On Fri, 30 Mar 2018 10:32:01 +0200, Sagar Arun Kamble
<sagar.a.kam...@intel.com> wrote:
When SLPC is controlling frequency requests, RPS state related to
autotuning is no longer valid. Make user aware through banner
upfront. Value read from register RPNSWREQ likely has the frequency
requested last by GuC SLPC.
v1: Replace HAS_SLPC with intel_slpc_active (Paulo)
Avoid magic numbers (Nick)
Use a function for repeated code (Jon)
v2: Add "SLPC Active" to i915_frequency_info output and
don't update cur_freq as it is driver internal request. (Chris)
v3: Removing sysfs interface gt_req_freq_mhz out of this patch
for proper division of functionality. (Sagar)
v4: idle_freq, boost_freq are also not used with SLPC.
v5: Added SLPC banner to i915_rps_boost_info and keep printing
driver internal values. (Chris)
v6: Commit message update.
v7: Rebase.
v8: Rebase.
Signed-off-by: Tom O'Rourke <Tom.O'rou...@intel.com>
Signed-off-by: Sagar Arun Kamble <sagar.a.kam...@intel.com>
Cc: Chris Wilson <ch...@chris-wilson.co.uk>
Cc: Joonas Lahtinen <joonas.lahti...@linux.intel.com>
Cc: Radoslaw Szwichtenberg <radoslaw.szwichtenb...@intel.com>
Cc: Michal Wajdeczko <michal.wajdec...@intel.com>
Cc: Sujaritha Sundaresan <sujaritha.sundare...@intel.com>
Cc: Jeff McGee <jeff.mc...@intel.com>
---
drivers/gpu/drm/i915/i915_debugfs.c | 6 ++++++
1 file changed, 6 insertions(+)
diff --git a/drivers/gpu/drm/i915/i915_debugfs.c
b/drivers/gpu/drm/i915/i915_debugfs.c
index 1a66507..5d2ac24 100644
--- a/drivers/gpu/drm/i915/i915_debugfs.c
+++ b/drivers/gpu/drm/i915/i915_debugfs.c
@@ -1068,6 +1068,9 @@ static int i915_frequency_info(struct seq_file *m,
void *unused)
struct intel_rps *rps = &dev_priv->gt_pm.rps;
int ret = 0;
+ if (USES_GUC_SLPC(dev_priv))
+ seq_puts(m, "SLPC Active\n");
+
intel_runtime_pm_get(dev_priv);
if (IS_GEN5(dev_priv)) {
@@ -2209,6 +2212,9 @@ static int i915_rps_boost_info(struct seq_file *m,
void *data)
struct intel_rps *rps = &dev_priv->gt_pm.rps;
struct drm_file *file;
+ if (USES_GUC_SLPC(dev_priv))
+ seq_puts(m, "SLPC Active\n");
[bikeshed] maybe to match below pattern:
seq_puts(m, "SLPC active? %s\n", yesno(true));
or
seq_puts(m, "SLPC active? %s\n", yesno((USES_GUC_SLPC(dev_priv)));
+
seq_printf(m, "RPS enabled? %d\n", rps->enabled);
seq_printf(m, "GPU busy? %s [%d requests]\n",
yesno(dev_priv->gt.awake), dev_priv->gt.active_requests);
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