Disable sysctl_check.c for embedded targets. This saves about about 11 kB
in .text and another 11 kB in .data on a PXA255 embedded platform.
Signed-off-by: Holger Schurig <[EMAIL PROTECTED]>
--- linux.orig/init/Kconfig
+++ linux/init/Kconfig
@@ -475,6 +475,17 @@
If unsure say Y here.
+config SYSCTL_SYSCALL_CHECK
+ bool "Sysctl checks" if EMBEDDED
+ depends on SYSCTL_SYSCALL
+ default y
+ ---help---
+ sys_sysctl uses binary paths that have been found challenging
+ to properly maintain and use. This enables checks that help
+ you to keep things correct.
+
+ If unsure say Y here.
+
config KALLSYMS
bool "Load all symbols for debugging/ksymoops" if EMBEDDED
default y
--- linux.orig/kernel/Makefile
+++ linux/kernel/Makefile
@@ -11,7 +11,7 @@
hrtimer.o rwsem.o nsproxy.o srcu.o \
utsname.o notifier.o ksysfs.o pm_qos_params.o
-obj-$(CONFIG_SYSCTL) += sysctl_check.o
+obj-$(CONFIG_SYSCTL_SYSCALL_CHECK) += sysctl_check.o
obj-$(CONFIG_STACKTRACE) += stacktrace.o
obj-y += time/
obj-$(CONFIG_DEBUG_MUTEXES) += mutex-debug.o
--- linux.orig/kernel/sysctl.c
+++ linux/kernel/sysctl.c
@@ -1604,9 +1604,13 @@
static __init int sysctl_init(void)
{
- int err;
sysctl_set_parent(NULL, root_table);
- err = sysctl_check_table(current->nsproxy, root_table);
+#ifdef CONFIG_SYSCTL_SYSCALL_CHECK
+ {
+ int err;
+ err = sysctl_check_table(current->nsproxy, root_table);
+ }
+#endif
return 0;
}
@@ -1733,10 +1737,12 @@
header->unregistering = NULL;
header->root = root;
sysctl_set_parent(NULL, header->ctl_table);
+#ifdef CONFIG_SYSCTL_SYSCALL_CHECK
if (sysctl_check_table(namespaces, header->ctl_table)) {
kfree(header);
return NULL;
}
+#endif
spin_lock(&sysctl_lock);
header_list = lookup_header_list(root, namespaces);
list_add_tail(&header->ctl_entry, header_list);
--
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