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-rw-r--r--miscutils/readahead.c17
1 files changed, 17 insertions, 0 deletions
diff --git a/miscutils/readahead.c b/miscutils/readahead.c
index e22aaa4..0b502f8 100644
--- a/miscutils/readahead.c
+++ b/miscutils/readahead.c
@@ -9,6 +9,23 @@
*
* Licensed under GPLv2 or later, see file LICENSE in this source tree.
*/
+//config:config READAHEAD
+//config: bool "readahead"
+//config: default y
+//config: depends on LFS
+//config: select PLATFORM_LINUX
+//config: help
+//config: Preload the files listed on the command line into RAM cache so that
+//config: subsequent reads on these files will not block on disk I/O.
+//config:
+//config: This applet just calls the readahead(2) system call on each file.
+//config: It is mainly useful in system startup scripts to preload files
+//config: or executables before they are used. When used at the right time
+//config: (in particular when a CPU bound process is running) it can
+//config: significantly speed up system startup.
+//config:
+//config: As readahead(2) blocks until each file has been read, it is best to
+//config: run this applet as a background job.
//usage:#define readahead_trivial_usage
//usage: "[FILE]..."