ZONE_DMA is required for some drivers subsystem, such as USB/SCSI.
Signed-off-by: Aubrey Li <aubrey.li@analog.com>
Signed-off-by: Bryan Wu <bryan.wu@analog.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
First thing mm.h does is including sched.h solely for can_do_mlock() inline
function which has "current" dereference inside. By dealing with can_do_mlock()
mm.h can be detached from sched.h which is good. See below, why.
This patch
a) removes unconditional inclusion of sched.h from mm.h
b) makes can_do_mlock() normal function in mm/mlock.c
c) exports can_do_mlock() to not break compilation
d) adds sched.h inclusions back to files that were getting it indirectly.
e) adds less bloated headers to some files (asm/signal.h, jiffies.h) that were
getting them indirectly
Net result is:
a) mm.h users would get less code to open, read, preprocess, parse, ... if
they don't need sched.h
b) sched.h stops being dependency for significant number of files:
on x86_64 allmodconfig touching sched.h results in recompile of 4083 files,
after patch it's only 3744 (-8.3%).
Cross-compile tested on
all arm defconfigs, all mips defconfigs, all powerpc defconfigs,
alpha alpha-up
arm
i386 i386-up i386-defconfig i386-allnoconfig
ia64 ia64-up
m68k
mips
parisc parisc-up
powerpc powerpc-up
s390 s390-up
sparc sparc-up
sparc64 sparc64-up
um-x86_64
x86_64 x86_64-up x86_64-defconfig x86_64-allnoconfig
as well as my two usual configs.
Signed-off-by: Alexey Dobriyan <adobriyan@gmail.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* 'master' of git://git.kernel.org/pub/scm/linux/kernel/git/paulus/powerpc: (32 commits)
[POWERPC] Remove build warnings in windfarm_core
[POWERPC] Pass per-file CFLAGs for platform specific op codes
[POWERPC] Correct #endif comment
[POWERPC] Fix ppc_rtas_progress_show()
[POWERPC] Fix sed command lines for zlib source construction
[POWERPC] Specify GNUTARGET on $(AR) invocations
[POWERPC] Make sure device node type/name is not NULL on hot-added nodes
[POWERPC] Small fixes for the Ebony device tree
[POWERPC] Fix warning on UP
[POWERPC] cell_defconfig: Disable cpufreq and pmi
[POWERPC] Fix IO space on PCI buses created from of_platform
[POWERPC] Add spinlock to request_phb_iospace()
[POWERPC] Fix make rules for treeImage.initrd
[POWERPC] Remove warning in mpic.c
[POWERPC] Update pasemi_defconfig
[POWERPC] pasemi: CONFIG_GENERIC_TBSYNC no longer needed
[POWERPC] Update iseries_defconfig
[POWERPC] Wire up some more syscalls
[POWERPC] Fix bug adding properties with flatdevtree.c's ft_set_prop()
[POWERPC] Remove fixup_bigphys_addr() for arch/powerpc to avoid link error
...
This reverts commit c8fdd24725.
It turns out the kernel was correct, and the gcc complaint was a gcc
bug. The preferred stack boundary is expressed not in bytes, but in the
the log2() of the preferred boundary, so "-mpreferred-stack-boundary=2"
is in fact exactly what we want, but a gcc that is compiled for x86-64
will consider it an error (because the 64-bit calling sequence says that
the stack should be 16-byte aligned) even if we are then using "-m32" to
generate 32-bit code.
Noted-by: Mikulas Patocka <mikulas@artax.karlin.mff.cuni.cz>
Cc: Jan Hubicka <jh@suse.cz>
Acked-by: Andi Kleen <ak@suse.de>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
No other architecture calls check_pgt_cache() from within flush_tlb_mm(),
and i386 is already calling check_pgt_cache() from the usual places,
tlb_finish_mmu() and cpu_idle() (the latter being odd, but not unusual).
flush_tlb_mm() has no business to be freeing pages: remove that line, which
sneaked in with slub's i386 support.
Signed-off-by: Hugh Dickins <hugh@veritas.com>
Cc: Andi Kleen <ak@suse.de>
Acked-by: Christoph Lameter <clameter@sgi.com>
Acked-by: William Lee Irwin III <wli@holomorphy.com>
Cc: David Miller <davem@davemloft.net>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
WARNING: arch/x86_64/kernel/built-in.o - Section mismatch: reference to
.init.text:mtrr_bp_init from .text between 'id entify_cpu' (at offset 0x6571)
and 'IRQ0x20_interrupt'
It's because identify_cpu() which is __cpuinit calls mtrr_bp_init() which is
__init(). __cpuinit() expands to nothing if CONFIG_HOTPLUG_CPU=y and so the
call is illegal.
Signed-off-by: Bernhard Walle <bwalle@suse.de>
Cc: Andi Kleen <ak@suse.de>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Currently we have a maze of configuration variables that determine the
maximum slab size. Worst of all it seems to vary between SLAB and SLUB.
So define a common maximum size for kmalloc. For conveniences sake we use
the maximum size ever supported which is 32 MB. We limit the maximum size
to a lower limit if MAX_ORDER does not allow such large allocations.
For many architectures this patch will have the effect of adding large
kmalloc sizes. x86_64 adds 5 new kmalloc sizes. So a small amount of
memory will be needed for these caches (contemporary SLAB has dynamically
sizeable node and cpu structure so the waste is less than in the past)
Most architectures will then be able to allocate object with sizes up to
MAX_ORDER. We have had repeated breakage (in fact whenever we doubled the
number of supported processors) on IA64 because one or the other struct
grew beyond what the slab allocators supported. This will avoid future
issues and f.e. avoid fixes for 2k and 4k cpu support.
CONFIG_LARGE_ALLOCS is no longer necessary so drop it.
It fixes sparc64 with SLAB.
Signed-off-by: Christoph Lameter <clameter@sgi.com>
Signed-off-by: "David S. Miller" <davem@davemloft.net>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
SLAB_CTOR_CONSTRUCTOR is always specified. No point in checking it.
Signed-off-by: Christoph Lameter <clameter@sgi.com>
Cc: David Howells <dhowells@redhat.com>
Cc: Jens Axboe <jens.axboe@oracle.com>
Cc: Steven French <sfrench@us.ibm.com>
Cc: Michael Halcrow <mhalcrow@us.ibm.com>
Cc: OGAWA Hirofumi <hirofumi@mail.parknet.co.jp>
Cc: Miklos Szeredi <miklos@szeredi.hu>
Cc: Steven Whitehouse <swhiteho@redhat.com>
Cc: Roman Zippel <zippel@linux-m68k.org>
Cc: David Woodhouse <dwmw2@infradead.org>
Cc: Dave Kleikamp <shaggy@austin.ibm.com>
Cc: Trond Myklebust <trond.myklebust@fys.uio.no>
Cc: "J. Bruce Fields" <bfields@fieldses.org>
Cc: Anton Altaparmakov <aia21@cantab.net>
Cc: Mark Fasheh <mark.fasheh@oracle.com>
Cc: Paul Mackerras <paulus@samba.org>
Cc: Christoph Hellwig <hch@lst.de>
Cc: Jan Kara <jack@ucw.cz>
Cc: David Chinner <dgc@sgi.com>
Cc: "David S. Miller" <davem@davemloft.net>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
As a result of compiling all of the wrapper files for every platform
now, the kernel build can fail for toolchains that don't support various
op codes by default. An example of this building a 7xx platform with
the ELD4.0 toolchain, is below:
/tmp/ccYjhJoL.s: Assembler messages:
/tmp/ccYjhJoL.s:42: Error: Unrecognized opcode: `mtdcr'
/tmp/ccYjhJoL.s:43: Error: Unrecognized opcode: `mfdcr'
make[1]: *** [arch/powerpc/boot/44x.o] Error 1
The following patch introduces additional CFLAGS for the 4xx specific
files and fixes the kernel compile.
Signed-off-by: Josh Boyer <jwboyer@linux.vnet.ibm.com>
Signed-off-by: Paul Mackerras <paulus@samba.org>
Fix up comment on two #endifs to match their #ifs.
Signed-off-by: Jon Tollefson <kniht@linux.vnet.ibm.com>
----
hash_utils_64.c | 4 ++--
1 files changed, 2 insertions(+), 2 deletions(-)
Signed-off-by: Paul Mackerras <paulus@samba.org>
Fixes the warning
arch/powerpc/kernel/rtas-proc.c: In function 'ppc_rtas_progress_show':
arch/powerpc/kernel/rtas-proc.c:382: warning: the address of
'progress_led' will always evaluate as 'true'
by fixing the code to do what it presumably is meant to do.
Signed-off-by: Segher Boessenkool <segher@kernel.crashing.org>
Signed-off-by: Paul Mackerras <paulus@samba.org>
Not every sed understands \+ so use the more portable * instead.
Signed-off-by: Segher Boessenkool <segher@kernel.crashing.org>
Signed-off-by: Paul Mackerras <paulus@samba.org>
Without this, some versions of GNU ar fail to create
an archive index if the object files it is packing
together are of a different object format than ar's
default format (for example, binutils compiled to
default to 64-bit, with 32-bit objects).
Signed-off-by: Segher Boessenkool <segher@kernel.crashing.org>
Signed-off-by: Paul Mackerras <paulus@samba.org>
Our device-tree unflattening code makes sure the name and type fields
of a device-node are not NULL. However, the code for dynamically
adding devices nodes which is used for pSeries hotplug for example
didn't do it, potentially causing crashes in some code that assume it
can always do things like strcmp on those.
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Signed-off-by: Paul Mackerras <paulus@samba.org>
This patch corrects a number of minor errors in the Ebony device tree:
- Missing (given as 0) cache sizes are added to the CPU node
- device_type properties are removed from nodes which don't
have a reasonably well defined device_type binding. This does require
a very small code change to locate the busses to be probed for
of_platform devices by 'compatible' instead of 'device_type'.
- A node is added for the SRAM controller
- The unit address of the small-flash node is adjusted to
correctly reflect the reg property.
- device_type values for the MAL and ZMII are updated to
reflected more up-to-date versions of the binding.
- An incorrect offset in the partition map for the large-flash
node is corrected.
- Some redundant values, already commented out are removed
entirely.
Signed-off-by: David Gibson <david@gibson.dropbear.id.au>
Signed-off-by: Paul Mackerras <paulus@samba.org>
arch/powerpc/platforms/pseries/pseries.h:24: warning: return type defaults to 'int'
arch/powerpc/platforms/pseries/pseries.h:25: warning: return type defaults to 'int'
arch/powerpc/platforms/pseries/pseries.h:24: warning: control reaches end of non-void function
arch/powerpc/platforms/pseries/pseries.h:25: warning: control reaches end of non-void function
Signed-off-by: Stephen Rothwell <sfr@canb.auug.org.au>
Signed-off-by: Paul Mackerras <paulus@samba.org>
Cpufreq using pmi is broken by a dependency issue, that
will be fixed in a seperate patch.
Bare-metal cpufreq is broken by hardware limitations.
As it was the only user, pmi is disabled as well.
Signed-off-by: Christian Krafft <krafft@de.ibm.com>
Signed-off-by: Paul Mackerras <paulus@samba.org>
This changes the way of_platform_pci creates PCI host bridges such
that it uses request_phb_iospace() for mapping the IO ports, instead
of using the dynamic hotplug stuff. That guarantees the IO space
stays within the 2GB limit and thus doesn't break half of the legacy
drivers around.
Fixes a couple of warnings due to missing IO space while at it.
This patch is a temporary workaround for 2.6.22 before a more complete
rewrite of IO mappings is merged in 2.6.23
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Signed-off-by: Paul Mackerras <paulus@samba.org>
request_phb_iospace() can be called from different CPUs at init
time (at least with my next patch) and thus needs a spinlock.
As for the next patch, this is a temporary workaround for 2.6.22
issues until my rewrite of IO mappings is ready (for 2.6.23)
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Signed-off-by: Paul Mackerras <paulus@samba.org>
At present attempting to build treeImage.initrd.* boot images will
fail, because make will select the treeImage.% rule which also matches
instead of the correct and more specific treeImage.initrd.% rule.
This patch corrects the problem by listing the more specific rule
first.
Signed-off-by: David Gibson <david@gibson.dropbear.id.au>
Signed-off-by: Paul Mackerras <paulus@samba.org>
arch/powerpc/sysdev/mpic.c: In function 'mpic_request_ipis':
arch/powerpc/sysdev/mpic.c:1445: warning: ignoring return value of 'request_irq', declared with attribute warn_unused_result
Signed-off-by: Olof Johansson <olof@lixom.net>
Signed-off-by: Paul Mackerras <paulus@samba.org>
Update pasemi_defconfig, add new relevant drivers. Take out
CONFIG_PPC_PSERIES, it should't have been enabled in the first place.
Signed-off-by: Olof Johansson <olof@lixom.net>
Signed-off-by: Paul Mackerras <paulus@samba.org>
Current kernel implements proper TB sync, no need to keep GENERIC_TBSYNC
enabled.
Signed-off-by: Olof Johansson <olof@lixom.net>
Signed-off-by: Paul Mackerras <paulus@samba.org>
ft_set_prop() from flatdevtree.c in the zImage wrapper will either
replace an existing property in the flat device tree, or add a new
property definiion if the given property isn't present.
However, when adding properties, it adds the property definition
immediately before the node's END_NODE tag, potentially after any
subnode definitions for the node. This confuses the kernel flat tree
parser in prom.c which assumes that all property definitions for a
node come before all subnode definitions.
This patch corrects ft_set_prop() so that it adds new properties
before the first subnode, instead of before the END_NODE tag.
Signed-off-by: David Gibson <david@gibson.dropbear.id.au>
Acked-by: Scott Wood <scottwood@freescale.com>
Acked-by: Mark A. Greer <mgreer@mvista.com>
Signed-off-by: Paul Mackerras <paulus@samba.org>
Use a completion instead of abusing a semaphore for hypervisor event
completion in viopath.
Signed-off-by: Christoph Hellwig <hch@lst.de>
Acked-by: Stephen Rothwell <sfr@canb.auug.org.au>
Signed-off-by: Paul Mackerras <paulus@samba.org>
An allmodconfig on the current powerpc tree yields:
arch/powerpc/platforms/44x/Kconfig:41:warning: 'select' used by
config symbol '440GP' refers to undefined symbol 'IBM_NEW_EMAC_ZMII'
Hide the select until the driver exists.
Signed-off-by: Tony Breeds <tony@bakeyournoodle.com>
Signed-off-by: Paul Mackerras <paulus@samba.org>
Remove explicit phandles and move to using references that autogenerate the
phandles when needed.
Signed-off-by: Kumar Gala <galak@kernel.crashing.org>
Adds the MCC2 device to the 826x device_list and fixed MCC1/MCC2 entries
in all other PQ2 processors.
Signed-off-by: Morten Banzon <morten.banzon@ericsson.com>
Cc: Paul Mackerras <paulus@samba.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Kumar Gala <galak@kernel.crashing.org>
Adding memory-controller and l2-cache-controller entries to be used by EDAC
as of_devices for MPC8541 CDS, MPC8544 DS, MPC8555 CDS, and MPC8568 MDS.
Signed-off-by: Kumar Gala <galak@kernel.crashing.org>
Adding memory-controller and l2-cache-controller entries to be used by EDAC
as of_devices for MPC8540 ADS, MPC8548 CDS, and MPC8560 ADS.
Also fixed up the size of the PCI node on MPC8560 ADS.
Signed-off-by: Dave Jiang <djiang@mvista.com>
Signed-off-by: Kumar Gala <galak@kernel.crashing.org>
When an rheap is created, the caller can specify the alignment to use. In
rh_alloc_align(), if a free block is found that is the exact size needed
(including extra space for alignment), that configured alignment value is not
used to align the pointer. Instead, the default alignment is used. If the
default alignment is smaller than the configured alignment, then the returned
value will not be aligned correctly.
Signed-off-by: Timur Tabi <timur@freescale.com>
Signed-off-by: Kumar Gala <galak@kernel.crashing.org>
We get the following warnings in various ARCH=powerpc builds:
WARNING: "ee_restarts" [arch/powerpc/kernel/built-in] is COMMON symbol
WARNING: "fee_restarts" [arch/powerpc/kernel/built-in] is COMMON symbol
WARNING: "htab_hash_searches" [arch/powerpc/mm/built-in] is COMMON symbol
WARNING: "next_slot" [arch/powerpc/mm/built-in] is COMMON symbol
WARNING: "mmu_hash_lock" [arch/powerpc/mm/built-in] is COMMON symbol
WARNING: "primary_pteg_full" [arch/powerpc/mm/built-in] is COMMON symbol
WARNING: "global_dbcr0" [arch/powerpc/kernel/built-in] is COMMON symbol
Switch to moving local symbols (except mmu_hash_lock which is global) and
space directive instead.
Signed-off-by: Kumar Gala <galak@kernel.crashing.org>
Remove CPU_FTR_NEED_COHERENT for MPC7448 (and single-core MPC86xx).
This prevents needlessly setting M=1 when not SMP.
Signed-off-by: James.Yang <James.Yang@freescale.com>
Acked-by: Jon Loeliger <jdl@freescale.com>
Signed-off-by: Kumar Gala <galak@kernel.crashing.org>
Get rid of the notifier list and call the kprobes code directly
if compiled in. This mirrors the changes that recently went
into powerpc, s390 and sparc64.
Signed-off-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Tony Luck <tony.luck@intel.com>
Hypervisor interfaces need to be negotiated in order to use
some API calls reliably. So add a small set of interfaces
to request API versions and query current settings.
This allows us to fix some bugs in the hypervisor console:
1) If we can negotiate API group CORE of at least major 1
minor 1 we can use con_read and con_write which can improve
console performance quite a bit.
2) When we do a console write request, we should hold the
spinlock around the whole request, not a byte at a time.
What would happen is that it's easy for output from
different cpus to get mixed with each other.
3) Use consistent udelay() based polling, udelay(1) each
loop with a limit of 1000 polls to handle stuck hypervisor
console.
Signed-off-by: David S. Miller <davem@davemloft.net>
__NR_syscall_max is done in x86_64 asm-offsets; do an equivalent in
uml kern_constants.h
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
Acked-by: Jeff Dike <jdike@addtoit.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
