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>
13 lines
384 B
C
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__ */
|