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| author | Hiroshi Shimamoto <h-shimamoto@ct.jp.nec.com> | 2007-10-19 20:35:02 +0200 |
|---|---|---|
| committer | Thomas Gleixner <tglx@linutronix.de> | 2007-10-19 20:35:02 +0200 |
| commit | 7778887880d278c23dc0975210df0381c878ae1e (patch) | |
| tree | 4c286d6a8d6467eaea9424b283b634934de02f87 /arch/x86/kernel/init_task.c | |
| parent | af93ebc0b3ed8cdf93a6ed4bc1fab548f8059d0a (diff) | |
| download | linux-7778887880d278c23dc0975210df0381c878ae1e.tar.gz linux-7778887880d278c23dc0975210df0381c878ae1e.tar.bz2 linux-7778887880d278c23dc0975210df0381c878ae1e.zip | |
x86: merge init_task_32/64.c
Merge init_task_32/64.c.
Move 64bit per cpu data orig_ist to setup64.c.
[ mingo: fixed checkpatch trivialities. ]
Signed-off-by: Hiroshi Shimamoto <h-shimamoto@ct.jp.nec.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Diffstat (limited to 'arch/x86/kernel/init_task.c')
| -rw-r--r-- | arch/x86/kernel/init_task.c | 47 |
1 files changed, 47 insertions, 0 deletions
diff --git a/arch/x86/kernel/init_task.c b/arch/x86/kernel/init_task.c new file mode 100644 index 000000000000..468c9c437842 --- /dev/null +++ b/arch/x86/kernel/init_task.c @@ -0,0 +1,47 @@ +#include <linux/mm.h> +#include <linux/module.h> +#include <linux/sched.h> +#include <linux/init.h> +#include <linux/init_task.h> +#include <linux/fs.h> +#include <linux/mqueue.h> + +#include <asm/uaccess.h> +#include <asm/pgtable.h> +#include <asm/desc.h> + +static struct fs_struct init_fs = INIT_FS; +static struct files_struct init_files = INIT_FILES; +static struct signal_struct init_signals = INIT_SIGNALS(init_signals); +static struct sighand_struct init_sighand = INIT_SIGHAND(init_sighand); +struct mm_struct init_mm = INIT_MM(init_mm); +EXPORT_SYMBOL(init_mm); + +/* + * Initial thread structure. + * + * We need to make sure that this is THREAD_SIZE aligned due to the + * way process stacks are handled. This is done by having a special + * "init_task" linker map entry.. + */ +union thread_union init_thread_union + __attribute__((__section__(".data.init_task"))) = + { INIT_THREAD_INFO(init_task) }; + +/* + * Initial task structure. + * + * All other task structs will be allocated on slabs in fork.c + */ +struct task_struct init_task = INIT_TASK(init_task); +EXPORT_SYMBOL(init_task); + +/* + * per-CPU TSS segments. Threads are completely 'soft' on Linux, + * no more per-task TSS's. The TSS size is kept cacheline-aligned + * so they are allowed to end up in the .data.cacheline_aligned + * section. Since TSS's are completely CPU-local, we want them + * on exact cacheline boundaries, to eliminate cacheline ping-pong. + */ +DEFINE_PER_CPU_SHARED_ALIGNED(struct tss_struct, init_tss) = INIT_TSS; + |