27 Jul, 2011
4 commits
-
After changing all consumers of atomics to include , we
ran into some compile time errors due to this dependency chain:linux/atomic.h
-> asm/atomic.h
-> asm-generic/atomic-long.hwhere atomic-long.h could use funcs defined later in linux/atomic.h
without a prototype. This patches moves the code that includes
asm-generic/atomic*.h to linux/atomic.h.Archs that need need to select
CONFIG_GENERIC_ATOMIC64 from now on (some of them used to include it
unconditionally).Compile tested on i386 and x86_64 with allnoconfig.
Signed-off-by: Arun Sharma
Cc: Eric Dumazet
Cc: Ingo Molnar
Cc: David Miller
Acked-by: Mike Frysinger
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds -
This is in preparation for more generic atomic primitives based on
__atomic_add_unless.Signed-off-by: Arun Sharma
Signed-off-by: Hans-Christian Egtvedt
Reviewed-by: Eric Dumazet
Cc: Ingo Molnar
Cc: David Miller
Acked-by: Mike Frysinger
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds -
This allows us to move duplicated code in
(atomic_inc_not_zero() for now) toSigned-off-by: Arun Sharma
Reviewed-by: Eric Dumazet
Cc: Ingo Molnar
Cc: David Miller
Cc: Eric Dumazet
Acked-by: Mike Frysinger
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds -
[ poleg@redhat.com: no need to declare show_regs() in ptrace.h, sched.h does this ]
Signed-off-by: Mike Frysinger
Cc: Tejun Heo
Signed-off-by: Oleg Nesterov
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds
23 Jul, 2011
1 commit
-
This patch moves the in-tree architectures that were using the 'generic'
delay.h over to using the header file in asm-generic.This is not done using the generic-y mechanism as none of these arch's
have started using that mechanism yet. This is a trivial change to make
later when the arch begins using generic-y.Note the subtle change to the avr32 and SH architectures where the argument
to __const_udelay was previously using the rounded down constant value
instead of the rounded up value.Signed-off-by: Jonas Bonn
Acked-by: Arnd Bergmann
Acked-by: Hans-Christian Egtvedt
14 Jun, 2011
1 commit
-
The address limit is already set in flush_old_exec() so this
set_fs(USER_DS) is redundant.Signed-off-by: Mathias Krause
Signed-off-by: Hans-Christian Egtvedt
29 May, 2011
2 commits
-
* setns:
ns: Wire up the setns system callDone as a merge to make it easier to fix up conflicts in arm due to
addition of sendmmsg system call -
32bit and 64bit on x86 are tested and working. The rest I have looked
at closely and I can't find any problems.setns is an easy system call to wire up. It just takes two ints so I
don't expect any weird architecture porting problems.While doing this I have noticed that we have some architectures that are
very slow to get new system calls. cris seems to be the slowest where
the last system calls wired up were preadv and pwritev. avr32 is weird
in that recvmmsg was wired up but never declared in unistd.h. frv is
behind with perf_event_open being the last syscall wired up. On h8300
the last system call wired up was epoll_wait. On m32r the last system
call wired up was fallocate. mn10300 has recvmmsg as the last system
call wired up. The rest seem to at least have syncfs wired up which was
new in the 2.6.39.v2: Most of the architecture support added by Daniel Lezcano
v3: ported to v2.6.36-rc4 by: Eric W. Biederman
v4: Moved wiring up of the system call to another patch
v5: ported to v2.6.39-rc6
v6: rebased onto parisc-next and net-next to avoid syscall conflicts.
v7: ported to Linus's latest post 2.6.39 tree.> arch/blackfin/include/asm/unistd.h | 3 ++-
> arch/blackfin/mach-common/entry.S | 1 +
Acked-by: Mike FrysingerOh - ia64 wiring looks good.
Acked-by: Tony LuckSigned-off-by: Eric W. Biederman
Signed-off-by: Linus Torvalds
27 May, 2011
1 commit
-
The style that we normally use in asm-generic is to test the macro itself
for existence, so in asm-generic, do:#ifndef find_next_zero_bit_le
extern unsigned long find_next_zero_bit_le(const void *addr,
unsigned long size, unsigned long offset);
#endifand in the architectures, write
static inline unsigned long find_next_zero_bit_le(const void *addr,
unsigned long size, unsigned long offset)
#define find_next_zero_bit_le find_next_zero_bit_leThis adds the #define for each of the optimized find bitops in the
architectures.Suggested-by: Arnd Bergmann
Signed-off-by: Akinobu Mita
Acked-by: Hans-Christian Egtvedt
Acked-by: Russell King
Acked-by: Greg Ungerer
Cc: Martin Schwidefsky
Cc: Heiko Carstens
Acked-by: Geert Uytterhoeven
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds
13 Apr, 2011
1 commit
-
The ATAG_BOARDINFO is intended to hand over the information
bd->bi_board_number from u-boot to the kernel.This piece of information can be used to implement some kind of board
identification while booting the kernel. Therefore it is placed in .initdata
section and can be accessed via the new symbol board_number only while
initializing the kernel.Signed-off-by: Andreas Bießmann
Signed-off-by: Hans-Christian Egtvedt
24 Mar, 2011
3 commits
-
minix bit operations are only used by minix filesystem and useless by
other modules. Because byte order of inode and block bitmaps is different
on each architecture like below:m68k:
big-endian 16bit indexed bitmapsh8300, microblaze, s390, sparc, m68knommu:
big-endian 32 or 64bit indexed bitmapsm32r, mips, sh, xtensa:
big-endian 32 or 64bit indexed bitmaps for big-endian mode
little-endian bitmaps for little-endian modeOthers:
little-endian bitmapsIn order to move minix bit operations from asm/bitops.h to architecture
independent code in minix filesystem, this provides two config options.CONFIG_MINIX_FS_BIG_ENDIAN_16BIT_INDEXED is only selected by m68k.
CONFIG_MINIX_FS_NATIVE_ENDIAN is selected by the architectures which use
native byte order bitmaps (h8300, microblaze, s390, sparc, m68knommu,
m32r, mips, sh, xtensa). The architectures which always use little-endian
bitmaps do not select these options.Finally, we can remove minix bit operations from asm/bitops.h for all
architectures.Signed-off-by: Akinobu Mita
Acked-by: Arnd Bergmann
Acked-by: Greg Ungerer
Cc: Geert Uytterhoeven
Cc: Roman Zippel
Cc: Andreas Schwab
Cc: Martin Schwidefsky
Cc: Heiko Carstens
Cc: Yoshinori Sato
Cc: Michal Simek
Cc: "David S. Miller"
Cc: Hirokazu Takata
Acked-by: Ralf Baechle
Acked-by: Paul Mundt
Cc: Chris Zankel
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds -
As the result of conversions, there are no users of ext2 non-atomic bit
operations except for ext2 filesystem itself. Now we can put them into
architecture independent code in ext2 filesystem, and remove from
asm/bitops.h for all architectures.Signed-off-by: Akinobu Mita
Cc: Jan Kara
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds -
Introduce little-endian bit operations to the big-endian architectures
which do not have native little-endian bit operations and the
little-endian architectures. (alpha, avr32, blackfin, cris, frv, h8300,
ia64, m32r, mips, mn10300, parisc, sh, sparc, tile, x86, xtensa)These architectures can just include generic implementation
(asm-generic/bitops/le.h).Signed-off-by: Akinobu Mita
Cc: Richard Henderson
Cc: Ivan Kokshaysky
Cc: Mikael Starvik
Cc: David Howells
Cc: Yoshinori Sato
Cc: "Luck, Tony"
Cc: Ralf Baechle
Cc: Kyle McMartin
Cc: Matthew Wilcox
Cc: Grant Grundler
Cc: Paul Mundt
Cc: Kazumoto Kojima
Cc: Hirokazu Takata
Cc: "David S. Miller"
Cc: Chris Zankel
Cc: Ingo Molnar
Cc: Thomas Gleixner
Acked-by: Hans-Christian Egtvedt
Acked-by: "H. Peter Anvin"
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds
23 Mar, 2011
1 commit
-
All architectures can use the common dma_addr_t typedef now. We can
remove the arch specific dma_addr_t.Signed-off-by: FUJITA Tomonori
Acked-by: Arnd Bergmann
Cc: Ingo Molnar
Cc: Thomas Gleixner
Cc: "H. Peter Anvin"
Cc: Ivan Kokshaysky
Cc: Richard Henderson
Cc: Matt Turner
Cc: "Luck, Tony"
Cc: Ralf Baechle
Cc: Benjamin Herrenschmidt
Cc: Heiko Carstens
Cc: Martin Schwidefsky
Cc: Chris Metcalf
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds
26 Jan, 2011
1 commit
-
This patch adds the linux/mm.h header file to the AVR32 arch pgalloc.c
implementation to fix the undefined reference to pgtable_page_ctor() and
pgtable_page_dtor().Signed-off-by: Hans-Christian Egtvedt
14 Jan, 2011
2 commits
-
This patch will fix the arguments to the architecture sys_clone() function to
match the asm-generic/syscalls.h prototype. In the same go remove the
architecture specific prototype for the same function.The sys_clone() function is only called from assembly, hence the argument types
were not having any affect.Signed-off-by: Hans-Christian Egtvedt
-
This patch removes the redundant syscalls prototypes in the architecture
specific syscalls.h header file. These were identical with the ones in
asm-generic/syscalls.h.Signed-off-by: Hans-Christian Egtvedt
Reported-by: Peter Huewe
Reported-by: Sven Schnelle
Cc: stable
27 Oct, 2010
1 commit
-
Since we no longer need to provide KM_type, the whole pte_*map_nested()
API is now redundant, remove it.Signed-off-by: Peter Zijlstra
Acked-by: Chris Metcalf
Cc: David Howells
Cc: Hugh Dickins
Cc: Rik van Riel
Cc: Ingo Molnar
Cc: Thomas Gleixner
Cc: "H. Peter Anvin"
Cc: Steven Rostedt
Cc: Russell King
Cc: Ralf Baechle
Cc: David Miller
Cc: Paul Mackerras
Cc: Benjamin Herrenschmidt
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds
23 Oct, 2010
2 commits
-
* git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/tty-2.6: (49 commits)
serial8250: ratelimit "too much work" error
serial: bfin_sport_uart: speed up sport RX sample rate to be 3% faster
serial: abstraction for 8250 legacy ports
serial/imx: check that the buffer is non-empty before sending it out
serial: mfd: add more baud rates support
jsm: Remove the uart port on errors
Alchemy: Add UART PM methods.
8250: allow platforms to override PM hook.
altera_uart: Don't use plain integer as NULL pointer
altera_uart: Fix missing prototype for registering an early console
altera_uart: Fixup type usage of port flags
altera_uart: Make it possible to use Altera UART and 8250 ports together
altera_uart: Add support for different address strides
altera_uart: Add support for getting mapbase and IRQ from resources
altera_uart: Add support for polling mode (IRQ-less)
serial: Factor out uart_poll_timeout() from 8250 driver
serial: mark the 8250 driver as maintained
serial: 8250: Don't delay after transmitter is ready.
tty: MAINTAINERS: add drivers/serial/jsm/ as maintained driver
vcs: invoke the vt update callback when /dev/vcs* is written to
... -
This patch converts avr32 to use asm-generic/ioctls.h instead of its
own version.The differences between the arch-specific version and the generic
version are as follows:- The generic version adds support for termiox
Acked-by: Haavard Skinnemoen
Signed-off-by: Jeff Mahoney
Signed-off-by: Greg Kroah-Hartman
07 Oct, 2010
1 commit
-
Fix the IRQ flag handling naming. In linux/irqflags.h under one configuration,
it maps:local_irq_enable() -> raw_local_irq_enable()
local_irq_disable() -> raw_local_irq_disable()
local_irq_save() -> raw_local_irq_save()
...and under the other configuration, it maps:
raw_local_irq_enable() -> local_irq_enable()
raw_local_irq_disable() -> local_irq_disable()
raw_local_irq_save() -> local_irq_save()
...This is quite confusing. There should be one set of names expected of the
arch, and this should be wrapped to give another set of names that are expected
by users of this facility.Change this to have the arch provide:
flags = arch_local_save_flags()
flags = arch_local_irq_save()
arch_local_irq_restore(flags)
arch_local_irq_disable()
arch_local_irq_enable()
arch_irqs_disabled_flags(flags)
arch_irqs_disabled()
arch_safe_halt()Then linux/irqflags.h wraps these to provide:
raw_local_save_flags(flags)
raw_local_irq_save(flags)
raw_local_irq_restore(flags)
raw_local_irq_disable()
raw_local_irq_enable()
raw_irqs_disabled_flags(flags)
raw_irqs_disabled()
raw_safe_halt()with type checking on the flags 'arguments', and then wraps those to provide:
local_save_flags(flags)
local_irq_save(flags)
local_irq_restore(flags)
local_irq_disable()
local_irq_enable()
irqs_disabled_flags(flags)
irqs_disabled()
safe_halt()with tracing included if enabled.
The arch functions can now all be inline functions rather than some of them
having to be macros.Signed-off-by: David Howells [X86, FRV, MN10300]
Signed-off-by: Chris Metcalf [Tile]
Signed-off-by: Michal Simek [Microblaze]
Tested-by: Catalin Marinas [ARM]
Acked-by: Thomas Gleixner
Acked-by: Haavard Skinnemoen [AVR]
Acked-by: Tony Luck [IA-64]
Acked-by: Hirokazu Takata [M32R]
Acked-by: Greg Ungerer [M68K/M68KNOMMU]
Acked-by: Ralf Baechle [MIPS]
Acked-by: Kyle McMartin [PA-RISC]
Acked-by: Paul Mackerras [PowerPC]
Acked-by: Martin Schwidefsky [S390]
Acked-by: Chen Liqin [Score]
Acked-by: Matt Fleming [SH]
Acked-by: David S. Miller [Sparc]
Acked-by: Chris Zankel [Xtensa]
Reviewed-by: Richard Henderson [Alpha]
Reviewed-by: Yoshinori Sato [H8300]
Cc: starvik@axis.com [CRIS]
Cc: jesper.nilsson@axis.com [CRIS]
Cc: linux-cris-kernel@axis.com
14 Aug, 2010
1 commit
-
Mark arguments to certain system calls as being const where they should be but
aren't. The list includes:(*) The filename arguments of various stat syscalls, execve(), various utimes
syscalls and some mount syscalls.(*) The filename arguments of some syscall helpers relating to the above.
(*) The buffer argument of various write syscalls.
Signed-off-by: David Howells
Acked-by: David S. Miller
Signed-off-by: Linus Torvalds
11 Aug, 2010
6 commits
-
Architectures implement dma_is_consistent() in different ways (some
misinterpret the definition of API in DMA-API.txt). So it hasn't been so
useful for drivers. We have only one user of the API in tree. Unlikely
out-of-tree drivers use the API.Even if we fix dma_is_consistent() in some architectures, it doesn't look
useful at all. It was invented long ago for some old systems that can't
allocate coherent memory at all. It's better to export only APIs that are
definitely necessary for drivers.Let's remove this API.
Signed-off-by: FUJITA Tomonori
Cc: James Bottomley
Reviewed-by: Konrad Rzeszutek Wilk
Cc:
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds -
dma_get_cache_alignment returns the minimum DMA alignment. Architectures
defines it as ARCH_DMA_MINALIGN (formally ARCH_KMALLOC_MINALIGN). So we
can unify dma_get_cache_alignment implementations.Note that some architectures implement dma_get_cache_alignment wrongly.
dma_get_cache_alignment() should return the minimum DMA alignment. So
fully-coherent architectures should return 1. This patch also fixes this
issue.Signed-off-by: FUJITA Tomonori
Cc:
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds -
Now each architecture has the own dma_get_cache_alignment implementation.
dma_get_cache_alignment returns the minimum DMA alignment. Architectures
define it as ARCH_KMALLOC_MINALIGN (it's used to make sure that malloc'ed
buffer is DMA-safe; the buffer doesn't share a cache with the others). So
we can unify dma_get_cache_alignment implementations.This patch:
dma_get_cache_alignment() needs to know if an architecture defines
ARCH_KMALLOC_MINALIGN or not (needs to know if architecture has DMA
alignment restriction). However, slab.h define ARCH_KMALLOC_MINALIGN if
architectures doesn't define it.Let's rename ARCH_KMALLOC_MINALIGN to ARCH_DMA_MINALIGN.
ARCH_KMALLOC_MINALIGN is used only in the internals of slab/slob/slub
(except for crypto).Signed-off-by: FUJITA Tomonori
Cc:
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds -
* 'for-2.6.36' of git://git.kernel.dk/linux-2.6-block: (149 commits)
block: make sure that REQ_* types are seen even with CONFIG_BLOCK=n
xen-blkfront: fix missing out label
blkdev: fix blkdev_issue_zeroout return value
block: update request stacking methods to support discards
block: fix missing export of blk_types.h
writeback: fix bad _bh spinlock nesting
drbd: revert "delay probes", feature is being re-implemented differently
drbd: Initialize all members of sync_conf to their defaults [Bugz 315]
drbd: Disable delay probes for the upcomming release
writeback: cleanup bdi_register
writeback: add new tracepoints
writeback: remove unnecessary init_timer call
writeback: optimize periodic bdi thread wakeups
writeback: prevent unnecessary bdi threads wakeups
writeback: move bdi threads exiting logic to the forker thread
writeback: restructure bdi forker loop a little
writeback: move last_active to bdi
writeback: do not remove bdi from bdi_list
writeback: simplify bdi code a little
writeback: do not lose wake-ups in bdi threads
...Fixed up pretty trivial conflicts in drivers/block/virtio_blk.c and
drivers/scsi/scsi_error.c as per Jens. -
This patch is against the 2.6.34 source.
Paraphrased from the 1989 BSD patch by David Borman @ cray.com:
These are the changes needed for the kernel to support
LINEMODE in the server.There is a new bit in the termios local flag word, EXTPROC.
When this bit is set, several aspects of the terminal driver
are disabled. Input line editing, character echo, and mapping
of signals are all disabled. This allows the telnetd to turn
off these functions when in linemode, but still keep track of
what state the user wants the terminal to be in.New ioctl:
TIOCSIG Generate a signal to processes in the
current process group of the pty.There is a new mode for packet driver, the TIOCPKT_IOCTL bit.
When packet mode is turned on in the pty, and the EXTPROC bit
is set, then whenever the state of the pty is changed, the
next read on the master side of the pty will have the TIOCPKT_IOCTL
bit set. This allows the process on the server side of the pty
to know when the state of the terminal has changed; it can then
issue the appropriate ioctl to retrieve the new state.Since the original BSD patches accompanied the source code for telnet
I've left that reference here, but obviously the feature is useful for
any remote terminal protocol, including ssh.The corresponding feature has existed in the BSD tty driver since 1989.
For historical reference, a good copy of the relevant files can be found
here:http://anonsvn.mit.edu/viewvc/krb5/trunk/src/appl/telnet/?pathrev=17741
Signed-off-by: Howard Chu
Cc: Alan Cox
Signed-off-by: Greg Kroah-Hartman -
As Jeff Dike pointed out, the Hayes ESP driver was removed in commit
f53a2ade0bb9f2a81f473e6469155172a96b7c38, so these ioctl definitions
should also be removed. This cleans up the remaining arch-specific
locations of this ioctl value.Thanks to Arnd for pointing these out.
Cc: Jeff Dike
Cc: Arnd Bergmann
Cc: Alan Cox
Signed-off-by: Greg Kroah-Hartman
08 Aug, 2010
1 commit
-
Architectures don't need to define ISA_DMA_THRESHOLD anymore.
Signed-off-by: FUJITA Tomonori
Acked-by: James Bottomley
Acked-by: David Howells
Signed-off-by: Jens Axboe
02 Aug, 2010
1 commit
-
Conflicts:
tools/perf/Makefile
tools/perf/util/hist.cMerge reason: Resolve the conflicts and update to latest upstream.
Signed-off-by: Ingo Molnar
27 Jul, 2010
1 commit
-
This patch fixes a build failure [1-4] in the atmel_serial code introduced by
patch the patch ARM: 6092/1: atmel_serial: support for RS485
communications (e8faff7330a3501eafc9bfe5f4f15af444be29f5)The build failure was caused by missing struct field and missing defines
for the avr32 board - the patch fixes this.[1] http://kisskb.ellerman.id.au/kisskb/buildresult/2575242/ - first failure in linux-next, may 11th
[2] http://kisskb.ellerman.id.au/kisskb/buildresult/2816418/ - still exists as of today
[3] http://kisskb.ellerman.id.au/kisskb/buildresult/2617511/ - first failure in Linus' tree - May 20th - did really no one notice this?!
[4] http://kisskb.ellerman.id.au/kisskb/buildresult/2813956/ - still exists in Linus' tree as of todaySigned-off-by: Peter Huewe
Signed-off-by: Greg Kroah-Hartman
09 Jun, 2010
1 commit
-
On 64bit, local_t is of size long, and thus we make local64_t an alias.
On 32bit, we fall back to atomic64_t. (architecture can provide optimized
32-bit version)(This new facility is to be used by perf events optimizations.)
Signed-off-by: Peter Zijlstra
Cc: linux-arch@vger.kernel.org
Cc: Andrew Morton
Cc: Linus Torvalds
LKML-Reference:
Signed-off-by: Ingo Molnar
28 May, 2010
1 commit
-
Signed-off-by: FUJITA Tomonori
Acked-by: Haavard Skinnemoen
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds
21 May, 2010
1 commit
-
* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jikos/trivial: (44 commits)
vlynq: make whole Kconfig-menu dependant on architecture
add descriptive comment for TIF_MEMDIE task flag declaration.
EEPROM: max6875: Header file cleanup
EEPROM: 93cx6: Header file cleanup
EEPROM: Header file cleanup
agp: use NULL instead of 0 when pointer is needed
rtc-v3020: make bitfield unsigned
PCI: make bitfield unsigned
jbd2: use NULL instead of 0 when pointer is needed
cciss: fix shadows sparse warning
doc: inode uses a mutex instead of a semaphore.
uml: i386: Avoid redefinition of NR_syscalls
fix "seperate" typos in comments
cocbalt_lcdfb: correct sections
doc: Change urls for sparse
Powerpc: wii: Fix typo in comment
i2o: cleanup some exit paths
Documentation/: it's -> its where appropriate
UML: Fix compiler warning due to missing task_struct declaration
UML: add kernel.h include to signal.c
...
17 May, 2010
1 commit
-
In preparation for removing volatile from the atomic_t definition, this
patch adds a volatile cast to all the atomic read functions.Signed-off-by: Anton Blanchard
Signed-off-by: Linus Torvalds
14 May, 2010
1 commit
-
Signed-off-by: Andreas Dilger
Acked-by: KOSAKI Motohiro
Signed-off-by: Jiri Kosina
13 Mar, 2010
1 commit
-
Use the generic ptrace_resume code for PTRACE_SYSCALL, PTRACE_CONT,
PTRACE_KILL and PTRACE_SINGLESTEP. This implies defining
arch_has_single_step in and implementing the
user_enable_single_step and user_disable_single_step functions, which also
causes the breakpoint information to be cleared on fork, which could be
considered a bug fix.Also the TIF_SYSCALL_TRACE thread flag is now cleared on PTRACE_KILL which
it previously wasn't which is consistent with all architectures using the
modern ptrace code.Currently avr32 doesn't implement any code to disable single stepping when
one of the non-syscall requests is called which seems wrong, but I've left
it as-is for now.Signed-off-by: Christoph Hellwig
Cc: Oleg Nesterov
Cc: Roland McGrath
Acked-by: Haavard Skinnemoen
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds
21 Feb, 2010
1 commit
-
On VIVT ARM, when we have multiple shared mappings of the same file
in the same MM, we need to ensure that we have coherency across all
copies. We do this via make_coherent() by making the pages
uncacheable.This used to work fine, until we allowed highmem with highpte - we
now have a page table which is mapped as required, and is not available
for modification via update_mmu_cache().Ralf Beache suggested getting rid of the PTE value passed to
update_mmu_cache():On MIPS update_mmu_cache() calls __update_tlb() which walks pagetables
to construct a pointer to the pte again. Passing a pte_t * is much
more elegant. Maybe we might even replace the pte argument with the
pte_t?Ben Herrenschmidt would also like the pte pointer for PowerPC:
Passing the ptep in there is exactly what I want. I want that
-instead- of the PTE value, because I have issue on some ppc cases,
for I$/D$ coherency, where set_pte_at() may decide to mask out the
_PAGE_EXEC.So, pass in the mapped page table pointer into update_mmu_cache(), and
remove the PTE value, updating all implementations and call sites to
suit.Includes a fix from Stephen Rothwell:
sparc: fix fallout from update_mmu_cache API change
Signed-off-by: Stephen Rothwell
Acked-by: Benjamin Herrenschmidt
Signed-off-by: Russell King
17 Dec, 2009
1 commit
-
* 'for-33' of git://repo.or.cz/linux-kbuild: (29 commits)
net: fix for utsrelease.h moving to generated
gen_init_cpio: fixed fwrite warning
kbuild: fix make clean after mismerge
kbuild: generate modules.builtin
genksyms: properly consider EXPORT_UNUSED_SYMBOL{,_GPL}()
score: add asm/asm-offsets.h wrapper
unifdef: update to upstream revision 1.190
kbuild: specify absolute paths for cscope
kbuild: create include/generated in silentoldconfig
scripts/package: deb-pkg: use fakeroot if available
scripts/package: add KBUILD_PKG_ROOTCMD variable
scripts/package: tar-pkg: use tar --owner=root
Kbuild: clean up marker
net: add net_tstamp.h to headers_install
kbuild: move utsrelease.h to include/generated
kbuild: move autoconf.h to include/generated
drop explicit include of autoconf.h
kbuild: move compile.h to include/generated
kbuild: drop include/asm
kbuild: do not check for include/asm-$ARCH
...Fixed non-conflicting clean merge of modpost.c as per comments from
Stephen Rothwell (modpost.c had grown an include of linux/autoconf.h
that needed to be changed to generated/autoconf.h)
16 Dec, 2009
1 commit
-
Currently all architectures but microblaze unconditionally define
USE_ELF_CORE_DUMP. The microblaze omission seems like an error to me, so
let's kill this ifdef and make sure we are the same everywhere.Signed-off-by: Christoph Hellwig
Acked-by: Hugh Dickins
Cc:
Cc: Michal Simek
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds