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Date: Tue, 25 Jan 2022 10:14:53 +0100 From: Ard Biesheuvel <ardb@...nel.org> To: linux@...linux.org.uk, linux-arm-kernel@...ts.infradead.org Cc: linux-hardening@...r.kernel.org, Ard Biesheuvel <ardb@...nel.org>, Arnd Bergmann <arnd@...db.de>, Kees Cook <keescook@...omium.org>, Keith Packard <keithpac@...zon.com>, Linus Walleij <linus.walleij@...aro.org>, Nick Desaulniers <ndesaulniers@...gle.com>, Marc Zyngier <maz@...nel.org> Subject: [PATCH v6 8/8] ARM: make get_current() and __my_cpu_offset() __always_inline The get_current() and __my_cpu_offset() accessors evaluate to only a single instruction emitted inline, but due to the size of the asm string that is created for SMP+v6 configurations, the compiler assumes otherwise, and may emit the functions out of line instead. So use __always_inline to avoid this. Signed-off-by: Ard Biesheuvel <ardb@...nel.org> --- arch/arm/include/asm/current.h | 2 +- arch/arm/include/asm/percpu.h | 2 +- 2 files changed, 2 insertions(+), 2 deletions(-) diff --git a/arch/arm/include/asm/current.h b/arch/arm/include/asm/current.h index 131a89bbec6b..1e1178bf176d 100644 --- a/arch/arm/include/asm/current.h +++ b/arch/arm/include/asm/current.h @@ -14,7 +14,7 @@ struct task_struct; extern struct task_struct *__current; -static inline __attribute_const__ struct task_struct *get_current(void) +static __always_inline __attribute_const__ struct task_struct *get_current(void) { struct task_struct *cur; diff --git a/arch/arm/include/asm/percpu.h b/arch/arm/include/asm/percpu.h index a09034ae45a1..7545c87c251f 100644 --- a/arch/arm/include/asm/percpu.h +++ b/arch/arm/include/asm/percpu.h @@ -25,7 +25,7 @@ static inline void set_my_cpu_offset(unsigned long off) asm volatile("mcr p15, 0, %0, c13, c0, 4" : : "r" (off) : "memory"); } -static inline unsigned long __my_cpu_offset(void) +static __always_inline unsigned long __my_cpu_offset(void) { unsigned long off; -- 2.30.2
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