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13c71b9232
Add perf_sample_insn() to the perf_trace_context module so that a script can get the instruction bytes. 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/20210530192308.7382-8-adrian.hunter@intel.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
129 lines
3.3 KiB
C
129 lines
3.3 KiB
C
// SPDX-License-Identifier: GPL-2.0-or-later
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/*
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* Context.c. Python interfaces for perf script.
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*
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* Copyright (C) 2010 Tom Zanussi <tzanussi@gmail.com>
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*/
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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/maps.h"
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#if PY_MAJOR_VERSION < 3
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#define _PyCapsule_GetPointer(arg1, arg2) \
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PyCObject_AsVoidPtr(arg1)
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#define _PyBytes_FromStringAndSize(arg1, arg2) \
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PyString_FromStringAndSize((arg1), (arg2))
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PyMODINIT_FUNC initperf_trace_context(void);
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#else
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#define _PyCapsule_GetPointer(arg1, arg2) \
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PyCapsule_GetPointer((arg1), (arg2))
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#define _PyBytes_FromStringAndSize(arg1, arg2) \
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PyBytes_FromStringAndSize((arg1), (arg2))
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PyMODINIT_FUNC PyInit_perf_trace_context(void);
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#endif
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static struct scripting_context *get_scripting_context(PyObject *args)
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{
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PyObject *context;
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if (!PyArg_ParseTuple(args, "O", &context))
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return NULL;
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return _PyCapsule_GetPointer(context, NULL);
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}
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static PyObject *perf_trace_context_common_pc(PyObject *obj, PyObject *args)
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{
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struct scripting_context *c = get_scripting_context(args);
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if (!c)
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return NULL;
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return Py_BuildValue("i", common_pc(c));
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}
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static PyObject *perf_trace_context_common_flags(PyObject *obj,
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PyObject *args)
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{
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struct scripting_context *c = get_scripting_context(args);
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if (!c)
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return NULL;
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return Py_BuildValue("i", common_flags(c));
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}
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static PyObject *perf_trace_context_common_lock_depth(PyObject *obj,
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PyObject *args)
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{
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struct scripting_context *c = get_scripting_context(args);
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if (!c)
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return NULL;
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return Py_BuildValue("i", common_lock_depth(c));
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}
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static PyObject *perf_sample_insn(PyObject *obj, PyObject *args)
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{
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struct scripting_context *c = get_scripting_context(args);
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if (!c)
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return NULL;
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if (c->sample->ip && !c->sample->insn_len &&
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c->al->thread->maps && c->al->thread->maps->machine)
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script_fetch_insn(c->sample, c->al->thread, c->al->thread->maps->machine);
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if (!c->sample->insn_len)
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Py_RETURN_NONE; /* N.B. This is a return statement */
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return _PyBytes_FromStringAndSize(c->sample->insn, c->sample->insn_len);
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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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{ "common_flags", perf_trace_context_common_flags, METH_VARARGS,
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"Get the common flags event field value."},
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{ "common_lock_depth", perf_trace_context_common_lock_depth,
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METH_VARARGS, "Get the common lock depth event field value."},
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{ "perf_sample_insn", perf_sample_insn,
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METH_VARARGS, "Get the machine code instruction."},
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{ NULL, NULL, 0, NULL}
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};
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#if PY_MAJOR_VERSION < 3
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PyMODINIT_FUNC initperf_trace_context(void)
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{
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(void) Py_InitModule("perf_trace_context", ContextMethods);
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}
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#else
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PyMODINIT_FUNC PyInit_perf_trace_context(void)
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{
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static struct PyModuleDef moduledef = {
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PyModuleDef_HEAD_INIT,
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"perf_trace_context", /* m_name */
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"", /* m_doc */
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-1, /* m_size */
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ContextMethods, /* m_methods */
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NULL, /* m_reload */
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NULL, /* m_traverse */
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NULL, /* m_clear */
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NULL, /* m_free */
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};
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PyObject *mod;
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mod = PyModule_Create(&moduledef);
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/* Add perf_script_context to the module so it can be imported */
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PyObject_SetAttrString(mod, "perf_script_context", Py_None);
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return mod;
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}
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#endif
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