logger_types.h defines many DC_LOG_*() categorized debug wrappers. Many of these use DRM_DEBUG_*, so are controllable using drm.debug, but others use bare pr_debug()s, each with a different class-prefix matching "^[\w+]:"
Use DYNDBG_BITMAP_DESC() to create a parameter/debug_dc, and to define bits to control those pr_debugs by their category.
Signed-off-by: Jim Cromie jim.cromie@gmail.com --- .../gpu/drm/amd/display/dc/core/dc_debug.c | 42 ++++++++++++++++++- 1 file changed, 41 insertions(+), 1 deletion(-)
diff --git a/drivers/gpu/drm/amd/display/dc/core/dc_debug.c b/drivers/gpu/drm/amd/display/dc/core/dc_debug.c index 21be2a684393..3041e0c3d726 100644 --- a/drivers/gpu/drm/amd/display/dc/core/dc_debug.c +++ b/drivers/gpu/drm/amd/display/dc/core/dc_debug.c @@ -36,8 +36,48 @@
#include "resource.h"
-#define DC_LOGGER_INIT(logger) +/* define a drm.debug style dyndbg pr-debug control point */ +unsigned long __debug_dc; +EXPORT_SYMBOL(__debug_dc); + +#define _help(key) "\t\t" key " : help for " key "\n" +#define cmd_help(key) { .prefix = key, .help = "help for " key } + +/* Id like to do these inside DEFINE_DYNDBG_BITMAP, later */ +#define MY_DYNDBG_PARM_DESC(name) \ + "Enable debug output via /sys/module/amdgpu/parameters/" #name \ + ", where each bit enables a debug category.\n" \ + _help("[SURFACE]:") \ + _help("[CURSOR]:") \ + _help("[PFLIP]:") \ + _help("[VBLANK]:") \ + _help("[HW_LINK_TRAINING]:") \ + _help("[HW_AUDIO]:") \ + _help("[SCALER]:") \ + _help("[BIOS]:") \ + _help("[BANDWIDTH_CALCS]:") \ + _help("[DML]:") \ + _help("[IF_TRACE]:") \ + _help("[GAMMA]:") \ + _help("[SMU_MSG]:") +MODULE_PARM_DESC(debug_dc, MY_DYNDBG_PARM_DESC(name)); + +DEFINE_DYNDBG_BITMAP(debug_dc, &__debug_dc, + MY_DYNDBG_PARM_DESC(debug_dc), + cmd_help("[CURSOR]:"), + cmd_help("[PFLIP]:"), + cmd_help("[VBLANK]:"), + cmd_help("[HW_LINK_TRAINING]:"), + cmd_help("[HW_AUDIO]:"), + cmd_help("[SCALER]:"), + cmd_help("[BIOS]:"), + cmd_help("[BANDWIDTH_CALCS]:"), + cmd_help("[DML]:"), + cmd_help("[IF_TRACE]:"), + cmd_help("[GAMMA]:"), + cmd_help("[SMU_MSG]:"));
+#define DC_LOGGER_INIT(logger)
#define SURFACE_TRACE(...) do {\ if (dc->debug.surface_trace) \