Messages in this thread Patch in this message | | | From | Holger Schurig <> | Subject | [PATCH] sysctl: allow embedded targets to disable sysctl_check.c | Date | Thu, 7 Feb 2008 14:38:58 +0100 |
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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 <hs4233@mail.mn-solutions.de>
--- 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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