X-Git-Url: https://git.lttng.org/?a=blobdiff_plain;f=src%2Flttng-context-ppid.c;h=1286c376aaa5ae3d885f50f87c47bdd31e21fd58;hb=f5ffbd770ec2b9d1ac9b7059eb33a01432043bce;hp=854c5159d69fe2d92d28dd8716fad170d192527c;hpb=cfa6cc1d0f01c2cfcc1a679abf3a6572d411c309;p=lttng-modules.git

diff --git a/src/lttng-context-ppid.c b/src/lttng-context-ppid.c
index 854c5159..1286c376 100644
--- a/src/lttng-context-ppid.c
+++ b/src/lttng-context-ppid.c
@@ -12,12 +12,13 @@
 #include <linux/sched.h>
 #include <linux/syscalls.h>
 #include <lttng/events.h>
+#include <lttng/events-internal.h>
 #include <ringbuffer/frontend_types.h>
 #include <wrapper/vmalloc.h>
 #include <lttng/tracer.h>
 
 static
-size_t ppid_get_size(size_t offset)
+size_t ppid_get_size(void *priv, struct lttng_kernel_probe_ctx *probe_ctx, size_t offset)
 {
 	size_t size = 0;
 
@@ -27,9 +28,9 @@ size_t ppid_get_size(size_t offset)
 }
 
 static
-void ppid_record(struct lttng_ctx_field *field,
-		 struct lib_ring_buffer_ctx *ctx,
-		 struct lttng_channel *chan)
+void ppid_record(void *priv, struct lttng_kernel_probe_ctx *probe_ctx,
+		 struct lttng_kernel_ring_buffer_ctx *ctx,
+		 struct lttng_kernel_channel_buffer *chan)
 {
 	pid_t ppid;
 
@@ -43,14 +44,13 @@ void ppid_record(struct lttng_ctx_field *field,
 	rcu_read_lock();
 	ppid = task_tgid_nr(current->real_parent);
 	rcu_read_unlock();
-	lib_ring_buffer_align_ctx(ctx, lttng_alignof(ppid));
-	chan->ops->event_write(ctx, &ppid, sizeof(ppid));
+	chan->ops->event_write(ctx, &ppid, sizeof(ppid), lttng_alignof(ppid));
 }
 
 static
-void ppid_get_value(struct lttng_ctx_field *field,
-		struct lttng_probe_ctx *lttng_probe_ctx,
-		union lttng_ctx_value *value)
+void ppid_get_value(void *priv,
+		struct lttng_kernel_probe_ctx *lttng_probe_ctx,
+		struct lttng_ctx_value *value)
 {
 	pid_t ppid;
 
@@ -64,33 +64,26 @@ void ppid_get_value(struct lttng_ctx_field *field,
 	rcu_read_lock();
 	ppid = task_tgid_nr(current->real_parent);
 	rcu_read_unlock();
-	value->s64 = ppid;
+	value->u.s64 = ppid;
 }
 
-int lttng_add_ppid_to_ctx(struct lttng_ctx **ctx)
+static const struct lttng_kernel_ctx_field *ctx_field = lttng_kernel_static_ctx_field(
+	lttng_kernel_static_event_field("ppid",
+		lttng_kernel_static_type_integer_from_type(pid_t, __BYTE_ORDER, 10),
+		false, false, false),
+	ppid_get_size,
+	ppid_record,
+	ppid_get_value,
+	NULL, NULL);
+
+int lttng_add_ppid_to_ctx(struct lttng_kernel_ctx **ctx)
 {
-	struct lttng_ctx_field *field;
+	int ret;
 
-	field = lttng_append_context(ctx);
-	if (!field)
-		return -ENOMEM;
-	if (lttng_find_context(*ctx, "ppid")) {
-		lttng_remove_context_field(ctx, field);
+	if (lttng_kernel_find_context(*ctx, ctx_field->event_field->name))
 		return -EEXIST;
-	}
-	field->event_field.name = "ppid";
-	field->event_field.type.atype = atype_integer;
-	field->event_field.type.u.integer.size = sizeof(pid_t) * CHAR_BIT;
-	field->event_field.type.u.integer.alignment = lttng_alignof(pid_t) * CHAR_BIT;
-	field->event_field.type.u.integer.signedness = lttng_is_signed_type(pid_t);
-	field->event_field.type.u.integer.reverse_byte_order = 0;
-	field->event_field.type.u.integer.base = 10;
-	field->event_field.type.u.integer.encoding = lttng_encode_none;
-	field->get_size = ppid_get_size;
-	field->record = ppid_record;
-	field->get_value = ppid_get_value;
-	lttng_context_update(*ctx);
+	ret = lttng_kernel_context_append(ctx, ctx_field);
 	wrapper_vmalloc_sync_mappings();
-	return 0;
+	return ret;
 }
 EXPORT_SYMBOL_GPL(lttng_add_ppid_to_ctx);