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| author |   Thomas Gleixner <tglx@linutronix.de> | 2012-05-03 09:02:48 +0000 |
|---|---|---|
| committer | Thomas Gleixner <tglx@linutronix.de> | 2012-05-05 13:00:21 +0200 |
| commit | a4a2eb490e38aaff61eafcb8cde6725ad1be22ab (patch) | |
| tree | cc626df26302e96f3fc7247f3fe895d2eddb69f6 | |
| parent | frv: Use core allocator for task_struct (diff) | |
| download | linux-dev-a4a2eb490e38aaff61eafcb8cde6725ad1be22ab.tar.xz linux-dev-a4a2eb490e38aaff61eafcb8cde6725ad1be22ab.zip | |
init_task: Create generic init_task instance
All archs define init_task in the same way (except ia64, but there is
no particular reason why ia64 cannot use the common version). Create a
generic instance so all archs can be converted over.
The config switch is temporary and will be removed when all archs are
converted over.
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Cc: Chen Liqin <liqin.chen@sunplusct.com>
Cc: Chris Metcalf <cmetcalf@tilera.com>
Cc: Chris Zankel <chris@zankel.net>
Cc: David Howells <dhowells@redhat.com>
Cc: David S. Miller <davem@davemloft.net>
Cc: Geert Uytterhoeven <geert@linux-m68k.org>
Cc: Guan Xuetao <gxt@mprc.pku.edu.cn>
Cc: Haavard Skinnemoen <hskinnemoen@gmail.com>
Cc: Hirokazu Takata <takata@linux-m32r.org>
Cc: James E.J. Bottomley <jejb@parisc-linux.org>
Cc: Jesper Nilsson <jesper.nilsson@axis.com>
Cc: Jonas Bonn <jonas@southpole.se>
Cc: Mark Salter <msalter@redhat.com>
Cc: Martin Schwidefsky <schwidefsky@de.ibm.com>
Cc: Heiko Carstens <heiko.carstens@de.ibm.com>
Cc: Matt Turner <mattst88@gmail.com>
Cc: Michal Simek <monstr@monstr.eu>
Cc: Mike Frysinger <vapier@gentoo.org>
Cc: Paul Mundt <lethal@linux-sh.org>
Cc: Ralf Baechle <ralf@linux-mips.org>
Cc: Richard Kuo <rkuo@codeaurora.org>
Cc: Richard Weinberger <richard@nod.at>
Cc: Russell King <linux@arm.linux.org.uk>
Cc: Yoshinori Sato <ysato@users.sourceforge.jp>
Link: http://lkml.kernel.org/r/20120503085034.092585287@linutronix.de
| -rw-r--r-- | arch/Kconfig | 3 | ||||
| -rw-r--r-- | init/Makefile | 1 | ||||
| -rw-r--r-- | init/init_task.c | 24 | ||||
| -rw-r--r-- | kernel/sched/Makefile | 2 |
4 files changed, 28 insertions, 2 deletions
diff --git a/arch/Kconfig b/arch/Kconfig index 4f0d0f7c8313..2dd8fdd7ea9f 100644 --- a/arch/Kconfig +++ b/arch/Kconfig @@ -148,6 +148,9 @@ config USE_GENERIC_SMP_HELPERS config GENERIC_SMP_IDLE_THREAD bool +config HAVE_GENERIC_INIT_TASK + bool + config HAVE_REGS_AND_STACK_ACCESS_API bool help diff --git a/init/Makefile b/init/Makefile index 0bf677aa0872..c55eac955cdc 100644 --- a/init/Makefile +++ b/init/Makefile @@ -9,6 +9,7 @@ else obj-$(CONFIG_BLK_DEV_INITRD) += initramfs.o endif obj-$(CONFIG_GENERIC_CALIBRATE_DELAY) += calibrate.o +obj-$(CONFIG_HAVE_GENERIC_INIT_TASK) += init_task.o mounts-y := do_mounts.o mounts-$(CONFIG_BLK_DEV_RAM) += do_mounts_rd.o diff --git a/init/init_task.c b/init/init_task.c new file mode 100644 index 000000000000..8b2f3996b035 --- /dev/null +++ b/init/init_task.c @@ -0,0 +1,24 @@ +#include <linux/init_task.h> +#include <linux/export.h> +#include <linux/mqueue.h> +#include <linux/sched.h> +#include <linux/init.h> +#include <linux/fs.h> +#include <linux/mm.h> + +#include <asm/pgtable.h> +#include <asm/uaccess.h> + +static struct signal_struct init_signals = INIT_SIGNALS(init_signals); +static struct sighand_struct init_sighand = INIT_SIGHAND(init_sighand); + +/* Initial task structure */ +struct task_struct init_task = INIT_TASK(init_task); +EXPORT_SYMBOL(init_task); + +/* + * Initial thread structure. Alignment of this is handled by a special + * linker map entry. + */ +union thread_union init_thread_union __init_task_data = + { INIT_THREAD_INFO(init_task) }; diff --git a/kernel/sched/Makefile b/kernel/sched/Makefile index 9a7dd35102a3..173ea52f3af0 100644 --- a/kernel/sched/Makefile +++ b/kernel/sched/Makefile @@ -16,5 +16,3 @@ obj-$(CONFIG_SMP) += cpupri.o obj-$(CONFIG_SCHED_AUTOGROUP) += auto_group.o obj-$(CONFIG_SCHEDSTATS) += stats.o obj-$(CONFIG_SCHED_DEBUG) += debug.o - - |