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ARM: make get_current() and __my_cpu_offset() __always_inline

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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@kernel.org>
Reviewed-by: Nick Desaulniers <ndesaulniers@google.com>
This commit is contained in:
Ard Biesheuvel 2022-01-24 23:32:51 +01:00
parent 57a420435e
commit 4d5a643e73
2 changed files with 2 additions and 2 deletions
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2
arch/arm/include/asm/current.h
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@ -14,7 +14,7 @@ struct task_struct;
extern struct task_struct *__current; 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; struct task_struct *cur;

2
arch/arm/include/asm/percpu.h
View File

@ -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"); 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; unsigned long off;