Merge branch 'mpi-master' into wip-k-fmlpwip-k-fmlp

Conflicts:
	litmus/sched_cedf.c

1 files changed, 9 insertions, 23 deletions

diff --git a/arch/ia64/kernel/time.c b/arch/ia64/kernel/time.c
index ed6f22eb5b12..85118dfe9bb5 100644
--- a/arch/ia64/kernel/time.c
+++ b/arch/ia64/kernel/time.c
@@ -36,7 +36,7 @@
 static cycle_t itc_get_cycles(struct clocksource *cs);
 
 struct fsyscall_gtod_data_t fsyscall_gtod_data = {
-        .lock = SEQLOCK_UNLOCKED,
+        .lock = __SEQLOCK_UNLOCKED(fsyscall_gtod_data.lock),
 };
 
 struct itc_jitter_data_t itc_jitter_data;
@@ -73,8 +73,6 @@ static struct clocksource clocksource_itc = {
         .rating         = 350,
         .read           = itc_get_cycles,
         .mask           = CLOCKSOURCE_MASK(64),
-        .mult           = 0, /*to be calculated*/
-        .shift          = 16,
         .flags          = CLOCK_SOURCE_IS_CONTINUOUS,
 #ifdef CONFIG_PARAVIRT
         .resume         = paravirt_clocksource_resume,
@@ -168,7 +166,7 @@ timer_interrupt (int irq, void *dev_id)
 {
         unsigned long new_itm;
 
-        if (unlikely(cpu_is_offline(smp_processor_id()))) {
+        if (cpu_is_offline(smp_processor_id())) {
                 return IRQ_HANDLED;
         }
 
@@ -190,19 +188,10 @@ timer_interrupt (int irq, void *dev_id)
 
                 new_itm += local_cpu_data->itm_delta;
 
-                if (smp_processor_id() == time_keeper_id) {
-                        /*
-                         * Here we are in the timer irq handler. We have irqs locally
-                         * disabled, but we don't know if the timer_bh is running on
-                         * another CPU. We need to avoid to SMP race by acquiring the
-                         * xtime_lock.
-                         */
-                        write_seqlock(&xtime_lock);
-                        do_timer(1);
-                        local_cpu_data->itm_next = new_itm;
-                        write_sequnlock(&xtime_lock);
-                } else
-                        local_cpu_data->itm_next = new_itm;
+                if (smp_processor_id() == time_keeper_id)
+                        xtime_update(1);
+
+                local_cpu_data->itm_next = new_itm;
 
                 if (time_after(new_itm, ia64_get_itc()))
                         break;
@@ -222,7 +211,7 @@ skip_process_time_accounting:
                  * comfort, we increase the safety margin by
                  * intentionally dropping the next tick(s).  We do NOT
                  * update itm.next because that would force us to call
-                 * do_timer() which in turn would let our clock run
+                 * xtime_update() which in turn would let our clock run
                  * too fast (with the potentially devastating effect
                  * of losing monotony of time).
                  */
@@ -374,11 +363,8 @@ ia64_init_itm (void)
         ia64_cpu_local_tick();
 
         if (!itc_clocksource) {
-                /* Sort out mult/shift values: */
-                clocksource_itc.mult =
-                        clocksource_hz2mult(local_cpu_data->itc_freq,
-                                                clocksource_itc.shift);
-                clocksource_register(&clocksource_itc);
+                clocksource_register_hz(&clocksource_itc,
+                                                local_cpu_data->itc_freq);
                 itc_clocksource = &clocksource_itc;
         }
 }