From: Thomas Gleixner <tglx@linutronix.de> To: LKML <linux-kernel@vger.kernel.org> Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org>, Chen Liqin <liqin.chen@sunplusct.com>, Chris Metcalf <cmetcalf@tilera.com>, Chris Zankel <chris@zankel.net>, David Howells <dhowells@redhat.com>, "David S. Miller" <davem@davemloft.net>, Geert Uytterhoeven <geert@linux-m68k.org>, Guan Xuetao <gxt@mprc.pku.edu.cn>, Haavard Skinnemoen <hskinnemoen@gmail.com>, Hirokazu Takata <takata@linux-m32r.org>, "James E.J. Bottomley" <jejb@parisc-linux.org>, Jesper Nilsson <jesper.nilsson@axis.com>, Jonas Bonn <jonas@southpole.se>, Mark Salter <msalter@redhat.com>, Martin Schwidefsky <schwidefsky@de.ibm.com>, Heiko Carstens <heiko.carstens@de.ibm.com>, Matt Turner <mattst88@gmail.com>, Michal Simek <monstr@monstr.eu>, Mike Frysinger <vapier@gentoo.org>, Paul Mundt <lethal@linux-sh.org>, Ralf Baechle <ralf@linux-mips.org>, Richard Kuo <rkuo@codeaurora.org>, Richard Weinberger <richard@nod.at>, Russell King <linux@arm.linux.org.uk>, x86@kernel.org, Yoshinori Sato <ysato@users.sourceforge.jp> Subject: [patch V2 04/31] init_task: Create generic init_task instance Date: Thu, 03 May 2012 09:02:48 -0000 Message-ID: <20120503085034.092585287@linutronix.de> (raw) In-Reply-To: <20120503083859.991965503@linutronix.de> [-- Attachment #0: init-task-move-common-code-to-core.patch --] [-- Type: text/plain, Size: 3537 bytes --] 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: x86@kernel.org Cc: Yoshinori Sato <ysato@users.sourceforge.jp> --- arch/Kconfig | 3 +++ init/Makefile | 1 + init/init_task.c | 24 ++++++++++++++++++++++++ kernel/sched/Makefile | 2 -- 4 files changed, 28 insertions(+), 2 deletions(-) Index: tip/arch/Kconfig =================================================================== --- tip.orig/arch/Kconfig +++ tip/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 Index: tip/init/Makefile =================================================================== --- tip.orig/init/Makefile +++ tip/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 Index: tip/init/init_task.c =================================================================== --- /dev/null +++ tip/init/init_task.c @@ -0,0 +1,24 @@ +#include <linux/init_task.h> +#include <linux/module.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) }; Index: tip/kernel/sched/Makefile =================================================================== --- tip.orig/kernel/sched/Makefile +++ tip/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 - -
next prev parent reply index Thread overview: 69+ messages / expand[flat|nested] mbox.gz Atom feed top 2012-05-03 9:02 [patch V2 00/31] init_task: Use a generic init_task variant Thomas Gleixner 2012-05-03 9:02 ` [patch V2 01/31] frv: Use correct size for task_struct allocation Thomas Gleixner 2012-05-05 18:46 ` [tip:smp/hotplug] " tip-bot for Thomas Gleixner 2012-05-03 9:02 ` [patch V2 02/31] frv: Use core allocator for task_struct Thomas Gleixner 2012-05-05 18:47 ` [tip:smp/hotplug] " tip-bot for Thomas Gleixner 2012-05-03 9:02 ` [patch V2 03/31] task_allocator: Use config switches instead of magic defines Thomas Gleixner 2012-05-03 9:02 ` Thomas Gleixner [this message] 2012-05-05 18:49 ` [tip:smp/hotplug] init_task: Create generic init_task instance tip-bot for Thomas Gleixner 2012-05-03 9:02 ` [patch V2 05/31] alpha: Use generic init_task Thomas Gleixner 2012-05-05 18:50 ` [tip:smp/hotplug] " tip-bot for Thomas Gleixner 2012-05-03 9:02 ` [patch V2 06/31] arm: " Thomas Gleixner 2012-05-05 18:51 ` [tip:smp/hotplug] " tip-bot for Thomas Gleixner 2012-05-03 9:02 ` [patch V2 07/31] avr32: " Thomas Gleixner 2012-05-05 18:51 ` [tip:smp/hotplug] " tip-bot for Thomas Gleixner 2012-05-03 9:02 ` [patch V2 08/31] blackfin: " Thomas Gleixner 2012-05-05 18:52 ` [tip:smp/hotplug] " tip-bot for Thomas Gleixner 2012-05-03 9:02 ` [patch V2 10/31] cris: " Thomas Gleixner 2012-05-05 18:54 ` [tip:smp/hotplug] " tip-bot for Thomas Gleixner 2012-05-03 9:02 ` [patch V2 09/31] cx6: " Thomas Gleixner 2012-05-03 13:45 ` Mark Salter 2012-05-03 15:25 ` Thomas Gleixner 2012-05-05 18:53 ` [tip:smp/hotplug] c6x: " tip-bot for Thomas Gleixner 2012-05-03 9:02 ` [patch V2 11/31] frv: " Thomas Gleixner 2012-05-05 18:55 ` [tip:smp/hotplug] " tip-bot for Thomas Gleixner 2012-05-03 9:02 ` [patch V2 12/31] h8300: " Thomas Gleixner 2012-05-05 18:56 ` [tip:smp/hotplug] h8300-use-generic-init_task tip-bot for Thomas Gleixner 2012-05-03 9:02 ` [patch V2 14/31] m32r: Use generic init_task Thomas Gleixner 2012-05-05 18:57 ` [tip:smp/hotplug] " tip-bot for Thomas Gleixner 2012-05-03 9:02 ` [patch V2 13/31] hexagon: Use generic idle_task Thomas Gleixner 2012-05-05 18:56 ` [tip:smp/hotplug] " tip-bot for Thomas Gleixner 2012-05-03 9:02 ` [patch V2 15/31] m68k: Use generic init_task Thomas Gleixner 2012-05-05 18:58 ` [tip:smp/hotplug] " tip-bot for Thomas Gleixner 2012-05-03 9:02 ` [patch V2 16/31] microblaze: " Thomas Gleixner 2012-05-05 18:59 ` [tip:smp/hotplug] " tip-bot for Thomas Gleixner 2012-05-03 9:02 ` [patch V2 17/31] mips: " Thomas Gleixner 2012-05-05 19:00 ` [tip:smp/hotplug] " tip-bot for Thomas Gleixner 2012-05-03 9:02 ` [patch V2 19/31] openrisc: " Thomas Gleixner 2012-05-05 19:01 ` [tip:smp/hotplug] " tip-bot for Thomas Gleixner 2012-05-08 9:37 ` [patch V2 19/31] " Jonas Bonn 2012-05-03 9:02 ` [patch V2 18/31] mn10300: " Thomas Gleixner 2012-05-05 19:01 ` [tip:smp/hotplug] " tip-bot for Thomas Gleixner 2012-05-03 9:02 ` [patch V2 21/31] powerpc: " Thomas Gleixner 2012-05-05 19:03 ` [tip:smp/hotplug] " tip-bot for Thomas Gleixner 2012-05-03 9:02 ` [patch V2 20/31] parisc: " Thomas Gleixner 2012-05-05 19:02 ` [tip:smp/hotplug] " tip-bot for Thomas Gleixner 2012-05-03 9:02 ` [patch V2 22/31] s390: " Thomas Gleixner 2012-05-03 10:00 ` Heiko Carstens 2012-05-05 19:04 ` [tip:smp/hotplug] " tip-bot for Thomas Gleixner 2012-05-03 9:02 ` [patch V2 23/31] score: " Thomas Gleixner 2012-05-05 19:05 ` [tip:smp/hotplug] " tip-bot for Thomas Gleixner 2012-05-03 9:02 ` [patch V2 26/31] tile: " Thomas Gleixner 2012-05-05 19:07 ` [tip:smp/hotplug] " tip-bot for Thomas Gleixner 2012-05-03 9:02 ` [patch V2 24/31] sh: " Thomas Gleixner 2012-05-05 19:06 ` [tip:smp/hotplug] " tip-bot for Thomas Gleixner 2012-05-03 9:02 ` [patch V2 25/31] sparc: " Thomas Gleixner 2012-05-05 19:06 ` [tip:smp/hotplug] " tip-bot for Thomas Gleixner 2012-05-03 9:03 ` [patch V2 27/31] um: " Thomas Gleixner 2012-05-05 19:09 ` [tip:smp/hotplug] " tip-bot for Thomas Gleixner 2012-05-03 9:03 ` [patch V2 28/31] unicore32: " Thomas Gleixner 2012-05-05 19:08 ` [tip:smp/hotplug] " tip-bot for Thomas Gleixner 2012-05-03 9:03 ` [patch V2 29/31] x86: " Thomas Gleixner 2012-05-05 19:10 ` [tip:smp/hotplug] " tip-bot for Thomas Gleixner 2012-05-03 9:03 ` [patch V2 30/31] xtensa: " Thomas Gleixner 2012-05-05 19:11 ` [tip:smp/hotplug] " tip-bot for Thomas Gleixner 2012-05-03 9:03 ` [patch V2 31/31] init_task: Replace CONFIG_HAVE_GENERIC_INIT_TASK Thomas Gleixner 2012-05-05 19:11 ` [tip:smp/hotplug] " tip-bot for Thomas Gleixner 2012-05-04 17:28 ` [patch V2 03/31] task_allocator: Use config switches instead of magic defines David Howells 2012-05-05 10:54 ` Thomas Gleixner 2012-05-04 17:30 ` [patch V2 02/31] frv: Use core allocator for task_struct David Howells
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