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authorThomas Petazzoni <thomas.petazzoni@free-electrons.com>2008-10-16 01:05:12 -0400
committerLinus Torvalds <torvalds@linux-foundation.org>2008-10-16 14:21:51 -0400
commitebf3f09c634906d371f2bfd71b41c7e0c52efe7e (patch)
tree4205040f47fba2675dc4c6b1407d15c9d6f8b355 /kernel/sys_ni.c
parentd8273674721faaf84bec2190c0c7a82972b37f73 (diff)
Configure out AIO support
This patchs adds the CONFIG_AIO option which allows to remove support for asynchronous I/O operations, that are not necessarly used by applications, particularly on embedded devices. As this is a size-reduction option, it depends on CONFIG_EMBEDDED. It allows to save ~7 kilobytes of kernel code/data: text data bss dec hex filename 1115067 119180 217088 1451335 162547 vmlinux 1108025 119048 217088 1444161 160941 vmlinux.new -7042 -132 0 -7174 -1C06 +/- This patch has been originally written by Matt Mackall <mpm@selenic.com>, and is part of the Linux Tiny project. [randy.dunlap@oracle.com: build fix] Signed-off-by: Thomas Petazzoni <thomas.petazzoni@free-electrons.com> Cc: Benjamin LaHaise <bcrl@kvack.org> Cc: Zach Brown <zach.brown@oracle.com> Signed-off-by: Matt Mackall <mpm@selenic.com> Signed-off-by: Randy Dunlap <randy.dunlap@oracle.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'kernel/sys_ni.c')
-rw-r--r--kernel/sys_ni.c5
1 files changed, 5 insertions, 0 deletions
diff --git a/kernel/sys_ni.c b/kernel/sys_ni.c
index 503d8d4eb80a..a77b27b11b04 100644
--- a/kernel/sys_ni.c
+++ b/kernel/sys_ni.c
@@ -126,6 +126,11 @@ cond_syscall(sys_vm86);
126cond_syscall(compat_sys_ipc); 126cond_syscall(compat_sys_ipc);
127cond_syscall(compat_sys_sysctl); 127cond_syscall(compat_sys_sysctl);
128cond_syscall(sys_flock); 128cond_syscall(sys_flock);
129cond_syscall(sys_io_setup);
130cond_syscall(sys_io_destroy);
131cond_syscall(sys_io_submit);
132cond_syscall(sys_io_cancel);
133cond_syscall(sys_io_getevents);
129 134
130/* arch-specific weak syscall entries */ 135/* arch-specific weak syscall entries */
131cond_syscall(sys_pciconfig_read); 136cond_syscall(sys_pciconfig_read);