[RELEASE] LTTng-modules 2.13.18 (Linux kernel tracer)

[Mathieu Desnoyers]

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

This 2.13.18 release mainly introduces support for newer vanilla and
distribution kernels. It also updates the generated system call
instrumentation for 32-bit ARM, 64-bit ARM, x86-32, and x86-64
so the more recent system calls (up to kernel 6.0) are instrumented
in with detailed semantics.

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.

* Detailed change log:

2025-04-14 (National Gardening Day) 2.13.18
        * Fix: trace_balance_dirty_pages parameters changed in Linux v6.14.2
        * Fix: trace_balance_dirty_pages parameters changed in Linux v6.15-rc1
        * Fix: Generic `compat_sys_rt_sigaction` did not exist prior to Linux 3.9
        * fix: Add missing 'pselect6_time32' and 'ppoll_time32' syscall overrides
        * Build fix: arm64: incomplete landlock_rule_type type
        * Fix: define old_sigaction as compat_old_sigaction in arm32 compat
        * Fix: Use ifdef for CONFIG_COMPAT_OLD_SIGACTION
        * Fix: system call instrumentation build failure on v3.0-v3.10 RT kernel
        * Fix: add missing typedef and forward declarations for old kernels
        * Add generated arm-32 syscall instrumentation for kernel 6.0.7
        * Add generated x86-32 syscall instrumentation for kernel 6.0.7
        * Fix: define old_sigaction as compat_old_sigaction in x86-32 compat
        * Add generated arm-64 syscall instrumentation for kernel 6.0.7
        * Add generated x86-64 syscall instrumentation for kernel 6.0.7
        * syscall instrumentation: add missing forward declarations for old kernels
        * Revert "Fix: powerpc builds with linux v6.13"
        * Fix: jbd2 tid type changed in SLE15 SP5
        * Fix: migratepages removed from compaction_migratepages in SLE15 SP5
        * Fix: block request field `rq_disk` removed in SLE15 SP5
        * Fix: REQ_OP_WRITE_SAME removed in SLE15 SP5
        * Fix: genhd.h removed in SLE15 SP5
        * Fix: Missing scsi/scsi_request.h with SLE15 SP5
        * Fix: powerpc builds with linux v6.13

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