8af7a501 - rust: jump_label: skip formatting generated file

Wed, 20 Nov 2024 17:59:16 +0000

rust: jump_label: skip formatting generated fileAfter a source tree build of the kernel, and having used the `RSCPP`rule, running `rustfmt` fails with: error: macros that expand to items must be delimited with braces or followed by a semicolon --> rust/kernel/arch_static_branch_asm.rs:1:27 | 1 | ...ls!("1: jmp " ... ".popsection \n\t") | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ | help: change the delimiters to curly braces | 1 | ::kernel::concat_literals!{"1: jmp " ... ".popsection \n\t"} | ~ ~ help: add a semicolon | 1 | ::kernel::concat_literals!("1: jmp " ... ".popsection \n\t"); | +This file is not meant to be formatted nor works on its own since it ismeant to be textually included.Thus skip formatting it by prefixing its name with `generated_`.Cc: Masami Hiramatsu Cc: Alex Gaynor Cc: Mathieu Desnoyers Cc: Boqun Feng Cc: Gary Guo Cc: Björn Roy Baron Cc: Benno Lossin Cc: Andreas Hindborg Cc: Alice Ryhl Cc: Trevor Gross Link: https://lore.kernel.org/20241120175916.58860-1-ojeda@kernel.orgFixes: 169484ab6677 ("rust: add arch_static_branch")Signed-off-by: Miguel Ojeda Signed-off-by: Steven Rostedt (Google) List of files: /linux-6.15/rust/kernel/.gitignore

169484ab - rust: add arch_static_branch

Wed, 30 Oct 2024 16:04:28 +0000

rust: add arch_static_branchTo allow the Rust implementation of static_key_false to use runtime codepatching instead of the generic implementation, pull in the relevantinline assembly from the jump_label.h header by running the Cpreprocessor on a .rs.S file. Build rules are added for .rs.S files.Since the relevant inline asm has been adjusted to export the inline asmvia the ARCH_STATIC_BRANCH_ASM macro in a consistent way, the Rust sidedoes not need architecture specific code to pull in the asm.It is not possible to use the existing C implementation ofarch_static_branch via a Rust helper because it passes the argument`key` to inline assembly as an 'i' parameter. Any attempt to add a Chelper for this function will fail to compile because the value of `key`must be known at compile-time.Cc: Masami Hiramatsu Cc: Mathieu Desnoyers Cc: Josh Poimboeuf Cc: Jason Baron Cc: Ard Biesheuvel Cc: Alex Gaynor Cc: Wedson Almeida Filho Cc: Gary Guo Cc: " =?utf-8?q?Bj=C3=B6rn_Roy_Baron?= " Cc: Benno Lossin Cc: Andreas Hindborg Cc: Arnd Bergmann Cc: Thomas Gleixner Cc: Ingo Molnar Cc: Borislav Petkov Cc: Dave Hansen Cc: "H. Peter Anvin" Cc: Sean Christopherson Cc: Uros Bizjak Cc: Catalin Marinas Cc: Will Deacon Cc: Marc Zyngier Cc: Oliver Upton Cc: Mark Rutland Cc: Ryan Roberts Cc: Fuad Tabba Cc: Paul Walmsley Cc: Palmer Dabbelt Cc: Albert Ou Cc: Anup Patel Cc: Andrew Jones Cc: Alexandre Ghiti Cc: Conor Dooley Cc: Samuel Holland Cc: Huacai Chen Cc: WANG Xuerui Cc: Bibo Mao Cc: Tiezhu Yang Cc: Andrew Morton Cc: Tianrui Zhao Link: https://lore.kernel.org/20241030-tracepoint-v12-5-eec7f0f8ad22@google.comSuggested-by: Peter Zijlstra (Intel) Co-developed-by: Miguel Ojeda Signed-off-by: Miguel Ojeda Reviewed-by: Boqun Feng Signed-off-by: Alice Ryhl Signed-off-by: Steven Rostedt (Google) List of files: /linux-6.15/rust/kernel/.gitignore

Changes in .gitignore

8af7a501 - rust: jump_label: skip formatting generated file

169484ab - rust: add arch_static_branch