linux/include/asm-v850/mmu_context.h
Jeremy Fitzhardinge d6dd61c831 [PATCH] x86: PARAVIRT: add hooks to intercept mm creation and destruction
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>
2007-05-02 19:27:14 +02:00

13 lines
384 B
C

#ifndef __V850_MMU_CONTEXT_H__
#define __V850_MMU_CONTEXT_H__
#include <asm-generic/mm_hooks.h>
#define destroy_context(mm) ((void)0)
#define init_new_context(tsk,mm) 0
#define switch_mm(prev,next,tsk) ((void)0)
#define deactivate_mm(tsk,mm) do { } while (0)
#define activate_mm(prev,next) ((void)0)
#define enter_lazy_tlb(mm,tsk) ((void)0)
#endif /* __V850_MMU_CONTEXT_H__ */