X-Git-Url: http://git.liburcu.org/?a=blobdiff_plain;f=probes%2Flttng-ftrace.c;h=fe1bfd6652ab837a0911b566b3c5dc6759d28043;hb=HEAD;hp=3ec000ae576e8b5adde12b6bb27fc4b408f033fc;hpb=5a9479dcba0b43d326569fa0bd48318222d23fcb;p=lttng-modules.git

diff --git a/probes/lttng-ftrace.c b/probes/lttng-ftrace.c
deleted file mode 100644
index 3ec000ae..00000000
--- a/probes/lttng-ftrace.c
+++ /dev/null
@@ -1,140 +0,0 @@
-/*
- * (C) Copyright	2009-2011 -
- * 		Mathieu Desnoyers <mathieu.desnoyers@efficios.com>
- *
- * LTTng function tracer integration module.
- *
- * Dual LGPL v2.1/GPL v2 license.
- */
-
-#include <linux/module.h>
-#include <linux/ftrace.h>
-#include <linux/slab.h>
-#include "../ltt-events.h"
-#include "../wrapper/ringbuffer/frontend_types.h"
-#include "../wrapper/ftrace.h"
-#include "../ltt-tracer.h"
-
-static
-void lttng_ftrace_handler(unsigned long ip, unsigned long parent_ip, void **data)
-{
-	struct ltt_event *event = *data;
-	struct ltt_channel *chan = event->chan;
-	struct lib_ring_buffer_ctx ctx;
-	struct {
-		unsigned long ip;
-		unsigned long parent_ip;
-	} payload;
-	int ret;
-
-	if (!ACCESS_ONCE(chan->session->active))
-		return;
-	lib_ring_buffer_ctx_init(&ctx, chan->chan, NULL,
-				 sizeof(payload), ltt_alignof(payload), -1);
-	ret = chan->ops->event_reserve(&ctx);
-	if (ret < 0)
-		return;
-	payload.ip = ip;
-	payload.parent_ip = parent_ip;
-	lib_ring_buffer_align_ctx(&ctx, ltt_alignof(payload));
-	chan->ops->event_write(&ctx, &payload, sizeof(payload));
-	chan->ops->event_commit(&ctx);
-	return;
-}
-
-/*
- * Create event description
- */
-static
-int lttng_create_ftrace_event(const char *name, struct ltt_event *event)
-{
-	struct lttng_event_field *fields;
-	struct lttng_event_desc *desc;
-	int ret;
-
-	desc = kzalloc(sizeof(*event->desc), GFP_KERNEL);
-	if (!desc)
-		return -ENOMEM;
-	desc->name = kstrdup(name, GFP_KERNEL);
-	if (!desc->name) {
-		ret = -ENOMEM;
-		goto error_str;
-	}
-	desc->nr_fields = 2;
-	desc->fields = fields =
-		kzalloc(2 * sizeof(struct lttng_event_field), GFP_KERNEL);
-	fields[0].name = "ip";
-	fields[0].type.atype = atype_integer;
-	fields[0].type.u.basic.integer.size = sizeof(unsigned long);
-	fields[0].type.u.basic.integer.alignment = ltt_alignof(unsigned long);
-	fields[0].type.u.basic.integer.signedness = 0;
-	fields[0].type.u.basic.integer.reverse_byte_order = 0;
-	fields[0].type.u.basic.integer.base = 16;
-	fields[0].type.u.basic.integer.encoding = lttng_encode_none;
-
-	fields[1].name = "parent_ip";
-	fields[1].type.atype = atype_integer;
-	fields[1].type.u.basic.integer.size = sizeof(unsigned long);
-	fields[1].type.u.basic.integer.alignment = ltt_alignof(unsigned long);
-	fields[1].type.u.basic.integer.signedness = 0;
-	fields[1].type.u.basic.integer.reverse_byte_order = 0;
-	fields[1].type.u.basic.integer.base = 16;
-	fields[1].type.u.basic.integer.encoding = lttng_encode_none;
-
-	event->desc = desc;
-
-	return 0;
-
-error_str:
-	kfree(desc);
-	return ret;
-}
-
-static
-struct ftrace_probe_ops lttng_ftrace_ops = {
-	.func = lttng_ftrace_handler,
-};
-
-int lttng_ftrace_register(const char *name,
-			  const char *symbol_name,
-			  struct ltt_event *event)
-{
-	int ret;
-
-	ret = lttng_create_ftrace_event(name, event);
-	if (ret)
-		goto error;
-
-	event->u.ftrace.symbol_name = kstrdup(name, GFP_KERNEL);
-	if (!event->u.ftrace.symbol_name)
-		goto name_error;
-
-	ret = wrapper_register_ftrace_function_probe(event->u.ftrace.symbol_name,
-			&lttng_ftrace_ops, event);
-	if (ret)
-		goto register_error;
-	return 0;
-
-register_error:
-	kfree(event->u.ftrace.symbol_name);
-name_error:
-	kfree(event->desc->name);
-	kfree(event->desc);
-error:
-	return ret;
-}
-EXPORT_SYMBOL_GPL(lttng_ftrace_register);
-
-void lttng_ftrace_unregister(struct ltt_event *event)
-{
-	wrapper_unregister_ftrace_function_probe(event->u.ftrace.symbol_name,
-			&lttng_ftrace_ops, event);
-	kfree(event->u.ftrace.symbol_name);
-	kfree(event->desc->name);
-	kfree(event->desc);
-}
-EXPORT_SYMBOL_GPL(lttng_ftrace_unregister);
-
-MODULE_LICENSE("GPL and additional rights");
-MODULE_AUTHOR("Mathieu Desnoyers");
-MODULE_DESCRIPTION("Linux Trace Toolkit Ftrace Support");