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Commit 5555ded4 authored by Arnaldo Carvalho de Melo's avatar Arnaldo Carvalho de Melo
Browse files

perf evsel: Introduce perf_evsel__{str,int}val methods 

Wrappers to the libtraceevent routines, so that we can further reduce
the surface contact perf builtins have with it.

Cc: David Ahern <dsahern@gmail.com>
Cc: Frederic Weisbecker <fweisbec@gmail.com>
Cc: Jiri Olsa <jolsa@redhat.com>
Cc: Mike Galbraith <efault@gmx.de>
Cc: Namhyung Kim <namhyung@gmail.com>
Cc: Paul Mackerras <paulus@samba.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Stephane Eranian <eranian@google.com>
Link: http://lkml.kernel.org/n/tip-rtmgzptvrifzjxqwb9vs6g1b@git.kernel.org


Signed-off-by: default avatarArnaldo Carvalho de Melo <acme@redhat.com>
parent 0e9b07e5

tools/perf/util/evsel.c

+35 −0
Original line number Diff line number Diff line
@@ -10,6 +10,7 @@ 
#include <byteswap.h>

#include <linux/bitops.h>

#include "asm/bug.h"

#include "event-parse.h"

#include "evsel.h"

#include "evlist.h"

#include "util.h"
@@ -1000,3 +1001,37 @@ int perf_event__synthesize_sample(union perf_event *event, u64 type, 


	return 0;

}



char *perf_evsel__strval(struct perf_evsel *evsel, struct perf_sample *sample,

			 const char *name)

{

	struct format_field *field = pevent_find_field(evsel->tp_format, name);

	int offset;



        if (!field)

                return NULL;



	offset = field->offset;



	if (field->flags & FIELD_IS_DYNAMIC) {

		offset = *(int *)(sample->raw_data + field->offset);

		offset &= 0xffff;

	}



	return sample->raw_data + offset;

}



u64 perf_evsel__intval(struct perf_evsel *evsel, struct perf_sample *sample,

		       const char *name)

{

	struct format_field *field = pevent_find_field(evsel->tp_format, name);

	u64 val;



        if (!field)

                return 0;



	val = pevent_read_number(evsel->tp_format->pevent,

				 sample->raw_data + field->offset, field->size);

	return val;



}

tools/perf/util/evsel.h

+7 −0
Original line number Diff line number Diff line
@@ -120,6 +120,13 @@ int perf_evsel__open(struct perf_evsel *evsel, struct cpu_map *cpus, 
		     struct thread_map *threads);

void perf_evsel__close(struct perf_evsel *evsel, int ncpus, int nthreads);



struct perf_sample;



char *perf_evsel__strval(struct perf_evsel *evsel, struct perf_sample *sample,

			 const char *name);

u64 perf_evsel__intval(struct perf_evsel *evsel, struct perf_sample *sample,

		       const char *name);



#define perf_evsel__match(evsel, t, c)		\

	(evsel->attr.type == PERF_TYPE_##t &&	\

	 evsel->attr.config == PERF_COUNT_##c)