From: Jérémie Galarneau <jeremie.galarneau@efficios.com>
Date: Fri, 20 Dec 2019 03:13:10 +0000 (-0500)
Subject: Fix: sessiond: check for lttng-modules ABI 2.1 rather than 2.8
X-Git-Tag: v2.11.2~1
X-Git-Url: https://git.lttng.org./?a=commitdiff_plain;h=6ae77d9fda9cd7e241e7a1f2ab2492fb48c3e625;p=lttng-tools.git

Fix: sessiond: check for lttng-modules ABI 2.1 rather than 2.8

The clear patchset introduces a regression that breaks session
rotations when the kernel domain is used. The 2.8 lttng-modules ABI
does not exist yet.

The packet sequence number functionality was introduced in LTTng 2.8,
which introduced the 2.1 kernel tracer ABI.

Signed-off-by: Jérémie Galarneau <jeremie.galarneau@efficios.com>
Change-Id: Ief97e7e25f6f0fcb5b5b97b39abb417c1eb327ec
---

diff --git a/src/bin/lttng-sessiond/kernel.c b/src/bin/lttng-sessiond/kernel.c
index b5c4a5e12..5fc6ae437 100644
--- a/src/bin/lttng-sessiond/kernel.c
+++ b/src/bin/lttng-sessiond/kernel.c
@@ -1443,9 +1443,10 @@ int kernel_supports_ring_buffer_packet_sequence_number(void)
 	}
 
 	/*
-	 * Packet sequence number was introduced in 2.8
+	 * Packet sequence number was introduced in LTTng 2.8,
+	 * lttng-modules ABI 2.1.
 	 */
-	if (abi.major >= 2 && abi.minor >= 8) {
+	if (abi.major >= 2 && abi.minor >= 1) {
 		/* Supported */
 		ret = 1;
 	} else {