Show pageOld revisionsBacklinksBack to top This page is read only. You can view the source, but not change it. Ask your administrator if you think this is wrong. ====== DTrace TODO ====== This page is for brainstorming and coordinating efforts with DTrace development. Anyone who has and idea/wish can add an item and if you work on one of those you grab it. You can always mail the [[http://lists.freebsd.org/mailman/listinfo/freebsd-dtrace|freebsd-dtrace mailing list]] in case you do not have write access to the wiki, have questions or want to work on this but are not (yet;-) a %%FreeBSD%% committer. Most of these problems are specific to %%FreeBSD%%'s DTrace implementation, but some of them are upstream (illumos) issues as well. ===== DTrace TODO items ===== ^ added by ^ responsible ^ state ^ task ^ | JohnBirrell | | | Implement toxic ranges. | | JohnBirrell | | | Implement stop() action. | | JohnBirrell | | | Port MDB DTrace-related dcmds to %%FreeBSD%% debugger. | | JohnBirrell | | | Credentials and privileges need a lot of work. | | JohnBirrell | | | There are lots of places in the build where the ctfconvert and ctfmerge tools complain about the objects they are processing. Those issues need to be resolved. | | StaceySon | | | Add missing built-in variables: ipl, zonename (jailname) | | PedroGiffuni | | | The DTrace userland tool has to run as root: it would be beneficial to have it use capsicum(4). | | MarkJohnston | MarkJohnston, RuiPaulo | wip | Get libproc to look up symbols through a .gnu_debuglink ELF section, so that userland DTrace works properly with WITH_DEBUG_FILES. This was partially implemented in r278658 but there are some shortcomings: we hard-code the debug dir path, and we ignore symbols from the base file if a debug file exists. This can mean that the dynamic symbol table is ignored. | | MarkJohnston | | | dtrace(1) apparently has various troubles when run within in a jail. | | MarkJohnston | MarkJohnston | wip | Get the DTrace test suite down to 0 failures. On my machine it's currently at 948/999 tests passing. Many of the failing tests are for userland DTrace. I've also fixed some test issues caused by various Solarisms. Also find a good place to add regression tests for issues found in %%FreeBSD%%. Currently they can be run under Kyua from /usr/tests/cddl/usr.sbin/dtrace if the system was build with WITH_DTRACE_TESTS in src.conf(5). | | MarkJohnston | | | Port the cpc provider to %%FreeBSD%%, or implement something similar. | | MarkJohnston | | | There is a bunch of ports that have USDT probes that aren't enabled on %%FreeBSD%%. Find them and add support. An easy place to start is tcl, a less easy place to start is perl, and a less less easy place to start is openJDK. Email markj@freebsd.org for the first two, I've made some progress on them already. | | MarkJohnston | | | Submit DTrace patches back to illumos. There are some bug fixes in our DTrace implementation that are not specific to %%FreeBSD%%. They are minor for the most part, but should be upstreamed. Maybe the illumos people don't mind having #ifdef __%%FreeBSD%%__ in their code? :) | | MarkJohnston | | | Improve documentation. We now have man pages for some providers (e.g. dtrace_ip(4%%))%%. | | MarkJohnston | RuiPaulo | | plockstat provider. markj: also see https://people.freebsd.org/~markj/patches/isi_plockstat.diff | | MarkJohnston | | | Fix dtrace kernel module unloads. At the moment this frequently causes kernel crashes, making it difficult to test changes to the DTrace kernel code. | | GeorgeNevilleNeil | | wip | Add the fds[] array | | HowardSu | | | Add ARM support for fasttrap provider | | EdMaste | | | CTF has a limit on the number of values in an enum. See r333872. | review = needs code review, wip = "work in progress" ===== Available patches ===== * [[http://people.freebsd.org/~sson/dtrace/|sson's dtrace patches]] ===== References ===== * DWARF: devel/dwarfdump http://dwarfstd.org/ ---- {{tag>Dtrace}} {{tag>Todo Stale}} dtracetodo.txt Last modified: 2020/06/20 07:24by KubilayKocak