| Commit message (Collapse) | Author | Age |
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Signed-off-by: Jason Jin <Jason.jin@freescale.com>
Signed-off-by: Kumar Gala <galak@kernel.crashing.org>
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These functions should have been static, and inspection shows they
are no longer used. (We used to parse mem= but we now defer that
to early_param).
Signed-off-by: Milton Miller <miltonm@bga.com>
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
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Commit 9b09c6d909dfd8de96b99b9b9c808b94b0a71614 ("powerpc: Change the
default link address for pSeries zImage kernels") changed the
real-base value in the CHRP note added by addnote to the zImage from
12MB to 32MB. It turns out that this causes unnecessary extra reboots
on old 32-bit CHRP machines. This therefore adds a -r flag to addnote
to allow us to specify what real-base value it should put in the CHRP
note, and adjusts the wrapper script to pass -r c00000 to addnote when
making a zImage for a CHRP machine. Also, CHRP machines ignore the
RPA note, so we don't need to arrange for it to be the same as the
kernel's.
Signed-off-by: Paul Mackerras <paulus@samba.org>
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
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numa_enforce_memory_limit tried to be smart and only call lmb_end_of_DRAM
when a memory limit was set via mem= on the command line. However,
the early boot code will also limit memory added to the lmb system
when iommu=off is specified. When this happens, the page allocator
is given pages not in the linear mapping and this results in a fatal
data reference to the unmapped page.
Signed-off-by: Milton Miller <miltonm@bga.com>
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
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We used to assume that even numbered threads were the primary
threads, ie those that would be listed and started as a cpu from
open firmware. Replace a left over is even (% 2) check with a check
for it being a primary thread and update the comments.
Tested with a debug print on pseries, identical code found for cell.
Signed-off-by: Milton Miller <miltonm@bga.com>
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
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64 bit powerpc requires the kexec user space tools avoid overwriting
the static kernel image and translation hash table when choosing
where to put memory image data because it copies the data into place
using the kernels virtual memory system. Kexec userspace determines
these and other areas blocked by reading properties the kernel adds,
but does not filter these properties when creating the device tree
for the next kernel.
When the second kernel tries to add its values for these properties,
the export via /proc/device-tree is hidden by the pre-existing but
stale values from the flat tree. Kexec userspace reads the old
property, allocates the new kernel at the old kernel's end, and
gets rejected by the overlap check.
Search and remove these stale properties before adding the new values.
Signed-off-by: Milton Miller <miltonm@bga.com>
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
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There are no users of PPC_MERGE in tree so we can get rid of it.
It was a hold over from the arch/ppc days.
Signed-off-by: Kumar Gala <galak@kernel.crashing.org>
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
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There are two issues when we enable CONFIG_RELOCATABLE. The first is due
to the fact that phys_addr_t is now defined in linux/types.h. The second
is due to the fact that the DMA code changes expose memstart_addr to
prom_init.c
Signed-off-by: Kumar Gala <galak@kernel.crashing.org>
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
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This target is needed to build cuImages with an embedded ramdisk image.
Signed-off-by: Grant Likely <grant.likely@secretlab.ca>
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
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I noticed, when trying to use, e.g.,
node = find_node_by_prop_value(prev, "booleanprop", "", 0))
to search for all nodes with a certain boolean property, that memcmp()
returns garbage when comparing zero bytes. It should return zero.
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
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Adjust amount to reserve based on previous nodes for reserves spanning
multiple nodes. Check if the node active range is empty before attempting
to pass the reserve to bootmem. In practice the range shouldn't be empty,
but to be sure we check.
Signed-off-by: Jon Tollefson <kniht@linux.vnet.ibm.com>
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
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The issue is the SPU code is not holding the kernel mutex lock while
adding samples to the kernel buffer.
This patch creates per SPU buffers to hold the data. Data
is added to the buffers from in interrupt context. The data
is periodically pushed to the kernel buffer via a new Oprofile
function oprofile_put_buff(). The oprofile_put_buff() function
is called via a work queue enabling the funtion to acquire the
mutex lock.
The existing user controls for adjusting the per CPU buffer
size is used to control the size of the per SPU buffers.
Similarly, overflows of the SPU buffers are reported by
incrementing the per CPU buffer stats. This eliminates the
need to have architecture specific controls for the per SPU
buffers which is not acceptable to the OProfile user tool
maintainer.
The export of the oprofile add_event_entry() is removed as it
is no longer needed given this patch.
Note, this patch has not addressed the issue of indexing arrays
by the spu number. This still needs to be fixed as the spu
numbering is not guarenteed to be 0 to max_num_spus-1.
Signed-off-by: Carl Love <carll@us.ibm.com>
Signed-off-by: Maynard Johnson <maynardj@us.ibm.com>
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Acked-by: Acked-by: Robert Richter <robert.richter@amd.com>
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
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"unsigned int" speed cannot be negative, it's thus pointless
to test if it is.
Signed-off-by: Roel Kluin <roel.kluin@gmail.com>
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
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The pfn of the memory to be removed should be validated prior to
attempting to remove the memory. In cases where the probe of a
memory section fails during hotplug add, the pfn for the lmb may
not be valid.
Signed-off-by: Badari Pulavarty <pbadari@us.ibm.com>
Signed-off-by: Nathan Fontenot <nfont@austin.ibm.com>
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
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If the vmlinux binary in memory is larger than 4 MiB than it collides
with the initial boot code which is linked at 4 MiB in case of cuBoot.
If the the uncompressed image size (on disk size) is less than 4 MiB
then it would fit. The difference between those two sizes is the bss
section. In cuBoot we have the dtb embedded right after the data
section so it is very likely that the reset of the bss section (in
kernel's start up code) will overwrite the dtb blob. Therefore we
reallocate the dtb. Something similar is allready done to the initrd.
Signed-off-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
Acked-by: David Gibson <david@gibson.dropbear.id.au>
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
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MPC5200 needs to have pipelining disabled for ATA to work. MPC5200B does not.
So, for the latter, don't touch the original setting from the bootloader.
Signed-off-by: Wolfram Sang <w.sang@pengutronix.de>
Signed-off-by: Grant Likely <grant.likely@secretlab.ca>
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Current device trees do not have the device_type = soc property set
anymore. Fix up the cuImage bootwrapper fragment to still find the IMMR
nodes.
Signed-off-by: Grant Likely <grant.likely@secretlab.ca>
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This patch adds support for the GPIO functions of PPC40x and PPC44x
SOCs.
Signed-off-by: Steve Falco <sfalco@harris.com>
Acked-by: Stefan Roese <sr@denx.de>
Acked-by: Sean MacLennan <smaclennan@pikatech.com>
Signed-off-by: Josh Boyer <jwboyer@linux.vnet.ibm.com>
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Adds support for a HCU4 PPC405GPr based board from Netstal Maschinen AG.
Signed-off-by: Niklaus Giger <niklaus.giger@member.fsf.org>
Signed-off-by: Josh Boyer <jwboyer@linux.vnet.ibm.com>
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Add simple defconfig for the AMCC PowerPC 405EZ Acadia evaluation board
Signed-off-by: Josh Boyer <jwboyer@linux.vnet.ibm.com>
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This adds a cuboot wrapper for the AMCC PowerPC 405EZ Acadia board. The
clocking code is derived from U-Boot, originally written by Stefan Roese.
Signed-off-by: Josh Boyer <jwboyer@linux.ibm.com>
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This adds a common board file for almost all of the "simple" PowerPC 40x
boards that exist today. This is intended to be a single place to add
support for boards that do not differ in platform support from most of the
evaluation boards that are used as reference platforms. Boards that have
specific requirements or custom hardware setup should still have their own
board.c file.
The first board ported to this is the AMCC PowerPC 405EZ Acadia board.
Signed-off-by: Josh Boyer <jwboyer@linux.vnet.ibm.com>
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This adds the AMCC PowerPC 405EZ chip to the cputable
Signed-off-by: Josh Boyer <jwboyer@linux.vnet.ibm.com>
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Add the base DTS for the AMCC PowerPC 405EZ Acadia evalution board.
In addition to some of the normal PPC 40x peripherals, the Acadia
board has:
- 64 MiB PSRAM
- NOR and NAND flash
- Two USB 1.1 host ports
- Two CAN 2.0 ports
- ADC and DAC connectors
- LCD display
This adds the basic platform support to build from.
Signed-off-by: Josh Boyer <jwboyer@linux.vnet.ibm.com>
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This patch adds a comment to clarify why atomic_dec_if_positive is being used
to decrement gang's aff_sched_count on SPU context unbind.
Signed-off-by: Andre Detsch <adetsch@br.ibm.com>
Signed-off-by: Jeremy Kerr <jk@ozlabs.org>
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This patch improves redability of the code responsible for trying to find
a node with enough SPUs not committed to other affinity gangs.
An additional check is also added, to avoid taking into account gangs that
have no SPU affinity.
Signed-off-by: Andre Detsch <adetsch@br.ibm.com>
Signed-off-by: Jeremy Kerr <jk@ozlabs.org>
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No need to zero the entire buffer, just the head and tail indices.
Signed-off-by: Jeremy Kerr <jk@ozlabs.org>
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With most file readers (eg cat, dd), reading a context's regs file will
result in two reads: the first to read the data, and the second to
return EOF. Because each read performs a spu_acquire_saved, we end up
descheduling and re-scheduling the context twice.
This change does a simple check to see if we'd return EOF before
calling spu_acquire_saved(), saving the extra schedule operation.
Signed-off-by: Jeremy Kerr <jk@ozlabs.org>
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Currently, read() on the sputrace log will block until the read buffer
is full. This makes it difficult to retrieve the end of the buffer, as
the user will need to read with the right-sized buffer.
In a similar method as 91553a1b5e0df006a3573a88d98ee7cd48a3818a, this
change makes the switch_log return if there has already been data
read.
Signed-off-by: Jeremy Kerr <jk@ozlabs.org>
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openers
Currently, we use ctx->mapping_lock and ctx->switch_log->lock for the
context switch log. The mapping lock only prevents concurrent open()s,
so we require the switch_lock->lock for reads.
Since writes to the switch log buffer occur on context switches, we're
better off synchronising with the state_mutex, which is held during a
switch. Since we're serialised througout the buffer reads and writes,
we can use the state mutex to protect open and release too, and
can now kfree() the log buffer on release. This allows us to perform
the switch log notify without taking any extra locks.
Because the buffer is only present while the file is open, we can use
it to prevent multiple simultaneous openers.
Signed-off-by: Jeremy Kerr <jk@ozlabs.org>
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Currently, read() on the sputrace buffer will only return data when
the user buffer is exhausted. This may mean that we never see the
end of the event log, unless we read() with exactly the right-sized
buffer.
This change makes sputrace_read not block if we have data ready to
return.
Signed-off-by: Jeremy Kerr <jk@ozlabs.org>
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Currently, sputrace will start logging to the event buffer before the
log buffer has been open()ed. This results in a heap of "lost samples"
warnings if the sputrace file hasn't yet been opened.
Since the buffer is reset on open() anyway, there's no need to enable
logging when no-one has opened the log.
Because open clears the log, make it return EBUSY for mutliple open
calls.
Signed-off-by: Jeremy Kerr <jk@ozlabs.org>
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The entire file of ftrace.c in the arch code needs to be marked
as notrace. It is much cleaner to do this from the Makefile with
CFLAGS_REMOVE_ftrace.o.
[ powerpc already had this in its Makefile. ]
Signed-off-by: Steven Rostedt <srostedt@redhat.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
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The arch dependent function ftrace_mcount_set was only used by the daemon
start up code. This patch removes it.
Signed-off-by: Steven Rostedt <srostedt@redhat.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
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The ftrace daemon is complex and can cause nasty races if something goes
wrong. Since it affects all of the kernel, this patch disables dynamic
ftrace from any arch that depends on the daemon. Until the archs are
ported over to the new MCOUNT_RECORD method, I am disabling dynamic
ftrace from them.
Note: I am leaving in the arch/<arch>/kernel/ftrace.c code alone since
that can be used when the arch is ported to MCOUNT_RECORD. To port
the arch to MCOUNT_RECORD, the scripts/recordmcount.pl needs to be
updated. I will make that easier to do for 2.6.29. For 28, we will keep
the archs disabled.
Signed-off-by: Steven Rostedt <srostedt@redhat.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
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Due to confusion between the ftrace infrastructure and the gcc profiling
tracer "ftrace", this patch renames the config options from FTRACE to
FUNCTION_TRACER. The other two names that are offspring from FTRACE
DYNAMIC_FTRACE and FTRACE_MCOUNT_RECORD will stay the same.
This patch was generated mostly by script, and partially by hand.
Signed-off-by: Steven Rostedt <srostedt@redhat.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
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Conflicts:
init/main.c
kernel/module.c
scripts/bootgraph.pl
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__FUNCTION__ is gcc-specific, use __func__
Signed-off-by: Harvey Harrison <harvey.harrison@gmail.com>
Acked-by: Randy Dunlap <randy.dunlap@oracle.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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git://git.kernel.org/pub/scm/linux/kernel/git/jbarnes/pci-2.6
* 'linux-next' of git://git.kernel.org/pub/scm/linux/kernel/git/jbarnes/pci-2.6: (41 commits)
PCI: fix pci_ioremap_bar() on s390
PCI: fix AER capability check
PCI: use pci_find_ext_capability everywhere
PCI: remove #ifdef DEBUG around dev_dbg call
PCI hotplug: fix get_##name return value problem
PCI: document the pcie_aspm kernel parameter
PCI: introduce an pci_ioremap(pdev, barnr) function
powerpc/PCI: Add legacy PCI access via sysfs
PCI: Add ability to mmap legacy_io on some platforms
PCI: probing debug message uniformization
PCI: support PCIe ARI capability
PCI: centralize the capabilities code in probe.c
PCI: centralize the capabilities code in pci-sysfs.c
PCI: fix 64-vbit prefetchable memory resource BARs
PCI: replace cfg space size (256/4096) by macros.
PCI: use resource_size() everywhere.
PCI: use same arg names in PCI_VDEVICE comment
PCI hotplug: rpaphp: make debug var unique
PCI: use %pF instead of print_fn_descriptor_symbol() in quirks.c
PCI: fix hotplug get_##name return value problem
...
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This patch adds support for legacy_io and legacy_mem files in
bus class directories in sysfs for powerpc
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Signed-off-by: Jesse Barnes <jbarnes@virtuousgeek.org>
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git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip
* 'tracing-v28-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip: (131 commits)
tracing/fastboot: improve help text
tracing/stacktrace: improve help text
tracing/fastboot: fix initcalls disposition in bootgraph.pl
tracing/fastboot: fix bootgraph.pl initcall name regexp
tracing/fastboot: fix issues and improve output of bootgraph.pl
tracepoints: synchronize unregister static inline
tracepoints: tracepoint_synchronize_unregister()
ftrace: make ftrace_test_p6nop disassembler-friendly
markers: fix synchronize marker unregister static inline
tracing/fastboot: add better resolution to initcall debug/tracing
trace: add build-time check to avoid overrunning hex buffer
ftrace: fix hex output mode of ftrace
tracing/fastboot: fix initcalls disposition in bootgraph.pl
tracing/fastboot: fix printk format typo in boot tracer
ftrace: return an error when setting a nonexistent tracer
ftrace: make some tracers reentrant
ring-buffer: make reentrant
ring-buffer: move page indexes into page headers
tracing/fastboot: only trace non-module initcalls
ftrace: move pc counter in irqtrace
...
Manually fix conflicts:
- init/main.c: initcall tracing
- kernel/module.c: verbose level vs tracepoints
- scripts/bootgraph.pl: fallout from cherry-picking commits.
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We need a marker_synchronize_unregister() before the end of exit() to make sure
every probe callers have exited the non preemptible section and thus are not
executing the probe code anymore.
Signed-off-by: Mathieu Desnoyers <mathieu.desnoyers@polymtl.ca>
Acked-by: Jeremy Kerr <jk@ozlabs.org>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
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git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip
* 'core-fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip:
m32r: fix build due to notify_cpu_starting() change
powerpc: fix linux-next build failure
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Today's linux-next build (powerpc allyesconfig) failed like this:
In file included from arch/powerpc/include/asm/mmu-hash64.h:17,
from arch/powerpc/include/asm/mmu.h:8,
from arch/powerpc/include/asm/pgtable.h:8,
from arch/powerpc/mm/slb.c:20:
arch/powerpc/include/asm/page.h:76: error: expected '=', ',', ';', 'asm' or '__attribute__' before 'memstart_addr'
arch/powerpc/include/asm/page.h:77: error: expected '=', ',', ';', 'asm' or '__attribute__' before 'kernstart_addr'
Caused by commit 600715dcdf567c86f8b2c6173fcfb4b873e25a19 ("generic: add
phys_addr_t for holding physical addresses") from the tip-core tree.
This only fails if CONFIG_RELOCATABLE is set.
So include that instead of asm/types.h in asm/page.h for
the CONFIG_RELOCATABLE case.
Signed-off-by: Stephen Rothwell <sfr@canb.auug.org.au>
Cc: ppc-dev <linuxppc-dev@ozlabs.org>
Cc: Andrew Morton <akpm@linux-foundation.org>
Cc: Jeremy Fitzhardinge <jeremy@goop.org>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
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git://git.kernel.org/pub/scm/linux/kernel/git/tiwai/sound-2.6
* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tiwai/sound-2.6:
ALSA: ASoC: OMAP: Fix DSP DAI format in McBSP DAI driver
go7007 - Add missing dependency on sound subsystem
ALSA: ps3: Add support for SPDIF/HDMI passthru
ps3: Add passthru support for non-audio streams
ps3: Add ps3av_audio_mute_analog()
ALSA: misc typo fixes
sound: add missing pcm kernel-doc
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'topic/staging-fixes' into for-linus
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Add support for the channel status bit setting so that non-PCM
data stream can be sent (i.e. pass-through) via SPDIF/HDMI.
Signed-off-by: Masakazu Mokuno <mokuno@sm.sony.co.jp>
Acked-by: Geert Uytterhoeven <Geert.Uytterhoeven@sonycom.com>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
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