From: Miguel Ojeda <ojeda@kernel.org>
To: Miguel Ojeda <ojeda@kernel.org>,
Nathan Chancellor <nathan@kernel.org>,
Nicolas Schier <nsc@kernel.org>
Cc: "Boqun Feng" <boqun@kernel.org>, "Gary Guo" <gary@garyguo.net>,
"Björn Roy Baron" <bjorn3_gh@protonmail.com>,
"Benno Lossin" <lossin@kernel.org>,
"Andreas Hindborg" <a.hindborg@kernel.org>,
"Alice Ryhl" <aliceryhl@google.com>,
"Trevor Gross" <tmgross@umich.edu>,
"Danilo Krummrich" <dakr@kernel.org>,
rust-for-linux@vger.kernel.org, linux-kbuild@vger.kernel.org
Subject: [PATCH] kbuild: rust: rename flag to `-Zdebuginfo-for-profiling` for Rust >= 1.98
Date: Tue, 2 Jun 2026 17:16:38 +0200 [thread overview]
Message-ID: <20260602151638.14358-1-ojeda@kernel.org> (raw)
Starting with Rust 1.98.0 (expected 2026-08-20), the
`-Zdebug-info-for-profiling` flag has been renamed to
`-Zdebuginfo-for-profiling` (i.e. one less dash, to match `debuginfo`s
in other flags) [1].
Without this change, one gets in the latest nightlies:
error: unknown unstable option: `debug-info-for-profiling`
Thus pass the right name.
Link: https://github.com/rust-lang/rust/pull/156887 [1]
Signed-off-by: Miguel Ojeda <ojeda@kernel.org>
---
scripts/Makefile.autofdo | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/scripts/Makefile.autofdo b/scripts/Makefile.autofdo
index 3f08acab4549..1442043da139 100644
--- a/scripts/Makefile.autofdo
+++ b/scripts/Makefile.autofdo
@@ -3,7 +3,7 @@
# Enable available and selected Clang AutoFDO features.
CFLAGS_AUTOFDO_CLANG := -fdebug-info-for-profiling -mllvm -enable-fs-discriminator=true -mllvm -improved-fs-discriminator=true
-RUSTFLAGS_AUTOFDO_CLANG := -Zdebug-info-for-profiling -Cllvm-args=-enable-fs-discriminator=true -Cllvm-args=-improved-fs-discriminator=true
+RUSTFLAGS_AUTOFDO_CLANG := $(if $(call rustc-min-version,109800),-Zdebuginfo-for-profiling,-Zdebug-info-for-profiling) -Cllvm-args=-enable-fs-discriminator=true -Cllvm-args=-improved-fs-discriminator=true
ifndef CONFIG_DEBUG_INFO
CFLAGS_AUTOFDO_CLANG += -gmlt
base-commit: 025fd4b4fd382112bd4489e5b4437a295934fc19
--
2.54.0
next reply other threads:[~2026-06-02 15:17 UTC|newest]
Thread overview: 3+ messages / expand[flat|nested] mbox.gz Atom feed top
2026-06-02 15:16 Miguel Ojeda [this message]
2026-06-03 1:55 ` [PATCH] kbuild: rust: rename flag to `-Zdebuginfo-for-profiling` for Rust >= 1.98 Nathan Chancellor
2026-06-03 7:25 ` Alice Ryhl
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