linux-toradex.git/init/main.c, branch v2.6.25.2

ACPI: Remove ACPI_CUSTOM_DSDT_INITRD option

2008-03-15T18:58:04+00:00

This essentially reverts commit 71fc47a9adf8ee89e5c96a47222915c5485ac437
("ACPI: basic initramfs DSDT override support"), because the code simply
isn't ready.

It did ugly things to the init sequence to populate the rootfs image
early, but that just ended up showing other problems with the whole
approach.  The fact is, the VFS layer simply isn't initialized this
early, and the relevant ACPI code should either run much later, or this
shouldn't be done at all.

For 2.6.25, we'll just pick the latter option.  We can revisit this
concept later if necessary.

Cc: Dave Hansen 
Cc: Tilman Schmidt 
Cc: Andrew Morton 
Cc: Thomas Renninger 
Cc: Eric Piel 
Cc: Len Brown 
Cc: Christoph Hellwig 
Cc: Markus Gaugusch 
Signed-off-by: Linus Torvalds

Fix "Malformed early option 'loglevel'"

2008-03-05T00:35:10+00:00

Keith Mannthey said:

  The parameter hotadd_percent is setup right but there is a "Malformed
  early option 'numa'" message.

Rusty Russell said:

  This happens when the function registered with early_param() returns
  non-zero.  __setup() functions return 1 if OK, module_param() and
  early_param() return 0 or a -ve error code.

For instance:

Linux version 2.6.25-rc3-t (raa@steel) (gcc version 4.1.3 20070929 (prerelease) (Ubuntu 4.1.2-16ubuntu2)) #22 SMP PREEMPT Tue Feb 26
BIOS-provided physical RAM map:
 BIOS-e820: 0000000000000000 - 00000000000a0000 (usable)
 BIOS-e820: 00000000000f0000 - 0000000000100000 (reserved)
 BIOS-e820: 0000000000100000 - 000000003fff0000 (usable)
 BIOS-e820: 000000003fff0000 - 000000003fff3000 (ACPI NVS)
 BIOS-e820: 000000003fff3000 - 0000000040000000 (ACPI data)
 BIOS-e820: 00000000fec00000 - 0000000100000000 (reserved)
Malformed early option 'loglevel'
127MB HIGHMEM available.
896MB LOWMEM available.

Command line:

BOOT_IMAGE=2.6.25-t ro root=809 ro console=ttyS0,57600n8 console=tty0 loglevel=5

Acked-by: Yinghai Lu 
Cc: Rusty Russell 
Cc: Keith Mannthey 
Signed-off-by: Andrew Morton 
Signed-off-by: Linus Torvalds

x86: DEBUG_PAGEALLOC: enable after mem_init()

2008-02-09T22:24:09+00:00

DEBUG_PAGEALLOC must not be enabled before mem_init(). Before this
point there is nothing to allocate.

Signed-off-by: Thomas Gleixner 
Signed-off-by: Ingo Molnar

Convert loglevel-related kernel boot parameters to early_param

2008-02-08T17:22:42+00:00

So we can use them for the early console like console=uart8250 or
earlycon=uart8250 or early_printk

Signed-off-by: Yinghai Lu 
Cc: Andi Kleen 
Signed-off-by: Andrew Morton 
Signed-off-by: Linus Torvalds

start the global /sbin/init with 0,0 special pids

2008-02-08T17:22:27+00:00

As Eric pointed out, there is no problem with init starting with sid == pgid
== 0, and this was historical linux behavior changed in 2.6.18.

Remove kernel_init()->__set_special_pids(), this is unneeded and complicates
the rules for sys_setsid().

This change and the previous change in daemonize() mean that /sbin/init does
not need the special "session != 1" hack in sys_setsid() any longer. We can't
remove this check yet, we should cleanup copy_process(CLONE_NEWPID) first, so
update the comment only.

Signed-off-by: Oleg Nesterov 
Acked-by: "Eric W. Biederman" 
Cc: Pavel Emelyanov 
Signed-off-by: Andrew Morton 
Signed-off-by: Linus Torvalds

teach set_special_pids() to use struct pid

2008-02-08T17:22:27+00:00

Change set_special_pids() to work with struct pid, not pid_t from global name
space. This again speedups and imho cleanups the code, also a preparation for
the next patch.

Signed-off-by: Oleg Nesterov 
Acked-by: "Eric W. Biederman" 
Acked-by: Pavel Emelyanov 
Signed-off-by: Andrew Morton 
Signed-off-by: Linus Torvalds

ACPI: basic initramfs DSDT override support

2008-02-07T03:07:41+00:00

The basics of DSDT from initramfs. In case this option is selected,
populate_rootfs() is called a bit earlier to have the initramfs content
available during ACPI initialization.

This is a very similar path to the one available at
http://gaugusch.at/kernel.shtml but with some update in the
documentation, default set to No and the change of populate_rootfs() the
"Jeff Mahony way" (which avoids reading the initramfs twice).

Signed-off-by: Thomas Renninger 
Signed-off-by: Eric Piel 
Signed-off-by: Len Brown

proper prototype for signals_init()

2008-02-06T18:41:02+00:00

Add a proper prototype for signals_init() in include/linux/signal.h

Signed-off-by: Adrian Bunk 
Signed-off-by: Andrew Morton 
Signed-off-by: Linus Torvalds

x86: do not PSE on CONFIG_DEBUG_PAGEALLOC=y

2008-01-30T12:33:58+00:00

get more testing of the c_p_a() code done by not turning off
PSE on DEBUG_PAGEALLOC.

this simplifies the early pagetable setup code, and tests
the largepage-splitup code quite heavily.

In the end, all the largepages will be split up pretty quickly,
so there's no difference to how DEBUG_PAGEALLOC worked before.

Signed-off-by: Ingo Molnar 
Signed-off-by: Thomas Gleixner

x86/non-x86: percpu, node ids, apic ids x86.git fixup

2008-01-30T12:33:32+00:00

Signed-off-by: Ingo Molnar 
Signed-off-by: Thomas Gleixner