[lttng-dev] RELEASE] LTTng modules 2.7.0-rc1
Mathieu Desnoyers
mathieu.desnoyers at efficios.com
Wed Jul 15 18:34:46 EDT 2015
The LTTng modules provide Linux kernel tracing capability to the LTTng
2.x tracer toolset.
New and noteworthy for 2.7:
* Supports kernels up to and including 4.1.x,
* Filtering is now implemented for kernel tracing. It can be used
through the same UI and API as with lttng-ust.
* Added $ctx.cpu_id context for filtering (note: also available in
lttng-ust now),
* New clock source plugin support. User-provide clock source
override can be provided as a kernel module,
* New PID tracker: specify which process IDs you want to trace,
(also available with lttng-ust)
* Wildcard support now available: can now specify e.g. 'sched_*'
to enable all scheduler events. Similar UI/API as lttng-ust.
Changelog:
2015-07-15 (Pet Fire Safety Day) lttng-ust 2.7.0-rc1
* Fix: Building the event list fails on fragmented memory
* Fix: use after free on metadata cache reallocation
* Fix: version checks for kernel 4.0
* Fix: Incorrect Ubuntu kernel patchlevel
* Fix: cpu-id context should use int type
* Implement cpu-id context
* Implement cpu_id context for filtering
* Fix: context printk mismatch on error
* Cleanup: misleading comment about deferrable timer
* Fix: arm-32 build
* Fix: Update kmem event for Ubuntu's 3.16 kernel
* Fix: RHEL 7.1 block instrumentation
* Fix: add RHEL version macros
* Fix: add missing parenthesis in ubuntu version check
* Fix: remove regmap instrumentation for kernels < 4.1
* Fix: Update kmem event for recent Ubuntu kernel
* Fix: missing statedump end event when block device listing available
* Fix: don't generate incorrect macros for debian/ubuntu version check
* Revert "Fix: build against Ubuntu kernels"
* Fix: build against Ubuntu kernels
* Add namespace info in sched_fork and statedump
* Fix: ext4 instrumentation: flags parameter did not exist prior to 3.11
* Fix: printk instrumentation: remove "condition" tracepoints
* Fix: regmap build against kernel 4.0 kernel headers
* Add mmu_valid_gen field to mmutrace events
* Fix: add missing x86 mmutrace kernel header include
* Fix: x86 mmutrace event extra field for kernels >= 3.11
* Fix: remove execute flag from kvm.h file
* Fix: build x86 kvm probes on kernels >= 4.1-rc1
* Fix: compilation on 4.1-rc1 kernel, remove unused WB_WORK_REASON
* Fix: 4.1-rc1 Linux build and regmap instrumentation
* Fix: don't clash with older Debian kernel versions
* Fix: update get_pfnblock_flags_mask wrapper for debian kernels
* Fix: discover Debian API
* Fix: Update README.md to match reality: kernels >= 2.6.36 are supported
* Fix: atomic.h wrapper for kernels < 2.6.37
* Fix: disable x86 kvm instrumentation for kernels < 2.6.38
* Fix: add missing types.h include for older kernels
* Fix: add hlist lttng wrappers
* Fix: add struct file_handle forward declaration
* Fix: string length calculation reversed user vs kernel args
* Fix: use lttng_rcu_dereference within lttng-syscalls.c
* Fix: add lttng rcu wrapper to allow tracing RCU
* Fix: double-unlock of session mutex
* Fix: check that class and instance prototype match
* Fix: lttng-events.h check function takes void
* Fix: regmap instrumentation for Linux 3.19.4 and 4.0
* Fix: kernels >= 2.6.33 put utsrelease.h in generated/
* Fix: Include utsrelease.h in lttng-kernel-version.h
* Fix: ext4 ext4_da_write_pages instrumentation for kernels < 3.11.0
* Fix: old kernels need module.h included before vermagic.h
* Fix: net instrumentation for kernels 2.6.39 and below
* Fix: version condition in makefile
* Implement wrapper around get_pfnblock_flags_mask
* Be more restrictive in provider name check
* Fix: net instrumentation namespacing
* Fix: compaction instrumentation namespacing
* Fix: Support 4.x kernel versions in Makefile
* Fix: remove stale TP_STRUCT_entry from kvm instrumentation
* Fix: add missing module.h include to lttng-probe-user.c
* Fix: use lttng hlist wrapper in wildcard and filter
* Fix: namespace asoc and kmem instrumentation
* Fix: update instrumentation after wildcard rebase
* Fix: lttng_abi_syscall_list does not need to be exported
* Migrate ARM, powerpc, MIPS syscall instrumentation to TP_FIELDS
* Remove now unused syscalls.h from lttng-modules
* Filter: start with enabler "disabled"
* Fix coverity warning about sizeof(void **) != sizeof(void *)
* Fix length type and text sequence base
* Fix: TP_FIELDS: add missing headers
* Migrate syscall instrumentation to TP_FIELDS
* Migrate tracepoint instrumentation to TP_FIELDS
* Implement filtering infrastructure
* syscall wildcards: apply syscall filtering
* Implement syscall wildcard support
* Implement tracepoint wildcard support
* Namespace all tracepoints
* Implement list.h wrapper for hlist in older kernels
* Implement listing of pid tracker content
* Implement PID tracking
* Fix: mm_page_alloc_extfrag instrumentation for kernel 3.14.36
* Fix: update writeback instrumentation for kernel 4.0+
* Fix: compaction mm_compaction_isolate_template update for Linux 4.0+
* Fix: kmem instrumentation update for mm_page_alloc_extfrag kernel 3.19.2+
* Fix: kmem instrumentation: mm_page_alloc extfrag change_ownership field
* Fix: missing parenthesis in offset_align_floor
* Fix: implement time.h wrapper for FD_ISSET
* Fix: update sched instrumentation for 3.19+ kernels
* Fix: update rcu instrumentation for 3.19+ kernels
* Fix: update scsi instrumentation for 3.19+ kernels
* Fix: update module instrumentation for 3.19+ kernels
* Fix: Add f_dentry wrapper for 3.19+ kernels
* Fix: introduce lttng_get_unused_fd() wrapper for 3.19 kernels
* Fix: lttng_this_cpu_ptr wrapper for kernel 3.19+
* Fix: Update btrfs instrumentation for 3.18 Linux kernel
* Fix compile error on kernel 3.0.101 with CONFIG_PERF_EVENTS
* Conditional compilation introduced by lttng-modules commit
* Fix: compaction instrumentation update for 3.14.x stable kernels
* Fix: context alignment not properly handled
* Fix compilation on Linux kernel >= 3.18.0
* Fix: build for architectures without HAVE_SYSCALL_TRACEPOINTS
Project website: http://lttng.org
Documentation: http://lttng.org/docs
Download link: http://lttng.org/download
--
Mathieu Desnoyers
EfficiOS Inc.
http://www.efficios.com
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