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-rw-r--r--init/Kconfig63
-rw-r--r--init/do_mounts_md.c2
-rw-r--r--init/do_mounts_rd.c2
-rw-r--r--init/initramfs.c20
-rw-r--r--init/main.c31
5 files changed, 79 insertions, 39 deletions
diff --git a/init/Kconfig b/init/Kconfig
index da071c4bbfb..4c33316743f 100644
--- a/init/Kconfig
+++ b/init/Kconfig
@@ -259,17 +259,14 @@ config IKCONFIG_PROC
config LOG_BUF_SHIFT
int "Kernel log buffer size (16 => 64KB, 17 => 128KB)"
range 12 21
- default 17 if S390 || LOCKDEP
- default 16 if X86_NUMAQ || IA64
- default 15 if SMP
- default 14
+ default 17
help
Select kernel log buffer size as a power of 2.
- Defaults and Examples:
- 17 => 128 KB for S/390
- 16 => 64 KB for x86 NUMAQ or IA-64
- 15 => 32 KB for SMP
- 14 => 16 KB for uniprocessor
+ Examples:
+ 17 => 128 KB
+ 16 => 64 KB
+ 15 => 32 KB
+ 14 => 16 KB
13 => 8 KB
12 => 4 KB
@@ -284,6 +281,7 @@ config CGROUPS
config CGROUP_DEBUG
bool "Example debug cgroup subsystem"
depends on CGROUPS
+ default n
help
This option enables a simple cgroup subsystem that
exports useful debugging information about the cgroups
@@ -300,6 +298,13 @@ config CGROUP_NS
for instance virtual servers and checkpoint/restart
jobs.
+config CGROUP_DEVICE
+ bool "Device controller for cgroups"
+ depends on CGROUPS && EXPERIMENTAL
+ help
+ Provides a cgroup implementing whitelists for devices which
+ a process in the cgroup can mknod or open.
+
config CPUSETS
bool "Cpuset support"
depends on SMP && CGROUPS
@@ -311,9 +316,16 @@ config CPUSETS
Say N if unsure.
+#
+# Architectures with an unreliable sched_clock() should select this:
+#
+config HAVE_UNSTABLE_SCHED_CLOCK
+ bool
+
config GROUP_SCHED
bool "Group CPU scheduler"
- default y
+ depends on EXPERIMENTAL
+ default n
help
This feature lets CPU scheduler recognize task groups and control CPU
bandwidth allocation to such task groups.
@@ -321,7 +333,7 @@ config GROUP_SCHED
config FAIR_GROUP_SCHED
bool "Group scheduling for SCHED_OTHER"
depends on GROUP_SCHED
- default y
+ default GROUP_SCHED
config RT_GROUP_SCHED
bool "Group scheduling for SCHED_RR/FIFO"
@@ -373,9 +385,13 @@ config RESOURCE_COUNTERS
infrastructure that works with cgroups
depends on CGROUPS
+config MM_OWNER
+ bool
+
config CGROUP_MEM_RES_CTLR
bool "Memory Resource Controller for Control Groups"
depends on CGROUPS && RESOURCE_COUNTERS
+ select MM_OWNER
help
Provides a memory resource controller that manages both page cache and
RSS memory.
@@ -388,6 +404,9 @@ config CGROUP_MEM_RES_CTLR
Only enable when you're ok with these trade offs and really
sure you need the memory resource controller.
+ This config option also selects MM_OWNER config option, which
+ could in turn add some fork/exit overhead.
+
config SYSFS_DEPRECATED
bool
@@ -538,6 +557,17 @@ 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
@@ -697,7 +727,7 @@ config VM_EVENT_COUNTERS
config SLUB_DEBUG
default y
bool "Enable SLUB debugging support" if EMBEDDED
- depends on SLUB
+ depends on SLUB && SYSFS
help
SLUB has extensive debug support features. Disabling these can
result in significant savings in code size. This also disables
@@ -802,6 +832,15 @@ menuconfig MODULES
If unsure, say Y.
+config MODULE_FORCE_LOAD
+ bool "Forced module loading"
+ depends on MODULES
+ default n
+ help
+ This option allows loading of modules even if that would set the
+ 'F' (forced) taint, due to lack of version info. Which is
+ usually a really bad idea.
+
config MODULE_UNLOAD
bool "Module unloading"
depends on MODULES
diff --git a/init/do_mounts_md.c b/init/do_mounts_md.c
index 753dc54a664..7473b0c59d4 100644
--- a/init/do_mounts_md.c
+++ b/init/do_mounts_md.c
@@ -133,7 +133,7 @@ static void __init md_setup_drive(void)
else
dev = MKDEV(MD_MAJOR, minor);
create_dev(name, dev);
- for (i = 0; i < MD_SB_DISKS && devname != 0; i++) {
+ for (i = 0; i < MD_SB_DISKS && devname != NULL; i++) {
char *p;
char comp_name[64];
u32 rdev;
diff --git a/init/do_mounts_rd.c b/init/do_mounts_rd.c
index 3ac5904d1b1..46dfd64ae8f 100644
--- a/init/do_mounts_rd.c
+++ b/init/do_mounts_rd.c
@@ -212,7 +212,7 @@ int __init rd_load_image(char *from)
}
buf = kmalloc(BLOCK_SIZE, GFP_KERNEL);
- if (buf == 0) {
+ if (!buf) {
printk(KERN_ERR "RAMDISK: could not allocate buffer\n");
goto done;
}
diff --git a/init/initramfs.c b/init/initramfs.c
index d53fee8d860..8eeeccb328c 100644
--- a/init/initramfs.c
+++ b/init/initramfs.c
@@ -57,7 +57,7 @@ static char __init *find_link(int major, int minor, int ino,
continue;
return (*p)->name;
}
- q = (struct hash *)malloc(sizeof(struct hash));
+ q = kmalloc(sizeof(struct hash), GFP_KERNEL);
if (!q)
panic("can't allocate link hash entry");
q->major = major;
@@ -77,7 +77,7 @@ static void __init free_hash(void)
while (*p) {
q = *p;
*p = q->next;
- free(q);
+ kfree(q);
}
}
}
@@ -445,10 +445,10 @@ static char * __init unpack_to_rootfs(char *buf, unsigned len, int check_only)
{
int written;
dry_run = check_only;
- header_buf = malloc(110);
- symlink_buf = malloc(PATH_MAX + N_ALIGN(PATH_MAX) + 1);
- name_buf = malloc(N_ALIGN(PATH_MAX));
- window = malloc(WSIZE);
+ header_buf = kmalloc(110, GFP_KERNEL);
+ symlink_buf = kmalloc(PATH_MAX + N_ALIGN(PATH_MAX) + 1, GFP_KERNEL);
+ name_buf = kmalloc(N_ALIGN(PATH_MAX), GFP_KERNEL);
+ window = kmalloc(WSIZE, GFP_KERNEL);
if (!window || !header_buf || !symlink_buf || !name_buf)
panic("can't allocate buffers");
state = Start;
@@ -484,10 +484,10 @@ static char * __init unpack_to_rootfs(char *buf, unsigned len, int check_only)
buf += inptr;
len -= inptr;
}
- free(window);
- free(name_buf);
- free(symlink_buf);
- free(header_buf);
+ kfree(window);
+ kfree(name_buf);
+ kfree(symlink_buf);
+ kfree(header_buf);
return message;
}
diff --git a/init/main.c b/init/main.c
index 1687b0167c4..ddada7acf36 100644
--- a/init/main.c
+++ b/init/main.c
@@ -52,12 +52,14 @@
#include <linux/unwind.h>
#include <linux/buffer_head.h>
#include <linux/debug_locks.h>
+#include <linux/debugobjects.h>
#include <linux/lockdep.h>
#include <linux/pid_namespace.h>
#include <linux/device.h>
#include <linux/kthread.h>
#include <linux/sched.h>
#include <linux/signal.h>
+#include <linux/idr.h>
#include <asm/io.h>
#include <asm/bugs.h>
@@ -458,7 +460,7 @@ static void noinline __init_refok rest_init(void)
kernel_thread(kernel_init, NULL, CLONE_FS | CLONE_SIGHAND);
numa_default_policy();
pid = kernel_thread(kthreadd, NULL, CLONE_FS | CLONE_FILES);
- kthreadd_task = find_task_by_pid(pid);
+ kthreadd_task = find_task_by_pid_ns(pid, &init_pid_ns);
unlock_kernel();
/*
@@ -542,6 +544,7 @@ asmlinkage void __init start_kernel(void)
*/
unwind_init();
lockdep_init();
+ debug_objects_early_init();
cgroup_init_early();
local_irq_disable();
@@ -559,6 +562,7 @@ asmlinkage void __init start_kernel(void)
printk(KERN_NOTICE);
printk(linux_banner);
setup_arch(&command_line);
+ mm_init_owner(&init_mm, &init_task);
setup_command_line(command_line);
unwind_setup();
setup_per_cpu_areas();
@@ -598,6 +602,7 @@ asmlinkage void __init start_kernel(void)
softirq_init();
timekeeping_init();
time_init();
+ sched_clock_init();
profile_init();
if (!irqs_disabled())
printk("start_kernel(): bug: interrupts were enabled early\n");
@@ -636,6 +641,8 @@ asmlinkage void __init start_kernel(void)
enable_debug_pagealloc();
cpu_hotplug_init();
kmem_cache_init();
+ debug_objects_mem_init();
+ idr_init_cache();
setup_per_cpu_pageset();
numa_policy_init();
if (late_time_init)
@@ -700,10 +707,8 @@ static void __init do_initcalls(void)
int result;
if (initcall_debug) {
- printk("Calling initcall 0x%p", *call);
- print_fn_descriptor_symbol(": %s()",
+ print_fn_descriptor_symbol("calling %s()\n",
(unsigned long) *call);
- printk("\n");
t0 = ktime_get();
}
@@ -713,15 +718,10 @@ static void __init do_initcalls(void)
t1 = ktime_get();
delta = ktime_sub(t1, t0);
- printk("initcall 0x%p", *call);
- print_fn_descriptor_symbol(": %s()",
+ print_fn_descriptor_symbol("initcall %s()",
(unsigned long) *call);
- printk(" returned %d.\n", result);
-
- printk("initcall 0x%p ran for %Ld msecs: ",
- *call, (unsigned long long)delta.tv64 >> 20);
- print_fn_descriptor_symbol("%s()\n",
- (unsigned long) *call);
+ printk(" returned %d after %Ld msecs\n", result,
+ (unsigned long long) delta.tv64 >> 20);
}
if (result && result != -ENODEV && initcall_debug) {
@@ -737,10 +737,9 @@ static void __init do_initcalls(void)
local_irq_enable();
}
if (msg) {
- printk(KERN_WARNING "initcall at 0x%p", *call);
- print_fn_descriptor_symbol(": %s()",
+ print_fn_descriptor_symbol(KERN_WARNING "initcall %s()",
(unsigned long) *call);
- printk(": returned with %s\n", msg);
+ printk(" returned with %s\n", msg);
}
}
@@ -807,6 +806,8 @@ static int noinline init_post(void)
(void) sys_dup(0);
(void) sys_dup(0);
+ current->signal->flags |= SIGNAL_UNKILLABLE;
+
if (ramdisk_execute_command) {
run_init_process(ramdisk_execute_command);
printk(KERN_WARNING "Failed to execute %s\n",
generated by cgit v1.2.3 (git 2.25.1) at 2024-11-23 22:23:54 +0000