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authorVille Syrjälä <ville.syrjala@linux.intel.com>2015-10-09 22:57:37 +0300
committerDaniel Vetter <daniel.vetter@ffwll.ch>2015-10-16 15:50:55 +0200
commit235fabe09b46469adad2c9e4cb0563758155187c (patch)
tree2caea405b0ba3053a0224da136fc38cad965e14e /include/drm
parent44844892cb94c4a6a550c0e7bfa9c667f213ee21 (diff)
drm: Add DRM_DEBUG_VBL()
Add a new debug class for _verbose_ debug message from the vblank code. That is message we spew out potentially for every vblank interrupt. Thierry already got annoyed at the spew, and now I managed to lock up my box with these debug prints (seems serial console + a few debug prints every vblank aren't a good combination). Or should I maybe call it DRM_DEBUG_IRQ? Cc: Thierry Reding <thierry.reding@gmail.com> Signed-off-by: Ville Syrjälä <ville.syrjala@linux.intel.com> Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Diffstat (limited to 'include/drm')
-rw-r--r--include/drm/drmP.h11
1 files changed, 10 insertions, 1 deletions
diff --git a/include/drm/drmP.h b/include/drm/drmP.h
index 3dc56d3413b7..4d3b842f4319 100644
--- a/include/drm/drmP.h
+++ b/include/drm/drmP.h
@@ -107,6 +107,9 @@ struct dma_buf_attachment;
* ATOMIC: used in the atomic code.
* This is the category used by the DRM_DEBUG_ATOMIC() macro.
*
+ * VBL: used for verbose debug message in the vblank code
+ * This is the category used by the DRM_DEBUG_VBL() macro.
+ *
* Enabling verbose debug messages is done through the drm.debug parameter,
* each category being enabled by a bit.
*
@@ -114,7 +117,7 @@ struct dma_buf_attachment;
* drm.debug=0x2 will enable DRIVER messages
* drm.debug=0x3 will enable CORE and DRIVER messages
* ...
- * drm.debug=0xf will enable all messages
+ * drm.debug=0x3f will enable all messages
*
* An interesting feature is that it's possible to enable verbose logging at
* run-time by echoing the debug value in its sysfs node:
@@ -125,6 +128,7 @@ struct dma_buf_attachment;
#define DRM_UT_KMS 0x04
#define DRM_UT_PRIME 0x08
#define DRM_UT_ATOMIC 0x10
+#define DRM_UT_VBL 0x20
extern __printf(2, 3)
void drm_ut_debug_printk(const char *function_name,
@@ -217,6 +221,11 @@ void drm_err(const char *format, ...);
if (unlikely(drm_debug & DRM_UT_ATOMIC)) \
drm_ut_debug_printk(__func__, fmt, ##args); \
} while (0)
+#define DRM_DEBUG_VBL(fmt, args...) \
+ do { \
+ if (unlikely(drm_debug & DRM_UT_VBL)) \
+ drm_ut_debug_printk(__func__, fmt, ##args); \
+ } while (0)
/*@}*/

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