diff options
| author | Chris Wilson <chris@chris-wilson.co.uk> | 2015-04-27 15:41:20 +0300 |
|---|---|---|
| committer | Daniel Vetter <daniel.vetter@ffwll.ch> | 2015-05-21 16:11:43 +0300 |
| commit | a6f766f3975185af66a31a2cea2cd38721645999 (patch) | |
| tree | 71b34650fbd4dd16d690a9a23eb2702ae0d31fa2 /drivers/gpu/drm/i915/i915_debugfs.c | |
| parent | 03ade51185596a1d1028531c78fda557f244d676 (diff) | |
| download | linux-a6f766f3975185af66a31a2cea2cd38721645999.tar.xz | |
drm/i915: Limit ring synchronisation (sw sempahores) RPS boosts
Ring switches can occur many times per frame, and are often out of
control, causing frequent RPS boosting for no practical benefit. Treat
the sw semaphore synchronisation as a separate client and only allow it
to boost once per busy/idle cycle.
Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
[danvet: s/rq/req/]
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Diffstat (limited to 'drivers/gpu/drm/i915/i915_debugfs.c')
| -rw-r--r-- | drivers/gpu/drm/i915/i915_debugfs.c | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/drivers/gpu/drm/i915/i915_debugfs.c b/drivers/gpu/drm/i915/i915_debugfs.c index 5fceb9400a91..2ac71483cf12 100644 --- a/drivers/gpu/drm/i915/i915_debugfs.c +++ b/drivers/gpu/drm/i915/i915_debugfs.c @@ -2311,6 +2311,7 @@ static int i915_rps_boost_info(struct seq_file *m, void *data) list_empty(&file_priv->rps_boost) ? "" : ", active"); rcu_read_unlock(); } + seq_printf(m, "Semaphore boosts: %d\n", dev_priv->rps.semaphores.rps_boosts); seq_printf(m, "Kernel boosts: %d\n", dev_priv->rps.boosts); mutex_unlock(&dev_priv->rps.hw_lock); |