diff options
| author | Paul Mackerras <paulus@samba.org> | 2008-05-09 20:12:06 +1000 |
|---|---|---|
| committer | Paul Mackerras <paulus@samba.org> | 2008-05-09 20:12:06 +1000 |
| commit | 2a5f2e3e6cd1ce9fb3f8b186b6bc9aa1f1497a92 (patch) | |
| tree | b2306840f227972a7c9d4a2b75e516fe81358ce8 /arch/m68knommu/platform/coldfire/entry.S | |
| parent | 02539d71fa98d5737bb668b02286c76241e4bac9 (diff) | |
| parent | 78be76476a34a77f0ea9db2f78ba46a2b0fd5ab5 (diff) | |
Merge branch 'for-2.6.26' of master.kernel.org:/pub/scm/linux/kernel/git/jwboyer/powerpc-4xx into merge
Diffstat (limited to 'arch/m68knommu/platform/coldfire/entry.S')
| -rw-r--r-- | arch/m68knommu/platform/coldfire/entry.S | 18 |
1 files changed, 18 insertions, 0 deletions
diff --git a/arch/m68knommu/platform/coldfire/entry.S b/arch/m68knommu/platform/coldfire/entry.S index 111b66dc737b..1e3c0dcbd7ac 100644 --- a/arch/m68knommu/platform/coldfire/entry.S +++ b/arch/m68knommu/platform/coldfire/entry.S @@ -103,9 +103,26 @@ ret_from_signal: addql #4,%sp ret_from_exception: + move #0x2700,%sr /* disable intrs */ btst #5,%sp@(PT_SR) /* check if returning to kernel */ jeq Luser_return /* if so, skip resched, signals */ +#ifdef CONFIG_PREEMPT + movel %sp,%d1 /* get thread_info pointer */ + andl #-THREAD_SIZE,%d1 /* at base of kernel stack */ + movel %d1,%a0 + movel %a0@(TI_FLAGS),%d1 /* get thread_info->flags */ + andl #_TIF_NEED_RESCHED,%d1 + jeq Lkernel_return + + movel %a0@(TI_PREEMPTCOUNT),%d1 + cmpl #0,%d1 + jne Lkernel_return + + pea Lkernel_return + jmp preempt_schedule_irq /* preempt the kernel */ +#endif + Lkernel_return: moveml %sp@,%d1-%d5/%a0-%a2 lea %sp@(32),%sp /* space for 8 regs */ @@ -140,6 +157,7 @@ Lreturn: Lwork_to_do: movel %a0@(TI_FLAGS),%d1 /* get thread_info->flags */ + move #0x2000,%sr /* enable intrs again */ btst #TIF_NEED_RESCHED,%d1 jne reschedule |