diff options
| author | Marcelo Tosatti <mtosatti@redhat.com> | 2015-03-24 02:21:51 +0300 |
|---|---|---|
| committer | Marcelo Tosatti <mtosatti@redhat.com> | 2015-03-24 02:22:48 +0300 |
| commit | 0a4e6be9ca17c54817cf814b4b5aa60478c6df27 (patch) | |
| tree | 461ed6cace26da5c75d1c01982fde2f3ccc5d4fa /include/linux/sched.h | |
| parent | 58d2930f4ee335ab703d768cb0318331fc1bb62c (diff) | |
| download | linux-0a4e6be9ca17c54817cf814b4b5aa60478c6df27.tar.xz | |
x86: kvm: Revert "remove sched notifier for cross-cpu migrations"
The following point:
2. per-CPU pvclock time info is updated if the
underlying CPU changes.
Is not true anymore since "KVM: x86: update pvclock area conditionally,
on cpu migration".
Add task migration notification back.
Problem noticed by Andy Lutomirski.
Signed-off-by: Marcelo Tosatti <mtosatti@redhat.com>
CC: stable@kernel.org # 3.11+
Diffstat (limited to 'include/linux/sched.h')
| -rw-r--r-- | include/linux/sched.h | 8 |
1 files changed, 8 insertions, 0 deletions
diff --git a/include/linux/sched.h b/include/linux/sched.h index 6d77432e14ff..be98910cc1e2 100644 --- a/include/linux/sched.h +++ b/include/linux/sched.h @@ -176,6 +176,14 @@ extern void get_iowait_load(unsigned long *nr_waiters, unsigned long *load); extern void calc_global_load(unsigned long ticks); extern void update_cpu_load_nohz(void); +/* Notifier for when a task gets migrated to a new CPU */ +struct task_migration_notifier { + struct task_struct *task; + int from_cpu; + int to_cpu; +}; +extern void register_task_migration_notifier(struct notifier_block *n); + extern unsigned long get_parent_ip(unsigned long addr); extern void dump_cpu_task(int cpu); |