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| author | Vineet Gupta <vgupta@synopsys.com> | 2013-05-14 18:30:50 +0530 |
|---|---|---|
| committer | Vineet Gupta <vgupta@synopsys.com> | 2013-06-22 19:23:24 +0530 |
| commit | 147aece29b15051173eb1e767018135361cdba89 (patch) | |
| tree | 7a2b856e5b2214cc32bcbb0ac1606633db872aae /arch/arc/kernel | |
| parent | 1898a959b7512fcf6fa9f436ac8c403fab7255c3 (diff) | |
| download | linux-stable-147aece29b15051173eb1e767018135361cdba89.tar.gz linux-stable-147aece29b15051173eb1e767018135361cdba89.tar.bz2 linux-stable-147aece29b15051173eb1e767018135361cdba89.zip | |
ARC: Entry Handler tweaks: Simplify branch for in-kernel preemption
Signed-off-by: Vineet Gupta <vgupta@synopsys.com>
Diffstat (limited to 'arch/arc/kernel')
| -rw-r--r-- | arch/arc/kernel/entry.S | 8 |
1 files changed, 2 insertions, 6 deletions
diff --git a/arch/arc/kernel/entry.S b/arch/arc/kernel/entry.S index b4a96144430d..919e2f065d2f 100644 --- a/arch/arc/kernel/entry.S +++ b/arch/arc/kernel/entry.S @@ -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] |