For convenience when debugging user issues show the autotuning
RPS parameters in debugfs/i915_rps_boost_info.
v2: Refine the presentation
Signed-off-by: Chris Wilson <chris@xxxxxxxxxxxxxxxxxx>
Cc: fritsch@xxxxxxx
---
drivers/gpu/drm/i915/i915_debugfs.c | 43 +++++++++++++++++++++++++++++++++++--
1 file changed, 41 insertions(+), 2 deletions(-)
diff --git a/drivers/gpu/drm/i915/i915_debugfs.c b/drivers/gpu/drm/i915/i915_debugfs.c
index c461072da142..8d302906d768 100644
--- a/drivers/gpu/drm/i915/i915_debugfs.c
+++ b/drivers/gpu/drm/i915/i915_debugfs.c
@@ -2441,6 +2441,16 @@ static int count_irq_waiters(struct drm_i915_private *i915)
return count;
}
+static const char *rps_power_to_str(int power)
+{
+ switch (power) {
+ default: return "unknown";
+ case LOW_POWER: return "low power";
+ case BETWEEN: return "mixed";
+ case HIGH_POWER: return "high power";
+ }
+}
+
static int i915_rps_boost_info(struct seq_file *m, void *data)
{
struct drm_info_node *node = m->private;
@@ -2452,12 +2462,17 @@ static int i915_rps_boost_info(struct seq_file *m, void *data)
seq_printf(m, "GPU busy? %s [%x]\n",
yesno(dev_priv->gt.awake), dev_priv->gt.active_engines);
seq_printf(m, "CPU waiting? %d\n", count_irq_waiters(dev_priv));
- seq_printf(m, "Frequency requested %d; min hard:%d, soft:%d; max soft:%d, hard:%d\n",
- intel_gpu_freq(dev_priv, dev_priv->rps.cur_freq),
+ seq_printf(m, "Frequency requested %d\n",
+ intel_gpu_freq(dev_priv, dev_priv->rps.cur_freq));
+ seq_printf(m, " min hard:%d, soft:%d; max soft:%d, hard:%d\n",
intel_gpu_freq(dev_priv, dev_priv->rps.min_freq),
intel_gpu_freq(dev_priv, dev_priv->rps.min_freq_softlimit),
intel_gpu_freq(dev_priv, dev_priv->rps.max_freq_softlimit),
intel_gpu_freq(dev_priv, dev_priv->rps.max_freq));
+ seq_printf(m, " idle:%d, efficient:%d, boost:%d\n",
+ intel_gpu_freq(dev_priv, dev_priv->rps.idle_freq),
+ intel_gpu_freq(dev_priv, dev_priv->rps.efficient_freq),
+ intel_gpu_freq(dev_priv, dev_priv->rps.boost_freq));
mutex_lock(&dev->filelist_mutex);
spin_lock(&dev_priv->rps.client_lock);
@@ -2478,6 +2493,30 @@ static int i915_rps_boost_info(struct seq_file *m, void *data)
spin_unlock(&dev_priv->rps.client_lock);
mutex_unlock(&dev->filelist_mutex);
+ if (INTEL_GEN(dev_priv) >= 6 &&
+ dev_priv->rps.enabled &&
+ dev_priv->gt.active_engines) {
+ u32 rpupei, rpcurup;
+ u32 rpdownei, rpcurdown;
+
+ intel_uncore_forcewake_get(dev_priv, FORCEWAKE_ALL);
+ rpupei = I915_READ_FW(GEN6_RP_CUR_UP_EI) & GEN6_CURICONT_MASK;
+ rpcurup = I915_READ_FW(GEN6_RP_CUR_UP) & GEN6_CURBSYTAVG_MASK;
+ rpdownei = I915_READ_FW(GEN6_RP_CUR_DOWN_EI) & GEN6_CURIAVG_MASK;
+ rpcurdown = I915_READ_FW(GEN6_RP_CUR_DOWN) & GEN6_CURBSYTAVG_MASK;
+ intel_uncore_forcewake_put(dev_priv, FORCEWAKE_ALL);
+
+ seq_printf(m, "\nRPS Autotuning (current \"%s\" window):\n",
+ rps_power_to_str(dev_priv->rps.power));
+ seq_printf(m, " Avg. up: %d%% [above threshold? %d%%]\n",
+ 100*rpcurup/rpupei,
+ dev_priv->rps.up_threshold);
+ seq_printf(m, " Avg. down: %d%% [below threshold? %d%%]\n",
+ 100*rpcurdown/rpdownei,
+ dev_priv->rps.down_threshold);
+ } else
+ seq_printf(m, "\nRPS Autotuning inactive\n");
+
return 0;
}
--
2.8.1
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