Merge branches 'x86/xen', 'x86/build', 'x86/microcode', 'x86/mm-debug-v2', 'x86/memor...

[pandora-kernel.git] / lib / Kconfig.debug

diff --git a/lib/Kconfig.debug b/lib/Kconfig.debug
index 0b50481..aa81d28 100644 (file)
--- a/lib/Kconfig.debug
+++ b/lib/Kconfig.debug
@@ -495,6 +495,15 @@ config DEBUG_VM
 
          If unsure, say N.
 
+config DEBUG_VIRTUAL
+       bool "Debug VM translations"
+       depends on DEBUG_KERNEL && X86
+       help
+         Enable some costly sanity checks in virtual to page code. This can
+         catch mistakes with virt_to_page() and friends.
+
+         If unsure, say N.
+
 config DEBUG_WRITECOUNT
        bool "Debug filesystem writers count"
        depends on DEBUG_KERNEL
@@ -597,6 +606,19 @@ config RCU_TORTURE_TEST_RUNNABLE
          Say N here if you want the RCU torture tests to start only
          after being manually enabled via /proc.
 
+config RCU_CPU_STALL_DETECTOR
+       bool "Check for stalled CPUs delaying RCU grace periods"
+       depends on CLASSIC_RCU
+       default n
+       help
+         This option causes RCU to printk information on which
+         CPUs are delaying the current grace period, but only when
+         the grace period extends for excessive time periods.
+
+         Say Y if you want RCU to perform such checks.
+
+         Say N if you are unsure.
+
 config KPROBES_SANITY_TEST
        bool "Kprobes sanity tests"
        depends on DEBUG_KERNEL
@@ -624,6 +646,28 @@ config BACKTRACE_SELF_TEST
 
          Say N if you are unsure.
 
+config DEBUG_BLOCK_EXT_DEVT
+        bool "Force extended block device numbers and spread them"
+       depends on DEBUG_KERNEL
+       depends on BLOCK
+       default n
+       help
+         Conventionally, block device numbers are allocated from
+         predetermined contiguous area.  However, extended block area
+         may introduce non-contiguous block device numbers.  This
+         option forces most block device numbers to be allocated from
+         the extended space and spreads them to discover kernel or
+         userland code paths which assume predetermined contiguous
+         device number allocation.
+
+         Note that turning on this debug option shuffles all the
+         device numbers for all IDE and SCSI devices including libata
+         ones, so root partition specified using device number
+         directly (via rdev or root=MAJ:MIN) won't work anymore.
+         Textual device names (root=/dev/sdXn) will continue to work.
+
+         Say N if you are unsure.
+
 config LKDTM
        tristate "Linux Kernel Dump Test Tool Module"
        depends on DEBUG_KERNEL
@@ -661,10 +705,21 @@ config FAIL_PAGE_ALLOC
 
 config FAIL_MAKE_REQUEST
        bool "Fault-injection capability for disk IO"
-       depends on FAULT_INJECTION
+       depends on FAULT_INJECTION && BLOCK
        help
          Provide fault-injection capability for disk IO.
 
+config FAIL_IO_TIMEOUT
+       bool "Faul-injection capability for faking disk interrupts"
+       depends on FAULT_INJECTION && BLOCK
+       help
+         Provide fault-injection capability on end IO handling. This
+         will make the block layer "forget" an interrupt as configured,
+         thus exercising the error handling.
+
+         Only works with drivers that use the generic timeout handling,
+         for others it wont do anything.
+
 config FAULT_INJECTION_DEBUG_FS
        bool "Debugfs entries for fault-injection capabilities"
        depends on FAULT_INJECTION && SYSFS && DEBUG_FS