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Thu Sep 09 2021 Kris Van Hees <kris.van.hees@oracle.com> - 2.0.0-1.7
- Consolidated developent of newly ported features. [Orabug: 33334517]
- Implement argument retrieval for SDT probes. [Orabug: 33072438]
- Introduce 'bpflog' runtime option to request BPF verifier log.
- Implementation improvements for memry copy operations.
- Fix type alignment handling for enums.
- Fix ERROR-in-BEGIN probe handling.
- Transition from variable-length string size to 2-byte string size.
- Fix size of string data in the trace output buffer.
- Fix data size for value copy.
- Add support for strjoin() subroutine.
- Add support for substr() subroutine.
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Fri Jun 18 2021 Kris Van Hees <kris.van.hees@oracle.com> - 2.0.0-1.6
- Consolidated developent of newly ported features. [Orabug: 33037106]
- Implement built-in variables: probeprov, probemod, probefunc, probename.
- Implement built-in variables: caller, stackdepth, ucaller, ustackdepth,
errno, walltimestamp. (Eugene Loh)
- Implement actions: stack(), ustack(). (Eugene Loh)
- Implement subroutine: strlen().
- Implement option: -Z (partial). (Eugene Loh)
- Added support for string constants and string values.
- Added support for strings to trace().
- Fixed storage size determination for global and local variables.
- Improved storage layout for global and local variables.
- Mark aggregation actions as non-data recording actions. (Eugene Loh)
- Load string constant table into the 'strtab' BPF map.
- Load probe description data into the 'probes' BPF map.
- Consolidate all string hash functions into a single hash function.
- Implement variable length integer support.
- Store the length of each string as a variable length integer inline with its
character stream.
- Improve memcpy() internal BPF function.
- Testsuite improvements. (Eugene Loh)
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Mon Apr 12 2021 Kris Van Hees <kris.van.hees@oracle.com> - 2.0.0-1.5.1
- Memory corruption fix in pid probe discovery.
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Fri Apr 09 2021 Kris Van Hees <kris.van.hees@oracle.com> - 2.0.0-1.5
- Implement the ERROR probe. [Orabug: 32749498]
- Add checks in BPF programs for division by zero and NULL pointer dereference.
[Orabug: 32749498]
- Implement the pid provider for userspace function boundary tracing.
[Orabug: 32749504]
- Implement the -w option to explicitly allow destructive actions.
[Orabug: 31632678]
- Add support in translators for more than two kernel variants. (Nick Alcock)
[Orabug: 32748968]
- Switch from condition variable to eventfd for process death notifications.
[Orabug: 32125018]
- Implement normalize() and denormalize() actions.
- Reworking of kernel tracepoint based providers. [Orabug: 32125018]
- Reworking of global and local variable storage to allow for values sizes
beyond 8 bytes. (Eugene Loh) [Orabug: 32125018]
- Implement -xbpflogsize option. (Eugene Loh) [Orabug: 32125018]
- Improvements to -xdisasm support. (Eugene Loh) [Orabug: 32125018]
- Fix bitfield operations. (Eugene Loh) [Orabug: 32125018]
- Sample scripts for building DTrace on Ubuntu. (David McLean)
- Coding style updates. (Eugene Loh)
- Testsuite updates.
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Wed Dec 09 2020 Kris Van Hees <kris.van.hees@oracle.com> - 2.0.0-1.4
- Implement aggregation support code for both producer and consumer.
[Orabug: 32254734]
- Implement aggregation functions: count(), lquantize().
- Implement aggregation functions: avg(), llquantize(), quantize().
(Eugene Loh)
- Implement aggregation functions: max(), min(), stddev(), sum().
(David McLean)
- Implement the printa() action.
- Rework BPF code generation to use emit*() macros.
- Fix bitwise negation. (Eugene Loh) [Orabug: 32125018]
- Fix reporting when all quantize() data is in the last bin. (Eugene Loh)
[Orabug: 32148161]
- Load pre-compiled BPF functions even if they do not have relocations.
(Eugene Loh)
- Testsuite updates.
- Fix END probe execution when consumer stops the producer.
- Force use of bash as shell.
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Thu Oct 01 2020 Kris Van Hees <kris.van.hees@oracle.com> - 2.0.0-1.3
- Implement the freopen() action. (Eugene Loh)
- Implement the system() action. (Eugene Loh)
- Implement the id built-in variable. (David McLean)
- Implement the ppid built-in variable. (Eugene Loh)
- Improve annotations in the disassembler.
- Implement proper BEGIN and END probe semantics.
- Correct exit() action semantics.
- Correct signed divide and modulo operations. (Eugene Loh)
- Correct code generation for post-decrement expressions. (Eugene Loh)
- Various compilation fixes.
- Better support for different distributions and compiler versions.
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Thu Aug 06 2020 Eugene Loh <eugene.loh@oracle.com> - 2.0.0-1.2
- Ensure a minimum locked-memory limit for BPF.
- int8_t is now always signed, even on platforms where char is unsigned.
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Fri Jul 24 2020 Kris Van Hees <kris.van.hees@oracle.com> - 2.0.0-1.1
- Implement profile-n and tick-n probes. (Eugene Loh)
- Implement the printf() action.
- Implement the raise() action.
- Support probe specifications with wildcards.
- Support multiple clauses for each probe.
- Support built-in variables: arg0 through arg9 (for probes that provide
arguments), curcpu curthread, epid, gid, pid, tid, uid, and timestamp.
- Various memory management fixes.
- Register leak fixes.
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Thu Apr 30 2020 Kris Van Hees <kris.van.hees@oracle.com> - 2.0.0-1.0
- Implement BEGIN and END probes. (Eugene Loh) [Orabug: 31220513]
- Implement a probe cleanup mechanism for providers.
(Eugene Loh) [Orabug: 31220519]
- Implement the exit() action. [Orabug: 31220520]
- Implement the flowindent option. [Orabug: 31220522]
- Implement the -xdisasm=n option. [Orabug: 31220524]
- Implement linking of precompiled BPF functions. [Orabug: 31220525]
- Fix memory leaks and minor uninitialized-data bugs. [Orabug: 31220517]
- Fix load-before-store BPF verifier errors for local variables.
[Orabug: 31220527]
- Fix post-increment code generation. [Orabug: 31220528]
- Fix register clobbering and implement register spilling. [Orabug: 31187562]
- Add error and drop tag verification for tests. [Orabug: 31220521]
- Various code cleanup and errata release preparation. [Orabug; 31220516]
- Ensure that bpf_dlib.o is installed.
- Fix the creation of FBT return probes.
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Tue Mar 10 2020 Kris Van Hees <kris.van.hees@oracle.com> - 2.0.0-0.8
- Sync with latest development code.
- Implement perf event output buffer management and processing.
- Introduce dt_calloc() to use in all array allocations.
- Provide support for building against libdtrace-ctf and libctf, with
preference given to libctf (if available).
- Implement association of BPF programs with probe events.