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#include "builtin.h"
#include "util/util.h"
#include "util/cache.h"
#include "util/symbol.h"
#include "util/thread.h"
#include "util/header.h"
#include "util/parse-options.h"
#include "perf.h"
#include "util/debug.h"
#include "util/trace-event.h"
#include "util/data_map.h"
static char const *input_name = "perf.data";
static unsigned long total = 0;
static unsigned long total_comm = 0;
static struct perf_header *header;
static u64 sample_type;
static char *cwd;
static int cwdlen;
static int
process_comm_event(event_t *event, unsigned long offset, unsigned long head)
{
struct thread *thread = threads__findnew(event->comm.pid);
dump_printf("%p [%p]: PERF_RECORD_COMM: %s:%d\n",
(void *)(offset + head),
(void *)(long)(event->header.size),
event->comm.comm, event->comm.pid);
if (thread == NULL ||
thread__set_comm(thread, event->comm.comm)) {
dump_printf("problem processing PERF_RECORD_COMM, skipping event.\n");
return -1;
}
total_comm++;
return 0;
}
static int
process_sample_event(event_t *event, unsigned long offset, unsigned long head)
{
u64 ip = event->ip.ip;
u64 timestamp = -1;
u32 cpu = -1;
u64 period = 1;
void *more_data = event->ip.__more_data;
struct thread *thread = threads__findnew(event->ip.pid);
if (sample_type & PERF_SAMPLE_TIME) {
timestamp = *(u64 *)more_data;
more_data += sizeof(u64);
}
if (sample_type & PERF_SAMPLE_CPU) {
cpu = *(u32 *)more_data;
more_data += sizeof(u32);
more_data += sizeof(u32); /* reserved */
}
if (sample_type & PERF_SAMPLE_PERIOD) {
period = *(u64 *)more_data;
more_data += sizeof(u64);
}
dump_printf("%p [%p]: PERF_RECORD_SAMPLE (IP, %d): %d/%d: %p period: %Ld\n",
(void *)(offset + head),
(void *)(long)(event->header.size),
event->header.misc,
event->ip.pid, event->ip.tid,
(void *)(long)ip,
(long long)period);
if (thread == NULL) {
pr_debug("problem processing %d event, skipping it.\n",
event->header.type);
return -1;
}
dump_printf(" ... thread: %s:%d\n", thread->comm, thread->pid);
if (sample_type & PERF_SAMPLE_RAW) {
struct {
u32 size;
char data[0];
} *raw = more_data;
/*
* FIXME: better resolve from pid from the struct trace_entry
* field, although it should be the same than this perf
* event pid
*/
print_event(cpu, raw->data, raw->size, timestamp, thread->comm);
}
total += period;
return 0;
}
static int sample_type_check(u64 type)
{
sample_type = type;
if (!(sample_type & PERF_SAMPLE_RAW)) {
fprintf(stderr,
"No trace sample to read. Did you call perf record "
"without -R?");
return -1;
}
return 0;
}
static struct perf_file_handler file_handler = {
.process_sample_event = process_sample_event,
.process_comm_event = process_comm_event,
.sample_type_check = sample_type_check,
};
static int __cmd_trace(void)
{
register_idle_thread();
register_perf_file_handler(&file_handler);
return mmap_dispatch_perf_file(&header, input_name, NULL, false,
0, 0, &cwdlen, &cwd);
}
static const char * const annotate_usage[] = {
"perf trace [<options>] <command>",
NULL
};
static const struct option options[] = {
OPT_BOOLEAN('D', "dump-raw-trace", &dump_trace,
"dump raw trace in ASCII"),
OPT_BOOLEAN('v', "verbose", &verbose,
"be more verbose (show symbol address, etc)"),
OPT_BOOLEAN('l', "latency", &latency_format,
"show latency attributes (irqs/preemption disabled, etc)"),
OPT_END()
};
int cmd_trace(int argc, const char **argv, const char *prefix __used)
{
symbol__init(0);
argc = parse_options(argc, argv, options, annotate_usage, 0);
if (argc) {
/*
* Special case: if there's an argument left then assume tha
* it's a symbol filter:
*/
if (argc > 1)
usage_with_options(annotate_usage, options);
}
setup_pager();
return __cmd_trace();
}
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