Merge tag 'v4.15-rc5' of git://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux...

[linux.git] / lib / Kconfig.debug

diff --git a/lib/Kconfig.debug b/lib/Kconfig.debug
index 8ffd891857aba74eb4c309c692e6ae7034bd4a7b..9d5b78aad4c5bcd59a927c654e8010e54269d750 100644 (file)
--- a/lib/Kconfig.debug
+++ b/lib/Kconfig.debug
@@ -756,6 +756,16 @@ config KCOV
 
          For more details, see Documentation/dev-tools/kcov.rst.
 
+config KCOV_ENABLE_COMPARISONS
+       bool "Enable comparison operands collection by KCOV"
+       depends on KCOV
+       default n
+       help
+         KCOV also exposes operands of every comparison in the instrumented
+         code along with operand sizes and PCs of the comparison instructions.
+         These operands can be used by fuzzing engines to improve the quality
+         of fuzzing coverage.
+
 config KCOV_INSTRUMENT_ALL
        bool "Instrument all code by default"
        depends on KCOV
@@ -1089,8 +1099,6 @@ config PROVE_LOCKING
        select DEBUG_MUTEXES
        select DEBUG_RT_MUTEXES if RT_MUTEXES
        select DEBUG_LOCK_ALLOC
-       select LOCKDEP_CROSSRELEASE
-       select LOCKDEP_COMPLETIONS
        select TRACE_IRQFLAGS
        default n
        help
@@ -1160,37 +1168,6 @@ config LOCK_STAT
         CONFIG_LOCK_STAT defines "contended" and "acquired" lock events.
         (CONFIG_LOCKDEP defines "acquire" and "release" events.)
 
-config LOCKDEP_CROSSRELEASE
-       bool
-       help
-        This makes lockdep work for crosslock which is a lock allowed to
-        be released in a different context from the acquisition context.
-        Normally a lock must be released in the context acquiring the lock.
-        However, relexing this constraint helps synchronization primitives
-        such as page locks or completions can use the lock correctness
-        detector, lockdep.
-
-config LOCKDEP_COMPLETIONS
-       bool
-       help
-        A deadlock caused by wait_for_completion() and complete() can be
-        detected by lockdep using crossrelease feature.
-
-config BOOTPARAM_LOCKDEP_CROSSRELEASE_FULLSTACK
-       bool "Enable the boot parameter, crossrelease_fullstack"
-       depends on LOCKDEP_CROSSRELEASE
-       default n
-       help
-        The lockdep "cross-release" feature needs to record stack traces
-        (of calling functions) for all acquisitions, for eventual later
-        use during analysis. By default only a single caller is recorded,
-        because the unwind operation can be very expensive with deeper
-        stack chains.
-
-        However a boot parameter, crossrelease_fullstack, was
-        introduced since sometimes deeper traces are required for full
-        analysis. This option turns on the boot parameter.
-
 config DEBUG_LOCKDEP
        bool "Lock dependency engine debugging"
        depends on DEBUG_KERNEL && LOCKDEP
@@ -1850,6 +1827,15 @@ config TEST_BPF
 
          If unsure, say N.
 
+config TEST_FIND_BIT
+       tristate "Test find_bit functions"
+       default n
+       help
+         This builds the "test_find_bit" module that measure find_*_bit()
+         functions performance.
+
+         If unsure, say N.
+
 config TEST_FIRMWARE
        tristate "Test firmware loading via userspace interface"
        default n