Never re-read length for dynamic arrays

[lttng-modules.git] / probes / lttng-kprobes.c

diff --git a/probes/lttng-kprobes.c b/probes/lttng-kprobes.c
index 65c1d3ba80ecf30eedbe8ccf1402c81ab4864998..89cfe07364779f6a2094979b16c6f039252fac89 100644 (file)
--- a/probes/lttng-kprobes.c
+++ b/probes/lttng-kprobes.c
@@ -27,7 +27,7 @@ int lttng_kprobes_handler_pre(struct kprobe *p, struct pt_regs *regs)
 
        if (!ACCESS_ONCE(chan->session->active))
                return 0;
-       lib_ring_buffer_ctx_init(&ctx, chan->chan, NULL, sizeof(data),
+       lib_ring_buffer_ctx_init(&ctx, chan->chan, event, sizeof(data),
                                 ltt_alignof(data), -1);
        ret = chan->ops->event_reserve(&ctx, event->id);
        if (ret < 0)
@@ -67,10 +67,11 @@ int lttng_create_kprobe_event(const char *name, struct ltt_event *event)
        field->type.atype = atype_integer;
        field->type.u.basic.integer.size = sizeof(unsigned long) * CHAR_BIT;
        field->type.u.basic.integer.alignment = ltt_alignof(unsigned long) * CHAR_BIT;
-       field->type.u.basic.integer.signedness = 0;
+       field->type.u.basic.integer.signedness = is_signed_type(unsigned long);
        field->type.u.basic.integer.reverse_byte_order = 0;
        field->type.u.basic.integer.base = 16;
        field->type.u.basic.integer.encoding = lttng_encode_none;
+       desc->owner = THIS_MODULE;
        event->desc = desc;
 
        return 0;
@@ -135,12 +136,17 @@ EXPORT_SYMBOL_GPL(lttng_kprobes_register);
 void lttng_kprobes_unregister(struct ltt_event *event)
 {
        unregister_kprobe(&event->u.kprobe.kp);
+}
+EXPORT_SYMBOL_GPL(lttng_kprobes_unregister);
+
+void lttng_kprobes_destroy_private(struct ltt_event *event)
+{
        kfree(event->u.kprobe.symbol_name);
        kfree(event->desc->fields);
        kfree(event->desc->name);
        kfree(event->desc);
 }
-EXPORT_SYMBOL_GPL(lttng_kprobes_unregister);
+EXPORT_SYMBOL_GPL(lttng_kprobes_destroy_private);
 
 MODULE_LICENSE("GPL and additional rights");
 MODULE_AUTHOR("Mathieu Desnoyers");