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Commit 147aece2 authored by Vineet Gupta's avatar Vineet Gupta
Browse files

ARC: Entry Handler tweaks: Simplify branch for in-kernel preemption 



Signed-off-by: default avatarVineet Gupta <vgupta@synopsys.com>
parent 1898a959

arch/arc/kernel/entry.S

+2 −6
Original line number Diff line number Diff line
@@ -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]