Fix: statedump handle oom case, handle errors

[lttng-modules.git] / ChangeLog

2014-04-08 LTTng modules 2.4.1
	* Fix: rcu instrumentation: add const qualifier to char pointers
	* Fix: add missing module version information
	* Fix: block instrumentation: < 3.14 don't have bi_iter
	* Fix: update btrfs instrumentation to kernel 3.14
	* Fix: update block layer instrumentation to kernel 3.14
	* Fix file permissions for lttng-statedump-impl.c

2014-02-28 (Public Sleeping Day) LTTng modules 2.4.0
	* Fix: load state dump even if work-around lookup fails
	* Cleanup: fix comment
	* Fix: correctly version kvm events to build against v3.0 kernel
	* Add extraversion (e.g. -rc4) to lttng-tracer modinfo

2014-02-14 LTTng modules 2.4.0-rc4
	* Fix: use after free in ring buffer clients
	* Fix: Add statedump exit so module is not permanent
	* Cleanup: move callback init to static initialization
	* Fix: OOT lttng-statedump tracepoints not visible with signed kernels

2014-01-29 LTTng modules 2.4.0-rc3
	* Fix: tracepoint event name mapping at unregister
	* Fix: tracepoint name remapping
	* Fix: enable event error path memory corruption
	* Update kvm instrumentation to Linux 3.13
	* Update sched instrumentation to Linux 3.13
	* Fix: provide more precise error report for enable event
	* Fix: quote event name in metadata
	* Add version info to lttng-tracer.ko modinfo

2013-12-10 LTTng modules 2.4.0-rc2
	* Fix: client_packet_header() uses wrong packet
	* Cleanup: fix typo in ring buffer backend comment
	* Fix: handle unknown event type parameter
	* Fix: eliminate timestamp overlap between packets
	* gcc blacklist: only apply when building with gcc
	* Blacklist ARM gcc 4.8.0, 4.8.1, 4.8.2

2013-11-15 LTTng modules 2.4.0-rc1
	* Update ext4 instrumentation to Linux 3.12
	* Update RCU instrumentation to Linux 3.12
	* Update btrfs instrumentation to 3.12 kernel
	* Update vmscan instrumentation to Linux 3.12
	* update: kmem instrumentation 3.12 kernel support
	* lttng-statedump-impl: Use generic hard irqs for Linux >= 3.12
	* lttng-statedump-impl: Fix lttng_list_interrupts for empty implementation
	* Import fix from LTSI: 3.4+ RT kernels use CONFIG_PREEMPT_RT_FULL
	* Add new tracepoint in KVM
	* Blacklist kernels 3.10.13 and 3.11.2
	* LTTng trace-clock: shrink kernel blacklist
	* Metadata flush writes data from the cache
	* Per-stream ioctl to get the current timestamp
	* LTTng ringbuffer ABI calls for index generation
	* Prepare LTTng override of ring buffer fops
	* Blacklist Linux kernels 3.10+

2013-09-03 LTTng modules 2.3.0
	* Fix: metadata stream should not reference session
	* Fix: btrfs: support 3.11 Linux kernel
	* statedump: remove KERN_DEBUG messages
	* Fix: ext4: add missing tracepoints for 3.11 kernel
	* Fix: ext4: Linux 3.11 support
	* Fix: ext3: 3.11 Linux support
	* Fix: statedump nsproxy 3.11 Linux support

2013-08-30 LTTng modules 2.3.0-rc2
	* Fix: metadata lttng channel refcount
	* README: lttng-modules incompatible with lttng 0.x patchset

2013-07-17 LTTng modules 2.3.0-rc1
	* Fix: kvm x86 probes side-effect
	* Fix: allow get/put subbuf in loop for metadata stream
	* Add support for kvm x86 specific tracepoints
	* Add mainline headers for kvm x86 tracepoints
	* Remove old 3.0.4 x86-64 extracted syscall info
	* Point the x86-64 overrides to newly extracted 3.10-rc7 files
	* Add syscalls extracted files from a 3.10-rc7 kernel
	* Improve documentation of the syscall extractor script
	* Fix: double length of __dynamic_len array
	* Fix printk instrumentation
	* Introduce __dynamic_array_enc_ext_2() and tp_memcpy_dyn_2()
	* Fix: ring buffer: get_subbuf() checks should be performed on "consumed" parameter
	* Fix: SWITCH_FLUSH new sub-buffer checks
	* Fix: ring buffer: handle concurrent update in nested buffer wrap around check
	* Cleanup: lib_ring_buffer_switch_new_end() only calls subbuffer_set_data_size()
	* Revert "Cleanup: ring buffer: remove lib_ring_buffer_switch_new_end()"
	* Fix: handle writes of length 0
	* Fix: ring buffer: RING_BUFFER_FLUSH ioctl buffer corruption
	* Cleanup: ring buffer: remove lib_ring_buffer_switch_new_end()
	* print warning and return -EBUSY on double get_subbuf()
	* Add header to fix compilation of syscalls-extractor on 3.9 kernel
	* Fix: don't do 0 byte event reservation
	* Document that payload size need to be greater than 0
	* Fix build and load against linux-2.6.33.x
	* Fix: add missing CONFIG_COMPAT around lib_ring_buffer_compat_ioctl
	* Metadata cache and multiple metadata channels
	* fix block instrumentation probe signature mismatch for 3.9.x kernels
	* fix: block instrumentation: NULL pointer dereference
	* Update rcu instrumentation to 3.9.[0-4]
	* Fix CPU hotplug section mismatches
	* Add system calls definitions for powerpc-32
	* Remove bashism in lttng-syscalls-generate-headers.sh
	* Update ARM (32 bit) syscall tracepoints to 3.4

2013-05-09 LTTng modules 2.2.0-rc2
	* Remove useless lttng_metadata probe
	* Fix: warning kvm_trace_exit_reason redefined for 3.9 kernel
	* Fix: 3.9.0 block layer instrumentation build
	* Revert "Stop build if CONFIG_TRACEPOINTS is not set"
	* Stop build if CONFIG_TRACEPOINTS is not set
	* Add comments to endifs.
	* Fix: remove ARM set_tls system call override
	* Cleanup: arm sys_mmap whitespace
	* Clean up using global_dirty_limit wrapper for writeback probe

2013-03-29 LTTng modules 2.2.0-rc1
	* Update README
	* Fix: vmscan instrumentation build
	* writeback instrumentation: remove duplicated structures
	* block: update instrumentation to 3.9 rc kernel
	* rcu: update to 3.9 rc kernel instrumentation
	* workqueue instrumentation: remove duplicated structures
	* Rename odd event names
	* Introduce API to remap event names exposed by LTTng
	* lttng-module: sched.h: Fix compilation on 3.9 kernel
	* Fix Linux 3.8 btrfs probe warning
	* Fix Linux 3.8 ext4 probe support
	* Fix 3.8 kernel support: namespace lttng_is_signed_type()
	* Fix: don't flush-final for offset 0 if reader is on sub-buffer
	* instrumentation sched: add missing fork pid info
	* Fix check in lttng_strlen_user_inatomic
	* instrumentation: sync with Linux commit a1ce392
	* Fix: statedump: missing locking, use lttng_iterate_fd
	* Implement lttng_iterate_fd wrapper
	* Instrumentation cleanup: kmem events should print hex pointers
	* Fix compilation of ext4 and btrfs tracepoints on 2.6.40 kernels
	* Fix: statedump hang/too early completion due to logic error
	* Fix: statedump hang due to incorrect wait/wakeup use
	* put_ulong calls in lib_ring_buffer_compat_ioctl() should be compat
	* wrapper/perf.h: Fix kernel version condition
	* Add new kernel probes instrumentation
	* Update kernel probes to more detailed match to kernel versions
	* Fix possible kernel build errors with linux-patches
	* Add missing MIT license text to 3 files under this license
	* Update sites using kernel version checking macro to new range
	* Make upper bound of kernel version checking macro exclusive
	* sock instrumentation: fix fields to get referenced values
	* ext3 instrumentation: fix of assignment code conversion
	* sched instrumentation: rename "pid" fields in sched_process_exec
	* Remove remaining semicolons in TP_fast_assign blocks
	* Fix compilation for 3.0 kernels that are named 2.6.40
	* Fix compilation for 3.0 branch (>= 3.0.39)
	* Add kernel version checking macro
	* Remove semicolons in TP_fast_assign blocks
	* Add ifdefs to net probe to support Linux 2.6.39
	* Add kernel probes for supplementary subsystems
	* Check if interrupt action name is not null in statedump
	* Fix exec instrumentation: only for kernels 3.4.0 and higher
	* Add TRACE_EVENT(sched_process_exec) to sched.h
	* lib/ringbuffer/frontend_api.h: Include linux/prefetch.h.
	* Fix warning with 3.6.0 kernel
	* ABI with support for compat 32/64 bits
	* Perform calculation on bit size in 64-bit
	* Use uint64_t for packet header content size and packet size
	* Fix: compat layer only on supported architectures
	* Fix ring buffer 32/64 bits compat
	* Fix cleanup: move lttng-tracer-core.h include to lib ringbuffer config.h
	* Fix ring_buffer_frontend.c: missing include lttng-tracer-core.h
	* Fix: statedump missing check for NULL namespace

2012-09-10 LTTng modules 2.1.0-rc1
	* fix timestamps on architectures without CONFIG_KTIME_SCALAR
	* Support for linux kernels 2.6.32 through 2.6.37
	* Document limitation of vppid and ppid context wrt eventual RCU instrumentation
	* Cleanup: no need to hold RCU read-side lock when reading current nsproxy
	* Add env hostname information
	* Fix: lttng_statedump_process_state for each PID NS has infinite loop
	* lttng_statedump_process_state for each PID NS
	* Support the hostname context
	* Fix: statedump namespaced pid, tid and ppid
	* Fix: statedump: disable vm maps enumeration
	* Fix: ensure userspace accesses are done with _inatomic
	* Fix: vppid context should test for current nsproxy
	* Add MIPS system call support
	* Change mode of lttng-syscalls-generate-headers.sh to 755
	* cleanup: fix typo in syscall instrumentation header
	* Cleanup: remove trailing whitespace in README
	* trace event: introduce TP_MODULE_NOAUTOLOAD and TP_MODULE_NOINIT
	* LTTng: probe-statedump: add #include <linux/sched.h>
	* fix: signal_generate event should print utf8 for comm field
	* Makes write operation a parameter for tp_memcpy macro
	* Add coding style document
	* Update instrumentation/events README file
	* Add makefile target for preprocessor
	* Fix: free_event_id check should compare unsigned int with -1U
	* Use unsigned long type for events discarded counter
	* Fix: update signal instrumentation for 3.4 kernel
	* LTTng Modules ARM syscall instrumentation
	* Fix: generate header missing echo -e for escape chars
	* Fix: add missing uaccess.h include (for ARM)
	* README: Document that CONFIG_MODULES is required
	* Fix: README typo
	* Fix: document required and optional kernel config options in README

2012-03-29 LTTng modules 2.0.1
	* Fix: is_compat_task !CONFIG_COMPAT compile error on kernels >= 3.3

2012-03-20 LTTng modules 2.0.0
	* First STABLE version
	* Add version name

2012-03-20 LTTng modules 2.0.0-rc4
	* Update README and add version name place-holder

2012-03-16 LTTng modules 2.0.0-rc3
	* Fix clock offset 32-bit multiplication overflow
	* Fix : wrong assign of fd in state dump
	* License cleanup, ifdef namespace cleanup
	* Fix: ensure power of 2 check handles 64-bit size_t entirely

2012-03-02 LTTng modules 2.0.0-rc2
	* Fix: dmesg printout should not print metadata warnings
	* Fix: use transport name as channel name
	* Fix: Return -EINVAL instead of print warning if non power of 2 size/num_subbuf

2012-02-20 LTTng modules 2.0.0-rc1
	* Standardize version across toolchain
	* statedump: Use old macro name for kernel 2.6.38

2012-02-16 LTTng modules 2.0-pre15
	* Add timer instrumentation
	* fix: need to undef mainline define
	* fix: Include signal.h instead of irq.h for prototype match check
	* Add signal instrumentation

2012-02-16 LTTng modules 2.0-pre14
	* syscall tracing: sys_getcpu
	* Add sys_clone x86 instrumentation
	* statedump: fix include circular dep
	* Implement state dump

2012-02-09 LTTng modules 2.0-pre13
	* Update README
	* environment: write sysname, release, version, domain to metadata
	* Allow open /proc/lttng for read & write

2012-02-02 LTTng modules 2.0-pre12
	* Add x86 32/64 execve syscall instrumentation override
	* Remove unused defines
	* Add padding to ABI
	* Use LTTNG_KERNEL_SYM_NAME_LEN
	* Update version to 1.9.9
	* Add missing double-quotes to clock uuid
	* clock: read bootid as clock monotonic ID
	* Fix comment
	* Cleanup comment
	* clock: output clock description in metadata
	* Properly fix the timekeeping overflow detection
	* Fix init bug
	* rename lib-ring-buffer to lttng-lib-ring-buffer
	* Remove #warning
	* Mass rename: ltt_*/ltt-* to LTTNG_*/LTTNG-*
	* Update TODO
	* Update TODO
	* Remove debugfs file (keep only proc file)
	* Rename lttng-debugfs-abi files to lttng-abi

2011-12-13 LTTng modules 2.0-pre11
	* Fix OOPS caused by reference of config pointer
	* Gather detailed info from x86 64 32-bit compat syscall instrumentation
	* lttng lib: ring buffer move null pointer check to open
	* lttng lib: ring buffer remove duplicate null pointer
	* lttng lib: ring buffer: remove stale null-pointer
	* lttng wrapper: add missing include to kallsyms wrapper
	* lttng: cleanup one-bit signed bitfields
	* Add TODO file
	* Update symbol name length max size to 256
	* Fix last modifications to string_from_user operations
	* Document that depmod needs to be executed by hand
	* Fix strlen_user fault space reservation
	* Fix tp_copy_string_from_user handling of faults
	* Disable block layer tracing support for kernels < 2.6.38
	* lttng context: perf counter, fix 32-bit vs 64-bit field size bug
	* Update trace clock warning to match the current development plan
	* ringbuffer: make ring buffer printk less verbose
	* Makefile: do not run depmod manually

2011-09-30 LTTng modules 2.0-pre10
	* x86-32: override sys_mmap syscall instrumentation
	* Fix cast warning

2011-09-29 LTTng modules 2.0-pre9
	* x86 32 syscalls: fix !CONFIG_UID16
	* Use __string_from_user
	* Add __string_from_user
	* Rename "comm" context to "procname"
	* Fetch "type" name field for mount syscall
	* Create common override file for all architectures
	* Shrink stack size usage
	* Cleanup: remove unused lttng-compat-syscalls.c file
	* Support detailed compat syscalls on x86_64
	* Fix syscall table
	* Add disabled compat syscalls detail (work in progress)
	* Add config compat support for detailed x86_32 syscalls
	* Handle newer 3.1+ perf API
	* Add dummy x86-32 override headers
	* Bind x86-32 syscall headers
	* Add x86-32 syscall headers
	* Add check for KALLSYMS_ALL in syscall extraction script
	* Automate string extraction for syscalls
	* Automate syscall filename/pathname extraction
	* Add exit to ring_buffer_frontend so module is unloadable
	* Add sys_open filename (x86_64)
	* Add missing memcpy callback
	* copy_from_user and memset
	* Add missing alignment after header write
	* lib ring buffer: add frontend init as module_init
	* lib ring buffer frontend: add missing lock initialization
	* ARM: Set bit 0 for thumb mode in kallsyms_lookup_name returned address (missing file)
	* ARM: Set bit 0 for thumb mode in kallsyms_lookup_name returned address
	* Create override for sys_mmap
	* Rename syscalls -> syscall in LTTng ABI
	* Use different event name for compat syscalls
	* Allow trace syscall table override
	* Add dummy override files
	* syscall detail: add override capability
	* Add pointer pretty-print heuristics
	* Add __field_hex
	* Rename sys exit errno into ret
	* Enable detailed syscalls only for native x86_64
	* Use "unknown" for compat syscalls
	* Disable x86-64 specific detailed syscalls for now, until we deal with 32-bit compat
	* Fix syscall exit
	* Fix sys exit
	* Only enable detailed syscalls for x86_64 for now
	* Merge unknown syscall method with extended detail method
	* Add underscore prefix before event names
	* Add syscalls pointers detailed syscall tracing
	* Use perl for regexp
	* Support generation of syscall probes for those with pointers
	* Support detailed syscalls with 0 arguments
	* detailed syscall tracing (work in progress)
	* Expose /proc/lttng file
	* Implement detailed syscall event probe
	* Disable perf build for < 2.6.33 kernels
	* Syscall detail mode: generate syscall table
	* block instrumentation: write cmd as hex sequence
	* lttng-events TRACE_EVENT generator cleanup
	* block layer instrumentation: fix cmd field
	* Remove 0 args syscalls for now from type-aware syscall cb generator
	* Generate trace syscall table macros
	* Put syscall tracing without arg types back in place
	* Detailed system call tracing (TRACE_EVENT() generation for integer support)
	* lttng events probes: don't clash with "ctx" variable name
	* lib ring buffer must take private pointer copy before decrementing refcount

2011-08-16 LTTng modules 2.0-pre8
	* Fix metadata buffer wait/wakeup

2011-08-12 LTTng modules 2.0-pre7
	* Add missing module refcount to lttng_tracepoint_list_fops
	* Add license info about lib/ringbuffer/ring_buffer_mmap.c being GPLv2