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Commit 803fc74f authored by Thomas Gleixner's avatar Thomas Gleixner
Browse files

cris: Use common threadinfo allocator 



There is no functional difference. __get_free_pages() ends up calling
alloc_pages_node().

This also allocates only one page which matches THREAD_SIZE instead of
an extra page for nothing.

Signed-off-by: default avatarThomas Gleixner <tglx@linutronix.de>
Cc: Jesper Nilsson <jesper.nilsson@axis.com>
Link: http://lkml.kernel.org/r/20120505150141.681236240@linutronix.de
parent 38e7c572

arch/cris/include/asm/processor.h

+2 −3
Original line number Diff line number Diff line
@@ -25,13 +25,12 @@ struct task_struct; 
 */

#define TASK_UNMAPPED_BASE      (PAGE_ALIGN(TASK_SIZE / 3))



/* THREAD_SIZE is the size of the task_struct/kernel_stack combo.

/* THREAD_SIZE is the size of the thread_info/kernel_stack combo.

 * normally, the stack is found by doing something like p + THREAD_SIZE

 * in CRIS, a page is 8192 bytes, which seems like a sane size

 */



#define THREAD_SIZE       PAGE_SIZE

#define KERNEL_STACK_SIZE PAGE_SIZE

#define THREAD_SIZE_ORDER (0)



/*

 * At user->kernel entry, the pt_regs struct is stacked on the top of the kernel-stack.

arch/cris/include/asm/thread_info.h

+0 −6
Original line number Diff line number Diff line
@@ -65,12 +65,6 @@ struct thread_info { 


#define init_thread_info	(init_thread_union.thread_info)



#define __HAVE_ARCH_THREAD_INFO_ALLOCATOR

/* thread information allocation */

#define alloc_thread_info_node(tsk, node)	\

	((struct thread_info *) __get_free_pages(GFP_KERNEL, 1))

#define free_thread_info(ti) free_pages((unsigned long) (ti), 1)



#endif /* !__ASSEMBLY__ */



/*