Commit Graph

510 Commits

Author SHA1 Message Date
David Miller f8b2256e9c sparc64: wire up accept4()
This adds the sparc syscall hookups.

Signed-off-by: David S. Miller <davem@davemloft.net>
Cc: Ulrich Drepper <drepper@redhat.com>
Cc: Michael Kerrisk <mtk.manpages@gmail.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2008-11-19 18:49:57 -08:00
Robert Reif e64ed0225b sparc: Fix tty compile warnings.
This patch fixes tty compile warnings as sugested by Alan Cox:

CC drivers/char/n_tty.o
drivers/char/n_tty.c: In function ‘normal_poll’:
drivers/char/n_tty.c:1555: warning: array subscript is above array bounds
drivers/char/n_tty.c:1564: warning: array subscript is above array bounds
drivers/char/n_tty.c: In function ‘read_chan’:
drivers/char/n_tty.c:1269: warning: array subscript is above array bounds
CC drivers/char/tty_ioctl.o
drivers/char/tty_ioctl.c: In function ‘set_termios’:
drivers/char/tty_ioctl.c:533: warning: array subscript is above array 
bounds
drivers/char/tty_ioctl.c:537: warning: array subscript is above array 
bounds
drivers/char/tty_ioctl.c: In function ‘tty_mode_ioctl’:
drivers/char/tty_ioctl.c:662: warning: array subscript is above array 
bounds
drivers/char/tty_ioctl.c:892: warning: array subscript is above array 
bounds
drivers/char/tty_ioctl.c:896: warning: array subscript is above array 
bounds
drivers/char/tty_ioctl.c:577: warning: array subscript is above array 
bounds
drivers/char/tty_ioctl.c:928: warning: array subscript is above array 
bounds
drivers/char/tty_ioctl.c:934: warning: array subscript is above array 
bounds

Signed-off-by: Robert Reif <reif@earthlink.net>
Signed-off-by: David S. Miller <davem@davemloft.net>
2008-11-12 23:51:54 -08:00
Kay Sievers 5acdc1fa2d sparc: struct device - replace bus_id with dev_name(), dev_set_name()
Acked-by: Greg Kroah-Hartman <gregkh@suse.de>
Signed-off-by: Kay Sievers <kay.sievers@vrfy.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
2008-11-12 23:48:40 -08:00
David S. Miller 29b1432816 Revert "sparc: correct section of current_pc()"
This reverts commit 8dd9453737.

This fixes a boot failure reported by Robert Reif.

The code above the section change expects to fallthrough, so
we can't make such a section change here.
2008-11-10 12:33:30 -08:00
Linus Torvalds 0bf82cccd1 Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/sparc-2.6
* git://git.kernel.org/pub/scm/linux/kernel/git/davem/sparc-2.6:
  sparc64: Fix PCI resource mapping on sparc64
  sparc64: Kill annoying warning when building compat_binfmt_elf.o
  sparc32: kernel/trace/trace.c wants DIE_OOPS
  sparc64: Fix __copy_{to,from}_user_inatomic defines.
2008-11-02 10:16:44 -08:00
David S. Miller a1995a6599 sparc64: Kill annoying warning when building compat_binfmt_elf.o
GCC warns because some tests against 32-bit values never evaluate to
true due to how TASK_SIZE is defined.

I always wanted to mimick powerpc's definition of TASK_SIZE, which
is simply TASK_SIZE_OF(current) and that also fixes the warning.

Signed-off-by: David S. Miller <davem@davemloft.net>
2008-11-02 00:15:38 -07:00
Al Viro e68f0aee89 sparc32: kernel/trace/trace.c wants DIE_OOPS
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
Signed-off-by: David S. Miller <davem@davemloft.net>
2008-11-01 21:44:01 -07:00
Hugh Dickins 145e1c0023 sparc64: Fix __copy_{to,from}_user_inatomic defines.
Alexander Beregalov reports oops in __bzero() called from
copy_from_user_fixup() called from iov_iter_copy_from_user_atomic(),
when running dbench on tmpfs on sparc64: its __copy_from_user_inatomic
and __copy_to_user_inatomic should be avoiding, not calling, the fixups.

Signed-off-by: Hugh Dickins <hugh@veritas.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2008-11-01 21:41:40 -07:00
Al Viro c10555faca sparc32: kernel/trace/trace.c wants DIE_OOPS
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2008-11-01 12:40:38 -07:00
Linus Torvalds 63b40456a3 Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/sparc-2.6
* git://git.kernel.org/pub/scm/linux/kernel/git/davem/sparc-2.6:
  sparc64: Add missing null terminating entry to bq4802_match[].
  sparc: use the new byteorder headers
  rtc-m48t59: shift zero year to 1968 on sparc (rev 2)
  dbri: check dma_alloc_coherent errors
  sparc64: remove byteshifting from out* helpers
2008-10-31 07:52:51 -07:00
Harvey Harrison 398cf93a39 sparc: use the new byteorder headers
Signed-off-by: Harvey Harrison <harvey.harrison@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2008-10-29 15:36:00 -07:00
Krzysztof Helt 12a9ee3cce rtc-m48t59: shift zero year to 1968 on sparc (rev 2)
Shift the first year to 1968 for Sun SPARC machines.

Move this logic from platform specific files to rtc driver
as this fixes problems with calculating a century bit.

Signed-off-by: Krzysztof Helt <krzysztof.h1@wp.pl>
Tested-by: Alexander Beregalov
Signed-off-by: David S. Miller <davem@davemloft.net>
2008-10-29 15:35:24 -07:00
Linus Torvalds 5579a782ad Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/sparc-2.6
* git://git.kernel.org/pub/scm/linux/kernel/git/davem/sparc-2.6:
  math-emu: Fix thinko in _FP_DIV
  math-emu: Fix signalling of underflow and inexact while packing result.
  sparc: Add checkstack support
  sparc: correct section of current_pc()
  sparc: correct section of apc_no_idle
  sparc64: Fix race in arch/sparc64/kernel/trampoline.S
2008-10-23 19:19:14 -07:00
Linus Torvalds 92fb83afd6 Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/rric/oprofile
* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/rric/oprofile: (21 commits)
  OProfile: Fix buffer synchronization for IBS
  oprofile: hotplug cpu fix
  oprofile: fixing whitespaces in arch/x86/oprofile/*
  oprofile: fixing whitespaces in arch/x86/oprofile/*
  oprofile: fixing whitespaces in drivers/oprofile/*
  x86/oprofile: add the logic for enabling additional IBS bits
  x86/oprofile: reordering functions in nmi_int.c
  x86/oprofile: removing unused function parameter in add_ibs_begin()
  oprofile: more whitespace fixes
  oprofile: whitespace fixes
  OProfile: Rename IBS sysfs dir into "ibs_op"
  OProfile: Rework string handling in setup_ibs_files()
  OProfile: Rework oprofile_add_ibs_sample() function
  oprofile: discover counters for op ppro too
  oprofile: Implement Intel architectural perfmon support
  oprofile: Don't report Nehalem as core_2
  oprofile: drop const in num counters field
  Revert "Oprofile Multiplexing Patch"
  x86, oprofile: BUG: using smp_processor_id() in preemptible code
  x86/oprofile: fix on_each_cpu build error
  ...

Manually fixed trivial conflicts in
	drivers/oprofile/{cpu_buffer.c,event_buffer.h}
2008-10-23 10:05:40 -07:00
Frederic Weisbecker 8dd9453737 sparc: correct section of current_pc()
Latest mainline gives this section mismatch on sparc:

The function current_pc() references
the variable __init no_sun4u_here.
This is often because current_pc lacks a __init
annotation or the annotation of no_sun4u_here is wrong.

Since current_pc() is used only in early time, it is correct to
put it in .init section.

Signed-off-by: Frederic Weisbecker <fweisbec@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2008-10-22 21:53:47 -07:00
Frederic Weisbecker a1731e5b9a sparc: correct section of apc_no_idle
The latest mainline gives this section mismatch on sparc:

The function __devinit apc_probe() references
a variable __initdata apc_no_idle.
If apc_no_idle is only used by apc_probe then
annotate apc_no_idle with a matching annotation.

Since the commit 7e7e2f0356,
apc_probe() is on __devinit so we have to correct apc_no_idle
which is referenced by this function.

Signed-off-by: Frederic Weisbecker <fweisbec@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2008-10-22 21:53:43 -07:00
Matt Helsley dc52ddc0e6 container freezer: implement freezer cgroup subsystem
This patch implements a new freezer subsystem in the control groups
framework.  It provides a way to stop and resume execution of all tasks in
a cgroup by writing in the cgroup filesystem.

The freezer subsystem in the container filesystem defines a file named
freezer.state.  Writing "FROZEN" to the state file will freeze all tasks
in the cgroup.  Subsequently writing "RUNNING" will unfreeze the tasks in
the cgroup.  Reading will return the current state.

* Examples of usage :

   # mkdir /containers/freezer
   # mount -t cgroup -ofreezer freezer  /containers
   # mkdir /containers/0
   # echo $some_pid > /containers/0/tasks

to get status of the freezer subsystem :

   # cat /containers/0/freezer.state
   RUNNING

to freeze all tasks in the container :

   # echo FROZEN > /containers/0/freezer.state
   # cat /containers/0/freezer.state
   FREEZING
   # cat /containers/0/freezer.state
   FROZEN

to unfreeze all tasks in the container :

   # echo RUNNING > /containers/0/freezer.state
   # cat /containers/0/freezer.state
   RUNNING

This is the basic mechanism which should do the right thing for user space
task in a simple scenario.

It's important to note that freezing can be incomplete.  In that case we
return EBUSY.  This means that some tasks in the cgroup are busy doing
something that prevents us from completely freezing the cgroup at this
time.  After EBUSY, the cgroup will remain partially frozen -- reflected
by freezer.state reporting "FREEZING" when read.  The state will remain
"FREEZING" until one of these things happens:

	1) Userspace cancels the freezing operation by writing "RUNNING" to
		the freezer.state file
	2) Userspace retries the freezing operation by writing "FROZEN" to
		the freezer.state file (writing "FREEZING" is not legal
		and returns EIO)
	3) The tasks that blocked the cgroup from entering the "FROZEN"
		state disappear from the cgroup's set of tasks.

[akpm@linux-foundation.org: coding-style fixes]
[akpm@linux-foundation.org: export thaw_process]
Signed-off-by: Cedric Le Goater <clg@fr.ibm.com>
Signed-off-by: Matt Helsley <matthltc@us.ibm.com>
Acked-by: Serge E. Hallyn <serue@us.ibm.com>
Tested-by: Matt Helsley <matthltc@us.ibm.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2008-10-20 08:52:34 -07:00
Matt Helsley 83224b0837 container freezer: add TIF_FREEZE flag to all architectures
This patch series introduces a cgroup subsystem that utilizes the swsusp
freezer to freeze a group of tasks.  It's immediately useful for batch job
management scripts.  It should also be useful in the future for
implementing container checkpoint/restart.

The freezer subsystem in the container filesystem defines a cgroup file
named freezer.state.  Reading freezer.state will return the current state
of the cgroup.  Writing "FROZEN" to the state file will freeze all tasks
in the cgroup.  Subsequently writing "RUNNING" will unfreeze the tasks in
the cgroup.

* Examples of usage :

   # mkdir /containers/freezer
   # mount -t cgroup -ofreezer freezer  /containers
   # mkdir /containers/0
   # echo $some_pid > /containers/0/tasks

to get status of the freezer subsystem :

   # cat /containers/0/freezer.state
   RUNNING

to freeze all tasks in the container :

   # echo FROZEN > /containers/0/freezer.state
   # cat /containers/0/freezer.state
   FREEZING
   # cat /containers/0/freezer.state
   FROZEN

to unfreeze all tasks in the container :

   # echo RUNNING > /containers/0/freezer.state
   # cat /containers/0/freezer.state
   RUNNING

This patch:

The first step in making the refrigerator() available to all
architectures, even for those without power management.

The purpose of such a change is to be able to use the refrigerator() in a
new control group subsystem which will implement a control group freezer.

[akpm@linux-foundation.org: fix sparc]
Signed-off-by: Cedric Le Goater <clg@fr.ibm.com>
Signed-off-by: Matt Helsley <matthltc@us.ibm.com>
Acked-by: Pavel Machek <pavel@suse.cz>
Acked-by: Serge E. Hallyn <serue@us.ibm.com>
Acked-by: Rafael J. Wysocki <rjw@sisk.pl>
Acked-by: Nigel Cunningham <nigel@tuxonice.net>
Tested-by: Matt Helsley <matthltc@us.ibm.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2008-10-20 08:52:33 -07:00
Martin Schwidefsky 0b59268285 [PATCH] remove unused ibcs2/PER_SVR4 in SET_PERSONALITY
The SET_PERSONALITY macro is always called with a second argument of 0.
Remove the ibcs argument and the various tests to set the PER_SVR4
personality.

Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
2008-10-16 15:40:05 +02:00
Robert Richter 25ad2913ca oprofile: more whitespace fixes
Signed-off-by: Robert Richter <robert.richter@amd.com>
2008-10-15 20:55:51 +02:00
Linus Torvalds 5723ff931a Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/sparc-2.6
* git://git.kernel.org/pub/scm/linux/kernel/git/davem/sparc-2.6:
  chmc: Mark %ver register inline asm with __volatile__
  sparc64: Add missing notify_cpu_starting() call.
  sparc32: fix build errors
2008-10-13 10:07:53 -07:00
Linus Torvalds 244dc4e54b Merge git://git.infradead.org/users/dwmw2/random-2.6
* git://git.infradead.org/users/dwmw2/random-2.6:
  Fix autoloading of MacBook Pro backlight driver.
  Automatic MODULE_ALIAS() for DMI match tables.
  Remove asm/a.out.h files for all architectures without a.out support.
  Introduce HAVE_AOUT symbol to remove hard-coded arch list for BINFMT_AOUT
  Remove redundant CONFIG_ARCH_SUPPORTS_AOUT
  S390: Update comments about why we don't use <asm-generic/statfs.h>
  SPARC: Use <asm-generic/statfs.h>
  PowerPC: Use <asm-generic/statfs.h>
  PARISC: Use <asm-generic/statfs.h>
  x86_64: Use <asm-generic/statfs.h>
  IA64: Use <asm-generic/statfs.h>
  ARM: Use <asm-generic/statfs.h>
  Make <asm-generic/statfs.h> suitable for 64-bit platforms.
  Define and use PCI_DEVICE_ID_MARVELL_88ALP01_CCIC for CAFÉ camera driver
  [MTD] [NAND] Define and use PCI_DEVICE_ID_MARVELL_88ALP01_NAND for CAFÉ
  Use PCI_DEVICE_ID_88ALP01 for CAFÉ chip, rather than PCI_DEVICE_ID_CAFE.
  EFS: Don't set f_fsid in statfs().
2008-10-13 09:59:14 -07:00
David Miller b70ac77185 serial: allow 8250 to be used on sparc
This requires three changes:

1) Remove !SPARC restriction in Kconfig.

2) Move Sparc specific serial drivers before 8250, so that serial
   console devices don't change names on us, even if 8250 finds
   devices.

3) Since the Sparc specific serial drivers try to use the
   same major/minor device namespace as 8250, some coordination
   is necessary.  Use the sunserial_*() layer routines to allocate
   minor number space within TTY_MAJOR when CONFIG_SPARC.

   This has no effect on other platforms.

Thanks to Josip Rodin for bringing up this issue and testing
plus debugging various revisions of this patch.

Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Alan Cox <alan@redhat.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2008-10-13 09:51:40 -07:00
David Woodhouse e758936e02 Merge branch 'master' of git://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux-2.6
Conflicts:

	include/asm-x86/statfs.h
2008-10-13 17:13:56 +01:00
Robert Reif 4245e59d12 sparc32: fix build errors
arch/sparc/kernel/sun4d_smp.c: In function ‘smp4d_callin’:
arch/sparc/kernel/sun4d_smp.c:101: error: implicit declaration of function ‘notify_cpu_starting’
arch/sparc/kernel/sun4m_smp.c: In function ‘smp4m_callin’:
arch/sparc/kernel/sun4m_smp.c:74: error: implicit declaration of function ‘notify_cpu_starting’

Signed-off-by: Robert Reif <reif@earthlink.net>
Signed-off-by: David S. Miller <davem@davemloft.net>
2008-10-12 23:55:45 -07:00
David S. Miller 56c5d900db Merge branch 'master' of master.kernel.org:/pub/scm/linux/kernel/git/torvalds/linux-2.6
Conflicts:

	sound/core/memalloc.c
2008-10-11 12:39:35 -07:00
Ingo Molnar 990d0f2ced Merge branches 'sched/devel', 'sched/cpu-hotplug', 'sched/cpusets' and 'sched/urgent' into sched/core 2008-10-08 11:31:02 +02:00
Robert Reif 6cf4a9243a sparc32: sun4m interrupt mask cleanup
Here is an updated version of a patch I wrote 6 years ago
http://marc.info/?l=linux-sparc&m=103939103607617&w=2
that simplifies interrupt mask lookup.  It's main purpose
is to add VME bus support but it's really a cleanup of the mask code.

Signed-off-by: Robert Reif <reif@earthlink.net>
Signed-off-by: David S. Miller <davem@davemloft.net>
2008-10-07 15:24:02 -07:00
David Brownell a1cd0464c6 sparc: arch/sparc/kernel/pmc.c -- extra #include?
I have no SPARC compiler handy to verify, but it looks like this
is another file that doesn't need <linux/miscdevices.h> ...

Signed-off-by: David S. Miller <davem@davemloft.net>
2008-09-21 00:28:26 -07:00
David S. Miller 778b1c65bf sparc32: Add more extensive documentation of sun4m interrupts.
Signed-off-by: David S. Miller <davem@davemloft.net>
2008-09-19 21:18:05 -07:00
David S. Miller e7913de928 sparc32: Kill irq_rcvreg from sun4m_irq.c
Unused.

Signed-off-by: David S. Miller <davem@davemloft.net>
2008-09-19 21:18:04 -07:00
David S. Miller c7e606a8f8 sparc32: Delete master_l10_limit.
It is only set, never used.

Signed-off-by: David S. Miller <davem@davemloft.net>
2008-09-19 21:18:03 -07:00
David S. Miller 8bd8deead7 sparc32: Use PROM device probing for sun4c timers.
Signed-off-by: David S. Miller <davem@davemloft.net>
2008-09-19 21:18:02 -07:00
David S. Miller 45bb5a7cbf sparc32: Use PROM device probing for sun4c interrupt register.
Signed-off-by: David S. Miller <davem@davemloft.net>
2008-09-19 21:18:01 -07:00
David S. Miller 5ff0d55f93 sparc32: Delete claim_ticker14().
No more users.

Signed-off-by: David S. Miller <davem@davemloft.net>
2008-09-19 21:18:01 -07:00
David S. Miller b218fa0e9c sparc32: Stop calling claim_ticker14() from sun4c_irq.c
Since the first argument is always NULL, the only side effect
is to disable the PROFILE_IRQ, so just do that directly.

Signed-off-by: David S. Miller <davem@davemloft.net>
2008-09-19 21:17:59 -07:00
David S. Miller 76954261ba sparc32: Kill clear_profile_irq btfixup entry.
Unused.

Signed-off-by: David S. Miller <davem@davemloft.net>
2008-09-19 21:17:59 -07:00
David S. Miller 1de937a536 sparc32: Call sun4m_clear_profile_irq() directly from sun4m_smp.c
This is the only use of the clear_profile_irq() btfixup entry,
which just eats up lots of dead space on other platform types.

A subsequent commit will delete the other implementations and
the btfixup entry as well.

Signed-off-by: David S. Miller <davem@davemloft.net>
2008-09-19 21:17:58 -07:00
David S. Miller a73554aedb sparc32: Remove #if 0'd code from sun4c_irq.c
Signed-off-by: David S. Miller <davem@davemloft.net>
2008-09-19 21:17:57 -07:00
David S. Miller f8376e933c sparc32: Remove some SMP ifdefs in sun4d_irq.c
Always do the sbus_tid[] handling.

Signed-off-by: David S. Miller <davem@davemloft.net>
2008-09-19 21:17:56 -07:00
David S. Miller f5f1085720 sparc32: Use PROM infrastructure for probing and mapping sun4d timers.
Signed-off-by: David S. Miller <davem@davemloft.net>
2008-09-19 21:17:56 -07:00
David S. Miller 69c010b245 sparc32: Use PROM device probing for sun4m irq registers.
Signed-off-by: David S. Miller <davem@davemloft.net>
2008-09-19 21:17:43 -07:00
David S. Miller 2e57572a50 Merge branch 'master' of master.kernel.org:/pub/scm/linux/kernel/git/davem/sparc-2.6
Conflicts:

	arch/sparc64/kernel/pci_psycho.c
2008-09-16 14:11:43 -07:00
David S. Miller 9b2e43ae4e sparc32: Use PROM device probing for sun4m timer registers.
Signed-off-by: David S. Miller <davem@davemloft.net>
2008-09-13 21:37:32 -07:00
David S. Miller 7d4ee289d1 sparc: Fix user_regset 'n' field values.
As noticed by Russell King, we were not setting this properly
to the number of entries, but rather the total size.

This results in the core dumping code allocating waayyyy too
much memory.

Signed-off-by: David S. Miller <davem@davemloft.net>
2008-09-12 15:55:44 -07:00
David S. Miller 3c50370103 sparc: Fix user_regset 'n' field values.
As noticed by Russell King, we were not setting this properly
to the number of entries, but rather the total size.

This results in the core dumping code allocating waayyyy too
much memory.

Signed-off-by: David S. Miller <davem@davemloft.net>
2008-09-12 15:01:31 -07:00
David S. Miller b539c46766 sparc64: Fix sparse warnings in fault.c
1) set_brkpt() is referenced by nothing and hasn't been used by anyone
   to my knowledge for many many years.  So just delete it.

2) add extern decl for do_sparc64_fault() in asm/pgtable_64.h

Signed-off-by: David S. Miller <davem@davemloft.net>
2008-09-12 00:10:32 -07:00
David S. Miller 7e0b1e6186 sparc64: Fix sparse warnings in visemul.c
1) edge8 tables should be static
2) add vis_emul() extern decl. to asm/visasm.h

Signed-off-by: David S. Miller <davem@davemloft.net>
2008-09-11 23:46:40 -07:00
David S. Miller b0f1e7962f sparc64: Define WANT_PAGE_VIRTUAL
As sparse warns, without this struct page pointer subtraction is
extremely expensive, and this is a pretty common operation in
fast paths.

With this define struct page becomes 64 bytes which makes for a
simple subtract and shift, instead of a costly divide or reciprocol
multiply.

Signed-off-by: David S. Miller <davem@davemloft.net>
2008-09-11 23:36:32 -07:00
David S. Miller 17f04fbb0f sysctl: Use header file for sysctl knob declarations on sparc.
This also takes care of a sparse warning as scons_pwroff's definition
point.

Signed-off-by: David S. Miller <davem@davemloft.net>
2008-09-11 23:33:53 -07:00