61c4628b53
Split the FPU save area from the task struct. This allows easy migration of FPU context, and it's generally cleaner. It also allows the following two optimizations: 1) only allocate when the application actually uses FPU, so in the first lazy FPU trap. This could save memory for non-fpu using apps. Next patch does this lazy allocation. 2) allocate the right size for the actual cpu rather than 512 bytes always. Patches enabling xsave/xrstor support (coming shortly) will take advantage of this. Signed-off-by: Suresh Siddha <suresh.b.siddha@intel.com> Signed-off-by: Arjan van de Ven <arjan@linux.intel.com> Signed-off-by: Ingo Molnar <mingo@elte.hu> Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
14 lines
365 B
C
14 lines
365 B
C
#ifndef _ASM_X86_THREAD_INFO_H
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#ifdef CONFIG_X86_32
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# include "thread_info_32.h"
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#else
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# include "thread_info_64.h"
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#endif
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#ifndef __ASSEMBLY__
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extern void arch_task_cache_init(void);
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extern void free_thread_info(struct thread_info *ti);
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extern int arch_dup_task_struct(struct task_struct *dst, struct task_struct *src);
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#endif
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#endif /* _ASM_X86_THREAD_INFO_H */
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