[PATCH] hrtimers: remove data field

The nanosleep cleanup allows to remove the data field of hrtimer.  The
callback function can use container_of() to get it's own data.  Since the
hrtimer structure is anyway embedded in other structures, this adds no
overhead.

Signed-off-by: Roman Zippel <zippel@linux-m68k.org>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>

1 files changed, 7 insertions, 8 deletions

diff --git a/kernel/itimer.c b/kernel/itimer.c
index af2ec6b4392c..204ed7939e75 100644
--- a/kernel/itimer.c
+++ b/kernel/itimer.c
@@ -128,17 +128,16 @@ asmlinkage long sys_getitimer(int which, struct itimerval __user *value)
 /*
  * The timer is automagically restarted, when interval != 0
  */
-int it_real_fn(void *data)
+int it_real_fn(struct hrtimer *timer)
 {
-        struct task_struct *tsk = (struct task_struct *) data;
+        struct signal_struct *sig =
+            container_of(timer, struct signal_struct, real_timer);
 
-        send_group_sig_info(SIGALRM, SEND_SIG_PRIV, tsk);
-
-        if (tsk->signal->it_real_incr.tv64 != 0) {
-                hrtimer_forward(&tsk->signal->real_timer,
-                                tsk->signal->real_timer.base->softirq_time,
-                                tsk->signal->it_real_incr);
+        send_group_sig_info(SIGALRM, SEND_SIG_PRIV, sig->tsk);
 
+        if (sig->it_real_incr.tv64 != 0) {
+                hrtimer_forward(timer, timer->base->softirq_time,
+                                sig->it_real_incr);
                 return HRTIMER_RESTART;
         }
         return HRTIMER_NORESTART;