linux-toradex.git/init/main.c, branch tegra-9.12.13

Merge commit 'arm/2.6.28-arm' into android-tegra-2.6.29

2009-12-08T00:18:05+00:00

Conflicts:
	MAINTAINERS
	arch/arm/Kconfig
	arch/arm/Makefile
	arch/arm/boot/compressed/head.S
	arch/arm/common/Makefile
	arch/arm/configs/realview-smp_defconfig
	arch/arm/configs/realview_defconfig
	arch/arm/configs/versatile_defconfig
	arch/arm/include/asm/elf.h
	arch/arm/include/asm/uaccess.h
	arch/arm/kernel/module.c
	arch/arm/kernel/signal.c
	arch/arm/mach-realview/Kconfig
	arch/arm/mach-realview/Makefile
	arch/arm/mach-realview/core.c
	arch/arm/mach-realview/core.h
	arch/arm/mach-realview/include/mach/board-pba8.h
	arch/arm/mach-realview/include/mach/debug-macro.S
	arch/arm/mach-realview/include/mach/hardware.h
	arch/arm/mach-realview/include/mach/irqs.h
	arch/arm/mach-realview/include/mach/memory.h
	arch/arm/mach-realview/include/mach/uncompress.h
	arch/arm/mach-realview/localtimer.c
	arch/arm/mach-realview/platsmp.c
	arch/arm/mach-realview/realview_eb.c
	arch/arm/mach-realview/realview_pb1176.c
	arch/arm/mach-realview/realview_pb11mp.c
	arch/arm/mach-realview/realview_pba8.c
	arch/arm/mm/Kconfig
	arch/arm/mm/copypage-v6.c
	arch/arm/mm/dma-mapping.c
	arch/arm/mm/proc-v7.S
	arch/arm/oprofile/op_model_mpcore.c
	arch/arm/tools/mach-types
	arch/arm/vfp/vfpmodule.c
	drivers/mtd/maps/integrator-flash.c
	drivers/net/smsc911x.c
	drivers/net/smsc911x.h

run_init_process() error reporting

2009-03-10T10:22:27+00:00

This function prints the error code returned by execve.

Signed-off-by: Catalin Marinas

rcu: Teach RCU that idle task is not quiscent state at boot

2009-02-26T03:08:14+00:00

This patch fixes a bug located by Vegard Nossum with the aid of
kmemcheck, updated based on review comments from Nick Piggin,
Ingo Molnar, and Andrew Morton.  And cleans up the variable-name
and function-name language.  ;-)

The boot CPU runs in the context of its idle thread during boot-up.
During this time, idle_cpu(0) will always return nonzero, which will
fool Classic and Hierarchical RCU into deciding that a large chunk of
the boot-up sequence is a big long quiescent state.  This in turn causes
RCU to prematurely end grace periods during this time.

This patch changes the rcutree.c and rcuclassic.c rcu_check_callbacks()
function to ignore the idle task as a quiescent state until the
system has started up the scheduler in rest_init(), introducing a
new non-API function rcu_idle_now_means_idle() to inform RCU of this
transition.  RCU maintains an internal rcu_idle_cpu_truthful variable
to track this state, which is then used by rcu_check_callback() to
determine if it should believe idle_cpu().

Because this patch has the effect of disallowing RCU grace periods
during long stretches of the boot-up sequence, this patch also introduces
Josh Triplett's UP-only optimization that makes synchronize_rcu() be a
no-op if num_online_cpus() returns 1.  This allows boot-time code that
calls synchronize_rcu() to proceed normally.  Note, however, that RCU
callbacks registered by call_rcu() will likely queue up until later in
the boot sequence.  Although rcuclassic and rcutree can also use this
same optimization after boot completes, rcupreempt must restrict its
use of this optimization to the portion of the boot sequence before the
scheduler starts up, given that an rcupreempt RCU read-side critical
section may be preeempted.

In addition, this patch takes Nick Piggin's suggestion to make the
system_state global variable be __read_mostly.

Changes since v4:

o	Changes the name of the introduced function and variable to
	be less emotional.  ;-)

Changes since v3:

o	WARN_ON(nr_context_switches() > 0) to verify that RCU
	switches out of boot-time mode before the first context
	switch, as suggested by Nick Piggin.

Changes since v2:

o	Created rcu_blocking_is_gp() internal-to-RCU API that
	determines whether a call to synchronize_rcu() is itself
	a grace period.

o	The definition of rcu_blocking_is_gp() for rcuclassic and
	rcutree checks to see if but a single CPU is online.

o	The definition of rcu_blocking_is_gp() for rcupreempt
	checks to see both if but a single CPU is online and if
	the system is still in early boot.

	This allows rcupreempt to again work correctly if running
	on a single CPU after booting is complete.

o	Added check to rcupreempt's synchronize_sched() for there
	being but one online CPU.

Tested all three variants both SMP and !SMP, booted fine, passed a short
rcutorture test on both x86 and Power.

Located-by: Vegard Nossum 
Tested-by: Vegard Nossum 
Tested-by: Paul E. McKenney 
Signed-off-by: Paul E. McKenney 
Signed-off-by: Ingo Molnar

Merge git://git.kernel.org/pub/scm/linux/kernel/git/arjan/linux-2.6-async

2009-01-07T23:35:47+00:00

* git://git.kernel.org/pub/scm/linux/kernel/git/arjan/linux-2.6-async:
  async: don't do the initcall stuff post boot
  bootchart: improve output based on Dave Jones' feedback
  async: make the final inode deletion an asynchronous event
  fastboot: Make libata initialization even more async
  fastboot: make the libata port scan asynchronous
  fastboot: make scsi probes asynchronous
  async: Asynchronous function calls to speed up kernel boot

Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jikos/trivial

2009-01-07T19:31:52+00:00

* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jikos/trivial: (24 commits)
  trivial: chack -> check typo fix in main Makefile
  trivial: Add a space (and a comma) to a printk in 8250 driver
  trivial: Fix misspelling of "firmware" in docs for ncr53c8xx/sym53c8xx
  trivial: Fix misspelling of "firmware" in powerpc Makefile
  trivial: Fix misspelling of "firmware" in usb.c
  trivial: Fix misspelling of "firmware" in qla1280.c
  trivial: Fix misspelling of "firmware" in a100u2w.c
  trivial: Fix misspelling of "firmware" in megaraid.c
  trivial: Fix misspelling of "firmware" in ql4_mbx.c
  trivial: Fix misspelling of "firmware" in acpi_memhotplug.c
  trivial: Fix misspelling of "firmware" in ipw2100.c
  trivial: Fix misspelling of "firmware" in atmel.c
  trivial: Fix misspelled firmware in Kconfig
  trivial: fix an -> a typos in documentation and comments
  trivial: fix then -> than typos in comments and documentation
  trivial: update Jesper Juhl CREDITS entry with new email
  trivial: fix singal -> signal typo
  trivial: Fix incorrect use of "loose" in event.c
  trivial: printk: fix indentation of new_text_line declaration
  trivial: rtc-stk17ta8: fix sparse warning
  ...

async: Asynchronous function calls to speed up kernel boot

2009-01-07T16:45:46+00:00

Right now, most of the kernel boot is strictly synchronous, such that
various hardware delays are done sequentially.

In order to make the kernel boot faster, this patch introduces
infrastructure to allow doing some of the initialization steps
asynchronously, which will hide significant portions of the hardware delays
in practice.

In order to not change device order and other similar observables, this
patch does NOT do full parallel initialization.

Rather, it operates more in the way an out of order CPU does; the work may
be done out of order and asynchronous, but the observable effects
(instruction retiring for the CPU) are still done in the original sequence.

Signed-off-by: Arjan van de Ven

init/main.c: mark late_time_init as __initdata

2009-01-06T23:59:14+00:00

Signed-off-by: Jan Beulich 
Signed-off-by: Andrew Morton 
Signed-off-by: Linus Torvalds

Remove remaining unwinder code

2009-01-06T23:59:11+00:00

Signed-off-by: Alexey Dobriyan 
Cc: Gabor Gombas 
Cc: Jan Beulich 
Cc: Andi Kleen 
Cc: Ingo Molnar ,
Signed-off-by: Andrew Morton 
Signed-off-by: Linus Torvalds

init: properly placing noinline keyword

2009-01-06T23:59:10+00:00

checkpatch warns about 'static void noinline'.  It wants `static noinline
void'.

Both are permissible, but the kernel consistently uses `static inline' and
`static noinline', and consistency is good.  Hence let's keep the
checkpatch warning and fix up this code site.

[akpm@linux-foundation.org: rewrote changelog]
Signed-off-by: Md.Rakib H. Mullick 
Signed-off-by: Andrew Morton 
Signed-off-by: Linus Torvalds

trivial: add missing printk loglevel in start_kernel

2009-01-06T10:28:05+00:00

Add missing printk loglevel in start_kernel

Signed-off-by: Ron Lee 
Signed-off-by: Jiri Kosina