Blackfin arch: disable pthread stack check for SMP at runtime

[linux-2.6-omap-h63xx.git] / arch / blackfin / include / asm / processor.h

diff --git a/arch/blackfin/include/asm/processor.h b/arch/blackfin/include/asm/processor.h
index 83d57a85b14f22dde88f5ba625d40df06d65205e..0eece23b41c7c1ddaeb2f04908c20b5c9f16cd0f 100644 (file)
--- a/arch/blackfin/include/asm/processor.h
+++ b/arch/blackfin/include/asm/processor.h
@@ -65,6 +65,7 @@ struct thread_struct {
  * pass the data segment into user programs if it exists,
  * it can't hurt anything as far as I can tell
  */
+#ifndef CONFIG_SMP
 #define start_thread(_regs, _pc, _usp)                                 \
 do {                                                                   \
        set_fs(USER_DS);                                                \
@@ -78,6 +79,16 @@ do {                                                                 \
                sizeof(*L1_SCRATCH_TASK_INFO));                         \
        wrusp(_usp);                                                    \
 } while(0)
+#else
+#define start_thread(_regs, _pc, _usp)                                 \
+do {                                                                   \
+       set_fs(USER_DS);                                                \
+       (_regs)->pc = (_pc);                                            \
+       if (current->mm)                                                \
+               (_regs)->p5 = current->mm->start_data;                  \
+       wrusp(_usp);                                                    \
+} while (0)
+#endif
 
 /* Forward declaration, a strange C thing */
 struct task_struct;