posix-timers: thread posix-cpu-timers on -rt

posix-cpu-timer code takes non -rt safe locks in hard irq
context. Move it to a thread.

Signed-off-by: John Stultz <johnstul@us.ibm.com>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>

2 files changed, 3 insertions, 0 deletions

diff --git a/include/linux/init_task.h b/include/linux/init_task.h
index 91665bd3d5e1..0d2e6070a7d9 100644
--- a/include/linux/init_task.h
+++ b/include/linux/init_task.h
@@ -161,6 +161,7 @@ extern struct cred init_cred;
         .fs_excl        = ATOMIC_INIT(0),                               \
         .pi_lock        = __ATOMIC_SPIN_LOCK_UNLOCKED(tsk.pi_lock),     \
         .timer_slack_ns = 50000, /* 50 usec default slack */            \
+        .posix_timer_list = NULL,                                       \
         .pids = {                                                       \
                 [PIDTYPE_PID]  = INIT_PID_LINK(PIDTYPE_PID),            \
                 [PIDTYPE_PGID] = INIT_PID_LINK(PIDTYPE_PGID),           \
diff --git a/include/linux/sched.h b/include/linux/sched.h
index 84dd8f4ee2dc..69faf651b10a 100644
--- a/include/linux/sched.h
+++ b/include/linux/sched.h
@@ -1292,6 +1292,8 @@ struct task_struct {
         struct task_cputime cputime_expires;
         struct list_head cpu_timers[3];
 
+        struct task_struct* posix_timer_list;
+
 /* process credentials */
         const struct cred *real_cred;   /* objective and real subjective task
                                          * credentials (COW) */