diff options
Diffstat (limited to 'init')
| -rw-r--r-- | init/Kconfig | 32 | ||||
| -rw-r--r-- | init/Makefile | 5 | ||||
| -rw-r--r-- | init/do_mounts.c | 3 | ||||
| -rw-r--r-- | init/do_mounts_initrd.c | 1 | ||||
| -rw-r--r-- | init/init_task.c | 3 | ||||
| -rw-r--r-- | init/initramfs.c | 10 | ||||
| -rw-r--r-- | init/main.c | 37 |
7 files changed, 50 insertions, 41 deletions
diff --git a/init/Kconfig b/init/Kconfig index 459f44ef7c..febdea2afc 100644 --- a/init/Kconfig +++ b/init/Kconfig @@ -547,24 +547,24 @@ config HAVE_SCHED_AVG_IRQ depends on IRQ_TIME_ACCOUNTING || PARAVIRT_TIME_ACCOUNTING depends on SMP -config SCHED_THERMAL_PRESSURE +config SCHED_HW_PRESSURE bool default y if ARM && ARM_CPU_TOPOLOGY default y if ARM64 depends on SMP depends on CPU_FREQ_THERMAL help - Select this option to enable thermal pressure accounting in the - scheduler. Thermal pressure is the value conveyed to the scheduler + Select this option to enable HW pressure accounting in the + scheduler. HW pressure is the value conveyed to the scheduler that reflects the reduction in CPU compute capacity resulted from - thermal throttling. Thermal throttling occurs when the performance of - a CPU is capped due to high operating temperatures. + HW throttling. HW throttling occurs when the performance of + a CPU is capped due to high operating temperatures as an example. If selected, the scheduler will be able to balance tasks accordingly, i.e. put less load on throttled CPUs than on non/less throttled ones. This requires the architecture to implement - arch_update_thermal_pressure() and arch_scale_thermal_pressure(). + arch_update_hw_pressure() and arch_scale_thermal_pressure(). config BSD_PROCESS_ACCT bool "BSD Process Accounting" @@ -743,7 +743,7 @@ config LOG_CPU_MAX_BUF_SHIFT int "CPU kernel log buffer size contribution (13 => 8 KB, 17 => 128KB)" depends on SMP range 0 21 - default 0 if BASE_SMALL != 0 + default 0 if BASE_SMALL default 12 depends on PRINTK help @@ -883,7 +883,7 @@ config GCC10_NO_ARRAY_BOUNDS config CC_NO_ARRAY_BOUNDS bool - default y if CC_IS_GCC && GCC_VERSION >= 100000 && GCC10_NO_ARRAY_BOUNDS + default y if CC_IS_GCC && GCC_VERSION >= 90000 && GCC10_NO_ARRAY_BOUNDS # Currently, disable -Wstringop-overflow for GCC globally. config GCC_NO_STRINGOP_OVERFLOW @@ -929,6 +929,9 @@ config NUMA_BALANCING_DEFAULT_ENABLED If set, automatic NUMA balancing will be enabled if running on a NUMA machine. +config SLAB_OBJ_EXT + bool + menuconfig CGROUPS bool "Control Group support" select KERNFS @@ -962,6 +965,7 @@ config MEMCG bool "Memory controller" select PAGE_COUNTER select EVENTFD + select SLAB_OBJ_EXT help Provides control over the memory footprint of tasks in a cgroup. @@ -1585,11 +1589,10 @@ config PCSPKR_PLATFORM This option allows to disable the internal PC-Speaker support, saving some memory. -config BASE_FULL - default y - bool "Enable full-sized data structures for core" if EXPERT +config BASE_SMALL + bool "Enable smaller-sized data structures for core" if EXPERT help - Disabling this option reduces the size of miscellaneous core + Enabling this option reduces the size of miscellaneous core kernel data structures. This saves memory on small machines, but may reduce performance. @@ -1944,11 +1947,6 @@ config RT_MUTEXES bool default y if PREEMPT_RT -config BASE_SMALL - int - default 0 if BASE_FULL - default 1 if !BASE_FULL - config MODULE_SIG_FORMAT def_bool n select SYSTEM_DATA_VERIFICATION diff --git a/init/Makefile b/init/Makefile index cbac576c57..ab71cedc5f 100644 --- a/init/Makefile +++ b/init/Makefile @@ -52,13 +52,10 @@ CFLAGS_version.o := -include $(obj)/utsversion-tmp.h # Build version-timestamp.c with final UTS_VERSION # -include/generated/utsversion.h: build-version-auto = $(shell $(srctree)/$(src)/build-version) +include/generated/utsversion.h: build-version-auto = $(shell $(src)/build-version) include/generated/utsversion.h: build-timestamp-auto = $(shell LC_ALL=C date) include/generated/utsversion.h: FORCE $(call filechk,uts_version) $(obj)/version-timestamp.o: include/generated/utsversion.h CFLAGS_version-timestamp.o := -include include/generated/utsversion.h -KASAN_SANITIZE_version-timestamp.o := n -KCSAN_SANITIZE_version-timestamp.o := n -GCOV_PROFILE_version-timestamp.o := n diff --git a/init/do_mounts.c b/init/do_mounts.c index 3c5fd993bc..6af29da888 100644 --- a/init/do_mounts.c +++ b/init/do_mounts.c @@ -159,8 +159,7 @@ static int __init do_mount_root(const char *name, const char *fs, if (!p) return -ENOMEM; data_page = page_address(p); - /* zero-pad. init_mount() will make sure it's terminated */ - strncpy(data_page, data, PAGE_SIZE); + strscpy_pad(data_page, data, PAGE_SIZE); } ret = init_mount(name, "/root", fs, flags, data_page); diff --git a/init/do_mounts_initrd.c b/init/do_mounts_initrd.c index 425f4bcf4b..22c7f41ff6 100644 --- a/init/do_mounts_initrd.c +++ b/init/do_mounts_initrd.c @@ -29,7 +29,6 @@ static struct ctl_table kern_do_mounts_initrd_table[] = { .mode = 0644, .proc_handler = proc_dointvec, }, - { } }; static __init int kernel_do_mounts_initrd_sysctls_init(void) diff --git a/init/init_task.c b/init/init_task.c index 4daee6d761..eeb110c65f 100644 --- a/init/init_task.c +++ b/init/init_task.c @@ -77,6 +77,7 @@ struct task_struct init_task __aligned(L1_CACHE_BYTES) = { .cpus_ptr = &init_task.cpus_mask, .user_cpus_ptr = NULL, .cpus_mask = CPU_MASK_ALL, + .max_allowed_capacity = SCHED_CAPACITY_SCALE, .nr_cpus_allowed= NR_CPUS, .mm = NULL, .active_mm = &init_mm, @@ -198,7 +199,7 @@ struct task_struct init_task __aligned(L1_CACHE_BYTES) = { .trace_recursion = 0, #endif #ifdef CONFIG_LIVEPATCH - .patch_state = KLP_UNDEFINED, + .patch_state = KLP_TRANSITION_IDLE, #endif #ifdef CONFIG_SECURITY .security = NULL, diff --git a/init/initramfs.c b/init/initramfs.c index a298a3854a..814241b648 100644 --- a/init/initramfs.c +++ b/init/initramfs.c @@ -575,15 +575,7 @@ extern unsigned long __initramfs_size; #include <linux/initrd.h> #include <linux/kexec.h> -static ssize_t raw_read(struct file *file, struct kobject *kobj, - struct bin_attribute *attr, char *buf, - loff_t pos, size_t count) -{ - memcpy(buf, attr->private + pos, count); - return count; -} - -static BIN_ATTR(initrd, 0440, raw_read, NULL, 0); +static BIN_ATTR(initrd, 0440, sysfs_bin_attr_simple_read, NULL, 0); void __init reserve_initrd_mem(void) { diff --git a/init/main.c b/init/main.c index 5dcf5274c0..206acdde51 100644 --- a/init/main.c +++ b/init/main.c @@ -327,7 +327,7 @@ static int __init xbc_snprint_cmdline(char *buf, size_t size, { struct xbc_node *knode, *vnode; char *end = buf + size; - const char *val; + const char *val, *q; int ret; xbc_node_for_each_key_value(root, knode, val) { @@ -345,8 +345,14 @@ static int __init xbc_snprint_cmdline(char *buf, size_t size, continue; } xbc_array_for_each_value(vnode, val) { - ret = snprintf(buf, rest(buf, end), "%s=\"%s\" ", - xbc_namebuf, val); + /* + * For prettier and more readable /proc/cmdline, only + * quote the value when necessary, i.e. when it contains + * whitespace. + */ + q = strpbrk(val, " \t\r\n") ? "\"" : ""; + ret = snprintf(buf, rest(buf, end), "%s=%s%s%s ", + xbc_namebuf, q, val, q); if (ret < 0) return ret; buf += ret; @@ -627,14 +633,16 @@ static void __init setup_command_line(char *command_line) if (extra_command_line) xlen = strlen(extra_command_line); - if (extra_init_args) + if (extra_init_args) { + extra_init_args = strim(extra_init_args); /* remove trailing space */ ilen = strlen(extra_init_args) + 4; /* for " -- " */ + } - len = xlen + strlen(boot_command_line) + 1; + len = xlen + strlen(boot_command_line) + ilen + 1; - saved_command_line = memblock_alloc(len + ilen, SMP_CACHE_BYTES); + saved_command_line = memblock_alloc(len, SMP_CACHE_BYTES); if (!saved_command_line) - panic("%s: Failed to allocate %zu bytes\n", __func__, len + ilen); + panic("%s: Failed to allocate %zu bytes\n", __func__, len); len = xlen + strlen(command_line) + 1; @@ -878,6 +886,19 @@ static void __init print_unknown_bootoptions(void) memblock_free(unknown_options, len); } +static void __init early_numa_node_init(void) +{ +#ifdef CONFIG_USE_PERCPU_NUMA_NODE_ID +#ifndef cpu_to_node + int cpu; + + /* The early_cpu_to_node() should be ready here. */ + for_each_possible_cpu(cpu) + set_cpu_numa_node(cpu, early_cpu_to_node(cpu)); +#endif +#endif +} + asmlinkage __visible __init __no_sanitize_address __noreturn __no_stack_protector void start_kernel(void) { @@ -908,6 +929,7 @@ void start_kernel(void) setup_nr_cpu_ids(); setup_per_cpu_areas(); smp_prepare_boot_cpu(); /* arch-specific boot-cpu hooks */ + early_numa_node_init(); boot_cpu_hotplug_init(); pr_notice("Kernel command line: %s\n", saved_command_line); @@ -1415,6 +1437,7 @@ static void mark_readonly(void) * insecure pages which are W+X. */ flush_module_init_free_work(); + jump_label_init_ro(); mark_rodata_ro(); debug_checkwx(); rodata_test(); |