Commit-ID: 5c333864a6ba811052d52ef14fbed056b9ac3512
Gitweb: http://git.kernel.org/tip/5c333864a6ba811052d52ef14fbed056b9ac3512
Author: Arun R Bharadwaj <arun@xxxxxxxxxxxxxxxxxx>
AuthorDate: Thu, 16 Apr 2009 12:14:37 +0530
Committer: Thomas Gleixner <tglx@xxxxxxxxxxxxx>
CommitDate: Wed, 13 May 2009 16:52:42 +0200
timers: Identifying the existing pinned timers
* Arun R Bharadwaj <arun@xxxxxxxxxxxxxxxxxx> [2009-04-16 12:11:36]:
The following pinned hrtimers have been identified and marked:
1)sched_rt_period_timer
2)tick_sched_timer
3)stack_trace_timer_fn
[ tglx: fixup the hrtimer pinned mode ]
Signed-off-by: Arun R Bharadwaj <arun@xxxxxxxxxxxxxxxxxx>
Signed-off-by: Thomas Gleixner <tglx@xxxxxxxxxxxxx>
---
arch/x86/kernel/apic/x2apic_uv_x.c | 2 +-
kernel/sched.c | 4 ++--
kernel/time/tick-sched.c | 7 ++++---
kernel/trace/trace_sysprof.c | 3 ++-
4 files changed, 9 insertions(+), 7 deletions(-)
diff --git a/arch/x86/kernel/apic/x2apic_uv_x.c b/arch/x86/kernel/apic/x2apic_uv_x.c
index 2bda693..a9cad1b 100644
--- a/arch/x86/kernel/apic/x2apic_uv_x.c
+++ b/arch/x86/kernel/apic/x2apic_uv_x.c
@@ -463,7 +463,7 @@ static void uv_heartbeat(unsigned long ignored)
uv_set_scir_bits(bits);
/* enable next timer period */
- mod_timer(timer, jiffies + SCIR_CPU_HB_INTERVAL);
+ mod_timer_pinned(timer, jiffies + SCIR_CPU_HB_INTERVAL);
}
static void __cpuinit uv_heartbeat_enable(int cpu)
diff --git a/kernel/sched.c b/kernel/sched.c
index b902e58..9c5b4d3 100644
--- a/kernel/sched.c
+++ b/kernel/sched.c
@@ -244,7 +244,7 @@ static void start_rt_bandwidth(struct rt_bandwidth *rt_b)
hard = hrtimer_get_expires(&rt_b->rt_period_timer);
delta = ktime_to_ns(ktime_sub(hard, soft));
__hrtimer_start_range_ns(&rt_b->rt_period_timer, soft, delta,
- HRTIMER_MODE_ABS, 0);
+ HRTIMER_MODE_ABS_PINNED, 0);
}
spin_unlock(&rt_b->rt_runtime_lock);
}
@@ -1154,7 +1154,7 @@ static __init void init_hrtick(void)
static void hrtick_start(struct rq *rq, u64 delay)
{
__hrtimer_start_range_ns(&rq->hrtick_timer, ns_to_ktime(delay), 0,
- HRTIMER_MODE_REL, 0);
+ HRTIMER_MODE_REL_PINNED, 0);
}
static inline void init_hrtick(void)
diff --git a/kernel/time/tick-sched.c b/kernel/time/tick-sched.c
index d3f1ef4..2aff39c 100644
--- a/kernel/time/tick-sched.c
+++ b/kernel/time/tick-sched.c
@@ -349,7 +349,7 @@ void tick_nohz_stop_sched_tick(int inidle)
if (ts->nohz_mode == NOHZ_MODE_HIGHRES) {
hrtimer_start(&ts->sched_timer, expires,
- HRTIMER_MODE_ABS);
+ HRTIMER_MODE_ABS_PINNED);
/* Check, if the timer was already in the past */
if (hrtimer_active(&ts->sched_timer))
goto out;
@@ -395,7 +395,7 @@ static void tick_nohz_restart(struct tick_sched *ts, ktime_t now)
if (ts->nohz_mode == NOHZ_MODE_HIGHRES) {
hrtimer_start_expires(&ts->sched_timer,
- HRTIMER_MODE_ABS);
+ HRTIMER_MODE_ABS_PINNED);
/* Check, if the timer was already in the past */
if (hrtimer_active(&ts->sched_timer))
break;
@@ -698,7 +698,8 @@ void tick_setup_sched_timer(void)
for (;;) {
hrtimer_forward(&ts->sched_timer, now, tick_period);
- hrtimer_start_expires(&ts->sched_timer, HRTIMER_MODE_ABS);
+ hrtimer_start_expires(&ts->sched_timer,
+ HRTIMER_MODE_ABS_PINNED);
/* Check, if the timer was already in the past */
if (hrtimer_active(&ts->sched_timer))
break;
diff --git a/kernel/trace/trace_sysprof.c b/kernel/trace/trace_sysprof.c
index 91fd19c..d180554 100644
--- a/kernel/trace/trace_sysprof.c
+++ b/kernel/trace/trace_sysprof.c
@@ -203,7 +203,8 @@ static void start_stack_timer(void *unused)
hrtimer_init(hrtimer, CLOCK_MONOTONIC, HRTIMER_MODE_REL);
hrtimer->function = stack_trace_timer_fn;
- hrtimer_start(hrtimer, ns_to_ktime(sample_period), HRTIMER_MODE_REL);
+ hrtimer_start(hrtimer, ns_to_ktime(sample_period),
+ HRTIMER_MODE_REL_PINNED);
}
static void start_stack_timers(void)
--
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