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perf scripting python: Add perf_sample_srcline() and perf_sample_srccode() 

Add perf_sample_srcline() and perf_sample_srccode() to the
perf_trace_context module so that a script can get the srcline or srccode
information.

Signed-off-by: Adrian Hunter <adrian.hunter@intel.com>
Cc: Andi Kleen <ak@linux.intel.com>
Cc: Jiri Olsa <jolsa@redhat.com>
Link: https://lore.kernel.org/r/20210530192308.7382-11-adrian.hunter@intel.com
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
This commit is contained in:
Adrian Hunter 2021-05-30 22:23:05 +03:00 committed by Arnaldo Carvalho de Melo
parent 7d00540d7d
commit e79457a526
1 changed files with 56 additions and 0 deletions
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56
tools/perf/scripts/python/Perf-Trace-Util/Context.c
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@ -5,14 +5,23 @@
* Copyright (C) 2010 Tom Zanussi <tzanussi@gmail.com>
*/
/*
* Use Py_ssize_t for '#' formats to avoid DeprecationWarning: PY_SSIZE_T_CLEAN
* will be required for '#' formats.
*/
#define PY_SSIZE_T_CLEAN
#include <Python.h>
#include "../../../util/trace-event.h"
#include "../../../util/event.h"
#include "../../../util/symbol.h"
#include "../../../util/thread.h"
#include "../../../util/map.h"
#include "../../../util/maps.h"
#include "../../../util/auxtrace.h"
#include "../../../util/session.h"
#include "../../../util/srcline.h"
#include "../../../util/srccode.h"
#if PY_MAJOR_VERSION < 3
#define _PyCapsule_GetPointer(arg1, arg2) \
@ -125,6 +134,49 @@ out:
return Py_BuildValue("i", retval);
}
static PyObject *perf_sample_src(PyObject *obj, PyObject *args, bool get_srccode)
{
struct scripting_context *c = get_scripting_context(args);
unsigned int line = 0;
char *srcfile = NULL;
char *srccode = NULL;
PyObject *result;
struct map *map;
int len = 0;
u64 addr;
if (!c)
return NULL;
map = c->al->map;
addr = c->al->addr;
if (map && map->dso)
srcfile = get_srcline_split(map->dso, map__rip_2objdump(map, addr), &line);
if (get_srccode) {
if (srcfile)
srccode = find_sourceline(srcfile, line, &len);
result = Py_BuildValue("(sIs#)", srcfile, line, srccode, (Py_ssize_t)len);
} else {
result = Py_BuildValue("(sI)", srcfile, line);
}
free(srcfile);
return result;
}
static PyObject *perf_sample_srcline(PyObject *obj, PyObject *args)
{
return perf_sample_src(obj, args, false);
}
static PyObject *perf_sample_srccode(PyObject *obj, PyObject *args)
{
return perf_sample_src(obj, args, true);
}
static PyMethodDef ContextMethods[] = {
{ "common_pc", perf_trace_context_common_pc, METH_VARARGS,
"Get the common preempt count event field value."},
@ -136,6 +188,10 @@ static PyMethodDef ContextMethods[] = {
METH_VARARGS, "Get the machine code instruction."},
{ "perf_set_itrace_options", perf_set_itrace_options,
METH_VARARGS, "Set --itrace options."},
{ "perf_sample_srcline", perf_sample_srcline,
METH_VARARGS, "Get source file name and line number."},
{ "perf_sample_srccode", perf_sample_srccode,
METH_VARARGS, "Get source file name, line number and line."},
{ NULL, NULL, 0, NULL}
};