[RELEASE] LTTng-modules 2.14.6 and 2.15.2 (Linux kernel tracer)

[RELEASE] LTTng-modules 2.14.6 and 2.15.2 (Linux kernel tracer)

[Mathieu Desnoyers via lttng-dev]

This is a stable release announcement for the LTTng kernel tracer,
an out-of-tree kernel tracer for the Linux kernel.

The LTTng project provides low-overhead, correlated userspace and
kernel tracing on Linux. Its use of the Common Trace Format and a
flexible control interface allows it to fulfill various workloads.

The most relevant changes in these releases introduce support for version
7.1 of the Linux kernel.

* New in these releases:

2026-06-19 LTTng modules 2.15.2
         * fix: leaked file and fd on channel create error
         * fix: backport: hrtimer: Reduce trace noise in hrtimer_start() (v6.1.175)
         * fix: ext4: widen trace event i_ino fields to u64 (v7.1)
         * fix: ext4: delete some unused tracepoint definitions (v5.13)
         * fix: ext4: enhance tracepoints during the folios writeback (v6.17)
         * fix: btrfs: tracepoints, use correct type for inode number (v4.18)
         * fix: vfs: widen trace event i_ino fields to u64 (v7.1)
         * fix: treewide: change inode->i_ino from unsigned long to u64 (v7.1)
         * fix: mm/vmscan: Convert pageout() to take a folio (v5.18)
         * fix: mm: vmscan: add cgroup IDs to vmscan tracepoints (v7.1)
         * fix: hrtimer: Drop unnecessary pointer indirection in hrtimer_expire_entry event (v7.1)
         * fix: hrtimer: Reduce trace noise in hrtimer_start() (v7.1)

2026-06-19 LTTng modules 2.14.6
         * fix: leaked file and fd on channel create error
         * fix: backport: hrtimer: Reduce trace noise in hrtimer_start() (v6.1.175)
         * fix: ext4: widen trace event i_ino fields to u64 (v7.1)
         * fix: ext4: delete some unused tracepoint definitions (v5.13)
         * fix: ext4: enhance tracepoints during the folios writeback (v6.17)
         * fix: btrfs: tracepoints, use correct type for inode number (v4.18)
         * fix: vfs: widen trace event i_ino fields to u64 (v7.1)
         * fix: treewide: change inode->i_ino from unsigned long to u64 (v7.1)
         * fix: mm/vmscan: Convert pageout() to take a folio (v5.18)
         * fix: mm: vmscan: add cgroup IDs to vmscan tracepoints (v7.1)
         * fix: hrtimer: Drop unnecessary pointer indirection in hrtimer_expire_entry event (v7.1)
         * fix: hrtimer: Reduce trace noise in hrtimer_start() (v7.1)

Project website: https://lttng.org
Documentation: https://lttng.org/docs
Download link: https://lttng.org/download

Enjoy!

Mathieu

-- 
Mathieu Desnoyers
EfficiOS Inc.
https://www.efficios.com