[Intel-gfx] [PATCH 1/5] drm/i915/pmu: Make more struct i915_pmu centric
Tvrtko Ursulin
tvrtko.ursulin at linux.intel.com
Thu Aug 1 14:17:28 UTC 2019
From: Tvrtko Ursulin <tvrtko.ursulin at intel.com>
Just tidy the code a bit by removing a sea of overly verbose i915->pmu.*.
Signed-off-by: Tvrtko Ursulin <tvrtko.ursulin at intel.com>
Reviewed-by: Chris Wilson <chris at chris-wilson.co.uk>
---
drivers/gpu/drm/i915/i915_pmu.c | 194 +++++++++++++++++---------------
1 file changed, 104 insertions(+), 90 deletions(-)
diff --git a/drivers/gpu/drm/i915/i915_pmu.c b/drivers/gpu/drm/i915/i915_pmu.c
index eff86483bec0..12008966b00e 100644
--- a/drivers/gpu/drm/i915/i915_pmu.c
+++ b/drivers/gpu/drm/i915/i915_pmu.c
@@ -74,8 +74,9 @@ static unsigned int event_enabled_bit(struct perf_event *event)
return config_enabled_bit(event->attr.config);
}
-static bool pmu_needs_timer(struct drm_i915_private *i915, bool gpu_active)
+static bool pmu_needs_timer(struct i915_pmu *pmu, bool gpu_active)
{
+ struct drm_i915_private *i915 = container_of(pmu, typeof(*i915), pmu);
u64 enable;
/*
@@ -83,7 +84,7 @@ static bool pmu_needs_timer(struct drm_i915_private *i915, bool gpu_active)
*
* We start with a bitmask of all currently enabled events.
*/
- enable = i915->pmu.enable;
+ enable = pmu->enable;
/*
* Mask out all the ones which do not need the timer, or in
@@ -114,24 +115,26 @@ static bool pmu_needs_timer(struct drm_i915_private *i915, bool gpu_active)
void i915_pmu_gt_parked(struct drm_i915_private *i915)
{
- if (!i915->pmu.base.event_init)
+ struct i915_pmu *pmu = &i915->pmu;
+
+ if (!pmu->base.event_init)
return;
- spin_lock_irq(&i915->pmu.lock);
+ spin_lock_irq(&pmu->lock);
/*
* Signal sampling timer to stop if only engine events are enabled and
* GPU went idle.
*/
- i915->pmu.timer_enabled = pmu_needs_timer(i915, false);
- spin_unlock_irq(&i915->pmu.lock);
+ pmu->timer_enabled = pmu_needs_timer(pmu, false);
+ spin_unlock_irq(&pmu->lock);
}
-static void __i915_pmu_maybe_start_timer(struct drm_i915_private *i915)
+static void __i915_pmu_maybe_start_timer(struct i915_pmu *pmu)
{
- if (!i915->pmu.timer_enabled && pmu_needs_timer(i915, true)) {
- i915->pmu.timer_enabled = true;
- i915->pmu.timer_last = ktime_get();
- hrtimer_start_range_ns(&i915->pmu.timer,
+ if (!pmu->timer_enabled && pmu_needs_timer(pmu, true)) {
+ pmu->timer_enabled = true;
+ pmu->timer_last = ktime_get();
+ hrtimer_start_range_ns(&pmu->timer,
ns_to_ktime(PERIOD), 0,
HRTIMER_MODE_REL_PINNED);
}
@@ -139,15 +142,17 @@ static void __i915_pmu_maybe_start_timer(struct drm_i915_private *i915)
void i915_pmu_gt_unparked(struct drm_i915_private *i915)
{
- if (!i915->pmu.base.event_init)
+ struct i915_pmu *pmu = &i915->pmu;
+
+ if (!pmu->base.event_init)
return;
- spin_lock_irq(&i915->pmu.lock);
+ spin_lock_irq(&pmu->lock);
/*
* Re-enable sampling timer when GPU goes active.
*/
- __i915_pmu_maybe_start_timer(i915);
- spin_unlock_irq(&i915->pmu.lock);
+ __i915_pmu_maybe_start_timer(pmu);
+ spin_unlock_irq(&pmu->lock);
}
static void
@@ -251,15 +256,16 @@ static enum hrtimer_restart i915_sample(struct hrtimer *hrtimer)
{
struct drm_i915_private *i915 =
container_of(hrtimer, struct drm_i915_private, pmu.timer);
+ struct i915_pmu *pmu = &i915->pmu;
unsigned int period_ns;
ktime_t now;
- if (!READ_ONCE(i915->pmu.timer_enabled))
+ if (!READ_ONCE(pmu->timer_enabled))
return HRTIMER_NORESTART;
now = ktime_get();
- period_ns = ktime_to_ns(ktime_sub(now, i915->pmu.timer_last));
- i915->pmu.timer_last = now;
+ period_ns = ktime_to_ns(ktime_sub(now, pmu->timer_last));
+ pmu->timer_last = now;
/*
* Strictly speaking the passed in period may not be 100% accurate for
@@ -443,6 +449,7 @@ static u64 get_rc6(struct drm_i915_private *i915)
{
#if IS_ENABLED(CONFIG_PM)
struct intel_runtime_pm *rpm = &i915->runtime_pm;
+ struct i915_pmu *pmu = &i915->pmu;
intel_wakeref_t wakeref;
unsigned long flags;
u64 val;
@@ -458,16 +465,16 @@ static u64 get_rc6(struct drm_i915_private *i915)
* previously.
*/
- spin_lock_irqsave(&i915->pmu.lock, flags);
+ spin_lock_irqsave(&pmu->lock, flags);
- if (val >= i915->pmu.sample[__I915_SAMPLE_RC6_ESTIMATED].cur) {
- i915->pmu.sample[__I915_SAMPLE_RC6_ESTIMATED].cur = 0;
- i915->pmu.sample[__I915_SAMPLE_RC6].cur = val;
+ if (val >= pmu->sample[__I915_SAMPLE_RC6_ESTIMATED].cur) {
+ pmu->sample[__I915_SAMPLE_RC6_ESTIMATED].cur = 0;
+ pmu->sample[__I915_SAMPLE_RC6].cur = val;
} else {
- val = i915->pmu.sample[__I915_SAMPLE_RC6_ESTIMATED].cur;
+ val = pmu->sample[__I915_SAMPLE_RC6_ESTIMATED].cur;
}
- spin_unlock_irqrestore(&i915->pmu.lock, flags);
+ spin_unlock_irqrestore(&pmu->lock, flags);
} else {
struct device *kdev = rpm->kdev;
@@ -478,7 +485,7 @@ static u64 get_rc6(struct drm_i915_private *i915)
* on top of the last known real value, as the approximated RC6
* counter value.
*/
- spin_lock_irqsave(&i915->pmu.lock, flags);
+ spin_lock_irqsave(&pmu->lock, flags);
/*
* After the above branch intel_runtime_pm_get_if_in_use failed
@@ -494,20 +501,20 @@ static u64 get_rc6(struct drm_i915_private *i915)
if (pm_runtime_status_suspended(kdev)) {
val = pm_runtime_suspended_time(kdev);
- if (!i915->pmu.sample[__I915_SAMPLE_RC6_ESTIMATED].cur)
- i915->pmu.suspended_time_last = val;
+ if (!pmu->sample[__I915_SAMPLE_RC6_ESTIMATED].cur)
+ pmu->suspended_time_last = val;
- val -= i915->pmu.suspended_time_last;
- val += i915->pmu.sample[__I915_SAMPLE_RC6].cur;
+ val -= pmu->suspended_time_last;
+ val += pmu->sample[__I915_SAMPLE_RC6].cur;
- i915->pmu.sample[__I915_SAMPLE_RC6_ESTIMATED].cur = val;
- } else if (i915->pmu.sample[__I915_SAMPLE_RC6_ESTIMATED].cur) {
- val = i915->pmu.sample[__I915_SAMPLE_RC6_ESTIMATED].cur;
+ pmu->sample[__I915_SAMPLE_RC6_ESTIMATED].cur = val;
+ } else if (pmu->sample[__I915_SAMPLE_RC6_ESTIMATED].cur) {
+ val = pmu->sample[__I915_SAMPLE_RC6_ESTIMATED].cur;
} else {
- val = i915->pmu.sample[__I915_SAMPLE_RC6].cur;
+ val = pmu->sample[__I915_SAMPLE_RC6].cur;
}
- spin_unlock_irqrestore(&i915->pmu.lock, flags);
+ spin_unlock_irqrestore(&pmu->lock, flags);
}
return val;
@@ -520,6 +527,7 @@ static u64 __i915_pmu_event_read(struct perf_event *event)
{
struct drm_i915_private *i915 =
container_of(event->pmu, typeof(*i915), pmu.base);
+ struct i915_pmu *pmu = &i915->pmu;
u64 val = 0;
if (is_engine_event(event)) {
@@ -542,12 +550,12 @@ static u64 __i915_pmu_event_read(struct perf_event *event)
switch (event->attr.config) {
case I915_PMU_ACTUAL_FREQUENCY:
val =
- div_u64(i915->pmu.sample[__I915_SAMPLE_FREQ_ACT].cur,
+ div_u64(pmu->sample[__I915_SAMPLE_FREQ_ACT].cur,
USEC_PER_SEC /* to MHz */);
break;
case I915_PMU_REQUESTED_FREQUENCY:
val =
- div_u64(i915->pmu.sample[__I915_SAMPLE_FREQ_REQ].cur,
+ div_u64(pmu->sample[__I915_SAMPLE_FREQ_REQ].cur,
USEC_PER_SEC /* to MHz */);
break;
case I915_PMU_INTERRUPTS:
@@ -582,24 +590,25 @@ static void i915_pmu_enable(struct perf_event *event)
struct drm_i915_private *i915 =
container_of(event->pmu, typeof(*i915), pmu.base);
unsigned int bit = event_enabled_bit(event);
+ struct i915_pmu *pmu = &i915->pmu;
unsigned long flags;
- spin_lock_irqsave(&i915->pmu.lock, flags);
+ spin_lock_irqsave(&pmu->lock, flags);
/*
* Update the bitmask of enabled events and increment
* the event reference counter.
*/
- BUILD_BUG_ON(ARRAY_SIZE(i915->pmu.enable_count) != I915_PMU_MASK_BITS);
- GEM_BUG_ON(bit >= ARRAY_SIZE(i915->pmu.enable_count));
- GEM_BUG_ON(i915->pmu.enable_count[bit] == ~0);
- i915->pmu.enable |= BIT_ULL(bit);
- i915->pmu.enable_count[bit]++;
+ BUILD_BUG_ON(ARRAY_SIZE(pmu->enable_count) != I915_PMU_MASK_BITS);
+ GEM_BUG_ON(bit >= ARRAY_SIZE(pmu->enable_count));
+ GEM_BUG_ON(pmu->enable_count[bit] == ~0);
+ pmu->enable |= BIT_ULL(bit);
+ pmu->enable_count[bit]++;
/*
* Start the sampling timer if needed and not already enabled.
*/
- __i915_pmu_maybe_start_timer(i915);
+ __i915_pmu_maybe_start_timer(pmu);
/*
* For per-engine events the bitmask and reference counting
@@ -625,7 +634,7 @@ static void i915_pmu_enable(struct perf_event *event)
engine->pmu.enable_count[sample]++;
}
- spin_unlock_irqrestore(&i915->pmu.lock, flags);
+ spin_unlock_irqrestore(&pmu->lock, flags);
/*
* Store the current counter value so we can report the correct delta
@@ -640,9 +649,10 @@ static void i915_pmu_disable(struct perf_event *event)
struct drm_i915_private *i915 =
container_of(event->pmu, typeof(*i915), pmu.base);
unsigned int bit = event_enabled_bit(event);
+ struct i915_pmu *pmu = &i915->pmu;
unsigned long flags;
- spin_lock_irqsave(&i915->pmu.lock, flags);
+ spin_lock_irqsave(&pmu->lock, flags);
if (is_engine_event(event)) {
u8 sample = engine_event_sample(event);
@@ -664,18 +674,18 @@ static void i915_pmu_disable(struct perf_event *event)
engine->pmu.enable &= ~BIT(sample);
}
- GEM_BUG_ON(bit >= ARRAY_SIZE(i915->pmu.enable_count));
- GEM_BUG_ON(i915->pmu.enable_count[bit] == 0);
+ GEM_BUG_ON(bit >= ARRAY_SIZE(pmu->enable_count));
+ GEM_BUG_ON(pmu->enable_count[bit] == 0);
/*
* Decrement the reference count and clear the enabled
* bitmask when the last listener on an event goes away.
*/
- if (--i915->pmu.enable_count[bit] == 0) {
- i915->pmu.enable &= ~BIT_ULL(bit);
- i915->pmu.timer_enabled &= pmu_needs_timer(i915, true);
+ if (--pmu->enable_count[bit] == 0) {
+ pmu->enable &= ~BIT_ULL(bit);
+ pmu->timer_enabled &= pmu_needs_timer(pmu, true);
}
- spin_unlock_irqrestore(&i915->pmu.lock, flags);
+ spin_unlock_irqrestore(&pmu->lock, flags);
}
static void i915_pmu_event_start(struct perf_event *event, int flags)
@@ -824,8 +834,9 @@ add_pmu_attr(struct perf_pmu_events_attr *attr, const char *name,
}
static struct attribute **
-create_event_attributes(struct drm_i915_private *i915)
+create_event_attributes(struct i915_pmu *pmu)
{
+ struct drm_i915_private *i915 = container_of(pmu, typeof(*i915), pmu);
static const struct {
u64 config;
const char *name;
@@ -939,8 +950,8 @@ create_event_attributes(struct drm_i915_private *i915)
}
}
- i915->pmu.i915_attr = i915_attr;
- i915->pmu.pmu_attr = pmu_attr;
+ pmu->i915_attr = i915_attr;
+ pmu->pmu_attr = pmu_attr;
return attr;
@@ -956,7 +967,7 @@ err:;
return NULL;
}
-static void free_event_attributes(struct drm_i915_private *i915)
+static void free_event_attributes(struct i915_pmu *pmu)
{
struct attribute **attr_iter = i915_pmu_events_attr_group.attrs;
@@ -964,12 +975,12 @@ static void free_event_attributes(struct drm_i915_private *i915)
kfree((*attr_iter)->name);
kfree(i915_pmu_events_attr_group.attrs);
- kfree(i915->pmu.i915_attr);
- kfree(i915->pmu.pmu_attr);
+ kfree(pmu->i915_attr);
+ kfree(pmu->pmu_attr);
i915_pmu_events_attr_group.attrs = NULL;
- i915->pmu.i915_attr = NULL;
- i915->pmu.pmu_attr = NULL;
+ pmu->i915_attr = NULL;
+ pmu->pmu_attr = NULL;
}
static int i915_pmu_cpu_online(unsigned int cpu, struct hlist_node *node)
@@ -1006,7 +1017,7 @@ static int i915_pmu_cpu_offline(unsigned int cpu, struct hlist_node *node)
static enum cpuhp_state cpuhp_slot = CPUHP_INVALID;
-static int i915_pmu_register_cpuhp_state(struct drm_i915_private *i915)
+static int i915_pmu_register_cpuhp_state(struct i915_pmu *pmu)
{
enum cpuhp_state slot;
int ret;
@@ -1019,7 +1030,7 @@ static int i915_pmu_register_cpuhp_state(struct drm_i915_private *i915)
return ret;
slot = ret;
- ret = cpuhp_state_add_instance(slot, &i915->pmu.node);
+ ret = cpuhp_state_add_instance(slot, &pmu->node);
if (ret) {
cpuhp_remove_multi_state(slot);
return ret;
@@ -1029,15 +1040,16 @@ static int i915_pmu_register_cpuhp_state(struct drm_i915_private *i915)
return 0;
}
-static void i915_pmu_unregister_cpuhp_state(struct drm_i915_private *i915)
+static void i915_pmu_unregister_cpuhp_state(struct i915_pmu *pmu)
{
WARN_ON(cpuhp_slot == CPUHP_INVALID);
- WARN_ON(cpuhp_state_remove_instance(cpuhp_slot, &i915->pmu.node));
+ WARN_ON(cpuhp_state_remove_instance(cpuhp_slot, &pmu->node));
cpuhp_remove_multi_state(cpuhp_slot);
}
void i915_pmu_register(struct drm_i915_private *i915)
{
+ struct i915_pmu *pmu = &i915->pmu;
int ret;
if (INTEL_GEN(i915) <= 2) {
@@ -1045,56 +1057,58 @@ void i915_pmu_register(struct drm_i915_private *i915)
return;
}
- i915_pmu_events_attr_group.attrs = create_event_attributes(i915);
+ i915_pmu_events_attr_group.attrs = create_event_attributes(pmu);
if (!i915_pmu_events_attr_group.attrs) {
ret = -ENOMEM;
goto err;
}
- i915->pmu.base.attr_groups = i915_pmu_attr_groups;
- i915->pmu.base.task_ctx_nr = perf_invalid_context;
- i915->pmu.base.event_init = i915_pmu_event_init;
- i915->pmu.base.add = i915_pmu_event_add;
- i915->pmu.base.del = i915_pmu_event_del;
- i915->pmu.base.start = i915_pmu_event_start;
- i915->pmu.base.stop = i915_pmu_event_stop;
- i915->pmu.base.read = i915_pmu_event_read;
- i915->pmu.base.event_idx = i915_pmu_event_event_idx;
-
- spin_lock_init(&i915->pmu.lock);
- hrtimer_init(&i915->pmu.timer, CLOCK_MONOTONIC, HRTIMER_MODE_REL);
- i915->pmu.timer.function = i915_sample;
-
- ret = perf_pmu_register(&i915->pmu.base, "i915", -1);
+ pmu->base.attr_groups = i915_pmu_attr_groups;
+ pmu->base.task_ctx_nr = perf_invalid_context;
+ pmu->base.event_init = i915_pmu_event_init;
+ pmu->base.add = i915_pmu_event_add;
+ pmu->base.del = i915_pmu_event_del;
+ pmu->base.start = i915_pmu_event_start;
+ pmu->base.stop = i915_pmu_event_stop;
+ pmu->base.read = i915_pmu_event_read;
+ pmu->base.event_idx = i915_pmu_event_event_idx;
+
+ spin_lock_init(&pmu->lock);
+ hrtimer_init(&pmu->timer, CLOCK_MONOTONIC, HRTIMER_MODE_REL);
+ pmu->timer.function = i915_sample;
+
+ ret = perf_pmu_register(&pmu->base, "i915", -1);
if (ret)
goto err;
- ret = i915_pmu_register_cpuhp_state(i915);
+ ret = i915_pmu_register_cpuhp_state(pmu);
if (ret)
goto err_unreg;
return;
err_unreg:
- perf_pmu_unregister(&i915->pmu.base);
+ perf_pmu_unregister(&pmu->base);
err:
- i915->pmu.base.event_init = NULL;
- free_event_attributes(i915);
+ pmu->base.event_init = NULL;
+ free_event_attributes(pmu);
DRM_NOTE("Failed to register PMU! (err=%d)\n", ret);
}
void i915_pmu_unregister(struct drm_i915_private *i915)
{
- if (!i915->pmu.base.event_init)
+ struct i915_pmu *pmu = &i915->pmu;
+
+ if (!pmu->base.event_init)
return;
- WARN_ON(i915->pmu.enable);
+ WARN_ON(pmu->enable);
- hrtimer_cancel(&i915->pmu.timer);
+ hrtimer_cancel(&pmu->timer);
- i915_pmu_unregister_cpuhp_state(i915);
+ i915_pmu_unregister_cpuhp_state(pmu);
- perf_pmu_unregister(&i915->pmu.base);
- i915->pmu.base.event_init = NULL;
- free_event_attributes(i915);
+ perf_pmu_unregister(&pmu->base);
+ pmu->base.event_init = NULL;
+ free_event_attributes(pmu);
}
--
2.20.1
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