linux-kernel - [PATCH 1/2] AutoFDO: Remove the architecture specific config

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Message-ID: <20241211222945.1325793-1-xur@google.com>
Date: Wed, 11 Dec 2024 14:29:42 -0800
From: Rong Xu <xur@...gle.com>
To: Masahiro Yamada <masahiroy@...nel.org>, Yabin Cui <yabinc@...gle.com>, 
	Will Deacon <will@...nel.org>, Han Shen <shenhan@...gle.com>, 
	Thomas Gleixner <tglx@...utronix.de>, Ingo Molnar <mingo@...hat.com>, Borislav Petkov <bp@...en8.de>, 
	Dave Hansen <dave.hansen@...ux.intel.com>, "H. Peter Anvin" <hpa@...or.com>, Kees Cook <kees@...nel.org>, 
	Andrew Morton <akpm@...ux-foundation.org>, Sami Tolvanen <samitolvanen@...gle.com>, 
	Alice Ryhl <aliceryhl@...gle.com>, "Mike Rapoport (Microsoft)" <rppt@...nel.org>, 
	Samuel Holland <samuel.holland@...ive.com>, "Paul E. McKenney" <paulmck@...nel.org>, Rong Xu <xur@...gle.com>, 
	Arnd Bergmann <arnd@...db.de>
Cc: x86@...nel.org, linux-kernel@...r.kernel.org
Subject: [PATCH 1/2] AutoFDO: Remove the architecture specific config

The CONFIG_AUTOFDO_CLANG option currently depends on
ARCH_SUPPORTS_AUTOFDO_CLANG, but this dependency seems unnecessary.

Remove ARCH_SUPPORTS_AUTOFDO_CLANG and allow users to control AutoFDO
builds solely through CONFIG_AUTOFDO_CLANG. This simplifies the kconfig
and avoids potential confusion.

Signed-off-by: Rong Xu <xur@...gle.com>
Suggested-by: Will Deacon <will@...nel.org>
---
 arch/Kconfig     | 4 ----
 arch/x86/Kconfig | 1 -
 2 files changed, 5 deletions(-)

diff --git a/arch/Kconfig b/arch/Kconfig
index 6682b2a53e342..0b36d74d47031 100644
--- a/arch/Kconfig
+++ b/arch/Kconfig
@@ -812,12 +812,8 @@ config LTO_CLANG_THIN
 	  If unsure, say Y.
 endchoice
 
-config ARCH_SUPPORTS_AUTOFDO_CLANG
-	bool
-
 config AUTOFDO_CLANG
 	bool "Enable Clang's AutoFDO build (EXPERIMENTAL)"
-	depends on ARCH_SUPPORTS_AUTOFDO_CLANG
 	depends on CC_IS_CLANG && CLANG_VERSION >= 170000
 	help
 	  This option enables Clang’s AutoFDO build. When
diff --git a/arch/x86/Kconfig b/arch/x86/Kconfig
index 9d7bd0ae48c42..9363d9cc9a00a 100644
--- a/arch/x86/Kconfig
+++ b/arch/x86/Kconfig
@@ -128,7 +128,6 @@ config X86
 	select ARCH_SUPPORTS_LTO_CLANG
 	select ARCH_SUPPORTS_LTO_CLANG_THIN
 	select ARCH_SUPPORTS_RT
-	select ARCH_SUPPORTS_AUTOFDO_CLANG
 	select ARCH_SUPPORTS_PROPELLER_CLANG    if X86_64
 	select ARCH_USE_BUILTIN_BSWAP
 	select ARCH_USE_CMPXCHG_LOCKREF		if X86_CMPXCHG64

base-commit: f92f4749861b06fed908d336b4dee1326003291b
-- 
2.47.0.338.g60cca15819-goog