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perf scripting python: Add perf_set_itrace_options()

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Add perf_set_itrace_options() to the perf_trace_context module so that a
script can set the itrace options for a session if they have not been set
already.

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/20210530192308.7382-10-adrian.hunter@intel.com
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
This commit is contained in:
Adrian Hunter 2021-05-30 22:23:04 +03:00 committed by Arnaldo Carvalho de Melo
parent e621b8ffec
commit 7d00540d7d
1 changed files with 42 additions and 2 deletions
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44
tools/perf/scripts/python/Perf-Trace-Util/Context.c
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@ -11,12 +11,16 @@
#include "../../../util/symbol.h"
#include "../../../util/thread.h"
#include "../../../util/maps.h"
#include "../../../util/auxtrace.h"
#include "../../../util/session.h"
#if PY_MAJOR_VERSION < 3
#define _PyCapsule_GetPointer(arg1, arg2) \
PyCObject_AsVoidPtr(arg1)
#define _PyBytes_FromStringAndSize(arg1, arg2) \
PyString_FromStringAndSize((arg1), (arg2))
#define _PyUnicode_AsUTF8(arg) \
PyString_AsString(arg)
PyMODINIT_FUNC initperf_trace_context(void);
#else
@ -24,20 +28,28 @@ PyMODINIT_FUNC initperf_trace_context(void);
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);
#endif
static struct scripting_context *get_scripting_context(PyObject *args)
static struct scripting_context *get_args(PyObject *args, const char *name, PyObject **arg2)
{
int cnt = 1 + !!arg2;
PyObject *context;
if (!PyArg_ParseTuple(args, "O", &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);
}
static PyObject *perf_trace_context_common_pc(PyObject *obj, PyObject *args)
{
struct scripting_context *c = get_scripting_context(args);
@ -87,6 +99,32 @@ static PyObject *perf_sample_insn(PyObject *obj, PyObject *args)
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 PyMethodDef ContextMethods[] = {
{ "common_pc", perf_trace_context_common_pc, METH_VARARGS,
"Get the common preempt count event field value."},
@ -96,6 +134,8 @@ static PyMethodDef ContextMethods[] = {
METH_VARARGS, "Get the common lock depth event field value."},
{ "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."},
{ NULL, NULL, 0, NULL}
};