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nexedi
linux
Commits
147aece2
Commit
147aece2
authored
May 14, 2013
by
Vineet Gupta
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ARC: Entry Handler tweaks: Simplify branch for in-kernel preemption
Signed-off-by:
Vineet Gupta
<
vgupta@synopsys.com
>
parent
1898a959
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arch/arc/kernel/entry.S
arch/arc/kernel/entry.S
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arch/arc/kernel/entry.S
View file @
147aece2
...
...
@@ -586,11 +586,7 @@ ARC_ENTRY ret_from_exception
; Pre-{IRQ,Trap,Exception} K/U mode from pt_regs->status32
ld
r8
,
[
sp
,
PT_status32
]
; returning to User/Kernel Mode
#ifdef CONFIG_PREEMPT
bbit0
r8
,
STATUS_U_BIT
,
resume_kernel_mode
#else
bbit0
r8
,
STATUS_U_BIT
,
restore_regs
#endif
; Before returning to User mode check-for-and-complete any pending work
; such as rescheduling/signal-delivery etc.
...
...
@@ -650,10 +646,10 @@ resume_user_mode_begin:
b
resume_user_mode_begin
; unconditionally back to U mode ret chks
; for single exit point from this block
#ifdef CONFIG_PREEMPT
resume_kernel_mode
:
#ifdef CONFIG_PREEMPT
; Can't preempt if preemption disabled
GET_CURR_THR_INFO_FROM_SP
r10
ld
r8
,
[
r10
,
THREAD_INFO_PREEMPT_COUNT
]
...
...
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