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Commit 29af0eba authored by Sam Ravnborg's avatar Sam Ravnborg Committed by David S. Miller
Browse files

sparc32: use the common implementation of alloc_thread_info_node() 



With sun4c removed we can fall-back to the common implementation.

Signed-off-by: default avatarSam Ravnborg <sam@ravnborg.org>
Cc: Thomas Gleixner <tglx@linutronix.de>
Acked-by: default avatarThomas Gleixner <tglx@linutronix.de>
Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
parent 72c04af9

arch/sparc/Kconfig

+0 −1
Original line number Diff line number Diff line
@@ -37,7 +37,6 @@ config SPARC32 
	def_bool !64BIT

	select GENERIC_ATOMIC64

	select CLZ_TAB

	select ARCH_THREAD_INFO_ALLOCATOR



config SPARC64

	def_bool 64BIT

arch/sparc/include/asm/thread_info_32.h

+2 −9
Original line number Diff line number Diff line
@@ -77,18 +77,11 @@ register struct thread_info *current_thread_info_reg asm("g6"); 
/*

 * thread information allocation

 */

#define THREAD_INFO_ORDER  1



struct thread_info * alloc_thread_info_node(struct task_struct *tsk, int node);

void free_thread_info(struct thread_info *);

#define THREAD_SIZE_ORDER  1



#endif /* __ASSEMBLY__ */



/*

 * Size of kernel stack for each process.

 * Observe the order of get_free_pages() in alloc_thread_info_node().

 * The sun4 has 8K stack too, because it's short on memory, and 16K is a waste.

 */

/* Size of kernel stack for each process */

#define THREAD_SIZE		(2 * PAGE_SIZE)



/*

arch/sparc/mm/srmmu.c

+0 −27
Original line number Diff line number Diff line
@@ -467,33 +467,6 @@ void srmmu_unmapiorange(unsigned long virt_addr, unsigned int len) 
	flush_tlb_all();

}



/*

 * On the SRMMU we do not have the problems with limited tlb entries

 * for mapping kernel pages, so we just take things from the free page

 * pool.  As a side effect we are putting a little too much pressure

 * on the gfp() subsystem.  This setup also makes the logic of the

 * iommu mapping code a lot easier as we can transparently handle

 * mappings on the kernel stack without any special code.

 */

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

{

	struct thread_info *ret;



	ret = (struct thread_info *)__get_free_pages(GFP_KERNEL,

						     THREAD_INFO_ORDER);

#ifdef CONFIG_DEBUG_STACK_USAGE

	if (ret)

		memset(ret, 0, PAGE_SIZE << THREAD_INFO_ORDER);

#endif /* DEBUG_STACK_USAGE */



	return ret;

}



void free_thread_info(struct thread_info *ti)

{

	free_pages((unsigned long)ti, THREAD_INFO_ORDER);

}



/* tsunami.S */

extern void tsunami_flush_cache_all(void);

extern void tsunami_flush_cache_mm(struct mm_struct *mm);