- Change migration-in rule slightly: previously, if your score was less

than the max, it was bumped, and then if you were above the threshhold
    you got moved in. Instead, do the above-threshhold check separate from
    score starting out less than max. While this will likely make thrashing
    cases worse, I hope it will fix some issues with long term performance
    (think of an xcompmgr with a backbuffer it's doing only accelerated
    operations to. If some new pixmap comes in and bumps it out, even once,
    it will never get a chance to re-migrate because its score will be
    maxed). Change migration-out to be the same way for symmetry, though it
    shouldn't ever affect anything.
- Fix a lot of debugging output, both in terms of printing quality, and
    completeness. The fallback debugging covers a lot more now, pointing
    out new areas for improvement. Debugging toggles are now centralized in
    exaPriv.h.

exa/exa_unaccel.c

@@ -23,17 +23,6 @@
 
 #include "exaPriv.h"
 
-#define EXA_TRACE_FALL	0
-
-#if EXA_TRACE_FALL
-#define EXA_FALLBACK(x)     					\
-do {								\
-	ErrorF("EXA fallback at %s: ", __FUNCTION__);		\
-	ErrorF x;						\
-} while (0)
-#else
-#define EXA_FALLBACK(x)
-#endif
 /*
  * These functions wrap the low-level fb rendering functions and
  * synchronize framebuffer/accelerated drawing by stalling until