Merge branch 'perf/nmi' into perf/core

[firefly-linux-kernel-4.4.55.git] / lib / Kconfig.debug

diff --git a/lib/Kconfig.debug b/lib/Kconfig.debug
index 63968a968443acee62a05c6ded68f5d9a1cc0b83..e2cd7fbf31c05cf6e6bed6a54781e2ad1c99c70b 100644 (file)
--- a/lib/Kconfig.debug
+++ b/lib/Kconfig.debug
@@ -517,6 +517,18 @@ config PROVE_RCU
 
         Say N if you are unsure.
 
+config PROVE_RCU_REPEATEDLY
+       bool "RCU debugging: don't disable PROVE_RCU on first splat"
+       depends on PROVE_RCU
+       default n
+       help
+        By itself, PROVE_RCU will disable checking upon issuing the
+        first warning (or "splat").  This feature prevents such
+        disabling, allowing multiple RCU-lockdep warnings to be printed
+        on a single reboot.
+
+        Say N if you are unsure.
+
 config LOCKDEP
        bool
        depends on DEBUG_KERNEL && TRACE_IRQFLAGS_SUPPORT && STACKTRACE_SUPPORT && LOCKDEP_SUPPORT
@@ -798,7 +810,7 @@ config RCU_CPU_STALL_DETECTOR
 config RCU_CPU_STALL_VERBOSE
        bool "Print additional per-task information for RCU_CPU_STALL_DETECTOR"
        depends on RCU_CPU_STALL_DETECTOR && TREE_PREEMPT_RCU
-       default n
+       default y
        help
          This option causes RCU to printk detailed per-task information
          for any tasks that are stalling the current RCU grace period.
@@ -891,6 +903,18 @@ config LKDTM
        Documentation on how to use the module can be found in
        Documentation/fault-injection/provoke-crashes.txt
 
+config CPU_NOTIFIER_ERROR_INJECT
+       tristate "CPU notifier error injection module"
+       depends on HOTPLUG_CPU && DEBUG_KERNEL
+       help
+         This option provides a kernel module that can be used to test
+         the error handling of the cpu notifiers
+
+         To compile this code as a module, choose M here: the module will
+         be called cpu-notifier-error-inject.
+
+         If unsure, say N.
+
 config FAULT_INJECTION
        bool "Fault-injection framework"
        depends on DEBUG_KERNEL
@@ -1032,10 +1056,10 @@ config DYNAMIC_DEBUG
 
          Usage:
 
-         Dynamic debugging is controlled via the 'dynamic_debug/ddebug' file,
+         Dynamic debugging is controlled via the 'dynamic_debug/control' file,
          which is contained in the 'debugfs' filesystem. Thus, the debugfs
          filesystem must first be mounted before making use of this feature.
-         We refer the control file as: <debugfs>/dynamic_debug/ddebug. This
+         We refer the control file as: <debugfs>/dynamic_debug/control. This
          file contains a list of the debug statements that can be enabled. The
          format for each line of the file is:
 
@@ -1050,7 +1074,7 @@ config DYNAMIC_DEBUG
 
          From a live system:
 
-               nullarbor:~ # cat <debugfs>/dynamic_debug/ddebug
+               nullarbor:~ # cat <debugfs>/dynamic_debug/control
                # filename:lineno [module]function flags format
                fs/aio.c:222 [aio]__put_ioctx - "__put_ioctx:\040freeing\040%p\012"
                fs/aio.c:248 [aio]ioctx_alloc - "ENOMEM:\040nr_events\040too\040high\012"
@@ -1060,23 +1084,23 @@ config DYNAMIC_DEBUG
 
                // enable the message at line 1603 of file svcsock.c
                nullarbor:~ # echo -n 'file svcsock.c line 1603 +p' >
-                                               <debugfs>/dynamic_debug/ddebug
+                                               <debugfs>/dynamic_debug/control
 
                // enable all the messages in file svcsock.c
                nullarbor:~ # echo -n 'file svcsock.c +p' >
-                                               <debugfs>/dynamic_debug/ddebug
+                                               <debugfs>/dynamic_debug/control
 
                // enable all the messages in the NFS server module
                nullarbor:~ # echo -n 'module nfsd +p' >
-                                               <debugfs>/dynamic_debug/ddebug
+                                               <debugfs>/dynamic_debug/control
 
                // enable all 12 messages in the function svc_process()
                nullarbor:~ # echo -n 'func svc_process +p' >
-                                               <debugfs>/dynamic_debug/ddebug
+                                               <debugfs>/dynamic_debug/control
 
                // disable all 12 messages in the function svc_process()
                nullarbor:~ # echo -n 'func svc_process -p' >
-                                               <debugfs>/dynamic_debug/ddebug
+                                               <debugfs>/dynamic_debug/control
 
          See Documentation/dynamic-debug-howto.txt for additional information.
 
@@ -1091,6 +1115,13 @@ config DMA_API_DEBUG
          This option causes a performance degredation.  Use only if you want
          to debug device drivers. If unsure, say N.
 
+config ATOMIC64_SELFTEST
+       bool "Perform an atomic64_t self-test at boot"
+       help
+         Enable this option to test the atomic64_t functions at boot.
+
+         If unsure, say N.
+
 source "samples/Kconfig"
 
 source "lib/Kconfig.kgdb"