diff --git a/tools/perf/Documentation/perf-probe.txt b/tools/perf/Documentation/perf-probe.txt
index bb671b3..e36ed4d 100644
--- a/tools/perf/Documentation/perf-probe.txt
+++ b/tools/perf/Documentation/perf-probe.txt
@@ -79,7 +79,15 @@
 'EVENT' specifies the name of new event, if omitted, it will be set the name of the probed function. Currently, event group name is set as 'probe'.
 'FUNC' specifies a probed function name, and it may have one of the following options; '+OFFS' is the offset from function entry address in bytes, ':RLN' is the relative-line number from function entry line, and '%return' means that it probes function return. And ';PTN' means lazy matching pattern (see LAZY MATCHING). Note that ';PTN' must be the end of the probe point definition.  In addition, '@SRC' specifies a source file which has that function.
 It is also possible to specify a probe point by the source line number or lazy matching by using 'SRC:ALN' or 'SRC;PTN' syntax, where 'SRC' is the source file path, ':ALN' is the line number and ';PTN' is the lazy matching pattern.
-'ARG' specifies the arguments of this probe point. You can use the name of local variable, or kprobe-tracer argument format (e.g. $retval, %ax, etc).
+'ARG' specifies the arguments of this probe point, (see PROBE ARGUMENT).
+
+PROBE ARGUMENT
+--------------
+Each probe argument follows below syntax.
+
+ [NAME=]LOCALVAR|$retval|%REG|@SYMBOL
+
+'NAME' specifies the name of this argument (optional). You can use the name of local variable, local data structure member (e.g. var->field, var.field2), or kprobe-tracer argument format (e.g. $retval, %ax, etc).
 
 LINE SYNTAX
 -----------
diff --git a/tools/perf/builtin-probe.c b/tools/perf/builtin-probe.c
index bfc47ff..daf4668 100644
--- a/tools/perf/builtin-probe.c
+++ b/tools/perf/builtin-probe.c
@@ -142,9 +142,9 @@
 	OPT_CALLBACK('a', "add", NULL,
 #ifdef DWARF_SUPPORT
 		"[EVENT=]FUNC[@SRC][+OFF|%return|:RL|;PT]|SRC:AL|SRC;PT"
-		" [ARG ...]",
+		" [[NAME=]ARG ...]",
 #else
-		"[EVENT=]FUNC[+OFF|%return] [ARG ...]",
+		"[EVENT=]FUNC[+OFF|%return] [[NAME=]ARG ...]",
 #endif
 		"probe point definition, where\n"
 		"\t\tGROUP:\tGroup name (optional)\n"
diff --git a/tools/perf/util/probe-event.c b/tools/perf/util/probe-event.c
index 3fc0be7..ab6f53d 100644
--- a/tools/perf/util/probe-event.c
+++ b/tools/perf/util/probe-event.c
@@ -437,22 +437,28 @@
 /* Parse perf-probe event argument */
 static void parse_perf_probe_arg(const char *str, struct perf_probe_arg *arg)
 {
-	const char *tmp;
+	char *tmp;
 	struct perf_probe_arg_field **fieldp;
 
 	pr_debug("parsing arg: %s into ", str);
 
+	tmp = strchr(str, '=');
+	if (tmp) {
+		arg->name = xstrndup(str, tmp - str);
+		str = tmp + 1;
+	}
+
 	tmp = strpbrk(str, "-.");
 	if (!is_c_varname(str) || !tmp) {
 		/* A variable, register, symbol or special value */
-		arg->name = xstrdup(str);
-		pr_debug("%s\n", arg->name);
+		arg->var = xstrdup(str);
+		pr_debug("%s\n", arg->var);
 		return;
 	}
 
 	/* Structure fields */
-	arg->name = xstrndup(str, tmp - str);
-	pr_debug("%s, ", arg->name);
+	arg->var = xstrndup(str, tmp - str);
+	pr_debug("%s, ", arg->var);
 	fieldp = &arg->field;
 
 	do {
@@ -497,7 +503,7 @@
 	pev->args = xzalloc(sizeof(struct perf_probe_arg) * pev->nargs);
 	for (i = 0; i < pev->nargs; i++) {
 		parse_perf_probe_arg(argv[i + 1], &pev->args[i]);
-		if (is_c_varname(pev->args[i].name) && pev->point.retprobe)
+		if (is_c_varname(pev->args[i].var) && pev->point.retprobe)
 			semantic_error("You can't specify local variable for"
 				       " kretprobe");
 	}
@@ -514,7 +520,7 @@
 		return true;
 
 	for (i = 0; i < pev->nargs; i++)
-		if (is_c_varname(pev->args[i].name))
+		if (is_c_varname(pev->args[i].var))
 			return true;
 
 	return false;
@@ -575,7 +581,10 @@
 	int ret;
 	char *tmp = buf;
 
-	ret = e_snprintf(tmp, len, "%s", pa->name);
+	if (pa->name && pa->var)
+		ret = e_snprintf(tmp, len, "%s=%s", pa->name, pa->var);
+	else
+		ret = e_snprintf(tmp, len, "%s", pa->name ? pa->name : pa->var);
 	if (ret <= 0)
 		goto error;
 	tmp += ret;
@@ -803,6 +812,8 @@
 	for (i = 0; i < pev->nargs; i++) {
 		if (pev->args[i].name)
 			free(pev->args[i].name);
+		if (pev->args[i].var)
+			free(pev->args[i].var);
 		field = pev->args[i].field;
 		while (field) {
 			next = field->next;
@@ -1117,8 +1128,11 @@
 	if (tev->nargs) {
 		tev->args = xzalloc(sizeof(struct kprobe_trace_arg)
 				    * tev->nargs);
-		for (i = 0; i < tev->nargs; i++)
-			tev->args[i].value = xstrdup(pev->args[i].name);
+		for (i = 0; i < tev->nargs; i++) {
+			if (pev->args[i].name)
+				tev->args[i].name = xstrdup(pev->args[i].name);
+			tev->args[i].value = xstrdup(pev->args[i].var);
+		}
 	}
 
 	/* Currently just checking function name from symbol map */
diff --git a/tools/perf/util/probe-event.h b/tools/perf/util/probe-event.h
index 9d99fc2..10411f5 100644
--- a/tools/perf/util/probe-event.h
+++ b/tools/perf/util/probe-event.h
@@ -55,6 +55,7 @@
 /* Perf probe probing argument */
 struct perf_probe_arg {
 	char				*name;	/* Argument name */
+	char				*var;	/* Variable name */
 	struct perf_probe_arg_field	*field;	/* Structure fields */
 };
 
diff --git a/tools/perf/util/probe-finder.c b/tools/perf/util/probe-finder.c
index a851377..105e95c 100644
--- a/tools/perf/util/probe-finder.c
+++ b/tools/perf/util/probe-finder.c
@@ -484,35 +484,40 @@
 	convert_location(expr, pf);
 
 	if (pf->pvar->field)
-		convert_variable_fields(vr_die, pf->pvar->name,
+		convert_variable_fields(vr_die, pf->pvar->var,
 					pf->pvar->field, &pf->tvar->ref);
 	/* *expr will be cached in libdw. Don't free it. */
 	return ;
 error:
 	/* TODO: Support const_value */
 	die("Failed to find the location of %s at this address.\n"
-	    " Perhaps, it has been optimized out.", pf->pvar->name);
+	    " Perhaps, it has been optimized out.", pf->pvar->var);
 }
 
 /* Find a variable in a subprogram die */
 static void find_variable(Dwarf_Die *sp_die, struct probe_finder *pf)
 {
 	Dwarf_Die vr_die;
-	char buf[128];
+	char buf[32];
 
-	/* TODO: Support struct members and arrays */
-	if (!is_c_varname(pf->pvar->name)) {
-		/* Copy raw parameters */
-		pf->tvar->value = xstrdup(pf->pvar->name);
-	} else {
-		synthesize_perf_probe_arg(pf->pvar, buf, 128);
+	/* TODO: Support arrays */
+	if (pf->pvar->name)
+		pf->tvar->name = xstrdup(pf->pvar->name);
+	else {
+		synthesize_perf_probe_arg(pf->pvar, buf, 32);
 		pf->tvar->name = xstrdup(buf);
+	}
+
+	if (!is_c_varname(pf->pvar->var)) {
+		/* Copy raw parameters */
+		pf->tvar->value = xstrdup(pf->pvar->var);
+	} else {
 		pr_debug("Searching '%s' variable in context.\n",
-			 pf->pvar->name);
+			 pf->pvar->var);
 		/* Search child die for local variables and parameters. */
-		if (!die_find_variable(sp_die, pf->pvar->name, &vr_die))
+		if (!die_find_variable(sp_die, pf->pvar->var, &vr_die))
 			die("Failed to find '%s' in this function.",
-			    pf->pvar->name);
+			    pf->pvar->var);
 		convert_variable(&vr_die, pf);
 	}
 }