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| author | Robert Bragg <robert@sixbynine.org> | 2016-11-07 19:49:53 +0000 |
|---|---|---|
| committer | Daniel Vetter <daniel.vetter@ffwll.ch> | 2016-11-22 14:38:51 +0100 |
| commit | 442b8c06fc7230772a663a00feeb5ebc61652d6d (patch) | |
| tree | 5f2175c591be44bee585888bf881c83ab50d7fce /drivers/gpu/drm/i915/i915_drv.h | |
| parent | d79651522e89c4ffa8992b48dfe449f0c583f809 (diff) | |
| download | lwn-442b8c06fc7230772a663a00feeb5ebc61652d6d.tar.gz lwn-442b8c06fc7230772a663a00feeb5ebc61652d6d.zip | |
drm/i915: advertise available metrics via sysfs
Each metric set is given a sysfs entry like:
/sys/class/drm/card0/metrics/<guid>/id
This allows userspace to enumerate the specific sets that are available
for the current system. The 'id' file contains an unsigned integer that
can be used to open the associated metric set via
DRM_IOCTL_I915_PERF_OPEN. The <guid> is a globally unique ID for a
specific OA unit register configuration that can be reliably used by
userspace as a key to lookup corresponding counter meta data and
normalization equations.
The guid registry is currently maintained as part of gputop along with
the XML metric set descriptions and code generation scripts, ref:
https://github.com/rib/gputop
> gputop-data/guids.xml
> scripts/update-guids.py
> gputop-data/oa-*.xml
> scripts/i915-perf-kernelgen.py
$ make -C gputop-data -f Makefile.xml SYSFS=1 WHITELIST=RenderBasic
Signed-off-by: Robert Bragg <robert@sixbynine.org>
Reviewed-by: Matthew Auld <matthew.auld@intel.com>
Reviewed-by: Sourab Gupta <sourab.gupta@intel.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Link: http://patchwork.freedesktop.org/patch/msgid/20161107194957.3385-8-robert@sixbynine.org
Diffstat (limited to 'drivers/gpu/drm/i915/i915_drv.h')
| -rw-r--r-- | drivers/gpu/drm/i915/i915_drv.h | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/drivers/gpu/drm/i915/i915_drv.h b/drivers/gpu/drm/i915/i915_drv.h index 3a69e219c7a2..8da752304a91 100644 --- a/drivers/gpu/drm/i915/i915_drv.h +++ b/drivers/gpu/drm/i915/i915_drv.h @@ -2193,6 +2193,8 @@ struct drm_i915_private { struct { bool initialized; + struct kobject *metrics_kobj; + struct mutex lock; struct list_head streams; @@ -3533,6 +3535,8 @@ int intel_engine_cmd_parser(struct intel_engine_cs *engine, /* i915_perf.c */ extern void i915_perf_init(struct drm_i915_private *dev_priv); extern void i915_perf_fini(struct drm_i915_private *dev_priv); +extern void i915_perf_register(struct drm_i915_private *dev_priv); +extern void i915_perf_unregister(struct drm_i915_private *dev_priv); /* i915_suspend.c */ extern int i915_save_state(struct drm_device *dev); |