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[PATCH] m68k: introduce task_thread_info

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new helper - task_thread_info(task).  On platforms that have thread_info
allocated separately (i.e.  in default case) it simply returns
task->thread_info.  m68k wants (and for good reasons) to embed its thread_info
into task_struct.  So it will (in later patch) have task_thread_info() of its
own.  For now we just add a macro for generic case and convert existing
instances of its body in core kernel to uses of new macro.  Obviously safe -
all normal architectures get the same preprocessor output they used to get.

Signed-off-by: Al Viro <[email protected]>
Signed-off-by: Roman Zippel <[email protected]>
Signed-off-by: Andrew Morton <[email protected]>
Signed-off-by: Linus Torvalds <[email protected]>
This commit is contained in:
Al Viro 2005-11-13 16:06:55 -08:00 • committed by Linus Torvalds
commit a1261f5461
4 changed files with 15 additions and 13 deletions
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16
include/linux/sched.h
View file

@ -1233,32 +1233,34 @@ static inline void task_unlock(struct task_struct *p)
spin_unlock(&p->alloc_lock);
}
#define task_thread_info(task) (task)->thread_info
/* set thread flags in other task's structures
* - see asm/thread_info.h for TIF_xxxx flags available
*/
static inline void set_tsk_thread_flag(struct task_struct *tsk, int flag)
{
set_ti_thread_flag(tsk->thread_info,flag);
set_ti_thread_flag(task_thread_info(tsk), flag);
}
static inline void clear_tsk_thread_flag(struct task_struct *tsk, int flag)
{
clear_ti_thread_flag(tsk->thread_info,flag);
clear_ti_thread_flag(task_thread_info(tsk), flag);
}
static inline int test_and_set_tsk_thread_flag(struct task_struct *tsk, int flag)
{
return test_and_set_ti_thread_flag(tsk->thread_info,flag);
return test_and_set_ti_thread_flag(task_thread_info(tsk), flag);
}
static inline int test_and_clear_tsk_thread_flag(struct task_struct *tsk, int flag)
{
return test_and_clear_ti_thread_flag(tsk->thread_info,flag);
return test_and_clear_ti_thread_flag(task_thread_info(tsk), flag);
}
static inline int test_tsk_thread_flag(struct task_struct *tsk, int flag)
{
return test_ti_thread_flag(tsk->thread_info,flag);
return test_ti_thread_flag(task_thread_info(tsk), flag);
}
static inline void set_tsk_need_resched(struct task_struct *tsk)
@ -1329,12 +1331,12 @@ extern void signal_wake_up(struct task_struct *t, int resume_stopped);
static inline unsigned int task_cpu(const struct task_struct *p)
{
return p->thread_info->cpu;
return task_thread_info(p)->cpu;
}
static inline void set_task_cpu(struct task_struct *p, unsigned int cpu)
{
p->thread_info->cpu = cpu;
task_thread_info(p)->cpu = cpu;
}
#else