@@ -624,7 +624,7 @@ as perf_trace_context.perf_script_context .
perf_set_itrace_options(context, itrace_options) - set --itrace options if they have not been set already
perf_sample_srcline(context) - returns source_file_name, line_number
perf_sample_srccode(context) - returns source_file_name, line_number, source_line
-
+ perf_config_get(config_name) - returns the value of the named config item, or None if unset
Util.py Module
~~~~~~~~~~~~~~
@@ -12,6 +12,7 @@
#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"
@@ -182,6 +183,15 @@ 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,
@@ -199,6 +209,7 @@ static PyMethodDef ContextMethods[] = {
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}
};
@@ -912,6 +912,7 @@ void set_buildid_dir(const char *dir)
struct perf_config_scan_data {
const char *name;
const char *fmt;
+ const char *value;
va_list args;
int ret;
};
@@ -939,3 +940,24 @@ int perf_config_scan(const char *name, const char *fmt, ...)
return d.ret;
}
+
+static int perf_config_get_cb(const char *var, const char *value, void *data)
+{
+ struct perf_config_scan_data *d = data;
+
+ if (!strcmp(var, d->name))
+ d->value = value;
+
+ return 0;
+}
+
+const char *perf_config_get(const char *name)
+{
+ struct perf_config_scan_data d = {
+ .name = name,
+ .value = NULL,
+ };
+
+ perf_config(perf_config_get_cb, &d);
+ return d.value;
+}
@@ -30,6 +30,7 @@ typedef int (*config_fn_t)(const char *, const char *, void *);
int perf_default_config(const char *, const char *, void *);
int perf_config(config_fn_t fn, void *);
int perf_config_scan(const char *name, const char *fmt, ...) __scanf(2, 3);
+const char *perf_config_get(const char *name);
int perf_config_set(struct perf_config_set *set,
config_fn_t fn, void *data);
int perf_config_int(int *dest, const char *, const char *);
This can be used to get config values like which objdump Perf uses for disassembly. Signed-off-by: James Clark <james.clark@linaro.org> --- .../perf/Documentation/perf-script-python.txt | 2 +- .../scripts/python/Perf-Trace-Util/Context.c | 11 ++++++++++ tools/perf/util/config.c | 22 +++++++++++++++++++ tools/perf/util/config.h | 1 + 4 files changed, 35 insertions(+), 1 deletion(-)