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| author |   Ingo Molnar <mingo@kernel.org> | 2017-02-05 14:31:22 +0100 |
|---|---|---|
| committer | Ingo Molnar <mingo@kernel.org> | 2017-03-03 01:45:24 +0100 |
| commit | 9049863a32fad5d7158318e45f0a41a0f2192c0c (patch) | |
| tree | 18acb5b1a7d253fc99b6a80196d95a6e0f7ce3cc /include/linux/sched/task_stack.h | |
| parent | sched/headers, vfs/execve: Move the do_execve*() prototypes from <linux/sched.h> to <linux/binfmts.h> (diff) | |
| download | linux-dev-9049863a32fad5d7158318e45f0a41a0f2192c0c.tar.xz linux-dev-9049863a32fad5d7158318e45f0a41a0f2192c0c.zip | |
sched/headers: Move kstack_end() from <linux/sched.h> to <linux/sched/task_stack.h>
This is a task-stack related API, not core scheduler functionality.
Acked-by: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Mike Galbraith <efault@gmx.de>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: linux-kernel@vger.kernel.org
Signed-off-by: Ingo Molnar <mingo@kernel.org>
Diffstat (limited to '')
| -rw-r--r-- | include/linux/sched/task_stack.h | 10 |
1 files changed, 10 insertions, 0 deletions
diff --git a/include/linux/sched/task_stack.h b/include/linux/sched/task_stack.h index aaa5c2a6a0e9..df6ea6665b31 100644 --- a/include/linux/sched/task_stack.h +++ b/include/linux/sched/task_stack.h @@ -108,4 +108,14 @@ static inline unsigned long stack_not_used(struct task_struct *p) #endif extern void set_task_stack_end_magic(struct task_struct *tsk); +#ifndef __HAVE_ARCH_KSTACK_END +static inline int kstack_end(void *addr) +{ + /* Reliable end of stack detection: + * Some APM bios versions misalign the stack + */ + return !(((unsigned long)addr+sizeof(void*)-1) & (THREAD_SIZE-sizeof(void*))); +} +#endif + #endif /* _LINUX_SCHED_TASK_STACK_H */ |