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From: Wedson Almeida Filho <wedsonaf@gmail.com>
To: rust-for-linux@vger.kernel.org
Cc: "Miguel Ojeda" <ojeda@kernel.org>,
	"Alex Gaynor" <alex.gaynor@gmail.com>,
	"Boqun Feng" <boqun.feng@gmail.com>,
	"Gary Guo" <gary@garyguo.net>,
	"Björn Roy Baron" <bjorn3_gh@protonmail.com>,
	"Benno Lossin" <benno.lossin@proton.me>,
	"Andreas Hindborg" <a.hindborg@samsung.com>,
	"Alice Ryhl" <aliceryhl@google.com>,
	linux-kernel@vger.kernel.org,
	"Wedson Almeida Filho" <walmeida@microsoft.com>
Subject: [PATCH v2 03/10] kbuild: use the upstream `alloc` crate
Date: Tue, 26 Mar 2024 23:35:24 -0300	[thread overview]
Message-ID: <20240327023531.187880-4-wedsonaf@gmail.com> (raw)
In-Reply-To: <20240327023531.187880-1-wedsonaf@gmail.com>

From: Wedson Almeida Filho <walmeida@microsoft.com>

Switch away from our fork of the `alloc` crate. We remove it altogether
in the next commit.

Signed-off-by: Wedson Almeida Filho <walmeida@microsoft.com>
---
 rust/Makefile                     | 16 +++-------------
 rust/kernel/str.rs                |  1 +
 scripts/generate_rust_analyzer.py |  2 +-
 3 files changed, 5 insertions(+), 14 deletions(-)

diff --git a/rust/Makefile b/rust/Makefile
index a78fcf4004b0..fcb26b53880b 100644
--- a/rust/Makefile
+++ b/rust/Makefile
@@ -61,15 +61,9 @@ core-cfgs = \
     --cfg no_fp_fmt_parse
 
 alloc-cfgs = \
-    --cfg no_borrow \
-    --cfg no_fmt \
     --cfg no_global_oom_handling \
-    --cfg no_macros \
     --cfg no_rc \
-    --cfg no_str \
-    --cfg no_string \
-    --cfg no_sync \
-    --cfg no_thin
+    --cfg no_sync
 
 quiet_cmd_rustdoc = RUSTDOC $(if $(rustdoc_host),H, ) $<
       cmd_rustdoc = \
@@ -123,7 +117,7 @@ rustdoc-compiler_builtins: $(src)/compiler_builtins.rs rustdoc-core FORCE
 # due to things that are "configured out" vs. entirely non-existing ones.
 rustdoc-alloc: private rustc_target_flags = $(alloc-cfgs) \
     -Arustdoc::broken_intra_doc_links
-rustdoc-alloc: $(src)/alloc/lib.rs rustdoc-core rustdoc-compiler_builtins FORCE
+rustdoc-alloc: $(RUST_LIB_SRC)/alloc/src/lib.rs rustdoc-core rustdoc-compiler_builtins FORCE
 	+$(call if_changed,rustdoc)
 
 rustdoc-kernel: private rustc_target_flags = --extern alloc \
@@ -219,8 +213,6 @@ rusttest: rusttest-macros rusttest-kernel
 #   - `cargo` only considers the use case of building the standard library
 #     to use it in a given package. Thus we need to create a dummy package
 #     and pick the generated libraries from there.
-#   - Since we only keep a subset of upstream `alloc` in-tree, we need
-#     to recreate it on the fly by putting our sources on top.
 #   - The usual ways of modifying the dependency graph in `cargo` do not seem
 #     to apply for the `-Zbuild-std` steps, thus we have to mislead it
 #     by modifying the sources in the sysroot.
@@ -239,8 +231,6 @@ quiet_cmd_rustsysroot = RUSTSYSROOT
 	rm -rf $(objtree)/$(obj)/test; \
 	mkdir -p $(objtree)/$(obj)/test; \
 	cp -a $(rustc_sysroot) $(objtree)/$(obj)/test/sysroot; \
-	cp -r $(srctree)/$(src)/alloc/* \
-		$(objtree)/$(obj)/test/sysroot/lib/rustlib/src/rust/library/alloc/src; \
 	echo '\#!/bin/sh' > $(objtree)/$(obj)/test/rustc_sysroot; \
 	echo "$(RUSTC) --sysroot=$(abspath $(objtree)/$(obj)/test/sysroot) \"\$$@\"" \
 		>> $(objtree)/$(obj)/test/rustc_sysroot; \
@@ -444,7 +434,7 @@ $(obj)/compiler_builtins.o: $(src)/compiler_builtins.rs $(obj)/core.o FORCE
 $(obj)/alloc.o: private skip_clippy = 1
 $(obj)/alloc.o: private skip_flags = -Dunreachable_pub
 $(obj)/alloc.o: private rustc_target_flags = $(alloc-cfgs)
-$(obj)/alloc.o: $(src)/alloc/lib.rs $(obj)/compiler_builtins.o FORCE
+$(obj)/alloc.o: $(RUST_LIB_SRC)/alloc/src/lib.rs $(obj)/compiler_builtins.o FORCE
 	+$(call if_changed_dep,rustc_library)
 
 $(obj)/build_error.o: $(src)/build_error.rs $(obj)/compiler_builtins.o FORCE
diff --git a/rust/kernel/str.rs b/rust/kernel/str.rs
index 925ced8fdc61..e1be6c5e72a9 100644
--- a/rust/kernel/str.rs
+++ b/rust/kernel/str.rs
@@ -2,6 +2,7 @@
 
 //! String representations.
 
+use crate::alloc::vec_ext::VecExt;
 use alloc::alloc::AllocError;
 use alloc::vec::Vec;
 use core::fmt::{self, Write};
diff --git a/scripts/generate_rust_analyzer.py b/scripts/generate_rust_analyzer.py
index fc52bc41d3e7..f270c7b0cf34 100755
--- a/scripts/generate_rust_analyzer.py
+++ b/scripts/generate_rust_analyzer.py
@@ -66,7 +66,7 @@ def generate_crates(srctree, objtree, sysroot_src, external_src, cfgs):
 
     append_crate(
         "alloc",
-        srctree / "rust" / "alloc" / "lib.rs",
+        sysroot_src / "alloc" / "src" / "lib.rs",
         ["core", "compiler_builtins"],
         cfg=crates_cfgs.get("alloc", []),
     )
-- 
2.34.1


  parent reply	other threads:[~2024-03-27  2:36 UTC|newest]

Thread overview: 18+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2024-03-27  2:35 [PATCH v2 00/10] Allocation APIs Wedson Almeida Filho
2024-03-27  2:35 ` [PATCH v2 01/10] rust: kernel: move `allocator` module under `alloc` Wedson Almeida Filho
2024-03-27  2:35 ` [PATCH v2 02/10] rust: alloc: introduce the `VecExt` trait Wedson Almeida Filho
2024-03-27 16:45   ` Benno Lossin
2024-03-27  2:35 ` Wedson Almeida Filho [this message]
2024-03-27  2:35 ` [PATCH v2 04/10] rust: alloc: remove our fork of the `alloc` crate Wedson Almeida Filho
2024-03-27  2:35 ` [PATCH v2 05/10] rust: alloc: introduce allocation flags Wedson Almeida Filho
2024-03-27  2:35 ` [PATCH v2 06/10] rust: alloc: introduce the `BoxExt` trait Wedson Almeida Filho
2024-03-27 17:09   ` Benno Lossin
2024-03-27 18:43     ` Wedson Almeida Filho
2024-03-27  2:35 ` [PATCH v2 07/10] rust: alloc: update `VecExt` to take allocation flags Wedson Almeida Filho
2024-03-27  3:48   ` Boqun Feng
2024-03-27 10:49     ` Miguel Ojeda
2024-03-27 18:19     ` Wedson Almeida Filho
2024-03-27  2:35 ` [PATCH v2 08/10] rust: sync: update `Arc` and `UniqueArc` " Wedson Almeida Filho
2024-03-27  2:35 ` [PATCH v2 09/10] rust: init: update `init` module " Wedson Almeida Filho
2024-03-27  2:35 ` [PATCH v2 10/10] rust: kernel: remove usage of `allocator_api` unstable feature Wedson Almeida Filho
2024-03-27 17:19   ` Benno Lossin

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