slob: reduce external fragmentation by using three free lists

[deliverable/linux.git] / init / Kconfig

diff --git a/init/Kconfig b/init/Kconfig
index 0d0bbf218f1f363d2c4732fe7cde4d9ac0909529..aaa7e7d5305e19ce63daa095c1da34f552ea23b7 100644 (file)
--- a/init/Kconfig
+++ b/init/Kconfig
@@ -582,7 +582,6 @@ config SIGNALFD
 config TIMERFD
        bool "Enable timerfd() system call" if EMBEDDED
        select ANON_INODES
-       depends on BROKEN
        default y
        help
          Enable the timerfd() system call that allows to receive timer
@@ -665,6 +664,30 @@ config SLOB
 
 endchoice
 
+config PROFILING
+       bool "Profiling support (EXPERIMENTAL)"
+       help
+         Say Y here to enable the extended profiling support mechanisms used
+         by profilers such as OProfile.
+
+config MARKERS
+       bool "Activate markers"
+       help
+         Place an empty function call at each marker site. Can be
+         dynamically changed for a probe function.
+
+source "arch/Kconfig"
+
+config PROC_PAGE_MONITOR
+       default y
+       depends on PROC_FS && MMU
+       bool "Enable /proc page monitoring" if EMBEDDED
+       help
+         Various /proc files exist to monitor process memory utilization:
+         /proc/pid/smaps, /proc/pid/clear_refs, /proc/pid/pagemap,
+         /proc/kpagecount, and /proc/kpageflags. Disabling these
+          interfaces will reduce the size of the kernel by approximately 4kb.
+
 endmenu                # General setup
 
 config SLABINFO
@@ -775,6 +798,14 @@ config PREEMPT_NOTIFIERS
 choice
        prompt "RCU implementation type:"
        default CLASSIC_RCU
+       help
+         This allows you to choose either the classic RCU implementation
+         that is designed for best read-side performance on non-realtime
+         systems, or the preemptible RCU implementation for best latency
+         on realtime systems.  Note that some kernel preemption modes
+         will restrict your choice.
+
+         Select the default if you are unsure.
 
 config CLASSIC_RCU
        bool "Classic RCU"