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authorRichard Purdie <richard.purdie@linuxfoundation.org>2018-01-28 10:36:06 +0000
committerRichard Purdie <richard.purdie@linuxfoundation.org>2018-02-06 11:06:30 +0000
commitdafa1ac8646954fa02db2a3e572adc6a957edd39 (patch)
tree28cddabf52a39914b8d707775749f1fa0ff672cf /bitbake/doc
parent2ae62f0d2b4f130a12b4b3bed38a9cd82a5bb6cf (diff)
downloadpoky-dafa1ac8646954fa02db2a3e572adc6a957edd39.tar.gz
bitbake: runqueue: Rewrite and optimize recrdepends handling
This is a performance sensitive piece of code and the shear number of recursive loops is causing a significant and unscalable performance pain point. This change moves to a two step approach, firstly generating a list of recursive dependencies for any task, then applying this to the recursive tasks, iterating over things until no further dependencies are added. It was noticed an optimisation is possible and the list of recursive tasks need not contain the taskname, only the base task id. This allows a significant performance improvement and limits the size of the resursive task lists, improving speed. (Bitbake rev: eba738ac5672556eaab4f3374c8025c322761c4a) Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>
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