diff options
Diffstat (limited to 'init')
| -rw-r--r-- | init/Kconfig | 43 | ||||
| -rw-r--r-- | init/do_mounts.c | 24 | ||||
| -rw-r--r-- | init/main.c | 1 |
3 files changed, 41 insertions, 27 deletions
diff --git a/init/Kconfig b/init/Kconfig index d3ad48272924..bd7d650d4a99 100644 --- a/init/Kconfig +++ b/init/Kconfig @@ -24,6 +24,9 @@ config CLANG_VERSION int default $(shell,$(srctree)/scripts/clang-version.sh $(CC)) +config CC_CAN_LINK + def_bool $(success,$(srctree)/scripts/cc-can-link.sh $(CC)) + config CC_HAS_ASM_GOTO def_bool $(success,$(srctree)/scripts/gcc-goto.sh $(CC)) @@ -96,6 +99,36 @@ config COMPILE_TEST here. If you are a user/distributor, say N here to exclude useless drivers to be distributed. +config HEADER_TEST + bool "Compile test headers that should be standalone compilable" + help + Compile test headers listed in header-test-y target to ensure they are + self-contained, i.e. compilable as standalone units. + + If you are a developer or tester and want to ensure the requested + headers are self-contained, say Y here. Otherwise, choose N. + +config KERNEL_HEADER_TEST + bool "Compile test kernel headers" + depends on HEADER_TEST + help + Headers in include/ are used to build external moduls. + Compile test them to ensure they are self-contained, i.e. + compilable as standalone units. + + If you are a developer or tester and want to ensure the headers + in include/ are self-contained, say Y here. Otherwise, choose N. + +config UAPI_HEADER_TEST + bool "Compile test UAPI headers" + depends on HEADER_TEST && HEADERS_INSTALL && CC_CAN_LINK + help + Compile test headers exported to user-space to ensure they are + self-contained, i.e. compilable as standalone units. + + If you are a developer or tester and want to ensure the exported + headers are self-contained, say Y here. Otherwise, choose N. + config LOCALVERSION string "Local version - append to kernel release" help @@ -517,7 +550,7 @@ config PSI have cpu.pressure, memory.pressure, and io.pressure files, which aggregate pressure stalls for the grouped tasks only. - For more details see Documentation/accounting/psi.txt. + For more details see Documentation/accounting/psi.rst. Say N if unsure. @@ -788,7 +821,7 @@ menuconfig CGROUPS controls or device isolation. See - Documentation/scheduler/sched-design-CFS.rst (CFS) - - Documentation/cgroup-v1/ (features for grouping, isolation + - Documentation/admin-guide/cgroup-v1/ (features for grouping, isolation and resource control) Say N if unsure. @@ -850,7 +883,7 @@ config BLK_CGROUP CONFIG_CFQ_GROUP_IOSCHED=y; for enabling throttling policy, set CONFIG_BLK_DEV_THROTTLING=y. - See Documentation/cgroup-v1/blkio-controller.rst for more information. + See Documentation/admin-guide/cgroup-v1/blkio-controller.rst for more information. config CGROUP_WRITEBACK bool @@ -1794,7 +1827,7 @@ config SLAB_FREELIST_HARDENED help Many kernel heap attacks try to target slab cache metadata and other infrastructure. This options makes minor performance - sacrifies to harden the kernel slab allocator against common + sacrifices to harden the kernel slab allocator against common freelist exploit methods. config SHUFFLE_PAGE_ALLOCATOR @@ -1826,7 +1859,7 @@ config SLUB_CPU_PARTIAL depends on SLUB && SMP bool "SLUB per cpu partial cache" help - Per cpu partial caches accellerate objects allocation and freeing + Per cpu partial caches accelerate objects allocation and freeing that is local to a processor at the price of more indeterminism in the latency of the free. On overflow these caches will be cleared which requires the taking of locks that may cause latency spikes. diff --git a/init/do_mounts.c b/init/do_mounts.c index 2d1ea3028454..53cb37b66227 100644 --- a/init/do_mounts.c +++ b/init/do_mounts.c @@ -630,41 +630,23 @@ static bool is_tmpfs; static struct dentry *rootfs_mount(struct file_system_type *fs_type, int flags, const char *dev_name, void *data) { - static unsigned long once; void *fill = ramfs_fill_super; - if (test_and_set_bit(0, &once)) - return ERR_PTR(-ENODEV); - if (IS_ENABLED(CONFIG_TMPFS) && is_tmpfs) fill = shmem_fill_super; return mount_nodev(fs_type, flags, data, fill); } -static struct file_system_type rootfs_fs_type = { +struct file_system_type rootfs_fs_type = { .name = "rootfs", .mount = rootfs_mount, .kill_sb = kill_litter_super, }; -int __init init_rootfs(void) +void __init init_rootfs(void) { - int err = register_filesystem(&rootfs_fs_type); - - if (err) - return err; - if (IS_ENABLED(CONFIG_TMPFS) && !saved_root_name[0] && - (!root_fs_names || strstr(root_fs_names, "tmpfs"))) { - err = shmem_init(); + (!root_fs_names || strstr(root_fs_names, "tmpfs"))) is_tmpfs = true; - } else { - err = init_ramfs_fs(); - } - - if (err) - unregister_filesystem(&rootfs_fs_type); - - return err; } diff --git a/init/main.c b/init/main.c index ff5803b0841c..96f8d5af52d6 100644 --- a/init/main.c +++ b/init/main.c @@ -1025,7 +1025,6 @@ static void __init do_initcalls(void) static void __init do_basic_setup(void) { cpuset_init_smp(); - shmem_init(); driver_init(); init_irq_proc(); do_ctors(); |