevent; + struct tep_event *event; + struct tep_format_field *field; + + if (!*size) { + + event = tep_get_first_event(pevent); + if (!event) + return 0; + + field = tep_find_common_field(event, type); + if (!field) + return 0; + *offset = field->offset; + *size = field->size; + } + + return tep_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 tep_event *event, const char *name, void *data) +{ + struct tep_format_field *field; + unsigned long long val; + + field = tep_find_any_field(event, name); + if (!field) + return 0ULL; + + tep_read_number_field(field, data, &val); + + return val; +} + +unsigned long long read_size(struct tep_event *event, void *ptr, int size) +{ + return tep_read_number(event->tep, ptr, size); +} + +void event_format__fprintf(struct tep_event *event, + int cpu, void *data, int size, FILE *fp) +{ + struct tep_record record; + struct trace_seq s; + + memset(&record, 0, sizeof(record)); + record.cpu = cpu; + record.size = size; + record.data = data; + + trace_seq_init(&s); + tep_print_event(event->tep, &s, &record, "%s", TEP_PRINT_INFO); + trace_seq_do_fprintf(&s, fp); + trace_seq_destroy(&s); +} + +void event_format__print(struct tep_event *event, + int cpu, void *data, int size) +{ + return event_format__fprintf(event, cpu, data, size, stdout); +} + +void parse_ftrace_printk(struct tep_handle *pevent, + char *file, unsigned int size __maybe_unused) +{ + unsigned long long addr; + char *printk; + char *line; + char *next = NULL; + char *addr_str; + char *fmt = NULL; + + line = strtok_r(file, "\n", &next); + while (line) { + addr_str = strtok_r(line, ":", &fmt); + if (!addr_str) { + pr_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); + tep_register_print_string(pevent, printk, addr); + free(printk); + } +} + +void parse_saved_cmdline(struct tep_handle *pevent, + char *file, unsigned int size __maybe_unused) +{ + char comm[17]; /* Max comm length in the kernel is 16. */ + char *line; + char *next = NULL; + int pid; + + line = strtok_r(file, "\n", &next); + while (line) { + if (sscanf(line, "%d %16s", &pid, comm) == 2) + tep_register_comm(pevent, comm, pid); + line = strtok_r(NULL, "\n", &next); + } +} + +int parse_ftrace_file(struct tep_handle *pevent, char *buf, unsigned long size) +{ + return tep_parse_event(pevent, buf, size, "ftrace"); +} + +int parse_event_file(struct tep_handle *pevent, + char *buf, unsigned long size, char *sys) +{ + return tep_parse_event(pevent, buf, size, sys); +} + +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 }, + { "IRQ_POLL_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)(ARRAY_SIZE(flags)); i++) + if (strcmp(flags[i].name, flag) == 0) + return flags[i].value; + + return 0; +} |