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* Added the possibility to debug latency issues with spinlocks.

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* When DEBUG_SPINLOCK_LATENCIES is 1, the system will panic if any spinlock is
  held longer than DEBUG_LATENCY micro seconds (currently 200). If your system
  doesn't boot anymore, a new safemode setting can disable the panic.
* Besides some problems during boot when the MTRRs are set up, 200 usecs work
  fine here if all debug output is turned off (the output stuff is definitely
  problematic, though I don't have a good idea on how to improve upon it a lot).
* Renamed the formerly BeOS compatible safemode settings to look better; there
  is no need to be compatible there.


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@33953 a95241bf-73f2-0310-859d-f6bbb57e9c96
This commit is contained in:
Axel Dörfler
2009-11-08 20:26:48 +00:00
parent bec53b590f
commit 6242fd5977
4 changed files with 110 additions and 24 deletions
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build/config_headers/kernel_debug_config.h
+2
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@@ -75,6 +75,8 @@
// available.
#define DEBUG_SPINLOCKS KDEBUG_LEVEL_2
#define DEBUG_SPINLOCK_LATENCIES 0
// VM