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| author | Jiri Kosina <jkosina@suse.cz> | 2008-05-06 18:57:55 +0400 |
|---|---|---|
| committer | Jiri Kosina <jkosina@suse.cz> | 2008-05-06 18:57:55 +0400 |
| commit | 7022b15e2a9f878fd5184586064c63352c3dd225 (patch) | |
| tree | 5365c2f5bc82ae1946636ee8d5cd5d3b7e804f1b /arch/m68knommu/platform/coldfire/entry.S | |
| parent | aaad2b0c757f3e6e02552cb0bdcd91a5ec0d6305 (diff) | |
| parent | a15306365a16380f3bafee9e181ba01231d4acd7 (diff) | |
| download | linux-7022b15e2a9f878fd5184586064c63352c3dd225.tar.xz | |
Merge branch 'master' of git://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux-2.6
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 |