diff options
Diffstat (limited to 'init')
| -rw-r--r-- | init/Kconfig | 301 | ||||
| -rw-r--r-- | init/do_mounts.c | 7 | ||||
| -rw-r--r-- | init/main.c | 7 |
3 files changed, 157 insertions, 158 deletions
diff --git a/init/Kconfig b/init/Kconfig index af6c7f8ba019..89e4cf672dfe 100644 --- a/init/Kconfig +++ b/init/Kconfig @@ -267,6 +267,106 @@ config POSIX_MQUEUE_SYSCTL depends on SYSCTL default y +config FHANDLE + bool "open by fhandle syscalls" + select EXPORTFS + help + If you say Y here, a user level program will be able to map + file names to handle and then later use the handle for + different file system operations. This is useful in implementing + userspace file servers, which now track files using handles instead + of names. The handle would remain the same even if file names + get renamed. Enables open_by_handle_at(2) and name_to_handle_at(2) + syscalls. + +config AUDIT + bool "Auditing support" + depends on NET + help + Enable auditing infrastructure that can be used with another + kernel subsystem, such as SELinux (which requires this for + logging of avc messages output). Does not do system-call + auditing without CONFIG_AUDITSYSCALL. + +config AUDITSYSCALL + bool "Enable system-call auditing support" + depends on AUDIT && (X86 || PPC || S390 || IA64 || UML || SPARC64 || SUPERH || (ARM && AEABI && !OABI_COMPAT)) + default y if SECURITY_SELINUX + help + Enable low-overhead system-call auditing infrastructure that + can be used independently or with another kernel subsystem, + such as SELinux. + +config AUDIT_WATCH + def_bool y + depends on AUDITSYSCALL + select FSNOTIFY + +config AUDIT_TREE + def_bool y + depends on AUDITSYSCALL + select FSNOTIFY + +config AUDIT_LOGINUID_IMMUTABLE + bool "Make audit loginuid immutable" + depends on AUDIT + help + The config option toggles if a task setting its loginuid requires + CAP_SYS_AUDITCONTROL or if that task should require no special permissions + but should instead only allow setting its loginuid if it was never + previously set. On systems which use systemd or a similar central + process to restart login services this should be set to true. On older + systems in which an admin would typically have to directly stop and + start processes this should be set to false. Setting this to true allows + one to drop potentially dangerous capabilites from the login tasks, + but may not be backwards compatible with older init systems. + +source "kernel/irq/Kconfig" +source "kernel/time/Kconfig" + +menu "CPU/Task time and stats accounting" + +choice + prompt "Cputime accounting" + default TICK_CPU_ACCOUNTING if !PPC64 + default VIRT_CPU_ACCOUNTING if PPC64 + +# Kind of a stub config for the pure tick based cputime accounting +config TICK_CPU_ACCOUNTING + bool "Simple tick based cputime accounting" + depends on !S390 + help + This is the basic tick based cputime accounting that maintains + statistics about user, system and idle time spent on per jiffies + granularity. + + If unsure, say Y. + +config VIRT_CPU_ACCOUNTING + bool "Deterministic task and CPU time accounting" + depends on HAVE_VIRT_CPU_ACCOUNTING + help + Select this option to enable more accurate task and CPU time + accounting. This is done by reading a CPU counter on each + kernel entry and exit and on transitions within the kernel + between system, softirq and hardirq state, so there is a + small performance impact. In the case of s390 or IBM POWER > 5, + this also enables accounting of stolen time on logically-partitioned + systems. + +config IRQ_TIME_ACCOUNTING + bool "Fine granularity task level IRQ time accounting" + depends on HAVE_IRQ_TIME_ACCOUNTING + help + Select this option to enable fine granularity task irq time + accounting. This is done by reading a timestamp on each + transitions between softirq and hardirq state, so there can be a + small performance impact. + + If in doubt, say N here. + +endchoice + config BSD_PROCESS_ACCT bool "BSD Process Accounting" help @@ -292,18 +392,6 @@ config BSD_PROCESS_ACCT_V3 for processing it. A preliminary version of these tools is available at <http://www.gnu.org/software/acct/>. -config FHANDLE - bool "open by fhandle syscalls" - select EXPORTFS - help - If you say Y here, a user level program will be able to map - file names to handle and then later use the handle for - different file system operations. This is useful in implementing - userspace file servers, which now track files using handles instead - of names. The handle would remain the same even if file names - get renamed. Enables open_by_handle_at(2) and name_to_handle_at(2) - syscalls. - config TASKSTATS bool "Export task/process statistics through netlink (EXPERIMENTAL)" depends on NET @@ -346,50 +434,7 @@ config TASK_IO_ACCOUNTING Say N if unsure. -config AUDIT - bool "Auditing support" - depends on NET - help - Enable auditing infrastructure that can be used with another - kernel subsystem, such as SELinux (which requires this for - logging of avc messages output). Does not do system-call - auditing without CONFIG_AUDITSYSCALL. - -config AUDITSYSCALL - bool "Enable system-call auditing support" - depends on AUDIT && (X86 || PPC || S390 || IA64 || UML || SPARC64 || SUPERH || (ARM && AEABI && !OABI_COMPAT)) - default y if SECURITY_SELINUX - help - Enable low-overhead system-call auditing infrastructure that - can be used independently or with another kernel subsystem, - such as SELinux. - -config AUDIT_WATCH - def_bool y - depends on AUDITSYSCALL - select FSNOTIFY - -config AUDIT_TREE - def_bool y - depends on AUDITSYSCALL - select FSNOTIFY - -config AUDIT_LOGINUID_IMMUTABLE - bool "Make audit loginuid immutable" - depends on AUDIT - help - The config option toggles if a task setting its loginuid requires - CAP_SYS_AUDITCONTROL or if that task should require no special permissions - but should instead only allow setting its loginuid if it was never - previously set. On systems which use systemd or a similar central - process to restart login services this should be set to true. On older - systems in which an admin would typically have to directly stop and - start processes this should be set to false. Setting this to true allows - one to drop potentially dangerous capabilites from the login tasks, - but may not be backwards compatible with older init systems. - -source "kernel/irq/Kconfig" -source "kernel/time/Kconfig" +endmenu # "CPU/Task time and stats accounting" menu "RCU Subsystem" @@ -441,6 +486,36 @@ config PREEMPT_RCU This option enables preemptible-RCU code that is common between the TREE_PREEMPT_RCU and TINY_PREEMPT_RCU implementations. +config RCU_USER_QS + bool "Consider userspace as in RCU extended quiescent state" + depends on HAVE_RCU_USER_QS && SMP + help + This option sets hooks on kernel / userspace boundaries and + puts RCU in extended quiescent state when the CPU runs in + userspace. It means that when a CPU runs in userspace, it is + excluded from the global RCU state machine and thus doesn't + to keep the timer tick on for RCU. + + Unless you want to hack and help the development of the full + tickless feature, you shouldn't enable this option. It adds + unnecessary overhead. + + If unsure say N + +config RCU_USER_QS_FORCE + bool "Force userspace extended QS by default" + depends on RCU_USER_QS + help + Set the hooks in user/kernel boundaries by default in order to + test this feature that treats userspace as an extended quiescent + state until we have a real user like a full adaptive nohz option. + + Unless you want to hack and help the development of the full + tickless feature, you shouldn't enable this option. It adds + unnecessary overhead. + + If unsure say N + config RCU_FANOUT int "Tree-based hierarchical RCU fanout value" range 2 64 if 64BIT @@ -923,113 +998,24 @@ config UIDGID_CONVERTED bool default y - # List of kernel pieces that need user namespace work - # Features - depends on SYSVIPC = n - depends on IMA = n - depends on EVM = n - depends on KEYS = n - depends on AUDIT = n - depends on AUDITSYSCALL = n - depends on TASKSTATS = n - depends on TRACING = n - depends on FS_POSIX_ACL = n - depends on QUOTA = n - depends on QUOTACTL = n - depends on DEBUG_CREDENTIALS = n - depends on BSD_PROCESS_ACCT = n - depends on DRM = n - depends on PROC_EVENTS = n - # Networking - depends on NET = n depends on NET_9P = n - depends on IPX = n - depends on PHONET = n - depends on NET_CLS_FLOW = n - depends on NETFILTER_XT_MATCH_OWNER = n - depends on NETFILTER_XT_MATCH_RECENT = n - depends on NETFILTER_XT_TARGET_LOG = n - depends on NETFILTER_NETLINK_LOG = n - depends on INET = n - depends on IPV6 = n - depends on IP_SCTP = n - depends on AF_RXRPC = n - depends on LLC2 = n - depends on NET_KEY = n - depends on INET_DIAG = n - depends on DNS_RESOLVER = n - depends on AX25 = n - depends on ATALK = n # Filesystems - depends on USB_DEVICEFS = n - depends on USB_GADGETFS = n - depends on USB_FUNCTIONFS = n - depends on DEVTMPFS = n - depends on XENFS = n - depends on 9P_FS = n - depends on ADFS_FS = n - depends on AFFS_FS = n depends on AFS_FS = n depends on AUTOFS4_FS = n - depends on BEFS_FS = n - depends on BFS_FS = n - depends on BTRFS_FS = n depends on CEPH_FS = n depends on CIFS = n depends on CODA_FS = n - depends on CONFIGFS_FS = n - depends on CRAMFS = n - depends on DEBUG_FS = n - depends on ECRYPT_FS = n - depends on EFS_FS = n - depends on EXOFS_FS = n - depends on FAT_FS = n depends on FUSE_FS = n depends on GFS2_FS = n - depends on HFS_FS = n - depends on HFSPLUS_FS = n - depends on HPFS_FS = n - depends on HUGETLBFS = n - depends on ISO9660_FS = n - depends on JFFS2_FS = n - depends on JFS_FS = n - depends on LOGFS = n - depends on MINIX_FS = n depends on NCP_FS = n depends on NFSD = n depends on NFS_FS = n - depends on NILFS2_FS = n - depends on NTFS_FS = n depends on OCFS2_FS = n - depends on OMFS_FS = n - depends on QNX4FS_FS = n - depends on QNX6FS_FS = n - depends on REISERFS_FS = n - depends on SQUASHFS = n - depends on SYSV_FS = n - depends on UBIFS_FS = n - depends on UDF_FS = n - depends on UFS_FS = n - depends on VXFS_FS = n depends on XFS_FS = n - depends on !UML || HOSTFS = n - - # The rare drivers that won't build - depends on AIRO = n - depends on AIRO_CS = n - depends on TUN = n - depends on INFINIBAND_QIB = n - depends on BLK_DEV_LOOP = n - depends on ANDROID_BINDER_IPC = n - - # Security modules - depends on SECURITY_TOMOYO = n - depends on SECURITY_APPARMOR = n - config UIDGID_STRICT_TYPE_CHECKS bool "Require conversions between uid/gids and their internal representation" depends on UIDGID_CONVERTED @@ -1151,9 +1137,12 @@ menuconfig EXPERT environments which can tolerate a "non-standard" kernel. Only use this if you really know what you are doing. +config HAVE_UID16 + bool + config UID16 bool "Enable 16-bit UID system calls" if EXPERT - depends on ARM || BLACKFIN || CRIS || FRV || H8300 || X86_32 || M68K || (S390 && !64BIT) || SUPERH || SPARC32 || (SPARC64 && COMPAT) || UML || (X86_64 && IA32_EMULATION) + depends on HAVE_UID16 default y help This enables the legacy 16-bit UID syscall wrappers. @@ -1175,6 +1164,11 @@ config SYSCTL_SYSCALL If unsure say N here. +config SYSCTL_EXCEPTION_TRACE + bool + help + Enable support for /proc/sys/debug/exception-trace. + config KALLSYMS bool "Load all symbols for debugging/ksymoops" if EXPERT default y @@ -1201,13 +1195,7 @@ config KALLSYMS_ALL Say N unless you really need all symbols. config HOTPLUG - bool "Support for hot-pluggable devices" if EXPERT - default y - help - This option is provided for the case where no hotplug or uevent - capabilities is wanted by the kernel. You should only consider - disabling this option for embedded systems that do not use modules, a - dynamic /dev tree, or dynamic device discovery. Just say Y. + def_bool y config PRINTK default y @@ -1230,6 +1218,7 @@ config BUG Just say Y. config ELF_CORE + depends on COREDUMP default y bool "Enable ELF core dumps" if EXPERT help @@ -1612,4 +1601,10 @@ config PADATA depends on SMP bool +# Can be selected by architectures with broken toolchains +# that get confused by correct const<->read_only section +# mappings +config BROKEN_RODATA + bool + source "kernel/Kconfig.locks" diff --git a/init/do_mounts.c b/init/do_mounts.c index d3f0aeed2d39..f8a66424360d 100644 --- a/init/do_mounts.c +++ b/init/do_mounts.c @@ -353,8 +353,9 @@ static int __init do_mount_root(char *name, char *fs, int flags, void *data) void __init mount_block_root(char *name, int flags) { - char *fs_names = __getname_gfp(GFP_KERNEL - | __GFP_NOTRACK_FALSE_POSITIVE); + struct page *page = alloc_page(GFP_KERNEL | + __GFP_NOTRACK_FALSE_POSITIVE); + char *fs_names = page_address(page); char *p; #ifdef CONFIG_BLOCK char b[BDEVNAME_SIZE]; @@ -406,7 +407,7 @@ retry: #endif panic("VFS: Unable to mount root fs on %s", b); out: - putname(fs_names); + put_page(page); } #ifdef CONFIG_ROOT_NFS diff --git a/init/main.c b/init/main.c index 02df2ddc5f83..9cf77ab138a6 100644 --- a/init/main.c +++ b/init/main.c @@ -87,7 +87,6 @@ extern void init_IRQ(void); extern void fork_init(unsigned long); extern void mca_init(void); extern void sbus_init(void); -extern void prio_tree_init(void); extern void radix_tree_init(void); #ifndef CONFIG_DEBUG_RODATA static inline void mark_rodata_ro(void) { } @@ -548,7 +547,6 @@ asmlinkage void __init start_kernel(void) /* init some links before init_ISA_irqs() */ early_irq_init(); init_IRQ(); - prio_tree_init(); init_timers(); hrtimers_init(); softirq_init(); @@ -632,6 +630,11 @@ asmlinkage void __init start_kernel(void) acpi_early_init(); /* before LAPIC and SMP init */ sfi_init_late(); + if (efi_enabled) { + efi_late_init(); + efi_free_boot_services(); + } + ftrace_init(); /* Do the rest non-__init'ed, we're now alive */ |
