mirror of
https://github.com/edk2-porting/linux-next.git
synced 2024-12-23 12:43:55 +08:00
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>
19 lines
425 B
C
19 lines
425 B
C
/*
|
|
* Define generic no-op hooks for arch_dup_mmap and arch_exit_mmap, to
|
|
* be included in asm-FOO/mmu_context.h for any arch FOO which doesn't
|
|
* need to hook these.
|
|
*/
|
|
#ifndef _ASM_GENERIC_MM_HOOKS_H
|
|
#define _ASM_GENERIC_MM_HOOKS_H
|
|
|
|
static inline void arch_dup_mmap(struct mm_struct *oldmm,
|
|
struct mm_struct *mm)
|
|
{
|
|
}
|
|
|
|
static inline void arch_exit_mmap(struct mm_struct *mm)
|
|
{
|
|
}
|
|
|
|
#endif /* _ASM_GENERIC_MM_HOOKS_H */
|