diff options
| author | Holger Schurig <hs4233@mail.mn-solutions.de> | 2008-04-29 10:02:36 +0200 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2008-04-29 17:06:22 +0200 |
| commit | 88f458e4b91348b2e892c72977b5f665d7f374da (patch) | |
| tree | 1ef9e98f74fc63193327053af079079e23aa8443 | |
| parent | drivers: use non-racy method for proc entries creation (2) (diff) | |
| download | linux-88f458e4b91348b2e892c72977b5f665d7f374da.tar.xz linux-88f458e4b91348b2e892c72977b5f665d7f374da.zip | |
sysctl: allow embedded targets to disable sysctl_check.c
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>
Cc: "Eric W. Biederman" <ebiederm@xmission.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
| -rw-r--r-- | init/Kconfig | 11 | ||||
| -rw-r--r-- | kernel/Makefile | 2 | ||||
| -rw-r--r-- | kernel/sysctl.c | 10 |
3 files changed, 20 insertions, 3 deletions
diff --git a/init/Kconfig b/init/Kconfig index 98fa96eac415..3e7b257fc05f 100644 --- a/init/Kconfig +++ b/init/Kconfig @@ -550,6 +550,17 @@ config SYSCTL_SYSCALL 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 diff --git a/kernel/Makefile b/kernel/Makefile index 6c5f081132a4..188c43223f52 100644 --- a/kernel/Makefile +++ b/kernel/Makefile @@ -11,7 +11,7 @@ obj-y = sched.o fork.o exec_domain.o panic.o printk.o profile.o \ hrtimer.o rwsem.o nsproxy.o srcu.o semaphore.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 diff --git a/kernel/sysctl.c b/kernel/sysctl.c index 0a1d2733cf41..1cdfe942d160 100644 --- a/kernel/sysctl.c +++ b/kernel/sysctl.c @@ -1592,9 +1592,13 @@ static void sysctl_set_parent(struct ctl_table *parent, struct ctl_table *table) 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; } @@ -1721,10 +1725,12 @@ struct ctl_table_header *__register_sysctl_paths( 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); |