Add support for kvm x86 specific tracepoints

[lttng-modules.git] / lttng-context-hostname.c

diff --git a/lttng-context-hostname.c b/lttng-context-hostname.c
index e38340b72ec7bf53f8272ddacac5cf7434212498..7cf7f7c849b6a9d9572257d76b1501c842a48aab 100644 (file)
--- a/lttng-context-hostname.c
+++ b/lttng-context-hostname.c
@@ -49,8 +49,11 @@ void hostname_record(struct lttng_ctx_field *field,
        struct uts_namespace *ns;
        char *hostname;
 
-       rcu_read_lock();
-       nsproxy = task_nsproxy(current);
+       /*
+        * No need to take the RCU read-side lock to read current
+        * nsproxy. (documented in nsproxy.h)
+        */
+       nsproxy = current->nsproxy;
        if (nsproxy) {
                ns = nsproxy->uts_ns;
                hostname = ns->name.nodename;
@@ -60,7 +63,6 @@ void hostname_record(struct lttng_ctx_field *field,
                chan->ops->event_memset(ctx, 0,
                                LTTNG_HOSTNAME_CTX_LEN);
        }
-       rcu_read_unlock();
 }
 
 int lttng_add_hostname_to_ctx(struct lttng_ctx **ctx)
@@ -79,7 +81,7 @@ int lttng_add_hostname_to_ctx(struct lttng_ctx **ctx)
        field->event_field.type.u.array.elem_type.atype = atype_integer;
        field->event_field.type.u.array.elem_type.u.basic.integer.size = sizeof(char) * CHAR_BIT;
        field->event_field.type.u.array.elem_type.u.basic.integer.alignment = lttng_alignof(char) * CHAR_BIT;
-       field->event_field.type.u.array.elem_type.u.basic.integer.signedness = is_signed_type(char);
+       field->event_field.type.u.array.elem_type.u.basic.integer.signedness = lttng_is_signed_type(char);
        field->event_field.type.u.array.elem_type.u.basic.integer.reverse_byte_order = 0;
        field->event_field.type.u.array.elem_type.u.basic.integer.base = 10;
        field->event_field.type.u.array.elem_type.u.basic.integer.encoding = lttng_encode_UTF8;