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authorJoshua Watt <jpewhacker@gmail.com>2019-01-04 10:20:15 -0600
committerRichard Purdie <richard.purdie@linuxfoundation.org>2019-01-07 14:38:53 +0000
commitd889acb4f8f06f09cece80fa12661725e6e5f037 (patch)
tree716df19537b8d042cbd11796599b0c5561a35089 /meta/recipes-kernel
parent1c14b6969e58b51a325c1c1acf9c96e55675035c (diff)
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sstate: Implement hash equivalence sstate
Converts sstate so that it can use a hash equivalence server to determine if a task really needs to be rebuilt, or if it can be restored from a different (equivalent) sstate object. The unique hashes are cached persistently using persist_data. This has a number of advantages: 1) Unique hashes can be cached between invocations of bitbake to prevent needing to contact the server every time (which is slow) 2) The value of each tasks unique hash can easily be synchronized between different threads, which will be useful if bitbake is updated to do on the fly task re-hashing. [YOCTO #13030] Signed-off-by: Joshua Watt <JPEWhacker@gmail.com> Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>
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