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authorJosh Triplett <josh@joshtriplett.org>2014-08-17 19:41:09 -0500
committerJosh Triplett <josh@joshtriplett.org>2014-08-17 19:44:24 -0500
commitd3ac21cacc24790eb45d735769f35753f5b56ceb (patch)
tree7cef2d5f86c0704b50cc163197ca4f6342c45c61 /init/Kconfig
parent7d1311b93e58ed55f3a31cc8f94c4b8fe988a2b9 (diff)
downloadlinux-linaro-stable-d3ac21cacc24790eb45d735769f35753f5b56ceb.tar.gz
mm: Support compiling out madvise and fadvise
Many embedded systems will not need these syscalls, and omitting them saves space. Add a new EXPERT config option CONFIG_ADVISE_SYSCALLS (default y) to support compiling them out. bloat-o-meter: add/remove: 0/3 grow/shrink: 0/0 up/down: 0/-2250 (-2250) function old new delta sys_fadvise64 57 - -57 sys_fadvise64_64 691 - -691 sys_madvise 1502 - -1502 Signed-off-by: Josh Triplett <josh@joshtriplett.org>
Diffstat (limited to 'init/Kconfig')
-rw-r--r--init/Kconfig10
1 files changed, 10 insertions, 0 deletions
diff --git a/init/Kconfig b/init/Kconfig
index e84c6423a2e5..782a65bf76ea 100644
--- a/init/Kconfig
+++ b/init/Kconfig
@@ -1537,6 +1537,16 @@ config AIO
by some high performance threaded applications. Disabling
this option saves about 7k.
+config ADVISE_SYSCALLS
+ bool "Enable madvise/fadvise syscalls" if EXPERT
+ default y
+ help
+ This option enables the madvise and fadvise syscalls, used by
+ applications to advise the kernel about their future memory or file
+ usage, improving performance. If building an embedded system where no
+ applications use these syscalls, you can disable this option to save
+ space.
+
config PCI_QUIRKS
default y
bool "Enable PCI quirk workarounds" if EXPERT