Merge branches 'pm-core', 'pm-qos', 'pm-domains' and 'pm-opp'

[linux.git] / lib / Kconfig.debug

diff --git a/lib/Kconfig.debug b/lib/Kconfig.debug
index 9db831439aa2d85eee050de1146ebd32e63e5660..acedbe626d4798347312b828d9cbafeba117e7da 100644 (file)
--- a/lib/Kconfig.debug
+++ b/lib/Kconfig.debug
@@ -716,6 +716,19 @@ source "lib/Kconfig.kmemcheck"
 
 source "lib/Kconfig.kasan"
 
+config DEBUG_REFCOUNT
+       bool "Verbose refcount checks"
+       help
+         Say Y here if you want reference counters (refcount_t and kref) to
+         generate WARNs on dubious usage. Without this refcount_t will still
+         be a saturating counter and avoid Use-After-Free by turning it into
+         a resource leak Denial-Of-Service.
+
+         Use of this option will increase kernel text size but will alert the
+         admin of potential abuse.
+
+         If in doubt, say "N".
+
 endmenu # "Memory Debugging"
 
 config ARCH_HAS_KCOV
@@ -980,20 +993,6 @@ config DEBUG_TIMEKEEPING
 
          If unsure, say N.
 
-config TIMER_STATS
-       bool "Collect kernel timers statistics"
-       depends on DEBUG_KERNEL && PROC_FS
-       help
-         If you say Y here, additional code will be inserted into the
-         timer routines to collect statistics about kernel timers being
-         reprogrammed. The statistics can be read from /proc/timer_stats.
-         The statistics collection is started by writing 1 to /proc/timer_stats,
-         writing 0 stops it. This feature is useful to collect information
-         about timer usage patterns in kernel and userspace. This feature
-         is lightweight if enabled in the kernel config but not activated
-         (it defaults to deactivated on bootup and will only be activated
-         if some application like powertop activates it explicitly).
-
 config DEBUG_PREEMPT
        bool "Debug preemptible kernel"
        depends on DEBUG_KERNEL && PREEMPT && TRACE_IRQFLAGS_SUPPORT
@@ -1180,6 +1179,18 @@ config LOCK_TORTURE_TEST
          Say M if you want these torture tests to build as a module.
          Say N if you are unsure.
 
+config WW_MUTEX_SELFTEST
+       tristate "Wait/wound mutex selftests"
+       help
+         This option provides a kernel module that runs tests on the
+         on the struct ww_mutex locking API.
+
+         It is recommended to enable DEBUG_WW_MUTEX_SLOWPATH in conjunction
+         with this test harness.
+
+         Say M if you want these self tests to build as a module.
+         Say N if you are unsure.
+
 endmenu # lock debugging
 
 config TRACE_IRQFLAGS