Pull the boolean intel_rps.enabled and intel_rps.active into a single
flags field, in preparation for more.
Signed-off-by: Chris Wilson <chris@xxxxxxxxxxxxxxxxxx>
---
drivers/gpu/drm/i915/gt/debugfs_gt_pm.c | 5 +--
drivers/gpu/drm/i915/gt/intel_rps.c | 43 ++++++++++++++---------
drivers/gpu/drm/i915/gt/intel_rps.h | 30 ++++++++++++++++
drivers/gpu/drm/i915/gt/intel_rps_types.h | 8 +++--
drivers/gpu/drm/i915/gt/selftest_rps.c | 20 +++++------
drivers/gpu/drm/i915/i915_debugfs.c | 5 +--
6 files changed, 78 insertions(+), 33 deletions(-)
diff --git a/drivers/gpu/drm/i915/gt/debugfs_gt_pm.c b/drivers/gpu/drm/i915/gt/debugfs_gt_pm.c
index 3d3ef62ed89f..3fd33cd1a400 100644
--- a/drivers/gpu/drm/i915/gt/debugfs_gt_pm.c
+++ b/drivers/gpu/drm/i915/gt/debugfs_gt_pm.c
@@ -556,7 +556,8 @@ static int rps_boost_show(struct seq_file *m, void *data)
struct drm_i915_private *i915 = gt->i915;
struct intel_rps *rps = >->rps;
- seq_printf(m, "RPS enabled? %d\n", rps->enabled);
+ seq_printf(m, "RPS enabled? %s\n", yesno(intel_rps_is_enabled(rps)));
+ seq_printf(m, "RPS active? %s\n", yesno(intel_rps_is_active(rps)));
seq_printf(m, "GPU busy? %s\n", yesno(gt->awake));
seq_printf(m, "Boosts outstanding? %d\n",
atomic_read(&rps->num_waiters));
@@ -576,7 +577,7 @@ static int rps_boost_show(struct seq_file *m, void *data)
seq_printf(m, "Wait boosts: %d\n", atomic_read(&rps->boosts));
- if (INTEL_GEN(i915) >= 6 && rps->enabled && gt->awake) {
+ if (INTEL_GEN(i915) >= 6 && intel_rps_is_active(rps)) {
struct intel_uncore *uncore = gt->uncore;
u32 rpup, rpupei;
u32 rpdown, rpdownei;
diff --git a/drivers/gpu/drm/i915/gt/intel_rps.c b/drivers/gpu/drm/i915/gt/intel_rps.c
index 2ce006e58b4a..a27e989a08eb 100644
--- a/drivers/gpu/drm/i915/gt/intel_rps.c
+++ b/drivers/gpu/drm/i915/gt/intel_rps.c
@@ -648,7 +648,7 @@ void intel_rps_mark_interactive(struct intel_rps *rps, bool interactive)
mutex_lock(&rps->power.mutex);
if (interactive) {
- if (!rps->power.interactive++ && READ_ONCE(rps->active))
+ if (!rps->power.interactive++ && intel_rps_is_active(rps))
rps_set_power(rps, HIGH_POWER);
} else {
GEM_BUG_ON(!rps->power.interactive);
@@ -721,7 +721,7 @@ static int rps_set(struct intel_rps *rps, u8 val, bool update)
void intel_rps_unpark(struct intel_rps *rps)
{
- if (!rps->enabled)
+ if (!intel_rps_is_enabled(rps))
return;
GT_TRACE(rps_to_gt(rps), "unpark:%x\n", rps->cur_freq);
@@ -732,8 +732,7 @@ void intel_rps_unpark(struct intel_rps *rps)
*/
mutex_lock(&rps->lock);
- WRITE_ONCE(rps->active, true);
-
+ intel_rps_set_active(rps);
intel_rps_set(rps,
clamp(rps->cur_freq,
rps->min_freq_softlimit,
@@ -754,13 +753,12 @@ void intel_rps_park(struct intel_rps *rps)
{
struct drm_i915_private *i915 = rps_to_i915(rps);
- if (!rps->enabled)
+ if (!intel_rps_clear_active(rps))
return;
if (INTEL_GEN(i915) >= 6)
rps_disable_interrupts(rps);
- WRITE_ONCE(rps->active, false);
if (rps->last_freq <= rps->idle_freq)
return;
@@ -802,7 +800,7 @@ void intel_rps_boost(struct i915_request *rq)
struct intel_rps *rps = &READ_ONCE(rq->engine)->gt->rps;
unsigned long flags;
- if (i915_request_signaled(rq) || !READ_ONCE(rps->active))
+ if (i915_request_signaled(rq) || !intel_rps_is_active(rps))
return;
/* Serializes with i915_request_retire() */
@@ -831,7 +829,7 @@ int intel_rps_set(struct intel_rps *rps, u8 val)
GEM_BUG_ON(val > rps->max_freq);
GEM_BUG_ON(val < rps->min_freq);
- if (rps->active) {
+ if (intel_rps_is_active(rps)) {
err = rps_set(rps, val, true);
if (err)
return err;
@@ -1219,6 +1217,7 @@ void intel_rps_enable(struct intel_rps *rps)
{
struct drm_i915_private *i915 = rps_to_i915(rps);
struct intel_uncore *uncore = rps_to_uncore(rps);
+ bool enabled = false;
if (!HAS_RPS(i915))
return;
@@ -1226,20 +1225,24 @@ void intel_rps_enable(struct intel_rps *rps)
intel_gt_check_clock_frequency(rps_to_gt(rps));
intel_uncore_forcewake_get(uncore, FORCEWAKE_ALL);
- if (IS_CHERRYVIEW(i915))
- rps->enabled = chv_rps_enable(rps);
+ if (rps->max_freq <= rps->min_freq)
+ /* leave disabled, no room for dynamic reclocking */;
+ else if (IS_CHERRYVIEW(i915))
+ enabled = chv_rps_enable(rps);
else if (IS_VALLEYVIEW(i915))
- rps->enabled = vlv_rps_enable(rps);
+ enabled = vlv_rps_enable(rps);
else if (INTEL_GEN(i915) >= 9)
- rps->enabled = gen9_rps_enable(rps);
+ enabled = gen9_rps_enable(rps);
else if (INTEL_GEN(i915) >= 8)
- rps->enabled = gen8_rps_enable(rps);
+ enabled = gen8_rps_enable(rps);
else if (INTEL_GEN(i915) >= 6)
- rps->enabled = gen6_rps_enable(rps);
+ enabled = gen6_rps_enable(rps);
else if (IS_IRONLAKE_M(i915))
- rps->enabled = gen5_rps_enable(rps);
+ enabled = gen5_rps_enable(rps);
+ else
+ MISSING_CASE(INTEL_GEN(i915));
intel_uncore_forcewake_put(uncore, FORCEWAKE_ALL);
- if (!rps->enabled)
+ if (!enabled)
return;
GT_TRACE(rps_to_gt(rps),
@@ -1253,6 +1256,8 @@ void intel_rps_enable(struct intel_rps *rps)
GEM_BUG_ON(rps->efficient_freq < rps->min_freq);
GEM_BUG_ON(rps->efficient_freq > rps->max_freq);
+
+ intel_rps_set_enabled(rps);
}
static void gen6_rps_disable(struct intel_rps *rps)
@@ -1264,7 +1269,7 @@ void intel_rps_disable(struct intel_rps *rps)
{
struct drm_i915_private *i915 = rps_to_i915(rps);
- rps->enabled = false;
+ intel_rps_clear_enabled(rps);
if (INTEL_GEN(i915) >= 6)
gen6_rps_disable(rps);
@@ -1511,6 +1516,10 @@ static void rps_work(struct work_struct *work)
goto out;
mutex_lock(&rps->lock);
+ if (!intel_rps_is_active(rps)) {
+ mutex_unlock(&rps->lock);
+ return;
+ }
pm_iir |= vlv_wa_c0_ei(rps, pm_iir);
diff --git a/drivers/gpu/drm/i915/gt/intel_rps.h b/drivers/gpu/drm/i915/gt/intel_rps.h
index dfa98194f3b2..a01decf70f31 100644
--- a/drivers/gpu/drm/i915/gt/intel_rps.h
+++ b/drivers/gpu/drm/i915/gt/intel_rps.h
@@ -36,4 +36,34 @@ void gen5_rps_irq_handler(struct intel_rps *rps);
void gen6_rps_irq_handler(struct intel_rps *rps, u32 pm_iir);
void gen11_rps_irq_handler(struct intel_rps *rps, u32 pm_iir);
+static inline bool intel_rps_is_enabled(const struct intel_rps *rps)
+{
+ return test_bit(INTEL_RPS_ENABLED, &rps->flags);
+}
+
+static inline void intel_rps_set_enabled(struct intel_rps *rps)
+{
+ set_bit(INTEL_RPS_ENABLED, &rps->flags);
+}
+
+static inline void intel_rps_clear_enabled(struct intel_rps *rps)
+{
+ clear_bit(INTEL_RPS_ENABLED, &rps->flags);
+}
+
+static inline bool intel_rps_is_active(const struct intel_rps *rps)
+{
+ return test_bit(INTEL_RPS_ACTIVE, &rps->flags);
+}
+
+static inline void intel_rps_set_active(struct intel_rps *rps)
+{
+ set_bit(INTEL_RPS_ACTIVE, &rps->flags);
+}
+
+static inline bool intel_rps_clear_active(struct intel_rps *rps)
+{
+ return test_and_clear_bit(INTEL_RPS_ACTIVE, &rps->flags);
+}
+
#endif /* INTEL_RPS_H */
diff --git a/drivers/gpu/drm/i915/gt/intel_rps_types.h b/drivers/gpu/drm/i915/gt/intel_rps_types.h
index c2e279154bd5..1ec44f994bc5 100644
--- a/drivers/gpu/drm/i915/gt/intel_rps_types.h
+++ b/drivers/gpu/drm/i915/gt/intel_rps_types.h
@@ -31,6 +31,11 @@ struct intel_rps_ei {
u32 media_c0;
};
+enum {
+ INTEL_RPS_ENABLED = 0,
+ INTEL_RPS_ACTIVE,
+};
+
struct intel_rps {
struct mutex lock; /* protects enabling and the worker */
@@ -39,8 +44,7 @@ struct intel_rps {
* dev_priv->irq_lock
*/
struct work_struct work;
- bool enabled;
- bool active;
+ unsigned long flags;
u32 pm_iir;
/* PM interrupt bits that should never be masked */
diff --git a/drivers/gpu/drm/i915/gt/selftest_rps.c b/drivers/gpu/drm/i915/gt/selftest_rps.c
index e13cbcb82825..f47b59d5943c 100644
--- a/drivers/gpu/drm/i915/gt/selftest_rps.c
+++ b/drivers/gpu/drm/i915/gt/selftest_rps.c
@@ -183,7 +183,7 @@ static u8 wait_for_freq(struct intel_rps *rps, u8 freq, int timeout_ms)
static u8 rps_set_check(struct intel_rps *rps, u8 freq)
{
mutex_lock(&rps->lock);
- GEM_BUG_ON(!rps->active);
+ GEM_BUG_ON(!intel_rps_is_active(rps));
intel_rps_set(rps, freq);
GEM_BUG_ON(rps->last_freq != freq);
mutex_unlock(&rps->lock);
@@ -225,7 +225,7 @@ int live_rps_control(void *arg)
* will be lowered than requested.
*/
- if (!rps->enabled || rps->max_freq <= rps->min_freq)
+ if (!intel_rps_is_enabled(rps))
return 0;
if (IS_CHERRYVIEW(gt->i915)) /* XXX fragile PCU */
@@ -456,7 +456,7 @@ int live_rps_frequency_cs(void *arg)
* frequency, the actual frequency, and the observed clock rate.
*/
- if (!rps->enabled || rps->max_freq <= rps->min_freq)
+ if (!intel_rps_is_enabled(rps))
return 0;
if (INTEL_GEN(gt->i915) < 8) /* for CS simplicity */
@@ -598,7 +598,7 @@ int live_rps_frequency_srm(void *arg)
* frequency, the actual frequency, and the observed clock rate.
*/
- if (!rps->enabled || rps->max_freq <= rps->min_freq)
+ if (!intel_rps_is_enabled(rps))
return 0;
if (INTEL_GEN(gt->i915) < 8) /* for CS simplicity */
@@ -765,7 +765,7 @@ static int __rps_up_interrupt(struct intel_rps *rps,
return -EIO;
}
- if (!rps->active) {
+ if (!intel_rps_is_active(rps)) {
pr_err("%s: RPS not enabled on starting spinner\n",
engine->name);
igt_spinner_end(spin);
@@ -878,7 +878,7 @@ int live_rps_interrupt(void *arg)
* First, let's check whether or not we are receiving interrupts.
*/
- if (!rps->enabled || rps->max_freq <= rps->min_freq)
+ if (!intel_rps_is_enabled(rps))
return 0;
intel_gt_pm_get(gt);
@@ -902,7 +902,7 @@ int live_rps_interrupt(void *arg)
unsigned long saved_heartbeat;
intel_gt_pm_wait_for_idle(engine->gt);
- GEM_BUG_ON(rps->active);
+ GEM_BUG_ON(intel_rps_is_active(rps));
saved_heartbeat = engine_heartbeat_disable(engine);
@@ -987,7 +987,7 @@ int live_rps_power(void *arg)
* that theory.
*/
- if (!rps->enabled || rps->max_freq <= rps->min_freq)
+ if (!intel_rps_is_enabled(rps))
return 0;
if (!librapl_energy_uJ())
@@ -1092,7 +1092,7 @@ int live_rps_dynamic(void *arg)
* moving parts into dynamic reclocking based on load.
*/
- if (!rps->enabled || rps->max_freq <= rps->min_freq)
+ if (!intel_rps_is_enabled(rps))
return 0;
if (igt_spinner_init(&spin, gt))
@@ -1109,7 +1109,7 @@ int live_rps_dynamic(void *arg)
continue;
intel_gt_pm_wait_for_idle(gt);
- GEM_BUG_ON(rps->active);
+ GEM_BUG_ON(intel_rps_is_active(rps));
rps->cur_freq = rps->min_freq;
intel_engine_pm_get(engine);
diff --git a/drivers/gpu/drm/i915/i915_debugfs.c b/drivers/gpu/drm/i915/i915_debugfs.c
index e3c5ff25c807..c09e1afb5f79 100644
--- a/drivers/gpu/drm/i915/i915_debugfs.c
+++ b/drivers/gpu/drm/i915/i915_debugfs.c
@@ -1199,7 +1199,8 @@ static int i915_rps_boost_info(struct seq_file *m, void *data)
struct drm_i915_private *dev_priv = node_to_i915(m->private);
struct intel_rps *rps = &dev_priv->gt.rps;
- seq_printf(m, "RPS enabled? %d\n", rps->enabled);
+ seq_printf(m, "RPS enabled? %s\n", yesno(intel_rps_is_enabled(rps)));
+ seq_printf(m, "RPS active? %s\n", yesno(intel_rps_is_active(rps)));
seq_printf(m, "GPU busy? %s\n", yesno(dev_priv->gt.awake));
seq_printf(m, "Boosts outstanding? %d\n",
atomic_read(&rps->num_waiters));
@@ -1219,7 +1220,7 @@ static int i915_rps_boost_info(struct seq_file *m, void *data)
seq_printf(m, "Wait boosts: %d\n", atomic_read(&rps->boosts));
- if (INTEL_GEN(dev_priv) >= 6 && rps->enabled && dev_priv->gt.awake) {
+ if (INTEL_GEN(dev_priv) >= 6 && intel_rps_is_active(rps)) {
u32 rpup, rpupei;
u32 rpdown, rpdownei;
--
2.20.1
_______________________________________________
Intel-gfx mailing list
Intel-gfx@xxxxxxxxxxxxxxxxxxxxx
https://lists.freedesktop.org/mailman/listinfo/intel-gfx
