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New Effort To Upstream LTTng In The Linux Kernel Draws Criticism From Torvalds
The LTTng tracing toolkit is twenty years old this year and it's seen significant adoption by different hyperscalers and other notable organizations like IBM and Sony and Siemens beyond basic end-users and administrators for system tracing/debugging
Past efforts to get LTTng upstream rather than being based on out-of-tree modules have largely failed due to it being around 75k lines of new code and thus a major undertaking to review. Meanwhile if trying to incrementally upstream the code, Desnoyers noted that it would be a large commitment and not necessarily funding to make it feasible as well as uncertainty if it would all work out and prove worthwhile. Because honestly, that sounds like a total fairy tale to me: "the princess came along and kissed the toad, and he turned into a beautiful [prince], and they lived happily ever after".
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