diff options
| author | Zhao Yakui <yakui.zhao@intel.com> | 2009-07-20 13:48:06 +0800 |
|---|---|---|
| committer | Dave Airlie <airlied@redhat.com> | 2009-08-04 14:02:41 +1000 |
| commit | 87fdff81cd2d770f0adc742e21eb5e062ad20def (patch) | |
| tree | 5fe04660ad959d7d15eeb7969dfb21c4f4965ff1 | |
| parent | f940f37f022f7392ab81a35516222cbd46110b42 (diff) | |
| download | linux-87fdff81cd2d770f0adc742e21eb5e062ad20def.tar.bz2 | |
DRM: Add the explanation about DRM debug level
Add the explanation about DRM debug level in the drmP header file. This is to
explain how/where to use the different DRM debug level.
Signed-off-by: Zhao Yakui <yakui.zhao@intel.com>
Signed-off-by: Dave Airlie <airlied@redhat.com>
| -rw-r--r-- | include/drm/drmP.h | 31 |
1 files changed, 31 insertions, 0 deletions
diff --git a/include/drm/drmP.h b/include/drm/drmP.h index 6513d16cd029..e0f1c1fee58b 100644 --- a/include/drm/drmP.h +++ b/include/drm/drmP.h @@ -88,6 +88,37 @@ struct drm_device; #define DRM_UT_CORE 0x01 #define DRM_UT_DRIVER 0x02 #define DRM_UT_KMS 0x04 +/* + * Three debug levels are defined. + * drm_core, drm_driver, drm_kms + * drm_core level can be used in the generic drm code. For example: + * drm_ioctl, drm_mm, drm_memory + * The macro definiton of DRM_DEBUG is used. + * DRM_DEBUG(fmt, args...) + * The debug info by using the DRM_DEBUG can be obtained by adding + * the boot option of "drm.debug=1". + * + * drm_driver level can be used in the specific drm driver. It is used + * to add the debug info related with the drm driver. For example: + * i915_drv, i915_dma, i915_gem, radeon_drv, + * The macro definition of DRM_DEBUG_DRIVER can be used. + * DRM_DEBUG_DRIVER(fmt, args...) + * The debug info by using the DRM_DEBUG_DRIVER can be obtained by + * adding the boot option of "drm.debug=0x02" + * + * drm_kms level can be used in the KMS code related with specific drm driver. + * It is used to add the debug info related with KMS mode. For example: + * the connector/crtc , + * The macro definition of DRM_DEBUG_KMS can be used. + * DRM_DEBUG_KMS(fmt, args...) + * The debug info by using the DRM_DEBUG_KMS can be obtained by + * adding the boot option of "drm.debug=0x04" + * + * If we add the boot option of "drm.debug=0x06", we can get the debug info by + * using the DRM_DEBUG_KMS and DRM_DEBUG_DRIVER. + * If we add the boot option of "drm.debug=0x05", we can get the debug info by + * using the DRM_DEBUG_KMS and DRM_DEBUG. + */ extern void drm_ut_debug_printk(unsigned int request_level, const char *prefix, |