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Message-Id: <fa2b9869fd17f210eaa156ec2b594efd0230b6c7.1432192527.git.viresh.kumar@linaro.org>
Date: Thu, 21 May 2015 13:33:46 +0530
From: Viresh Kumar <viresh.kumar@...aro.org>
To: Thomas Gleixner <tglx@...utronix.de>
Cc: linaro-kernel@...ts.linaro.org, linux-kernel@...r.kernel.org,
Peter Zijlstra <peterz@...radead.org>,
Ingo Molnar <mingo@...hat.com>,
Viresh Kumar <viresh.kumar@...aro.org>
Subject: [PATCH V2 2/2] clockevents: Use helpers to verify state of a clockevent device
Use accessor functions to verify state of clockevent devices in core
code.
Signed-off-by: Viresh Kumar <viresh.kumar@...aro.org>
---
kernel/time/clockevents.c | 24 ++++++++++++------------
kernel/time/tick-broadcast.c | 6 +++---
kernel/time/tick-common.c | 2 +-
kernel/time/tick-oneshot.c | 2 +-
4 files changed, 17 insertions(+), 17 deletions(-)
diff --git a/kernel/time/clockevents.c b/kernel/time/clockevents.c
index 4922f1b805ea..f533d3b13b92 100644
--- a/kernel/time/clockevents.c
+++ b/kernel/time/clockevents.c
@@ -136,7 +136,7 @@ static int __clockevents_set_state(struct clock_event_device *dev,
case CLOCK_EVT_STATE_ONESHOT_STOPPED:
/* Core internal bug */
- if (WARN_ONCE(dev->state != CLOCK_EVT_STATE_ONESHOT,
+ if (WARN_ONCE(!clockevent_state_oneshot(dev),
"Current state: %d\n", dev->state))
return -EINVAL;
@@ -170,7 +170,7 @@ void clockevents_set_state(struct clock_event_device *dev,
* A nsec2cyc multiplicator of 0 is invalid and we'd crash
* on it, so fix it up and emit a warning:
*/
- if (state == CLOCK_EVT_STATE_ONESHOT) {
+ if (clockevent_state_oneshot(dev)) {
if (unlikely(!dev->mult)) {
dev->mult = 1;
WARN_ON(1);
@@ -259,7 +259,7 @@ static int clockevents_program_min_delta(struct clock_event_device *dev)
delta = dev->min_delta_ns;
dev->next_event = ktime_add_ns(ktime_get(), delta);
- if (dev->state == CLOCK_EVT_STATE_SHUTDOWN)
+ if (clockevent_state_shutdown(dev))
return 0;
dev->retries++;
@@ -296,7 +296,7 @@ static int clockevents_program_min_delta(struct clock_event_device *dev)
delta = dev->min_delta_ns;
dev->next_event = ktime_add_ns(ktime_get(), delta);
- if (dev->state == CLOCK_EVT_STATE_SHUTDOWN)
+ if (clockevent_state_shutdown(dev))
return 0;
dev->retries++;
@@ -328,11 +328,11 @@ int clockevents_program_event(struct clock_event_device *dev, ktime_t expires,
dev->next_event = expires;
- if (dev->state == CLOCK_EVT_STATE_SHUTDOWN)
+ if (clockevent_state_shutdown(dev))
return 0;
/* We must be in ONESHOT state here */
- WARN_ONCE(dev->state != CLOCK_EVT_STATE_ONESHOT, "Current state: %d\n",
+ WARN_ONCE(!clockevent_state_oneshot(dev), "Current state: %d\n",
dev->state);
/* Shortcut for clockevent devices that can deal with ktime. */
@@ -377,7 +377,7 @@ static int clockevents_replace(struct clock_event_device *ced)
struct clock_event_device *dev, *newdev = NULL;
list_for_each_entry(dev, &clockevent_devices, list) {
- if (dev == ced || dev->state != CLOCK_EVT_STATE_DETACHED)
+ if (dev == ced || !clockevent_state_detached(dev))
continue;
if (!tick_check_replacement(newdev, dev))
@@ -403,7 +403,7 @@ static int clockevents_replace(struct clock_event_device *ced)
static int __clockevents_try_unbind(struct clock_event_device *ced, int cpu)
{
/* Fast track. Device is unused */
- if (ced->state == CLOCK_EVT_STATE_DETACHED) {
+ if (clockevent_state_detached(ced)) {
list_del_init(&ced->list);
return 0;
}
@@ -561,10 +561,10 @@ int __clockevents_update_freq(struct clock_event_device *dev, u32 freq)
{
clockevents_config(dev, freq);
- if (dev->state == CLOCK_EVT_STATE_ONESHOT)
+ if (clockevent_state_oneshot(dev))
return clockevents_program_event(dev, dev->next_event, false);
- if (dev->state == CLOCK_EVT_STATE_PERIODIC)
+ if (clockevent_state_periodic(dev))
return __clockevents_set_state(dev, CLOCK_EVT_STATE_PERIODIC);
return 0;
@@ -625,7 +625,7 @@ void clockevents_exchange_device(struct clock_event_device *old,
}
if (new) {
- BUG_ON(new->state != CLOCK_EVT_STATE_DETACHED);
+ BUG_ON(!clockevent_state_detached(new));
clockevents_shutdown(new);
}
}
@@ -681,7 +681,7 @@ void tick_cleanup_dead_cpu(int cpu)
if (cpumask_test_cpu(cpu, dev->cpumask) &&
cpumask_weight(dev->cpumask) == 1 &&
!tick_is_broadcast_device(dev)) {
- BUG_ON(dev->state != CLOCK_EVT_STATE_DETACHED);
+ BUG_ON(!clockevent_state_detached(dev));
list_del(&dev->list);
}
}
diff --git a/kernel/time/tick-broadcast.c b/kernel/time/tick-broadcast.c
index 12fcc55d607a..132f819fdcdf 100644
--- a/kernel/time/tick-broadcast.c
+++ b/kernel/time/tick-broadcast.c
@@ -303,7 +303,7 @@ static void tick_handle_periodic_broadcast(struct clock_event_device *dev)
raw_spin_lock(&tick_broadcast_lock);
bc_local = tick_do_periodic_broadcast();
- if (dev->state == CLOCK_EVT_STATE_ONESHOT) {
+ if (clockevent_state_oneshot(dev)) {
ktime_t next = ktime_add(dev->next_event, tick_period);
clockevents_program_event(dev, next, true);
@@ -528,7 +528,7 @@ static void tick_broadcast_set_affinity(struct clock_event_device *bc,
static void tick_broadcast_set_event(struct clock_event_device *bc, int cpu,
ktime_t expires)
{
- if (bc->state != CLOCK_EVT_STATE_ONESHOT)
+ if (!clockevent_state_oneshot(bc))
clockevents_set_state(bc, CLOCK_EVT_STATE_ONESHOT);
clockevents_program_event(bc, expires, 1);
@@ -831,7 +831,7 @@ void tick_broadcast_setup_oneshot(struct clock_event_device *bc)
/* Set it up only once ! */
if (bc->event_handler != tick_handle_oneshot_broadcast) {
- int was_periodic = bc->state == CLOCK_EVT_STATE_PERIODIC;
+ int was_periodic = clockevent_state_periodic(bc);
bc->event_handler = tick_handle_oneshot_broadcast;
diff --git a/kernel/time/tick-common.c b/kernel/time/tick-common.c
index ea5f9eae8f74..cf881c62c3c5 100644
--- a/kernel/time/tick-common.c
+++ b/kernel/time/tick-common.c
@@ -112,7 +112,7 @@ void tick_handle_periodic(struct clock_event_device *dev)
return;
#endif
- if (dev->state != CLOCK_EVT_STATE_ONESHOT)
+ if (!clockevent_state_oneshot(dev))
return;
for (;;) {
/*
diff --git a/kernel/time/tick-oneshot.c b/kernel/time/tick-oneshot.c
index f8de75715c2f..3f9715bec291 100644
--- a/kernel/time/tick-oneshot.c
+++ b/kernel/time/tick-oneshot.c
@@ -36,7 +36,7 @@ int tick_program_event(ktime_t expires, int force)
return 0;
}
- if (unlikely(dev->state == CLOCK_EVT_STATE_ONESHOT_STOPPED)) {
+ if (unlikely(clockevent_state_oneshot_stopped(dev))) {
/*
* We need the clock event again, configure it in ONESHOT mode
* before using it.
--
2.4.0
--
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