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| author | Rob Herring | 2014-05-14 01:34:35 +0200 |
|---|---|---|
| committer | Rob Herring | 2014-05-14 01:34:35 +0200 |
| commit | eafd370dfe487facfdef499057f4eac9aa0b4bf5 (patch) | |
| tree | 0925a67cd658cdf4811f49b4cd2073f663166bd0 /arch/arc/kernel | |
| parent | of: push struct boot_param_header and defines into powerpc (diff) | |
| parent | of/selftest: add testcase for nodes with same name and address (diff) | |
| download | kernel-qcow2-linux-eafd370dfe487facfdef499057f4eac9aa0b4bf5.tar.gz kernel-qcow2-linux-eafd370dfe487facfdef499057f4eac9aa0b4bf5.tar.xz kernel-qcow2-linux-eafd370dfe487facfdef499057f4eac9aa0b4bf5.zip | |
Merge branch 'dt-bus-name' into for-next
Diffstat (limited to 'arch/arc/kernel')
| -rw-r--r-- | arch/arc/kernel/entry.S | 8 |
1 files changed, 5 insertions, 3 deletions
diff --git a/arch/arc/kernel/entry.S b/arch/arc/kernel/entry.S index 819dd5f7eb05..29b82adbf0b4 100644 --- a/arch/arc/kernel/entry.S +++ b/arch/arc/kernel/entry.S @@ -614,11 +614,13 @@ resume_user_mode_begin: resume_kernel_mode: -#ifdef CONFIG_PREEMPT - - ; This is a must for preempt_schedule_irq() + ; Disable Interrupts from this point on + ; CONFIG_PREEMPT: This is a must for preempt_schedule_irq() + ; !CONFIG_PREEMPT: To ensure restore_regs is intr safe IRQ_DISABLE r9 +#ifdef CONFIG_PREEMPT + ; Can't preempt if preemption disabled GET_CURR_THR_INFO_FROM_SP r10 ld r8, [r10, THREAD_INFO_PREEMPT_COUNT] |