linux/arch/x86/vdso
Marcelo Tosatti e04c5d76b0 remove sched notifier for cross-cpu migrations
Linux as a guest on KVM hypervisor, the only user of the pvclock
vsyscall interface, does not require notification on task migration
because:

1. cpu ID number maps 1:1 to per-CPU pvclock time info.
2. per-CPU pvclock time info is updated if the
   underlying CPU changes.
3. that version is increased whenever underlying CPU
   changes.

Which is sufficient to guarantee nanoseconds counter
is calculated properly.

Signed-off-by: Marcelo Tosatti <mtosatti@redhat.com>
Acked-by: Peter Zijlstra <peterz@infradead.org>
Signed-off-by: Gleb Natapov <gleb@redhat.com>
2013-07-18 12:29:30 +02:00
..
vdso32
.gitignore
checkundef.sh
Makefile
vclock_gettime.c remove sched notifier for cross-cpu migrations 2013-07-18 12:29:30 +02:00
vdso32-setup.c x86/vdso: Convert use of typedef ctl_table to struct ctl_table 2013-06-19 15:06:09 +02:00
vdso32.S
vdso-layout.lds.S
vdso-note.S
vdso.lds.S
vdso.S
vdsox32.lds.S
vdsox32.S
vgetcpu.c
vma.c mm: use vm_unmapped_area() on x86_64 architecture 2012-12-11 17:22:25 -08:00