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perf scripting python: Add perf_sample_insn() 

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>
This commit is contained in:
Adrian Hunter 2021-05-30 22:23:02 +03:00 committed by Arnaldo Carvalho de Melo
parent d9ae9c9776
commit 13c71b9232
1 changed files with 27 additions and 0 deletions
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27
tools/perf/scripts/python/Perf-Trace-Util/Context.c
View File

@ -7,15 +7,23 @@
#include <Python.h>
#include "../../../util/trace-event.h"
#include "../../../util/event.h"
#include "../../../util/symbol.h"
#include "../../../util/thread.h"
#include "../../../util/maps.h"
#if PY_MAJOR_VERSION < 3
#define _PyCapsule_GetPointer(arg1, arg2) \
PyCObject_AsVoidPtr(arg1)
#define _PyBytes_FromStringAndSize(arg1, arg2) \
PyString_FromStringAndSize((arg1), (arg2))
PyMODINIT_FUNC initperf_trace_context(void);
#else
#define _PyCapsule_GetPointer(arg1, arg2) \
PyCapsule_GetPointer((arg1), (arg2))
#define _PyBytes_FromStringAndSize(arg1, arg2) \
PyBytes_FromStringAndSize((arg1), (arg2))
PyMODINIT_FUNC PyInit_perf_trace_context(void);
#endif
@ -62,6 +70,23 @@ static PyObject *perf_trace_context_common_lock_depth(PyObject *obj,
return Py_BuildValue("i", common_lock_depth(c));
}
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 &&
c->al->thread->maps && c->al->thread->maps->machine)
script_fetch_insn(c->sample, c->al->thread, c->al->thread->maps->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 PyMethodDef ContextMethods[] = {
{ "common_pc", perf_trace_context_common_pc, METH_VARARGS,
"Get the common preempt count event field value."},
@ -69,6 +94,8 @@ static PyMethodDef ContextMethods[] = {
"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."},
{ "perf_sample_insn", perf_sample_insn,
METH_VARARGS, "Get the machine code instruction."},
{ NULL, NULL, 0, NULL}
};