perf probe: Rename common fields/functions from kprobe to probe.

As a precursor for perf to support uprobes, rename fields/functions
that had kprobe in their name but can be shared across perf-kprobes
and perf-uprobes to probe.

Cc: Ananth N Mavinakayanahalli <ananth@in.ibm.com>
Cc: Andrew Morton <akpm@linux-foundation.org>
Cc: Christoph Hellwig <hch@infradead.org>
Cc: "Frank Ch. Eigler" <fche@redhat.com>
Cc: Frederic Weisbecker <fweisbec@gmail.com>
Cc: Ingo Molnar <mingo@elte.hu>
Cc: Jim Keniston <jkenisto@linux.vnet.ibm.com>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Mark Wielaard <mjw@redhat.com>
Cc: Mathieu Desnoyers <mathieu.desnoyers@efficios.com>
Cc: Naren A Devaiah <naren.devaiah@in.ibm.com>
Cc: Oleg Nesterov <oleg@redhat.com>
Cc: "Paul E. McKenney" <paulmck@linux.vnet.ibm.com>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Randy Dunlap <rdunlap@xenotime.net>
Cc: Steven Rostedt <rostedt@goodmis.org>
LKML-Reference: <20100729141351.GG21723@linux.vnet.ibm.com>
Signed-off-by: Srikar Dronamraju <srikar@linux.vnet.ibm.com>
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>

tools/perf/builtin-probe.c

@@ -267,4 +267,3 @@ int cmd_probe(int argc, const char **argv, const char *prefix __used)
 	}
 	return 0;
 }
-

tools/perf/util/probe-event.h

@@ -7,33 +7,33 @@
 extern bool probe_event_dry_run;
 
 /* kprobe-tracer tracing point */
-struct kprobe_trace_point {
+struct probe_trace_point {
 	char		*symbol;	/* Base symbol */
 	unsigned long	offset;		/* Offset from symbol */
 	bool		retprobe;	/* Return probe flag */
 };
 
-/* kprobe-tracer tracing argument referencing offset */
-struct kprobe_trace_arg_ref {
-	struct kprobe_trace_arg_ref	*next;	/* Next reference */
+/* probe-tracer tracing argument referencing offset */
+struct probe_trace_arg_ref {
+	struct probe_trace_arg_ref	*next;	/* Next reference */
 	long				offset;	/* Offset value */
 };
 
 /* kprobe-tracer tracing argument */
-struct kprobe_trace_arg {
+struct probe_trace_arg {
 	char				*name;	/* Argument name */
 	char				*value;	/* Base value */
 	char				*type;	/* Type name */
-	struct kprobe_trace_arg_ref	*ref;	/* Referencing offset */
+	struct probe_trace_arg_ref	*ref;	/* Referencing offset */
 };
 
 /* kprobe-tracer tracing event (point + arg) */
-struct kprobe_trace_event {
+struct probe_trace_event {
 	char				*event;	/* Event name */
 	char				*group;	/* Group name */
-	struct kprobe_trace_point	point;	/* Trace point */
+	struct probe_trace_point	point;	/* Trace point */
 	int				nargs;	/* Number of args */
-	struct kprobe_trace_arg		*args;	/* Arguments */
+	struct probe_trace_arg		*args;	/* Arguments */
 };
 
 /* Perf probe probing point */
@@ -93,25 +93,18 @@ struct line_range {
 /* Command string to events */
 extern int parse_perf_probe_command(const char *cmd,
 				    struct perf_probe_event *pev);
-extern int parse_kprobe_trace_command(const char *cmd,
-				      struct kprobe_trace_event *tev);
 
 /* Events to command string */
 extern char *synthesize_perf_probe_command(struct perf_probe_event *pev);
-extern char *synthesize_kprobe_trace_command(struct kprobe_trace_event *tev);
+extern char *synthesize_probe_trace_command(struct probe_trace_event *tev);
 extern int synthesize_perf_probe_arg(struct perf_probe_arg *pa, char *buf,
 				     size_t len);
 
 /* Check the perf_probe_event needs debuginfo */
 extern bool perf_probe_event_need_dwarf(struct perf_probe_event *pev);
 
-/* Convert from kprobe_trace_event to perf_probe_event */
-extern int convert_to_perf_probe_event(struct kprobe_trace_event *tev,
-				       struct perf_probe_event *pev);
-
 /* Release event contents */
 extern void clear_perf_probe_event(struct perf_probe_event *pev);
-extern void clear_kprobe_trace_event(struct kprobe_trace_event *tev);
 
 /* Command string to line-range */
 extern int parse_line_range_desc(const char *cmd, struct line_range *lr);

tools/perf/util/probe-finder.c

@@ -366,10 +366,10 @@ static Dwarf_Die *die_find_member(Dwarf_Die *st_die, const char *name,
  * Probe finder related functions
  */
 
-static struct kprobe_trace_arg_ref *alloc_trace_arg_ref(long offs)
+static struct probe_trace_arg_ref *alloc_trace_arg_ref(long offs)
 {
-	struct kprobe_trace_arg_ref *ref;
-	ref = zalloc(sizeof(struct kprobe_trace_arg_ref));
+	struct probe_trace_arg_ref *ref;
+	ref = zalloc(sizeof(struct probe_trace_arg_ref));
 	if (ref != NULL)
 		ref->offset = offs;
 	return ref;
@@ -385,7 +385,7 @@ static int convert_variable_location(Dwarf_Die *vr_die, struct probe_finder *pf)
 	Dwarf_Word offs = 0;
 	bool ref = false;
 	const char *regs;
-	struct kprobe_trace_arg *tvar = pf->tvar;
+	struct probe_trace_arg *tvar = pf->tvar;
 	int ret;
 
 	/* TODO: handle more than 1 exprs */
@@ -459,10 +459,10 @@ static int convert_variable_location(Dwarf_Die *vr_die, struct probe_finder *pf)
 }
 
 static int convert_variable_type(Dwarf_Die *vr_die,
-				 struct kprobe_trace_arg *tvar,
+				 struct probe_trace_arg *tvar,
 				 const char *cast)
 {
-	struct kprobe_trace_arg_ref **ref_ptr = &tvar->ref;
+	struct probe_trace_arg_ref **ref_ptr = &tvar->ref;
 	Dwarf_Die type;
 	char buf[16];
 	int ret;
@@ -500,7 +500,7 @@ static int convert_variable_type(Dwarf_Die *vr_die,
 			while (*ref_ptr)
 				ref_ptr = &(*ref_ptr)->next;
 			/* Add new reference with offset +0 */
-			*ref_ptr = zalloc(sizeof(struct kprobe_trace_arg_ref));
+			*ref_ptr = zalloc(sizeof(struct probe_trace_arg_ref));
 			if (*ref_ptr == NULL) {
 				pr_warning("Out of memory error\n");
 				return -ENOMEM;
@@ -545,10 +545,10 @@ static int convert_variable_type(Dwarf_Die *vr_die,
 
 static int convert_variable_fields(Dwarf_Die *vr_die, const char *varname,
 				    struct perf_probe_arg_field *field,
-				    struct kprobe_trace_arg_ref **ref_ptr,
+				    struct probe_trace_arg_ref **ref_ptr,
 				    Dwarf_Die *die_mem)
 {
-	struct kprobe_trace_arg_ref *ref = *ref_ptr;
+	struct probe_trace_arg_ref *ref = *ref_ptr;
 	Dwarf_Die type;
 	Dwarf_Word offs;
 	int ret, tag;
@@ -574,7 +574,7 @@ static int convert_variable_fields(Dwarf_Die *vr_die, const char *varname,
 		pr_debug2("Array real type: (%x)\n",
 			 (unsigned)dwarf_dieoffset(&type));
 		if (tag == DW_TAG_pointer_type) {
-			ref = zalloc(sizeof(struct kprobe_trace_arg_ref));
+			ref = zalloc(sizeof(struct probe_trace_arg_ref));
 			if (ref == NULL)
 				return -ENOMEM;
 			if (*ref_ptr)
@@ -605,7 +605,7 @@ static int convert_variable_fields(Dwarf_Die *vr_die, const char *varname,
 			return -EINVAL;
 		}
 
-		ref = zalloc(sizeof(struct kprobe_trace_arg_ref));
+		ref = zalloc(sizeof(struct probe_trace_arg_ref));
 		if (ref == NULL)
 			return -ENOMEM;
 		if (*ref_ptr)
@@ -738,7 +738,7 @@ static int find_variable(Dwarf_Die *sp_die, struct probe_finder *pf)
 /* Show a probe point to output buffer */
 static int convert_probe_point(Dwarf_Die *sp_die, struct probe_finder *pf)
 {
-	struct kprobe_trace_event *tev;
+	struct probe_trace_event *tev;
 	Dwarf_Addr eaddr;
 	Dwarf_Die die_mem;
 	const char *name;
@@ -803,7 +803,7 @@ static int convert_probe_point(Dwarf_Die *sp_die, struct probe_finder *pf)
 
 	/* Find each argument */
 	tev->nargs = pf->pev->nargs;
-	tev->args = zalloc(sizeof(struct kprobe_trace_arg) * tev->nargs);
+	tev->args = zalloc(sizeof(struct probe_trace_arg) * tev->nargs);
 	if (tev->args == NULL)
 		return -ENOMEM;
 	for (i = 0; i < pf->pev->nargs; i++) {
@@ -1060,9 +1060,9 @@ static int find_probe_point_by_func(struct probe_finder *pf)
 	return _param.retval;
 }
 
-/* Find kprobe_trace_events specified by perf_probe_event from debuginfo */
-int find_kprobe_trace_events(int fd, struct perf_probe_event *pev,
-			     struct kprobe_trace_event **tevs, int max_tevs)
+/* Find probe_trace_events specified by perf_probe_event from debuginfo */
+int find_probe_trace_events(int fd, struct perf_probe_event *pev,
+			     struct probe_trace_event **tevs, int max_tevs)
 {
 	struct probe_finder pf = {.pev = pev, .max_tevs = max_tevs};
 	struct perf_probe_point *pp = &pev->point;
@@ -1072,7 +1072,7 @@ int find_kprobe_trace_events(int fd, struct perf_probe_event *pev,
 	Dwarf *dbg;
 	int ret = 0;
 
-	pf.tevs = zalloc(sizeof(struct kprobe_trace_event) * max_tevs);
+	pf.tevs = zalloc(sizeof(struct probe_trace_event) * max_tevs);
 	if (pf.tevs == NULL)
 		return -ENOMEM;
 	*tevs = pf.tevs;

tools/perf/util/probe-finder.h

@@ -16,9 +16,9 @@ static inline int is_c_varname(const char *name)
 }
 
 #ifdef DWARF_SUPPORT
-/* Find kprobe_trace_events specified by perf_probe_event from debuginfo */
-extern int find_kprobe_trace_events(int fd, struct perf_probe_event *pev,
-				    struct kprobe_trace_event **tevs,
+/* Find probe_trace_events specified by perf_probe_event from debuginfo */
+extern int find_probe_trace_events(int fd, struct perf_probe_event *pev,
+				    struct probe_trace_event **tevs,
 				    int max_tevs);
 
 /* Find a perf_probe_point from debuginfo */
@@ -33,7 +33,7 @@ extern int find_line_range(int fd, struct line_range *lr);
 
 struct probe_finder {
 	struct perf_probe_event	*pev;		/* Target probe event */
-	struct kprobe_trace_event *tevs;	/* Result trace events */
+	struct probe_trace_event *tevs;		/* Result trace events */
 	int			ntevs;		/* Number of trace events */
 	int			max_tevs;	/* Max number of trace events */
 
@@ -50,7 +50,7 @@ struct probe_finder {
 #endif
 	Dwarf_Op		*fb_ops;	/* Frame base attribute */
 	struct perf_probe_arg	*pvar;		/* Current target variable */
-	struct kprobe_trace_arg	*tvar;		/* Current result variable */
+	struct probe_trace_arg	*tvar;		/* Current result variable */
 };
 
 struct line_finder {