diff options
| author | Boris Brezillon <boris.brezillon@free-electrons.com> | 2018-01-12 12:09:26 +0300 |
|---|---|---|
| committer | Eric Anholt <eric@anholt.net> | 2018-02-11 01:23:26 +0300 |
| commit | 65101d8c9108201118efa7e08f4e2c57f438deb9 (patch) | |
| tree | 3b2097206a11dcf36622a1c64fd5fee5d3dee15e /drivers/gpu/drm/vc4/vc4_drv.c | |
| parent | 9c950e468cb5913d223282a05e6cd22fecce5ac8 (diff) | |
| download | linux-65101d8c9108201118efa7e08f4e2c57f438deb9.tar.xz | |
drm/vc4: Expose performance counters to userspace
The V3D engine has various hardware counters which might be interesting
to userspace performance analysis tools.
Expose new ioctls to create/destroy a performance monitor object and
query the counter values of this perfmance monitor.
Note that a perfomance monitor is given an ID that is only valid on the
file descriptor it has been allocated from. A performance monitor can be
attached to a CL submission and the driver will enable HW counters for
this request and update the performance monitor values at the end of the
job.
Signed-off-by: Boris Brezillon <boris.brezillon@free-electrons.com>
Reviewed-by: Eric Anholt <eric@anholt.net>
Signed-off-by: Eric Anholt <eric@anholt.net>
Link: https://patchwork.freedesktop.org/patch/msgid/20180112090926.12538-1-boris.brezillon@free-electrons.com
Diffstat (limited to 'drivers/gpu/drm/vc4/vc4_drv.c')
| -rw-r--r-- | drivers/gpu/drm/vc4/vc4_drv.c | 26 |
1 files changed, 26 insertions, 0 deletions
diff --git a/drivers/gpu/drm/vc4/vc4_drv.c b/drivers/gpu/drm/vc4/vc4_drv.c index ceb385fd69c5..94b99c90425a 100644 --- a/drivers/gpu/drm/vc4/vc4_drv.c +++ b/drivers/gpu/drm/vc4/vc4_drv.c @@ -101,6 +101,7 @@ static int vc4_get_param_ioctl(struct drm_device *dev, void *data, case DRM_VC4_PARAM_SUPPORTS_THREADED_FS: case DRM_VC4_PARAM_SUPPORTS_FIXED_RCL_ORDER: case DRM_VC4_PARAM_SUPPORTS_MADVISE: + case DRM_VC4_PARAM_SUPPORTS_PERFMON: args->value = true; break; default: @@ -111,6 +112,26 @@ static int vc4_get_param_ioctl(struct drm_device *dev, void *data, return 0; } +static int vc4_open(struct drm_device *dev, struct drm_file *file) +{ + struct vc4_file *vc4file; + + vc4file = kzalloc(sizeof(*vc4file), GFP_KERNEL); + if (!vc4file) + return -ENOMEM; + + vc4_perfmon_open_file(vc4file); + file->driver_priv = vc4file; + return 0; +} + +static void vc4_close(struct drm_device *dev, struct drm_file *file) +{ + struct vc4_file *vc4file = file->driver_priv; + + vc4_perfmon_close_file(vc4file); +} + static const struct vm_operations_struct vc4_vm_ops = { .fault = vc4_fault, .open = drm_gem_vm_open, @@ -143,6 +164,9 @@ static const struct drm_ioctl_desc vc4_drm_ioctls[] = { DRM_IOCTL_DEF_DRV(VC4_GET_TILING, vc4_get_tiling_ioctl, DRM_RENDER_ALLOW), DRM_IOCTL_DEF_DRV(VC4_LABEL_BO, vc4_label_bo_ioctl, DRM_RENDER_ALLOW), DRM_IOCTL_DEF_DRV(VC4_GEM_MADVISE, vc4_gem_madvise_ioctl, DRM_RENDER_ALLOW), + DRM_IOCTL_DEF_DRV(VC4_PERFMON_CREATE, vc4_perfmon_create_ioctl, DRM_RENDER_ALLOW), + DRM_IOCTL_DEF_DRV(VC4_PERFMON_DESTROY, vc4_perfmon_destroy_ioctl, DRM_RENDER_ALLOW), + DRM_IOCTL_DEF_DRV(VC4_PERFMON_GET_VALUES, vc4_perfmon_get_values_ioctl, DRM_RENDER_ALLOW), }; static struct drm_driver vc4_drm_driver = { @@ -153,6 +177,8 @@ static struct drm_driver vc4_drm_driver = { DRIVER_RENDER | DRIVER_PRIME), .lastclose = drm_fb_helper_lastclose, + .open = vc4_open, + .postclose = vc4_close, .irq_handler = vc4_irq, .irq_preinstall = vc4_irq_preinstall, .irq_postinstall = vc4_irq_postinstall, |