diff options
| author | Lionel Landwerlin <lionel.g.landwerlin@intel.com> | 2017-11-10 19:08:44 +0000 |
|---|---|---|
| committer | Lionel Landwerlin <lionel.g.landwerlin@intel.com> | 2017-11-13 15:59:30 +0000 |
| commit | dab91783338bd3dd42638f89b5f7e34c57773207 (patch) | |
| tree | 4da6049f29ac87cf4fa566ece0f7163be29ed52f /drivers/gpu/drm/i915/i915_debugfs.c | |
| parent | 95690a02fb5d963e62aa16c3796af3dde01f63c9 (diff) | |
drm/i915: expose command stream timestamp frequency to userspace
We use to have this fixed per generation, but starting with CNL userspace
cannot tell just off the PCI ID. Let's make this information available. This
is particularly useful for performance monitoring where much of the
normalization work is done using those timestamps (this include pipeline
statistics in both GL & Vulkan as well as OA reports).
v2: Use variables for 24MHz/19.2MHz values (Ewelina)
Renamed function & coding style (Sagar)
v3: Fix frequency read on Broadwell (Sagar)
Fix missing divide by 4 on <= gen4 (Sagar)
Signed-off-by: Lionel Landwerlin <lionel.g.landwerlin@intel.com>
Tested-by: Rafael Antognolli <rafael.antognolli@intel.com>
Reviewed-by: Sagar Arun Kamble <sagar.a.kamble@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20171110190845.32574-7-lionel.g.landwerlin@intel.com
Diffstat (limited to 'drivers/gpu/drm/i915/i915_debugfs.c')
| -rw-r--r-- | drivers/gpu/drm/i915/i915_debugfs.c | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/drivers/gpu/drm/i915/i915_debugfs.c b/drivers/gpu/drm/i915/i915_debugfs.c index cb77aeab4ee2..82ff186108f1 100644 --- a/drivers/gpu/drm/i915/i915_debugfs.c +++ b/drivers/gpu/drm/i915/i915_debugfs.c @@ -3269,6 +3269,8 @@ static int i915_engine_info(struct seq_file *m, void *unused) yesno(dev_priv->gt.awake)); seq_printf(m, "Global active requests: %d\n", dev_priv->gt.active_requests); + seq_printf(m, "CS timestamp frequency: %llu Hz\n", + dev_priv->info.cs_timestamp_frequency); p = drm_seq_file_printer(m); for_each_engine(engine, dev_priv, id) |