Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tj/percpu

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

diff --git a/lib/Kconfig.debug b/lib/Kconfig.debug
index 4c32b1a..55d2acc 100644 (file)
--- a/lib/Kconfig.debug
+++ b/lib/Kconfig.debug
@@ -359,6 +359,18 @@ config DEBUG_KMEMLEAK
          In order to access the kmemleak file, debugfs needs to be
          mounted (usually at /sys/kernel/debug).
 
+config DEBUG_KMEMLEAK_EARLY_LOG_SIZE
+       int "Maximum kmemleak early log entries"
+       depends on DEBUG_KMEMLEAK
+       range 200 2000
+       default 400
+       help
+         Kmemleak must track all the memory allocations to avoid
+         reporting false positives. Since memory may be allocated or
+         freed before kmemleak is initialised, an early log buffer is
+         used to store these actions. If kmemleak reports "early log
+         buffer exceeded", please increase this value.
+
 config DEBUG_KMEMLEAK_TEST
        tristate "Simple test for the kernel memory leak detector"
        depends on DEBUG_KMEMLEAK
@@ -641,6 +653,21 @@ config DEBUG_NOTIFIERS
          This is a relatively cheap check but if you care about maximum
          performance, say N.
 
+config DEBUG_CREDENTIALS
+       bool "Debug credential management"
+       depends on DEBUG_KERNEL
+       help
+         Enable this to turn on some debug checking for credential
+         management.  The additional code keeps track of the number of
+         pointers from task_structs to any given cred struct, and checks to
+         see that this number never exceeds the usage count of the cred
+         struct.
+
+         Furthermore, if SELinux is enabled, this also checks that the
+         security pointer in the cred struct is never seen to be invalid.
+
+         If unsure, say N.
+
 #
 # Select this config option from the architecture Kconfig, if it
 # it is preferred to always offer frame pointers as a config
@@ -713,7 +740,7 @@ config RCU_TORTURE_TEST_RUNNABLE
 
 config RCU_CPU_STALL_DETECTOR
        bool "Check for stalled CPUs delaying RCU grace periods"
-       depends on CLASSIC_RCU || TREE_RCU
+       depends on TREE_RCU || TREE_PREEMPT_RCU
        default n
        help
          This option causes RCU to printk information on which
@@ -778,6 +805,21 @@ config DEBUG_BLOCK_EXT_DEVT
 
          Say N if you are unsure.
 
+config DEBUG_FORCE_WEAK_PER_CPU
+       bool "Force weak per-cpu definitions"
+       depends on DEBUG_KERNEL
+       help
+         s390 and alpha require percpu variables in modules to be
+         defined weak to work around addressing range issue which
+         puts the following two restrictions on percpu variable
+         definitions.
+
+         1. percpu symbols must be unique whether static or not
+         2. percpu variables can't be defined inside a function
+
+         To ensure that generic code follows the above rules, this
+         option forces all percpu variables to be defined as weak.
+
 config LKDTM
        tristate "Linux Kernel Dump Test Tool Module"
        depends on DEBUG_KERNEL