ckrm-E13

[linux-2.6.git] / fs / Kconfig

diff --git a/fs/Kconfig b/fs/Kconfig
index 20fb92a..bbae9c9 100644 (file)
--- a/fs/Kconfig
+++ b/fs/Kconfig
@@ -912,6 +912,56 @@ config RAMFS
          To compile this as a module, choose M here: the module will be called
          ramfs.
 
+config RELAYFS_FS
+       tristate "Relayfs file system support"
+       ---help---
+         Relayfs is a high-speed data relay filesystem designed to provide
+         an efficient mechanism for tools and facilities to relay large
+         amounts of data from kernel space to user space.  It's not useful
+         on its own, and should only be enabled if other facilities that
+         need it are enabled, such as for example klog or the Linux Trace
+         Toolkit.
+
+         See <file:Documentation/filesystems/relayfs.txt> for further
+         information.
+
+         This file system is also available as a module ( = code which can be
+         inserted in and removed from the running kernel whenever you want).
+         The module is called relayfs.  If you want to compile it as a
+         module, say M here and read <file:Documentation/modules.txt>.
+
+         If unsure, say N.
+
+config KLOG_CHANNEL
+       bool "Enable klog debugging support"
+       depends on RELAYFS_FS
+       help
+         If you say Y to this, a relayfs channel named klog will be created
+         in the root of the relayfs file system.  You can write to the klog
+         channel using klog() or klog_raw() from within the kernel or
+         kernel modules, and read from the klog channel by mounting relayfs
+         and using read(2) to read from it (or using cat).  If you're not  
+         sure, say N.
+
+config KLOG_CHANNEL_AUTOENABLE
+       bool "Enable klog logging on startup"
+       depends on KLOG_CHANNEL
+       default y
+       help
+         If you say Y to this, the klog channel will be automatically enabled
+         on startup.  Otherwise, to turn klog logging on, you need use
+         sysctl (fs.relayfs.klog_enabled).  This option is used in cases where
+         you don't actually want the channel to be written to until it's
+         enabled.  If you're not sure, say Y.
+
+config KLOG_CHANNEL_SHIFT
+       depends on KLOG_CHANNEL
+       int "klog debugging channel size (14 => 16KB, 22 => 4MB)"
+       range 14 22
+       default 21
+       help
+         Select klog debugging channel size as a power of 2.
+
 endmenu
 
 menu "Miscellaneous filesystems"
@@ -1176,8 +1226,6 @@ config HPFS_FS
          To compile this file system support as a module, choose M here: the
          module will be called hpfs.  If unsure, say N.
 
-
-
 config QNX4FS_FS
        tristate "QNX4 file system support (read only)"
        help
@@ -1203,8 +1251,6 @@ config QNX4FS_RW
          It's currently broken, so for now:
          answer N.
 
-
-
 config SYSV_FS
        tristate "System V/Xenix/V7/Coherent file system support"
        help
@@ -1241,8 +1287,6 @@ config SYSV_FS
 
          If you haven't heard about all of this before, it's safe to say N.
 
-
-
 config UFS_FS
        tristate "UFS file system support (read only)"
        help