diff options
Diffstat (limited to 'sys')
| -rw-r--r-- | sys/conf/NOTES | 6 | ||||
| -rw-r--r-- | sys/conf/options | 2 | ||||
| -rw-r--r-- | sys/i386/conf/NOTES | 6 |
3 files changed, 14 insertions, 0 deletions
diff --git a/sys/conf/NOTES b/sys/conf/NOTES index 222d01a..1103ccf 100644 --- a/sys/conf/NOTES +++ b/sys/conf/NOTES @@ -139,8 +139,14 @@ options APIC_IO # Symmetric (APIC) I/O # MUTEX_DEBUG enables various extra assertions in the mutex code. # WITNESS enables the mutex witness code which detects deadlocks and cycles # during locking operations. +# WITNESS_DDB causes the witness code to drop into the kernel debugger if +# a lock heirarchy violation occurs or if locks are held when going to +# sleep. +# WITNESS_SKIPSPIN disables the witness checks on spin mutexes. options MUTEX_DEBUG options WITNESS +options WITNESS_DDB +options WITNESS_SKIPSPIN ##################################################################### diff --git a/sys/conf/options b/sys/conf/options index 9d21ee6..6f86d74 100644 --- a/sys/conf/options +++ b/sys/conf/options @@ -466,6 +466,8 @@ KTR_ENTRIES opt_global.h KTR_EXTEND opt_global.h MUTEX_DEBUG opt_global.h WITNESS opt_global.h +WITNESS_DDB opt_witness.h +WITNESS_SKIPSPIN opt_witness.h # options for ACPI support ACPI_DEBUG opt_acpi.h diff --git a/sys/i386/conf/NOTES b/sys/i386/conf/NOTES index 222d01a..1103ccf 100644 --- a/sys/i386/conf/NOTES +++ b/sys/i386/conf/NOTES @@ -139,8 +139,14 @@ options APIC_IO # Symmetric (APIC) I/O # MUTEX_DEBUG enables various extra assertions in the mutex code. # WITNESS enables the mutex witness code which detects deadlocks and cycles # during locking operations. +# WITNESS_DDB causes the witness code to drop into the kernel debugger if +# a lock heirarchy violation occurs or if locks are held when going to +# sleep. +# WITNESS_SKIPSPIN disables the witness checks on spin mutexes. options MUTEX_DEBUG options WITNESS +options WITNESS_DDB +options WITNESS_SKIPSPIN ##################################################################### |
