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214 lines
4.4 KiB
214 lines
4.4 KiB
// SPDX-License-Identifier: GPL-2.0-only |
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/* |
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* Copyright (C) 2009, Steven Rostedt <[email protected]> |
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*/ |
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#include <stdio.h> |
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#include <stdlib.h> |
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#include <string.h> |
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#include <errno.h> |
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#include "debug.h" |
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#include "trace-event.h" |
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#include <linux/ctype.h> |
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static int get_common_field(struct scripting_context *context, |
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int *offset, int *size, const char *type) |
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{ |
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struct tep_handle *pevent = context->pevent; |
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struct tep_event *event; |
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struct tep_format_field *field; |
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if (!*size) { |
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event = tep_get_first_event(pevent); |
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if (!event) |
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return 0; |
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field = tep_find_common_field(event, type); |
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if (!field) |
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return 0; |
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*offset = field->offset; |
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*size = field->size; |
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} |
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return tep_read_number(pevent, context->event_data + *offset, *size); |
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} |
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int common_lock_depth(struct scripting_context *context) |
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{ |
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static int offset; |
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static int size; |
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int ret; |
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ret = get_common_field(context, &size, &offset, |
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"common_lock_depth"); |
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if (ret < 0) |
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return -1; |
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return ret; |
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} |
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int common_flags(struct scripting_context *context) |
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{ |
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static int offset; |
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static int size; |
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int ret; |
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ret = get_common_field(context, &size, &offset, |
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"common_flags"); |
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if (ret < 0) |
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return -1; |
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return ret; |
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} |
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int common_pc(struct scripting_context *context) |
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{ |
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static int offset; |
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static int size; |
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int ret; |
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ret = get_common_field(context, &size, &offset, |
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"common_preempt_count"); |
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if (ret < 0) |
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return -1; |
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return ret; |
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} |
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unsigned long long |
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raw_field_value(struct tep_event *event, const char *name, void *data) |
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{ |
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struct tep_format_field *field; |
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unsigned long long val; |
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field = tep_find_any_field(event, name); |
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if (!field) |
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return 0ULL; |
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tep_read_number_field(field, data, &val); |
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return val; |
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} |
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unsigned long long read_size(struct tep_event *event, void *ptr, int size) |
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{ |
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return tep_read_number(event->tep, ptr, size); |
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} |
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void event_format__fprintf(struct tep_event *event, |
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int cpu, void *data, int size, FILE *fp) |
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{ |
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struct tep_record record; |
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struct trace_seq s; |
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memset(&record, 0, sizeof(record)); |
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record.cpu = cpu; |
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record.size = size; |
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record.data = data; |
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trace_seq_init(&s); |
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tep_print_event(event->tep, &s, &record, "%s", TEP_PRINT_INFO); |
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trace_seq_do_fprintf(&s, fp); |
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trace_seq_destroy(&s); |
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} |
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void event_format__print(struct tep_event *event, |
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int cpu, void *data, int size) |
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{ |
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return event_format__fprintf(event, cpu, data, size, stdout); |
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} |
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void parse_ftrace_printk(struct tep_handle *pevent, |
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char *file, unsigned int size __maybe_unused) |
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{ |
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unsigned long long addr; |
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char *printk; |
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char *line; |
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char *next = NULL; |
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char *addr_str; |
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char *fmt = NULL; |
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line = strtok_r(file, "\n", &next); |
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while (line) { |
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addr_str = strtok_r(line, ":", &fmt); |
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if (!addr_str) { |
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pr_warning("printk format with empty entry"); |
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break; |
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} |
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addr = strtoull(addr_str, NULL, 16); |
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/* fmt still has a space, skip it */ |
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printk = strdup(fmt+1); |
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line = strtok_r(NULL, "\n", &next); |
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tep_register_print_string(pevent, printk, addr); |
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free(printk); |
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} |
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} |
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void parse_saved_cmdline(struct tep_handle *pevent, |
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char *file, unsigned int size __maybe_unused) |
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{ |
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char comm[17]; /* Max comm length in the kernel is 16. */ |
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char *line; |
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char *next = NULL; |
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int pid; |
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line = strtok_r(file, "\n", &next); |
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while (line) { |
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if (sscanf(line, "%d %16s", &pid, comm) == 2) |
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tep_register_comm(pevent, comm, pid); |
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line = strtok_r(NULL, "\n", &next); |
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} |
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} |
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int parse_ftrace_file(struct tep_handle *pevent, char *buf, unsigned long size) |
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{ |
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return tep_parse_event(pevent, buf, size, "ftrace"); |
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} |
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int parse_event_file(struct tep_handle *pevent, |
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char *buf, unsigned long size, char *sys) |
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{ |
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return tep_parse_event(pevent, buf, size, sys); |
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} |
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struct flag { |
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const char *name; |
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unsigned long long value; |
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}; |
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static const struct flag flags[] = { |
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{ "HI_SOFTIRQ", 0 }, |
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{ "TIMER_SOFTIRQ", 1 }, |
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{ "NET_TX_SOFTIRQ", 2 }, |
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{ "NET_RX_SOFTIRQ", 3 }, |
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{ "BLOCK_SOFTIRQ", 4 }, |
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{ "IRQ_POLL_SOFTIRQ", 5 }, |
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{ "TASKLET_SOFTIRQ", 6 }, |
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{ "SCHED_SOFTIRQ", 7 }, |
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{ "HRTIMER_SOFTIRQ", 8 }, |
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{ "RCU_SOFTIRQ", 9 }, |
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{ "HRTIMER_NORESTART", 0 }, |
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{ "HRTIMER_RESTART", 1 }, |
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}; |
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unsigned long long eval_flag(const char *flag) |
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{ |
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int i; |
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/* |
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* Some flags in the format files do not get converted. |
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* If the flag is not numeric, see if it is something that |
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* we already know about. |
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*/ |
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if (isdigit(flag[0])) |
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return strtoull(flag, NULL, 0); |
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for (i = 0; i < (int)(sizeof(flags)/sizeof(flags[0])); i++) |
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if (strcmp(flags[i].name, flag) == 0) |
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return flags[i].value; |
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return 0; |
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}
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