Commit Graph

543 Commits

Author SHA1 Message Date
David Howells d7627467b7 Make do_execve() take a const filename pointer
Make do_execve() take a const filename pointer so that kernel_execve() compiles
correctly on ARM:

arch/arm/kernel/sys_arm.c:88: warning: passing argument 1 of 'do_execve' discards qualifiers from pointer target type

This also requires the argv and envp arguments to be consted twice, once for
the pointer array and once for the strings the array points to.  This is
because do_execve() passes a pointer to the filename (now const) to
copy_strings_kernel().  A simpler alternative would be to cast the filename
pointer in do_execve() when it's passed to copy_strings_kernel().

do_execve() may not change any of the strings it is passed as part of the argv
or envp lists as they are some of them in .rodata, so marking these strings as
const should be fine.

Further kernel_execve() and sys_execve() need to be changed to match.

This has been test built on x86_64, frv, arm and mips.

Signed-off-by: David Howells <dhowells@redhat.com>
Tested-by: Ralf Baechle <ralf@linux-mips.org>
Acked-by: Russell King <rmk+kernel@arm.linux.org.uk>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2010-08-17 18:07:43 -07:00
Sam Ravnborg 8b1bb90701 defconfig reduction
Use the defconfig files generated by "make savedefconfig" for
remaining defconfig files.

Signed-off-by: Sam Ravnborg <sam@ravnborg.org>
2010-08-14 22:26:53 +02:00
Sam Ravnborg bf56fba670 archs: replace unifdef-y with header-y
unifdef-y and header-y have same semantic, so drop unifdef-y

Signed-off-by: Sam Ravnborg <sam@ravnborg.org>
2010-08-14 22:26:51 +02:00
Linus Torvalds ad41a1e0ca Merge branch 'io_remap_pfn_range' of git://www.jni.nu/cris
* 'io_remap_pfn_range' of git://www.jni.nu/cris:
  CRIS: Define io_remap_pfn_range as remap_pfn_range
2010-08-12 10:17:19 -07:00
Jesper Nilsson 5272a7534a CRIS: Define io_remap_pfn_range as remap_pfn_range
CRIS don't need any special mapping for io, but didn't define this,
meaning that all uses of io_remap_pfn_range lead to compile errors.

This fixes a compile error introduced in CRIS when drivers/mtd/mtdchar.c
mmap handling was changed in commit dd02b67d5e

Signed-off-by: Jesper Nilsson <jesper.nilsson@axis.com>
2010-08-12 14:32:58 +02:00
FUJITA Tomonori 3b9c6c11f5 dma-mapping: remove dma_is_consistent API
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 <fujita.tomonori@lab.ntt.co.jp>
Cc: James Bottomley <James.Bottomley@HansenPartnership.com>
Reviewed-by: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com>
Cc: <linux-arch@vger.kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2010-08-11 08:59:21 -07:00
FUJITA Tomonori 4565f0170d dma-mapping: unify dma_get_cache_alignment implementations
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 <fujita.tomonori@lab.ntt.co.jp>
Cc: <linux-arch@vger.kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2010-08-11 08:59:21 -07:00
Linus Torvalds 2f9e825d3e Merge branch 'for-2.6.36' of git://git.kernel.dk/linux-2.6-block
* '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.
2010-08-10 15:22:42 -07:00
hyc@symas.com 26df6d1340 tty: Add EXTPROC support for LINEMODE
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 <hyc@symas.com>
Cc: Alan Cox <alan@lxorguk.ukuu.org.uk>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2010-08-10 13:47:39 -07:00
Greg Kroah-Hartman a3c8ed693d tty: remove remaining Hayes ESP ioctls
As Jeff Dike pointed out, the Hayes ESP driver was removed in commit
f53a2ade0b, 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 <jdike@addtoit.com>
Cc: Arnd Bergmann <arnd@arndb.de>
Cc: Alan Cox <alan@linux.intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2010-08-10 13:47:39 -07:00
Linus Torvalds 7fbd15f9b4 Merge branch 'rs485fix' of git://www.jni.nu/cris
* 'rs485fix' of git://www.jni.nu/cris:
  CRIS: ioctl for getting RS485 information
2010-08-09 21:04:23 -07:00
Claudio Scordino f1d23ed821 CRIS: ioctl for getting RS485 information
Add ioctl to CRIS serial driver to get RS485 data from user-space.

Signed-off-by: Claudio Scordino <claudio@evidence.eu.com>
Signed-off-by: Jesper Nilsson <jesper.nilsson@axis.com>
2010-08-09 14:10:32 +02:00
Linus Torvalds 53bcef6063 Merge branch 'for-linus' of git://www.jni.nu/cris
* 'for-linus' of git://www.jni.nu/cris: (51 commits)
  CRIS: Fix alignment problem for older ld
  CRIS: Always dump registers for segfaulting process.
  CRIS: Add config for pausing a seg-faulting process
  CRIS: Don't take faults while in_atomic
  CRIS: Fixup lookup for delay slot faults
  CRIS: Discard exit.text and .data at runtime
  CRIS: Add cache aligned and read mostly data sections
  CRIS: Return something from profile write
  CRIS: Add ARTPEC-3 and timestamps for sync-serial
  CRIS: Better ARTPEC-3 support for gpio
  CRIS: Add include guard
  CRIS: Better handling of pinmux settings
  CRIS: New DMA defines for ARTPEC-3
  CRIS: __do_strncpy_from_user: Don't read the byte beyond the nil
  CRIS: Pagetable for ARTPEC-3
  CRIS: Machine dependent memmap.h
  CRIS: Check if pointer is set before using it
  CRIS: Machine dependent dma.h
  CRIS: Define __read_mostly for CRISv32
  CRIS: Discard .note.gnu.build-id section
  ...
2010-08-08 10:08:26 -07:00
FUJITA Tomonori 7e005f7979 remove needless ISA_DMA_THRESHOLD
Architectures don't need to define ISA_DMA_THRESHOLD anymore.

Signed-off-by: FUJITA Tomonori <fujita.tomonori@lab.ntt.co.jp>
Acked-by: James Bottomley <James.Bottomley@suse.de>
Acked-by: David Howells <dhowells@redhat.com>
Signed-off-by: Jens Axboe <jaxboe@fusionio.com>
2010-08-07 18:15:50 +02:00
Linus Torvalds b62ad9ab18 Merge branch 'timers-timekeeping-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip
* 'timers-timekeeping-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip:
  um: Fix read_persistent_clock fallout
  kgdb: Do not access xtime directly
  powerpc: Clean up obsolete code relating to decrementer and timebase
  powerpc: Rework VDSO gettimeofday to prevent time going backwards
  clocksource: Add __clocksource_updatefreq_hz/khz methods
  x86: Convert common clocksources to use clocksource_register_hz/khz
  timekeeping: Make xtime and wall_to_monotonic static
  hrtimer: Cleanup direct access to wall_to_monotonic
  um: Convert to use read_persistent_clock
  timkeeping: Fix update_vsyscall to provide wall_to_monotonic offset
  powerpc: Cleanup xtime usage
  powerpc: Simplify update_vsyscall
  time: Kill off CONFIG_GENERIC_TIME
  time: Implement timespec_add
  x86: Fix vtime/file timestamp inconsistencies

Trivial conflicts in Documentation/feature-removal-schedule.txt

Much less trivial conflicts in arch/powerpc/kernel/time.c resolved as
per Thomas' earlier merge commit 47916be4e2 ("Merge branch
'powerpc.cherry-picks' into timers/clocksource")
2010-08-06 13:18:29 -07:00
Linus Torvalds 4aed2fd8e3 Merge branch 'perf-core-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip
* 'perf-core-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip: (162 commits)
  tracing/kprobes: unregister_trace_probe needs to be called under mutex
  perf: expose event__process function
  perf events: Fix mmap offset determination
  perf, powerpc: fsl_emb: Restore setting perf_sample_data.period
  perf, powerpc: Convert the FSL driver to use local64_t
  perf tools: Don't keep unreferenced maps when unmaps are detected
  perf session: Invalidate last_match when removing threads from rb_tree
  perf session: Free the ref_reloc_sym memory at the right place
  x86,mmiotrace: Add support for tracing STOS instruction
  perf, sched migration: Librarize task states and event headers helpers
  perf, sched migration: Librarize the GUI class
  perf, sched migration: Make the GUI class client agnostic
  perf, sched migration: Make it vertically scrollable
  perf, sched migration: Parameterize cpu height and spacing
  perf, sched migration: Fix key bindings
  perf, sched migration: Ignore unhandled task states
  perf, sched migration: Handle ignored migrate out events
  perf: New migration tool overview
  tracing: Drop cpparg() macro
  perf: Use tracepoint_synchronize_unregister() to flush any pending tracepoint call
  ...

Fix up trivial conflicts in Makefile and drivers/cpufreq/cpufreq.c
2010-08-06 09:30:52 -07:00
Jesper Nilsson 85d9865721 CRIS: Fix alignment problem for older ld
CRISv10 uses a pretty old ld, which does not allow ALIGN(0),
(It becomes . = 0;) so instead we align to 1 byte.

Signed-off-by: Jesper Nilsson <jesper.nilsson@axis.com>
2010-08-04 18:30:01 +02:00
Jesper Nilsson 2d495ebc55 CRIS: Always dump registers for segfaulting process.
Signed-off-by: Jesper Nilsson <jesper.nilsson@axis.com>
2010-08-04 18:28:49 +02:00
Jesper Nilsson b4e8a1813c CRIS: Add config for pausing a seg-faulting process
Put it on a wait queue, so we can attach gdb to the process
to debug it instead of just killing it.

Signed-off-by: Jesper Nilsson <jesper.nilsson@axis.com>
2010-08-04 18:28:48 +02:00
Jesper Nilsson 028c1f6817 CRIS: Don't take faults while in_atomic
Signed-off-by: Jesper Nilsson <jesper.nilsson@axis.com>
2010-08-04 18:28:48 +02:00
Jesper Nilsson a90993c693 CRIS: Fixup lookup for delay slot faults
Signed-off-by: Jesper Nilsson <jesper.nilsson@axis.com>
2010-08-04 18:28:47 +02:00
Jesper Nilsson 7c8a25b544 CRIS: Discard exit.text and .data at runtime
This allows us to handle references from __bug_table.

Signed-off-by: Jesper Nilsson <jesper.nilsson@axis.com>
2010-08-04 14:10:04 +02:00
Jesper Nilsson dcb313c23f CRIS: Add cache aligned and read mostly data sections
Signed-off-by: Jesper Nilsson <jesper.nilsson@axis.com>
2010-08-04 14:03:07 +02:00
Jesper Nilsson c1c8f55874 CRIS: Return something from profile write
Even if it doesn't matter, we should return something.
Also, clean up some formatting.

Signed-off-by: Jesper Nilsson <jesper.nilsson@axis.com>
2010-08-04 13:02:40 +02:00
Jesper Nilsson 72e08db187 CRIS: Add ARTPEC-3 and timestamps for sync-serial
Signed-off-by: Jesper Nilsson <jesper.nilsson@axis.com>
2010-08-04 13:02:39 +02:00
Jesper Nilsson 4f248d1cea CRIS: Better ARTPEC-3 support for gpio
Add PWM support, correct comment for ARTPEC-3.

Signed-off-by: Jesper Nilsson <jesper.nilsson@axis.com>
2010-08-04 13:02:38 +02:00
Jesper Nilsson 97a644461d CRIS: Add include guard
Signed-off-by: Jesper Nilsson <jesper.nilsson@axis.com>
2010-08-04 13:02:38 +02:00
Jesper Nilsson 0c07d3abc8 CRIS: Better handling of pinmux settings
Depending on eth, eth_mido and geth fields in wr_hwprot, don't set
corresponding pins on gpio port b to gpio mode. This avoids
re-resetting the ethernet PHY should this already have been done.

Signed-off-by: Jesper Nilsson <jesper.nilsson@axis.com>
2010-08-04 13:02:37 +02:00
Jesper Nilsson 6f09963caf CRIS: New DMA defines for ARTPEC-3
Signed-off-by: Jesper Nilsson <jesper.nilsson@axis.com>
2010-08-04 13:02:36 +02:00
Jesper Nilsson da2af0a771 CRIS: __do_strncpy_from_user: Don't read the byte beyond the nil
Signed-off-by: Jesper Nilsson <jesper.nilsson@axis.com>
2010-08-04 13:02:36 +02:00
Jesper Nilsson 2dc1c40c6e CRIS: Pagetable for ARTPEC-3
Signed-off-by: Jesper Nilsson <jesper.nilsson@axis.com>
2010-08-04 13:02:35 +02:00
Jesper Nilsson 32e7a8ba8d CRIS: Machine dependent memmap.h
Move the old one to mach-fs and replace with a new one that
only include the correct one for the machine architecture.

Signed-off-by: Jesper Nilsson <jesper.nilsson@axis.com>
2010-08-04 13:02:35 +02:00
Jesper Nilsson 243ba2fa46 CRIS: Check if pointer is set before using it
Signed-off-by: Jesper Nilsson <jesper.nilsson@axis.com>
2010-08-04 13:02:34 +02:00
Jesper Nilsson a3af54ffa9 CRIS: Machine dependent dma.h
Move the old one to mach-fs and replace with a new one that
only include the correct one for the machine architecture.

Signed-off-by: Jesper Nilsson <jesper.nilsson@axis.com>
2010-08-04 13:02:34 +02:00
Jesper Nilsson 6fdf581e9d CRIS: Define __read_mostly for CRISv32
Signed-off-by: Jesper Nilsson <jesper.nilsson@axis.com>
2010-08-04 13:02:33 +02:00
Jesper Nilsson d717809bce CRIS: Discard .note.gnu.build-id section
Signed-off-by: Jesper Nilsson <jesper.nilsson@axis.com>
2010-08-04 13:02:33 +02:00
Jesper Nilsson 76fdf67bb5 CRIS: Avoid compilation warning for puts
Rename to aputs.
Also, simplify code by moving some common code out to macros.

Signed-off-by: Jesper Nilsson <jesper.nilsson@axis.com>
2010-08-04 13:02:32 +02:00
Jesper Nilsson ac93f62179 CRIS: Add debug for assembler macros
Signed-off-by: Jesper Nilsson <jesper.nilsson@axis.com>
2010-08-04 13:02:31 +02:00
Jesper Nilsson 7ec280c52c CRIS: Update for ARTPEC-3
Signed-off-by: Jesper Nilsson <jesper.nilsson@axis.com>
2010-08-04 13:02:31 +02:00
Jesper Nilsson 98560bd83e CRIS: Add more delays in DDR setup
Also, make DDR latency configurable.

Signed-off-by: Jesper Nilsson <jesper.nilsson@axis.com>
2010-08-04 13:02:30 +02:00
Jesper Nilsson 2d0503d1a6 CRIS: Add debug info for assembler code
Signed-off-by: Jesper Nilsson <jesper.nilsson@axis.com>
2010-08-04 13:02:30 +02:00
Jesper Nilsson 3a38125d3e CRIS: Add debug info for assembler code
Signed-off-by: Jesper Nilsson <jesper.nilsson@axis.com>
2010-08-04 13:02:29 +02:00
Jesper Nilsson 5f9ac92f3d CRIS: Add debug symbols for assembler code
Signed-off-by: Jesper Nilsson <jesper.nilsson@axis.com>
2010-08-04 13:02:29 +02:00
Jesper Nilsson e2ee9bb225 CRIS: Minor formatting fix in traps.c
Signed-off-by: Jesper Nilsson <jesper.nilsson@axis.com>
2010-08-04 13:02:15 +02:00
Jesper Nilsson 399233265c CRIS: v32: Correct auto-restart of syscalls
Register number was incorrect in syscalls
that go via the restartblock (e.g, poll).

Signed-off-by: Edgar Iglesias <Edgar.Iglesias@axis.com>
Signed-off-by: Jesper Nilsson <jesper.nilsson@axis.com>
2010-08-04 13:02:01 +02:00
Jesper Nilsson e281a31e1c CRIS: More ARTPEC-3 support and i2c-boardinfo.
Add standard i2d-devices.

Signed-off-by: Jesper Nilsson <jesper.nilsson@axis.com>
2010-08-04 13:01:50 +02:00
Jesper Nilsson c9cbf097b7 CRIS: Remove obsolete pinmux.c, now machine dependent.
Signed-off-by: Jesper Nilsson <jesper.nilsson@axis.com>
2010-08-04 13:01:29 +02:00
Jesper Nilsson ab43d14dab CRIS: kgdb: Fix compilation errors
Paths were not correct and pack_hex_byte() takes two arguments.

Signed-off-by: Jesper Nilsson <jesper.nilsson@axis.com>
2010-08-04 13:01:12 +02:00
Jesper Nilsson e336285db2 CRIS: v32: Correct path for intr_vect.h
Signed-off-by: Jesper Nilsson <jesper.nilsson@axis.com>
2010-08-04 13:00:53 +02:00
Jesper Nilsson e75a320eda CRIS: v32: Better irq mapping code
Signed-off-by: Jesper Nilsson <jesper.nilsson@axis.com>
2010-08-04 13:00:45 +02:00