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tile: Use common threadinfo allocator 

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

Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Cc: Chris Metcalf <cmetcalf@tilera.com>
Link: http://lkml.kernel.org/r/20120505150142.311126440@linutronix.de
This commit is contained in:
Thomas Gleixner 2012-05-05 15:05:47 +00:00
parent 41101809a8
commit d909a81b19
2 changed files with 4 additions and 25 deletions
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6
arch/tile/include/asm/thread_info.h
View File

@ -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);

23
arch/tile/kernel/process.c
View File

@ -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);