openkylin
/
linux
mirror of https://gitee.com/openkylin/linux.git
9
0
Fork 0
Code Issues Projects Releases Wiki Activity

arm64: Remove unused daif related functions/macros 

There are some helpers to modify PSR.[DAIF] bits that are not referenced
anywhere. The less these bits are available outside of local_irq_*
functions the better.

Get rid of those unused helpers.

Signed-off-by: Julien Thierry <julien.thierry@arm.com>
Reviewed-by: Mark Rutland <mark.rutland@arm.com>
Acked-by: Catalin Marinas <catalin.marinas@arm.com>
Acked-by: Marc Zyngier <marc.zyngier@arm.com>
Cc: Will Deacon <will.deacon@arm.com>
Cc: James Morse <james.morse@arm.com>
Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>
This commit is contained in:
Julien Thierry 2019-01-31 14:58:40 +00:00 committed by Catalin Marinas
parent 5870970b9a
commit a82785a953
2 changed files with 1 additions and 19 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

10
arch/arm64/include/asm/assembler.h
View File

@ -62,16 +62,8 @@
.endm .endm
/* /*
* Enable and disable interrupts. * Save/restore interrupts.
*/ */
.macro disable_irq
msr daifset, #2
.endm
.macro enable_irq
msr daifclr, #2
.endm
.macro save_and_disable_irq, flags .macro save_and_disable_irq, flags
mrs \flags, daif mrs \flags, daif
msr daifset, #2 msr daifset, #2

10
arch/arm64/include/asm/daifflags.h
View File

@ -43,16 +43,6 @@ static inline unsigned long local_daif_save(void)
return flags; return flags;
} }
static inline void local_daif_unmask(void)
{
trace_hardirqs_on();
asm volatile(
"msr daifclr, #0xf // local_daif_unmask"
:
:
: "memory");
}
static inline void local_daif_restore(unsigned long flags) static inline void local_daif_restore(unsigned long flags)
{ {
if (!arch_irqs_disabled_flags(flags)) if (!arch_irqs_disabled_flags(flags))