--- /dev/null
+/*
+ * 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;
+}
Code Review / kvmfornfv.git / blobdiff