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sparc32: use the common implementation of alloc_thread_info_node()

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

Signed-off-by: Sam Ravnborg <sam@ravnborg.org>
Cc: Thomas Gleixner <tglx@linutronix.de>
Acked-by: Thomas Gleixner <tglx@linutronix.de>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Sam Ravnborg 2012-05-22 16:39:00 +02:00 committed by David S. Miller
parent 72c04af9a2
commit 29af0ebaa2
3 changed files with 2 additions and 37 deletions
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1
arch/sparc/Kconfig
View file

@ -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

11
arch/sparc/include/asm/thread_info_32.h
View file

@ -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)
/*

27
arch/sparc/mm/srmmu.c
View file

@ -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);