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Linux kernel mirror (for testing) git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
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123456789101112131415161718192021222324252627282930313233343536373839404142434445464748495051525354555657585960616263646566676869707172737475767778798081828384858687888990919293949596979899100101102103104105106107108109110111112113114115116117118119120121122123124125126127128129130131132133134135136137138139140141142143144145146147148149150151152153154155156157158159160161162163164165166167168169170171172173174175176177178179180181182183184185186187188189190191192193194195196197198199200201202203204205206207208209210211212213214215216217218219220221222223224225226// SPDX-License-Identifier: GPL-2.0-or-later/* * Context.c. Python interfaces for perf script. * * 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/config.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"
#define _PyCapsule_GetPointer(arg1, arg2) \ PyCapsule_GetPointer((arg1), (arg2))#define _PyBytes_FromStringAndSize(arg1, arg2) \ PyBytes_FromStringAndSize((arg1), (arg2))#define _PyUnicode_AsUTF8(arg) \ PyUnicode_AsUTF8(arg)
PyMODINIT_FUNC PyInit_perf_trace_context(void);
static struct scripting_context *get_args(PyObject *args, const char *name, PyObject **arg2){ int cnt = 1 + !!arg2; PyObject *context;
if (!PyArg_UnpackTuple(args, name, 1, cnt, &context, arg2)) return NULL;
return _PyCapsule_GetPointer(context, NULL);}
static struct scripting_context *get_scripting_context(PyObject *args){ return get_args(args, "context", NULL);}
#ifdef HAVE_LIBTRACEEVENTstatic PyObject *perf_trace_context_common_pc(PyObject *obj, PyObject *args){ struct scripting_context *c = get_scripting_context(args);
if (!c) return NULL;
return Py_BuildValue("i", common_pc(c));}
static PyObject *perf_trace_context_common_flags(PyObject *obj, PyObject *args){ struct scripting_context *c = get_scripting_context(args);
if (!c) return NULL;
return Py_BuildValue("i", common_flags(c));}
static PyObject *perf_trace_context_common_lock_depth(PyObject *obj, PyObject *args){ struct scripting_context *c = get_scripting_context(args);
if (!c) return NULL;
return Py_BuildValue("i", common_lock_depth(c));}#endif
static PyObject *perf_sample_insn(PyObject *obj, PyObject *args){ struct scripting_context *c = get_scripting_context(args);
if (!c) return NULL;
if (c->sample->ip && !c->sample->insn_len && thread__maps(c->al->thread)) { struct machine *machine = maps__machine(thread__maps(c->al->thread));
perf_sample__fetch_insn(c->sample, c->al->thread, machine); } if (!c->sample->insn_len) Py_RETURN_NONE; /* N.B. This is a return statement */
return _PyBytes_FromStringAndSize(c->sample->insn, c->sample->insn_len);}
static PyObject *perf_set_itrace_options(PyObject *obj, PyObject *args){ struct scripting_context *c; const char *itrace_options; int retval = -1; PyObject *str;
c = get_args(args, "itrace_options", &str); if (!c) return NULL;
if (!c->session || !c->session->itrace_synth_opts) goto out;
if (c->session->itrace_synth_opts->set) { retval = 1; goto out; }
itrace_options = _PyUnicode_AsUTF8(str);
retval = itrace_do_parse_synth_opts(c->session->itrace_synth_opts, itrace_options, 0);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; struct dso *dso; int len = 0; u64 addr;
if (!c) return NULL;
map = c->al->map; addr = c->al->addr; dso = map ? map__dso(map) : NULL;
if (dso) srcfile = get_srcline_split(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 PyObject *__perf_config_get(PyObject *obj, PyObject *args){ const char *config_name;
if (!PyArg_ParseTuple(args, "s", &config_name)) return NULL; return Py_BuildValue("s", perf_config_get(config_name));}
static PyMethodDef ContextMethods[] = {#ifdef HAVE_LIBTRACEEVENT { "common_pc", perf_trace_context_common_pc, METH_VARARGS, "Get the common preempt count event field value."}, { "common_flags", perf_trace_context_common_flags, METH_VARARGS, "Get the common flags event field value."}, { "common_lock_depth", perf_trace_context_common_lock_depth, METH_VARARGS, "Get the common lock depth event field value."},#endif { "perf_sample_insn", perf_sample_insn, 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."}, { "perf_config_get", __perf_config_get, METH_VARARGS, "Get perf config entry"}, { NULL, NULL, 0, NULL}};
PyMODINIT_FUNC PyInit_perf_trace_context(void){ static struct PyModuleDef moduledef = { PyModuleDef_HEAD_INIT, "perf_trace_context", /* m_name */ "", /* m_doc */ -1, /* m_size */ ContextMethods, /* m_methods */ NULL, /* m_reload */ NULL, /* m_traverse */ NULL, /* m_clear */ NULL, /* m_free */ }; PyObject *mod;
mod = PyModule_Create(&moduledef); /* Add perf_script_context to the module so it can be imported */ PyObject_SetAttrString(mod, "perf_script_context", Py_None);
return mod;}