diff options
Diffstat (limited to 'init')
| -rw-r--r-- | init/Kconfig | 75 | ||||
| -rw-r--r-- | init/initramfs.c | 8 | ||||
| -rw-r--r-- | init/main.c | 9 |
3 files changed, 28 insertions, 64 deletions
diff --git a/init/Kconfig b/init/Kconfig index f698a5af500..a97924bc5b8 100644 --- a/init/Kconfig +++ b/init/Kconfig @@ -366,10 +366,29 @@ config RESOURCE_COUNTERS infrastructure that works with cgroups depends on CGROUPS +config CGROUP_MEM_RES_CTLR + bool "Memory Resource Controller for Control Groups" + depends on CGROUPS && RESOURCE_COUNTERS + help + Provides a memory resource controller that manages both page cache and + RSS memory. + + Note that setting this option increases fixed memory overhead + associated with each page of memory in the system by 4/8 bytes + and also increases cache misses because struct page on many 64bit + systems will not fit into a single cache line anymore. + + Only enable when you're ok with these trade offs and really + sure you need the memory resource controller. + config SYSFS_DEPRECATED + bool + +config SYSFS_DEPRECATED_V2 bool "Create deprecated sysfs files" depends on SYSFS default y + select SYSFS_DEPRECATED help This option creates deprecated symlinks such as the "device"-link, the <subsystem>:<name>-link, and the @@ -382,25 +401,11 @@ config SYSFS_DEPRECATED If enabled, this option will also move any device structures that belong to a class, back into the /sys/class hierarchy, in - order to support older versions of udev. - - If you are using a distro that was released in 2006 or later, - it should be safe to say N here. - -config CGROUP_MEM_CONT - bool "Memory controller for cgroups" - depends on CGROUPS && RESOURCE_COUNTERS - help - Provides a memory controller that manages both page cache and - RSS memory. + order to support older versions of udev and some userspace + programs. - Note that setting this option increases fixed memory overhead - associated with each page of memory in the system by 4/8 bytes - and also increases cache misses because struct page on many 64bit - systems will not fit into a single cache line anymore. - - Only enable when you're ok with these trade offs and really - sure you need the memory controller. + If you are using a distro with the most recent userspace + packages, it should be safe to say N here. config PROC_PID_CPUSET bool "Include legacy /proc/<pid>/cpuset file" @@ -860,38 +865,10 @@ source "block/Kconfig" config PREEMPT_NOTIFIERS bool -choice - prompt "RCU implementation type:" - default CLASSIC_RCU - help - This allows you to choose either the classic RCU implementation - that is designed for best read-side performance on non-realtime - systems, or the preemptible RCU implementation for best latency - on realtime systems. Note that some kernel preemption modes - will restrict your choice. - - Select the default if you are unsure. - config CLASSIC_RCU - bool "Classic RCU" + def_bool !PREEMPT_RCU help This option selects the classic RCU implementation that is designed for best read-side performance on non-realtime - systems. - - Say Y if you are unsure. - -config PREEMPT_RCU - bool "Preemptible RCU" - depends on PREEMPT - help - This option reduces the latency of the kernel by making certain - RCU sections preemptible. Normally RCU code is non-preemptible, if - this option is selected then read-only RCU sections become - preemptible. This helps latency, but may expose bugs due to - now-naive assumptions about each RCU read-side critical section - remaining on a given CPU through its execution. - - Say N if you are unsure. - -endchoice + systems. Classic RCU is the default. Note that the + PREEMPT_RCU symbol is used to select/deselect this option. diff --git a/init/initramfs.c b/init/initramfs.c index c0b1e0533d8..d53fee8d860 100644 --- a/init/initramfs.c +++ b/init/initramfs.c @@ -538,7 +538,7 @@ skip: initrd_end = 0; } -int __init populate_rootfs(void) +static int __init populate_rootfs(void) { char *err = unpack_to_rootfs(__initramfs_start, __initramfs_end - __initramfs_start, 0); @@ -577,10 +577,4 @@ int __init populate_rootfs(void) } return 0; } -#ifndef CONFIG_ACPI_CUSTOM_DSDT_INITRD -/* - * if this option is enabled, populate_rootfs() is called _earlier_ in the - * boot sequence. This insures that the ACPI initialisation can find the file. - */ rootfs_initcall(populate_rootfs); -#endif diff --git a/init/main.c b/init/main.c index 8b1982082ad..99ce94930b0 100644 --- a/init/main.c +++ b/init/main.c @@ -102,12 +102,6 @@ static inline void mark_rodata_ro(void) { } extern void tc_init(void); #endif -#ifdef CONFIG_ACPI_CUSTOM_DSDT_INITRD -extern int populate_rootfs(void); -#else -static inline void populate_rootfs(void) {} -#endif - enum system_states system_state; EXPORT_SYMBOL(system_state); @@ -254,7 +248,7 @@ early_param("quiet", quiet_kernel); static int __init loglevel(char *str) { get_option(&str, &console_loglevel); - return 1; + return 0; } early_param("loglevel", loglevel); @@ -650,7 +644,6 @@ asmlinkage void __init start_kernel(void) check_bugs(); - populate_rootfs(); /* For DSDT override from initramfs */ acpi_early_init(); /* before LAPIC and SMP init */ /* Do the rest non-__init'ed, we're now alive */ |