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Commit d909a81b authored by Thomas Gleixner's avatar Thomas Gleixner
Browse files

tile: Use common threadinfo allocator 



Use the core allocator and deal with the extra cleanup in
arch_release_thread_info().

Signed-off-by: default avatarThomas Gleixner <tglx@linutronix.de>
Cc: Chris Metcalf <cmetcalf@tilera.com>
Link: http://lkml.kernel.org/r/20120505150142.311126440@linutronix.de
parent 41101809

arch/tile/include/asm/thread_info.h

+2 −4
Original line number Diff line number Diff line
@@ -77,16 +77,14 @@ struct thread_info { 


#ifndef __ASSEMBLY__



void arch_release_thread_info(struct thread_info *info);



/* How to get the thread information struct from C. */

register unsigned long stack_pointer __asm__("sp");



#define current_thread_info() \

  ((struct thread_info *)(stack_pointer & -THREAD_SIZE))



#define __HAVE_ARCH_THREAD_INFO_ALLOCATOR

extern struct thread_info *alloc_thread_info_node(struct task_struct *task, int node);

extern void free_thread_info(struct thread_info *info);



/* Sit on a nap instruction until interrupted. */

extern void smp_nap(void);

arch/tile/kernel/process.c

+2 −21
Original line number Diff line number Diff line
@@ -114,27 +114,10 @@ void cpu_idle(void) 
	}

}



struct thread_info *alloc_thread_info_node(struct task_struct *task, int node)

{

	struct page *page;

	gfp_t flags = GFP_KERNEL;



#ifdef CONFIG_DEBUG_STACK_USAGE

	flags |= __GFP_ZERO;

#endif



	page = alloc_pages_node(node, flags, THREAD_SIZE_ORDER);

	if (!page)

		return NULL;



	return (struct thread_info *)page_address(page);

}



/*

 * Free a thread_info node, and all of its derivative

 * data structures.

 * Release a thread_info structure

 */

void free_thread_info(struct thread_info *info)

void arch_release_thread_info(struct thread_info *info)

{

	struct single_step_state *step_state = info->step_state;
@@ -169,8 +152,6 @@ void free_thread_info(struct thread_info *info) 
		 */

		kfree(step_state);

	}



	free_pages((unsigned long)info, THREAD_SIZE_ORDER);

}



static void save_arch_state(struct thread_struct *t);