From: Jonathan Rajotte <jonathan.rajotte-julien@efficios.com>
Date: Mon, 15 May 2017 19:37:21 +0000 (-0400)
Subject: Fix: check lttng-modules ABI version for RING_BUFFER_SNAPSHOT_SAMPLE_POSITIONS support
X-Git-Tag: v2.11.0-rc1~523
X-Git-Url: https://git.lttng.org/?a=commitdiff_plain;h=6e21424e11f47edb885c7f92ae1cae69eee0ed8e;hp=6e21424e11f47edb885c7f92ae1cae69eee0ed8e;p=lttng-tools.git

Fix: check lttng-modules ABI version for RING_BUFFER_SNAPSHOT_SAMPLE_POSITIONS support

The RING_BUFFER_SNAPSHOT_SAMPLE_POSITIONS was introduced in
lttng-modules ABI version 2.3. When interacting with a kernel tracer
with ABI versions < 2.3, pass zero as monitor_timer_interval to disable
the monitoring.

Warn during sessiond startup and channel enabling if not supported.

Fixes #1101

Signed-off-by: Jonathan Rajotte <jonathan.rajotte-julien@efficios.com>
Signed-off-by: Jérémie Galarneau <jeremie.galarneau@efficios.com>
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