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>
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@ -5,14 +5,23 @@
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* Copyright (C) 2010 Tom Zanussi <tzanussi@gmail.com>
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*/
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/*
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* Use Py_ssize_t for '#' formats to avoid DeprecationWarning: PY_SSIZE_T_CLEAN
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* will be required for '#' formats.
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*/
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#define PY_SSIZE_T_CLEAN
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#include <Python.h>
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#include "../../../util/trace-event.h"
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#include "../../../util/event.h"
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#include "../../../util/symbol.h"
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#include "../../../util/thread.h"
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#include "../../../util/map.h"
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#include "../../../util/maps.h"
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#include "../../../util/auxtrace.h"
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#include "../../../util/session.h"
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#include "../../../util/srcline.h"
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#include "../../../util/srccode.h"
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#if PY_MAJOR_VERSION < 3
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#define _PyCapsule_GetPointer(arg1, arg2) \
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@ -125,6 +134,49 @@ out:
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return Py_BuildValue("i", retval);
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}
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static PyObject *perf_sample_src(PyObject *obj, PyObject *args, bool get_srccode)
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{
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struct scripting_context *c = get_scripting_context(args);
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unsigned int line = 0;
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char *srcfile = NULL;
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char *srccode = NULL;
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PyObject *result;
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struct map *map;
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int len = 0;
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u64 addr;
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if (!c)
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return NULL;
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map = c->al->map;
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addr = c->al->addr;
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if (map && map->dso)
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srcfile = get_srcline_split(map->dso, map__rip_2objdump(map, addr), &line);
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if (get_srccode) {
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if (srcfile)
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srccode = find_sourceline(srcfile, line, &len);
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result = Py_BuildValue("(sIs#)", srcfile, line, srccode, (Py_ssize_t)len);
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} else {
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result = Py_BuildValue("(sI)", srcfile, line);
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}
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free(srcfile);
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return result;
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}
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static PyObject *perf_sample_srcline(PyObject *obj, PyObject *args)
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{
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return perf_sample_src(obj, args, false);
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}
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static PyObject *perf_sample_srccode(PyObject *obj, PyObject *args)
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{
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return perf_sample_src(obj, args, true);
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}
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static PyMethodDef ContextMethods[] = {
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{ "common_pc", perf_trace_context_common_pc, METH_VARARGS,
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"Get the common preempt count event field value."},
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@ -136,6 +188,10 @@ static PyMethodDef ContextMethods[] = {
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METH_VARARGS, "Get the machine code instruction."},
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{ "perf_set_itrace_options", perf_set_itrace_options,
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METH_VARARGS, "Set --itrace options."},
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{ "perf_sample_srcline", perf_sample_srcline,
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METH_VARARGS, "Get source file name and line number."},
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{ "perf_sample_srccode", perf_sample_srccode,
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METH_VARARGS, "Get source file name, line number and line."},
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{ NULL, NULL, 0, NULL}
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};
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