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d6dd61c831
Add hooks to allow a paravirt implementation to track the lifetime of an mm. Paravirtualization requires three hooks, but only two are needed in common code. They are: arch_dup_mmap, which is called when a new mmap is created at fork arch_exit_mmap, which is called when the last process reference to an mm is dropped, which typically happens on exit and exec. The third hook is activate_mm, which is called from the arch-specific activate_mm() macro/function, and so doesn't need stub versions for other architectures. It's called when an mm is first used. Signed-off-by: Jeremy Fitzhardinge <jeremy@xensource.com> Signed-off-by: Andi Kleen <ak@suse.de> Cc: linux-arch@vger.kernel.org Cc: James Bottomley <James.Bottomley@SteelEye.com> Acked-by: Ingo Molnar <mingo@elte.hu>
14 lines
384 B
C
14 lines
384 B
C
#ifndef __V850_MMU_CONTEXT_H__
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#define __V850_MMU_CONTEXT_H__
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#include <asm-generic/mm_hooks.h>
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#define destroy_context(mm) ((void)0)
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#define init_new_context(tsk,mm) 0
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#define switch_mm(prev,next,tsk) ((void)0)
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#define deactivate_mm(tsk,mm) do { } while (0)
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#define activate_mm(prev,next) ((void)0)
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#define enter_lazy_tlb(mm,tsk) ((void)0)
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#endif /* __V850_MMU_CONTEXT_H__ */
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