X-Git-Url: https://git.lttng.org/?p=lttng-tools.git;a=blobdiff_plain;f=ltt-sessiond%2Fkernel-ctl.c;h=3dd146dd4b9792fe6754ef1136a49aef6b111c53;hp=09a3763eb835c30aaaa25fca4081f27d34aeb881;hb=d0254c7c0bb43c62abafdf866b16de0da1ad4d5d;hpb=9f19cc17a942a7089fc209a2527d8b2960c83a00

diff --git a/ltt-sessiond/kernel-ctl.c b/ltt-sessiond/kernel-ctl.c
index 09a3763eb..3dd146dd4 100644
--- a/ltt-sessiond/kernel-ctl.c
+++ b/ltt-sessiond/kernel-ctl.c
@@ -41,7 +41,12 @@ int kernel_add_channel_context(struct ltt_kernel_channel *chan,
 	DBG("Adding context to channel %s", chan->channel->name);
 	ret = kernctl_add_context(chan->fd, ctx);
 	if (ret < 0) {
-		perror("add context ioctl");
+		if (errno != EEXIST) {
+			perror("add context ioctl");
+		} else {
+			/* If EEXIST, we just ignore the error */
+			ret = 0;
+		}
 		goto error;
 	}
 
@@ -403,6 +408,23 @@ void kernel_wait_quiescent(int fd)
 	}
 }
 
+/*
+ *  kernel_calibrate
+ */
+int kernel_calibrate(int fd, struct lttng_kernel_calibrate *calibrate)
+{
+	int ret;
+
+	ret = kernctl_calibrate(fd, calibrate);
+	if (ret < 0) {
+		perror("calibrate ioctl");
+		return -1;
+	}
+
+	return 0;
+}
+
+
 /*
  *  kernel_metadata_flush_buffer
  *