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authorJohannes Berg <johannes.berg@intel.com>2022-10-10 11:03:31 +0200
committerJohannes Berg <johannes.berg@intel.com>2022-10-10 11:03:43 +0200
commitdfd2d876b3fda1790bc0239ba4c6967e25d16e91 (patch)
tree45c2ec4b25afdf7b521dec642f6b75112bb401a3 /rust/alloc/README.md
parenta790cc3a4fad75048295571a350b95b87e022a5a (diff)
parent10d5ea5a436da8d60cdb5845f454d595accdbce0 (diff)
Merge remote-tracking branch 'wireless/main' into wireless-next
Pull in wireless/main content since some new code would otherwise conflict with it. Signed-off-by: Johannes Berg <johannes.berg@intel.com>
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+# `alloc`
+
+These source files come from the Rust standard library, hosted in
+the <https://github.com/rust-lang/rust> repository, licensed under
+"Apache-2.0 OR MIT" and adapted for kernel use. For copyright details,
+see <https://github.com/rust-lang/rust/blob/master/COPYRIGHT>.
+
+Please note that these files should be kept as close as possible to
+upstream. In general, only additions should be performed (e.g. new
+methods). Eventually, changes should make it into upstream so that,
+at some point, this fork can be dropped from the kernel tree.
+
+
+## Rationale
+
+On one hand, kernel folks wanted to keep `alloc` in-tree to have more
+freedom in both workflow and actual features if actually needed
+(e.g. receiver types if we ended up using them), which is reasonable.
+
+On the other hand, Rust folks wanted to keep `alloc` as close as
+upstream as possible and avoid as much divergence as possible, which
+is also reasonable.
+
+We agreed on a middle-ground: we would keep a subset of `alloc`
+in-tree that would be as small and as close as possible to upstream.
+Then, upstream can start adding the functions that we add to `alloc`
+etc., until we reach a point where the kernel already knows exactly
+what it needs in `alloc` and all the new methods are merged into
+upstream, so that we can drop `alloc` from the kernel tree and go back
+to using the upstream one.
+
+By doing this, the kernel can go a bit faster now, and Rust can
+slowly incorporate and discuss the changes as needed.