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-rw-r--r--tools/perf/util/trace-event-parse.c214
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..9634f0ae5
--- /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)(sizeof(flags)/sizeof(flags[0])); i++)
+ if (strcmp(flags[i].name, flag) == 0)
+ return flags[i].value;
+
+ return 0;
+}