Commit 13c71b92 authored by Adrian Hunter's avatar Adrian Hunter Committed by Arnaldo Carvalho de Melo
Browse files

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: default avatarAdrian 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: default avatarArnaldo Carvalho de Melo <acme@redhat.com>
parent d9ae9c97

tools/perf/scripts/python/Perf-Trace-Util/Context.c

+27 −0
Original line number Diff line number Diff line
@@ -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}

};