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tools lib traceevent: Add support for extracting trace_clock in report 

If trace-cmd extracts trace_clock, trace-cmd reads trace_clock data from
the trace.dat and switches outputting format of timestamp for each
trace_clock.

Signed-off-by: Yoshihiro YUNOMAE <yoshihiro.yunomae.ez@hitachi.com>
Cc: Andrew Morton <akpm@linux-foundation.org>
Cc: Frederic Weisbecker <fweisbec@gmail.com>
Cc: Ingo Molnar <mingo@kernel.org>
Cc: Namhyung Kim <namhyung@kernel.org>
Link: http://lkml.kernel.org/r/20130424231305.14877.86147.stgit@yunodevel
Signed-off-by: Steven Rostedt <rostedt@goodmis.org>
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
This commit is contained in:
Yoshihiro YUNOMAE 2013-11-01 17:53:53 -04:00 committed by Arnaldo Carvalho de Melo
parent cc03c54296
commit 1b372ca52a
2 changed files with 44 additions and 12 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

50
tools/lib/traceevent/event-parse.c
View File

@ -305,6 +305,11 @@ int pevent_register_comm(struct pevent *pevent, const char *comm, int pid)
return 0;
}
void pevent_register_trace_clock(struct pevent *pevent, char *trace_clock)
{
pevent->trace_clock = trace_clock;
}
struct func_map {
unsigned long long addr;
char *func;
@ -4443,8 +4448,21 @@ void pevent_event_info(struct trace_seq *s, struct event_format *event,
trace_seq_terminate(s);
}
static bool is_timestamp_in_us(char *trace_clock, bool use_trace_clock)
{
if (!use_trace_clock)
return true;
if (!strcmp(trace_clock, "local") || !strcmp(trace_clock, "global")
|| !strcmp(trace_clock, "uptime") || !strcmp(trace_clock, "perf"))
return true;
/* trace_clock is setting in tsc or counter mode */
return false;
}
void pevent_print_event(struct pevent *pevent, struct trace_seq *s,
struct pevent_record *record)
struct pevent_record *record, bool use_trace_clock)
{
static const char *spaces = " "; /* 20 spaces */
struct event_format *event;
@ -4457,9 +4475,14 @@ void pevent_print_event(struct pevent *pevent, struct trace_seq *s,
int pid;
int len;
int p;
bool use_usec_format;
secs = record->ts / NSECS_PER_SEC;
nsecs = record->ts - secs * NSECS_PER_SEC;
use_usec_format = is_timestamp_in_us(pevent->trace_clock,
use_trace_clock);
if (use_usec_format) {
secs = record->ts / NSECS_PER_SEC;
nsecs = record->ts - secs * NSECS_PER_SEC;
}
if (record->size < 0) {
do_warning("ug! negative record size %d", record->size);
@ -4484,15 +4507,20 @@ void pevent_print_event(struct pevent *pevent, struct trace_seq *s,
} else
trace_seq_printf(s, "%16s-%-5d [%03d]", comm, pid, record->cpu);
if (pevent->flags & PEVENT_NSEC_OUTPUT) {
usecs = nsecs;
p = 9;
} else {
usecs = (nsecs + 500) / NSECS_PER_USEC;
p = 6;
}
if (use_usec_format) {
if (pevent->flags & PEVENT_NSEC_OUTPUT) {
usecs = nsecs;
p = 9;
} else {
usecs = (nsecs + 500) / NSECS_PER_USEC;
p = 6;
}
trace_seq_printf(s, " %5lu.%0*lu: %s: ", secs, p, usecs, event->name);
trace_seq_printf(s, " %5lu.%0*lu: %s: ",
secs, p, usecs, event->name);
} else
trace_seq_printf(s, " %12llu: %s: ",
record->ts, event->name);
/* Space out the event names evenly. */
len = strlen(event->name);

6
tools/lib/traceevent/event-parse.h
View File

@ -20,6 +20,7 @@
#ifndef _PARSE_EVENTS_H
#define _PARSE_EVENTS_H
#include <stdbool.h>
#include <stdarg.h>
#include <regex.h>
@ -450,6 +451,8 @@ struct pevent {
/* cache */
struct event_format *last_event;
char *trace_clock;
};
static inline void pevent_set_flag(struct pevent *pevent, int flag)
@ -527,6 +530,7 @@ enum trace_flag_type {
};
int pevent_register_comm(struct pevent *pevent, const char *comm, int pid);
void pevent_register_trace_clock(struct pevent *pevent, char *trace_clock);
int pevent_register_function(struct pevent *pevent, char *name,
unsigned long long addr, char *mod);
int pevent_register_print_string(struct pevent *pevent, char *fmt,
@ -534,7 +538,7 @@ int pevent_register_print_string(struct pevent *pevent, char *fmt,
int pevent_pid_is_registered(struct pevent *pevent, int pid);
void pevent_print_event(struct pevent *pevent, struct trace_seq *s,
struct pevent_record *record);
struct pevent_record *record, bool use_trace_clock);
int pevent_parse_header_page(struct pevent *pevent, char *buf, unsigned long size,
int long_size);