Граф коммитов

1269 Коммитов

Автор SHA1 Сообщение Дата
David Mosberger-Tang 5d36aa9bbe [IA64] make unwinder stop at last frame of the bootloader
Add a dummy nop at the end of _start() to maintain the invariant that
the return-pointer (rp) always point to the calling function.  This
makes unwinding stop at the last frame, as it should.

Signed-off-by: David Mosberger-Tang <dmosberger@gmail.com>
Signed-off-by: Tony Luck <tony.luck@intel.com>
2007-08-13 13:26:02 -07:00
Russ Anderson a1287476e8 [IA64] Clean up CPE handler registration
Use local_vector_to_irq() instead of looping through all NR_IRQS.
This avoids registering the CPE handler on multiple irqs.  Only
register if the irq is valid.  If no valid irq is found, print an
error message and set up polling.

Signed-off-by: Russ Anderson <rja@sgi.com>
Signed-off-by: Tony Luck <tony.luck@intel.com>
2007-08-13 13:22:45 -07:00
Satyam Sharma 0b0517a475 [IA64] Include Kconfig.preempt
arch/ia64/Kconfig failed to include kernel/Kconfig.preempt that meant it
did not support PREEMPT_VOLUNTARY and PREEMPT_BKL (inadvertently).
This was recently noticed when the newly-added PREEMPT_NOTIFIERS in
Kconfig.preempt that was "select"ed from drivers/kvm/Kconfig (therefore)
started giving bogus warnings ('select' used by config symbol 'KVM' refers
to undefined symbol 'PREEMPT_NOTIFIERS') on ia64 builds.

So let's remove the open-coded definition of CONFIG_PREEMPT in
arch/ia64/Kconfig and replace it with just including Kconfig.preempt
instead, like the other archs do.

Signed-off-by: Satyam Sharma <satyam@infradead.org>
Signed-off-by: Tony Luck <tony.luck@intel.com>
2007-08-13 13:20:38 -07:00
Kenji Kaneshige 1115200a3d [IA64] SN2 needs platform specific irq_to_vector() function.
Add base support for implementing platform_irq_to_vector(), and
then use it on SN2.

Signed-off-by: Kenji Kaneshige <kaneshige.kenji@jp.fujitsu.com>
Acked-by: John Keller <jpk@sgi.com>
Signed-off-by: Tony Luck <tony.luck@intel.com>
2007-08-13 10:31:26 -07:00
Dimitri Sivanich 71416bea5a [IA64] disable irq's and check need_resched before safe_halt
While sending interrupts to a cpu to repeatedly wake a thread, on occasion
that thread will take a full timer tick cycle (4002 usec in my case)
to wakeup.

The problem concerns a race condition in the code around the safe_halt()
call in the default_idle() routine.  Setting 'nohalt' on the kernel
command line causes the long wakeups to disappear.

void
default_idle (void)
{
        local_irq_enable();
        while (!need_resched()) {
-->             if (can_do_pal_halt)
-->                     safe_halt();
                else

A timer tick could arrive between the check for !need_resched and the
actual call to safe_halt() (which does a pal call to PAL_HALT_LIGHT).
By the time the timer tick completes, a thread that might now need to run
could get held up for as long as a timer tick waiting for the halted cpu.

I'm proposing that we disable irq's and check need_resched again before
calling safe_halt().  Does anyone see any problem with this approach?

Signed-off-by: Dimitri Sivanich <sivanich@sgi.com>
Signed-off-by: Tony Luck <tony.luck@intel.com>
2007-08-13 10:17:23 -07:00
Linus Torvalds 1ed4395035 Merge branch 'release' of git://git.kernel.org/pub/scm/linux/kernel/git/aegl/linux-2.6
* 'release' of git://git.kernel.org/pub/scm/linux/kernel/git/aegl/linux-2.6:
  [IA64] ITC: Reduce rating for ITC clock if ITCs are drifty
  [IA64] SN2: Fix up sn2_rtc clock
  [IA64] Fix wrong access to irq_desc[] in iosapic_register_intr().
  [IA64] Fix possible race in destroy_and_reserve_irq()
  [IA64] Fix registered interrupt check
  [IA64] Remove a few duplicate includes
  [IA64] Allow smp_call_function_single() to current cpu
  [IA64] fix a few section mismatch warnings
2007-08-01 20:48:54 -07:00
Christoph Lameter b718f91c14 [IA64] ITC: Reduce rating for ITC clock if ITCs are drifty
Make sure to reduce the rating of the ITC clock if ITCs are drifty. If they
are drifting then we have not synchronized the ITC values, nor are we doing
the jitter compensation (useless since drift may increase the differentials
arbitrarily).

Without this patch it is possible that the ITC clock becomes selected as
the system clock on systems with drifty ITCs which will result in
nanosleep hanging.

One can still select the itc clock manually on such systems via

clocksource=itc

(Produces nice hangs on SGI Altix.)

Signed-off-by: Christoph Lameter <clameter@sgi.com>
Signed-off-by: Tony Luck <tony.luck@intel.com>
2007-08-01 14:02:36 -07:00
Christoph Lameter 40d4857534 [IA64] SN2: Fix up sn2_rtc clock
If the sn2_rtc clock is present then it is a must have since sn2_rtc
provides a synchronized time source on Altix systems. So elevate
the priority to 450. Otherwise the ITC would take precendence. Altix
systems currently do not boot because the ITC clocksource is broken. It
seems to assume that ITCs are synchronized and as a result nanosleep
hangs (may be fixed in a different patch).

While we are at it: Remove the sn2_mc definition. The sn2_rtc has a fixed
address. No point in reading the address from memory. Removing it avoids
touching one cacheline.

Signed-off-by: Christoph Lameter <clameter@sgi.com>
Signed-off-by: Tony Luck <tony.luck@intel.com>
2007-08-01 13:15:14 -07:00
Kenji Kaneshige 224685c0d1 [IA64] Fix wrong access to irq_desc[] in iosapic_register_intr().
In error path we must unlock irq_desc[irq].lock before we change
'irq'.

Signed-off-by: Kenji Kaneshige <kaneshige.kenji@jp.fujitsu.com>
Signed-off-by: Tony Luck <tony.luck@intel.com>
2007-08-01 11:57:59 -07:00
Stephane Eranian a583f1b542 remove unused TIF_NOTIFY_RESUME flag
Remove unused TIF_NOTIFY_RESUME flag for all processor architectures.  The
flag was not used excecpt on IA-64 where the patch replaces it with
TIF_PERFMON_WORK.

Signed-off-by: stephane eranian <eranian@hpl.hp.com>
Cc: <linux-arch@vger.kernel.org>
Cc: "Luck, Tony" <tony.luck@intel.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2007-07-31 15:39:38 -07:00
Kenji Kaneshige 216fcd29af [IA64] Fix possible race in destroy_and_reserve_irq()
Currently, destroy_and_reserve_irq() sets irq_status[irq] UNUSED using
clear_irq_vector() and sets irq_status[irq] RSVD using reserve_irq().
But there is a race window because vector_lock is once released between
them. This patch fixes this race window.

Signed-off-by: Kenji Kaneshige <kaneshige.kenji@jp.fujitsu.com>
Signed-off-by: Tony Luck <tony.luck@intel.com>
2007-07-30 16:30:42 -07:00
Kenji Kaneshige c4c376f7e1 [IA64] Fix registered interrupt check
Fix the problem that interrupts are not initialized correctly at PCI
hotplug or driver reloading time.

By vector domain change, the iosapic_rte_info structure was changed to
be on the iosapic_intr_info[irq].rtes list even after the interrupts
are unregistered. So iosapic_intr_info[irq].rtes list must not be
checked to see if there are registered interrupts (RTEs) on the
irq. We must check iosapic_intr_info[irq].count counter instead.

Signed-off-by: Kenji Kaneshige <kaneshige.kenji@jp.fujitsu.com>
Signed-off-by: Tony Luck <tony.luck@intel.com>
2007-07-30 16:29:47 -07:00
Jesper Juhl 1b30859b8d [IA64] Remove a few duplicate includes
This patch removes a few duplicate includes from arch/ia64/

Acked-by: Jes Sorensen <jes@sgi.com>
Signed-off-by: Jesper Juhl <jesper.juhl@gmail.com>
Signed-off-by: Tony Luck <tony.luck@intel.com>
2007-07-30 16:28:59 -07:00
Avi Kivity 8a2d869305 [IA64] Allow smp_call_function_single() to current cpu
This removes the requirement for callers to get_cpu() to check in simple
cases.  i386 and x86_64 already received a similar treatment.

Signed-off-by: Avi Kivity <avi@qumranet.com>
Signed-off-by: Tony Luck <tony.luck@intel.com>
2007-07-30 16:26:45 -07:00
Sam Ravnborg 056e6d89aa [IA64] fix a few section mismatch warnings
Fix the following section mismatch warnings:

WARNING: vmlinux.o(.text+0x41902): Section mismatch: reference to .init.text:__alloc_bootmem (between 'ia64_mca_cpu_init' and 'ia64_do_tlb_purge')
WARNING: vmlinux.o(.text+0x49222): Section mismatch: reference to .init.text:__alloc_bootmem (between 'register_intr' and 'iosapic_register_intr')
WARNING: vmlinux.o(.text+0x62beb2): Section mismatch: reference to .init.text:__alloc_bootmem_node (between 'hubdev_init_node' and 'cnodeid_get_geoid')

Signed-off-by: Sam Ravnborg <sam@ravnborg.org>
Signed-off-by: Tony Luck <tony.luck@intel.com>
2007-07-30 16:15:50 -07:00
Linus Torvalds a6ce22a5f6 Merge master.kernel.org:/pub/scm/linux/kernel/git/jejb/scsi-rc-fixes-2.6
* master.kernel.org:/pub/scm/linux/kernel/git/jejb/scsi-rc-fixes-2.6: (28 commits)
  [SCSI] mpt fusion: Changes in mptctl.c for logging support
  [SCSI] mpt fusion: Changes in mptfc.c mptlan.c mptsas.c and mptspi.c for logging support
  [SCSI] mpt fusion: Changes in mptscsih.c for logging support
  [SCSI] mpt fusion: Changes in mptbase.c for logging support
  [SCSI] mpt fusion: logging support in Kconfig, Makefile, mptbase.h and addition of mptdebug.h
  [SCSI] libsas: Fix potential NULL dereference in sas_smp_get_phy_events()
  [SCSI] bsg: Fix build for CONFIG_BLOCK=n
  [SCSI] aacraid: fix Sunrise Lake reset handling
  [SCSI] aacraid: add SCSI SYNCHONIZE_CACHE range checking
  [SCSI] add easyRAID to the no report luns blacklist
  [SCSI] advansys: lindent and other large, uninteresting changes
  [SCSI] aic79xx, aic7xxx: Fix incorrect width setting
  [SCSI] qla2xxx: fix to honor ignored parameters in sysfs attributes
  [SCSI] aacraid: draw line in sand, sundry cleanup and version update
  [SCSI] iscsi_tcp: Turn off bounce buffers
  [SCSI] libiscsi: fix cmd seqeunce number checking
  [SCSI] iscsi_tcp, ib_iser Enable module refcounting for iscsi host template
  [SCSI] libiscsi: make sure session is not blocked when removing host
  [SCSI] libsas: Remove PCI dependencies
  [SCSI] simscsi: convert to use the data buffer accessors
  ...
2007-07-29 17:22:03 -07:00
Alexey Dobriyan 4e950f6f01 Remove fs.h from mm.h
Remove fs.h from mm.h. For this,
 1) Uninline vma_wants_writenotify(). It's pretty huge anyway.
 2) Add back fs.h or less bloated headers (err.h) to files that need it.

As result, on x86_64 allyesconfig, fs.h dependencies cut down from 3929 files
rebuilt down to 3444 (-12.3%).

Cross-compile tested without regressions on my two usual configs and (sigh):

alpha              arm-mx1ads        mips-bigsur          powerpc-ebony
alpha-allnoconfig  arm-neponset      mips-capcella        powerpc-g5
alpha-defconfig    arm-netwinder     mips-cobalt          powerpc-holly
alpha-up           arm-netx          mips-db1000          powerpc-iseries
arm                arm-ns9xxx        mips-db1100          powerpc-linkstation
arm-assabet        arm-omap_h2_1610  mips-db1200          powerpc-lite5200
arm-at91rm9200dk   arm-onearm        mips-db1500          powerpc-maple
arm-at91rm9200ek   arm-picotux200    mips-db1550          powerpc-mpc7448_hpc2
arm-at91sam9260ek  arm-pleb          mips-ddb5477         powerpc-mpc8272_ads
arm-at91sam9261ek  arm-pnx4008       mips-decstation      powerpc-mpc8313_rdb
arm-at91sam9263ek  arm-pxa255-idp    mips-e55             powerpc-mpc832x_mds
arm-at91sam9rlek   arm-realview      mips-emma2rh         powerpc-mpc832x_rdb
arm-ateb9200       arm-realview-smp  mips-excite          powerpc-mpc834x_itx
arm-badge4         arm-rpc           mips-fulong          powerpc-mpc834x_itxgp
arm-carmeva        arm-s3c2410       mips-ip22            powerpc-mpc834x_mds
arm-cerfcube       arm-shannon       mips-ip27            powerpc-mpc836x_mds
arm-clps7500       arm-shark         mips-ip32            powerpc-mpc8540_ads
arm-collie         arm-simpad        mips-jazz            powerpc-mpc8544_ds
arm-corgi          arm-spitz         mips-jmr3927         powerpc-mpc8560_ads
arm-csb337         arm-trizeps4      mips-malta           powerpc-mpc8568mds
arm-csb637         arm-versatile     mips-mipssim         powerpc-mpc85xx_cds
arm-ebsa110        i386              mips-mpc30x          powerpc-mpc8641_hpcn
arm-edb7211        i386-allnoconfig  mips-msp71xx         powerpc-mpc866_ads
arm-em_x270        i386-defconfig    mips-ocelot          powerpc-mpc885_ads
arm-ep93xx         i386-up           mips-pb1100          powerpc-pasemi
arm-footbridge     ia64              mips-pb1500          powerpc-pmac32
arm-fortunet       ia64-allnoconfig  mips-pb1550          powerpc-ppc64
arm-h3600          ia64-bigsur       mips-pnx8550-jbs     powerpc-prpmc2800
arm-h7201          ia64-defconfig    mips-pnx8550-stb810  powerpc-ps3
arm-h7202          ia64-gensparse    mips-qemu            powerpc-pseries
arm-hackkit        ia64-sim          mips-rbhma4200       powerpc-up
arm-integrator     ia64-sn2          mips-rbhma4500       s390
arm-iop13xx        ia64-tiger        mips-rm200           s390-allnoconfig
arm-iop32x         ia64-up           mips-sb1250-swarm    s390-defconfig
arm-iop33x         ia64-zx1          mips-sead            s390-up
arm-ixp2000        m68k              mips-tb0219          sparc
arm-ixp23xx        m68k-amiga        mips-tb0226          sparc-allnoconfig
arm-ixp4xx         m68k-apollo       mips-tb0287          sparc-defconfig
arm-jornada720     m68k-atari        mips-workpad         sparc-up
arm-kafa           m68k-bvme6000     mips-wrppmc          sparc64
arm-kb9202         m68k-hp300        mips-yosemite        sparc64-allnoconfig
arm-ks8695         m68k-mac          parisc               sparc64-defconfig
arm-lart           m68k-mvme147      parisc-allnoconfig   sparc64-up
arm-lpd270         m68k-mvme16x      parisc-defconfig     um-x86_64
arm-lpd7a400       m68k-q40          parisc-up            x86_64
arm-lpd7a404       m68k-sun3         powerpc              x86_64-allnoconfig
arm-lubbock        m68k-sun3x        powerpc-cell         x86_64-defconfig
arm-lusl7200       mips              powerpc-celleb       x86_64-up
arm-mainstone      mips-atlas        powerpc-chrp32

Signed-off-by: Alexey Dobriyan <adobriyan@gmail.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2007-07-29 17:09:29 -07:00
Yoann Padioleau 1e4dcd22ef [IA64] Compare pointer against NULL, not '0'
When comparing a pointer, it's clearer to compare it to NULL than to 0.

Signed-off-by: Yoann Padioleau <padator@wanadoo.fr>
Signed-off-by: Tony Luck <tony.luck@intel.com>
2007-07-27 15:40:42 -07:00
Tony Luck 7a6c813594 [IA64] Fix build failure in fs/quota.c
b716395e2b added code to handle
a compatability issue with 32bit quota tools, but the new compat
routines are only needed when CONFIG_COMPAT=y (and with this set
to 'n' there are compilation problems since some new typedefs are
not visible).

Reported by Doug Chapman.  Fix tuned by a cast of thousands (Andi,
Andreas, Arthur, HPA, Willy)

Signed-off-by: Tony Luck <tony.luck@intel.com>
2007-07-27 15:40:13 -07:00
Thomas Renninger 7091138fb7 [IA64] Use new acpi_device_id struct for HID init in ia64/hp/common/sba_iommu.c
Forgot to adjust this one with the acpi autoloading patches
in commit 8c8eb78f67

Acked-by: Myron Stowe <myron.stowe@hp.com>
Acked-by: Len Brown <len.brown@intel.com>
Signed-off-by: Thomas Renninger <trenn@suse.de>
Signed-off-by: Tony Luck <tony.luck@intel.com>
2007-07-27 15:38:31 -07:00
Kenji Kaneshige 074ff85600 [IA64] Fix wrong return value in parse_vector_domain
Fix wrong return value in parse_vector_domain().

Signed-off-by: Kenji Kaneshige <kaneshige.kenji@jp.fujitsu.com>
Signed-off-by: Tony Luck <tony.luck@intel.com>
2007-07-26 14:28:02 -07:00
Kenji Kaneshige 3c3738c874 [IA64] Fix wrong assumption in acpi_gsi_to_irq
The ia64's acpi_gsi_to_irq() function assumes irq == vector. But in
fact irq can be different from vector. This patch fix this wrong
assumption.

Signed-off-by: Kenji Kaneshige <kaneshige.kenji@jp.fujitsu.com>
Signed-off-by: Tony Luck <tony.luck@intel.com>
2007-07-26 14:27:42 -07:00
Kenji Kaneshige 6bde71ec1e [IA64] Add sanity check into __bind_irq_vector
Add some sanity checks into __bind_irq_vector().

Signed-off-by: Kenji Kaneshige <kaneshige.kenji@jp.fujitsu.com>
Signed-off-by: Tony Luck <tony.luck@intel.com>
2007-07-26 14:27:19 -07:00
Al Viro 6aa8b04975 cyclone.c: silly use of volatile, __iomem fixes
u32* volatile cyclone_timer means volatile auto pointer to u32,
which is clearly not what had been intended (we never even take
the address of that variable, let alone pass it to something that
could change it behind our back).  u32 volatile * is what the
authors apparently wanted to say, but in reality we don't need that
qualifier there at all - it's (properly) only passed to iomem helpers
which takes care of that stuff just fine.

Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2007-07-26 11:11:57 -07:00
Al Viro 712aaa1cb1 use CLOCKSOURCE_MASK() instead of too large constant
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2007-07-26 11:11:57 -07:00
Al Viro 8dc946307c ia64 time.c: ANSIfy
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2007-07-26 11:11:57 -07:00
Linus Torvalds e4903fb595 Merge branch 'release' of git://git.kernel.org/pub/scm/linux/kernel/git/aegl/linux-2.6
* 'release' of git://git.kernel.org/pub/scm/linux/kernel/git/aegl/linux-2.6:
  [IA64] Nail two more simple section mismatch errors
  [IA64] fix section mismatch warnings
  [IA64] rename partial_page
  [IA64] Ensure that machvec is set up takes place before serial console
  [IA64] vector-domain - fix vector_table
  [IA64] vector-domain - handle assign_irq_vector(AUTO_ASSIGN)
2007-07-25 15:50:20 -07:00
FUJITA Tomonori fd3adb2ae8 [SCSI] simscsi: convert to use the data buffer accessors
- remove the unnecessary map_single path.

- convert to use the new accessors for the sg lists and the
parameters.

Signed-off-by: FUJITA Tomonori <fujita.tomonori@lab.ntt.co.jp>
Acked-by: Tony Luck <tony.luck@intel.com>
Signed-off-by: James Bottomley <James.Bottomley@SteelEye.com>
2007-07-25 16:18:11 -04:00
Tony Luck cb2e0912f7 [IA64] Nail two more simple section mismatch errors
pcibios_setup (between 'pci_setup' and 'quirk_mellanox_tavor')
setup_profiling_timer (between 'write_profile' and 'delayed_put_task_struct')

Signed-off-by: Tony Luck <tony.luck@intel.com>
2007-07-25 13:08:41 -07:00
Tony Luck 9d6f40b86b [IA64] fix section mismatch warnings
In 741f98fe29 Sam added full
checking across the entire vmlinux image.  This flushed out
a dozen new section mismatch warnings.  Start the whack-a-mole
game again to stomp them out.

Signed-off-by: Tony Luck <tony.luck@intel.com>
2007-07-25 13:08:26 -07:00
akpm@linux-foundation.org 3b74d18e54 [IA64] rename partial_page
Jens has added a partial_page thing in splice whcih conflicts with the ia64
one.  Rename ia64 out of the way.  (ia64 chose poorly).

Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Tony Luck <tony.luck@intel.com>
2007-07-25 12:56:39 -07:00
Horms a07ee86205 [IA64] Ensure that machvec is set up takes place before serial console
Parse the machvec command line option outside of the early_param()
so that ia64_mv is set before any console intialisation that
may result from early_param parsing.

Signed-off-by: Simon Horman <horms@verge.net.au>
Signed-off-by: Tony Luck <tony.luck@intel.com>
2007-07-25 11:12:47 -07:00
Kenji Kaneshige 6ffbc82351 [IA64] vector-domain - fix vector_table
Fix wrong access to vector_table[].

Signed-off-by: Kenji Kaneshige <kaneshige.kenji@jp.fujitsu.com>
Signed-off-by: Tony Luck <tony.luck@intel.com>
2007-07-25 11:09:01 -07:00
Yasuaki Ishimatsu 8f5ad1a822 [IA64] vector-domain - handle assign_irq_vector(AUTO_ASSIGN)
This change fixes a panic when assign_irq_vector(irq) is called with
irq = AUTO_ASSIGN.

Signed-off-by: Yasuaki Ishimatsu <isimatu.yasuaki@jp.fujitsu.com>
Signed-off-by: Tony Luck <tony.luck@intel.com>
2007-07-25 11:05:48 -07:00
Len Brown e8b2fd0122 ACPI: Kconfig: remove CONFIG_ACPI_SLEEP from source
As it was a synonym for (CONFIG_ACPI && CONFIG_X86),
the ifdefs for it were more clutter than they were worth.

For ia64, just add a few stubs in anticipation of future
S3 or S4 support.

Signed-off-by: Len Brown <len.brown@intel.com>
2007-07-25 01:29:39 -04:00
Andrew Morton d4e3cc387e revert "PIE randomization"
There are reports of this causing userspace failures
(http://lkml.org/lkml/2007/7/20/421).

Revert.

Cc: Jan Kratochvil <honza@jikos.cz>
Cc: Jiri Kosina <jkosina@suse.cz>
Cc: Ingo Molnar <mingo@elte.hu>
Cc: Roland McGrath <roland@redhat.com>
Cc: Jakub Jelinek <jakub@redhat.com>
Cc: Ulrich Kunitz <kune@deine-taler.de>
Cc: "H. Peter Anvin" <hpa@zytor.com>
Cc: "Bret Towe" <magnade@gmail.com>
Cc: "Luck, Tony" <tony.luck@intel.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2007-07-21 17:49:14 -07:00
Linus Torvalds efa7e8673c Merge branch 'release' of git://git.kernel.org/pub/scm/linux/kernel/git/aegl/linux-2.6
* 'release' of git://git.kernel.org/pub/scm/linux/kernel/git/aegl/linux-2.6:
  [IA64] Prevent people from directly including <asm/rwsem.h>.
  [IA64] remove time interpolator
  [IA64] Convert to generic timekeeping/clocksource
  [IA64] refresh some config files for 64K pagesize
  [IA64] Delete iosapic_free_rte()
  [IA64] fallocate system call
  [IA64] Enable percpu vector domain for IA64_DIG
  [IA64] Enable percpu vector domain for IA64_GENERIC
  [IA64] Support irq migration across domain
  [IA64] Add support for vector domain
  [IA64] Add mapping table between irq and vector
  [IA64] Check if irq is sharable
  [IA64] Fix invalid irq vector assumption for iosapic
  [IA64] Use dynamic irq for iosapic interrupts
  [IA64] Use per iosapic lock for indirect iosapic register access
  [IA64] Cleanup lock order in iosapic_register_intr
  [IA64] Remove duplicated members in iosapic_rte_info
  [IA64] Remove block structure for locking in iosapic.c
2007-07-20 12:02:20 -07:00
Tony Luck c36c282b88 Pull ia64-clocksource into release branch 2007-07-20 11:26:47 -07:00
Tony Luck 0aa366f351 [IA64] Convert to generic timekeeping/clocksource
This is a merge of Peter Keilty's initial patch (which was
revived by Bob Picco) for this with Hidetoshi Seto's fixes
and scaling improvements.

Acked-by: Bob Picco <bob.picco@hp.com>
Signed-off-by: Tony Luck <tony.luck@intel.com>
2007-07-20 11:22:30 -07:00
Paul Mundt 20c2df83d2 mm: Remove slab destructors from kmem_cache_create().
Slab destructors were no longer supported after Christoph's
c59def9f22 change. They've been
BUGs for both slab and slub, and slob never supported them
either.

This rips out support for the dtor pointer from kmem_cache_create()
completely and fixes up every single callsite in the kernel (there were
about 224, not including the slab allocator definitions themselves,
or the documentation references).

Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2007-07-20 10:11:58 +09:00
Tony Luck f4fbfb0dda Pull vector-domain into release branch 2007-07-19 16:34:40 -07:00
Tony Luck ffc720409a [IA64] refresh some config files for 64K pagesize
Update arch/ia64/defconfig: select 64K pagesize
Same for arch/ia64/configs/tiger_defconfig + CONFIG_COMPAT=n

Signed-off-by: Tony Luck <tony.luck@intel.com>
2007-07-19 16:32:48 -07:00
Yasuaki Ishimatsu bf903d0a45 [IA64] Delete iosapic_free_rte()
>   arch/ia64/kernel/iosapic.c:597: warning: 'iosapic_free_rte' defined but not used
>
> This isn't spurious, the only call to iosapic_free_rte() has been removed, but there
> is still a call to iosapic_alloc_rte() ... which means we must have a memory leak.

I did it on purpose (and gave the warning a miss...) and I consider
iosapic_free_rte() is no longer needed.

I decided to remain iosapic_rte_info to keep gsi-to-irq binding
after device disable. Indeed it needs some extra memory, but it
is only "sizeof(iosapic_rte_info) * <the number of removed devices>"
bytes and has no memory leak becasue re-enabled devices use the
iosapic_rte_info which they used before disabling.

Signed-off-by: Yasuaki Ishimatsu <isimatu.yasuaki@jp.fujitsu.com>
Signed-off-by: Tony Luck <tony.luck@intel.com>
2007-07-19 14:03:55 -07:00
David Chinner 3d7559e677 [IA64] fallocate system call
sys_fallocate for ia64. This uses an empty slot #1303 erroneously
marked as reserved for move_pages (which had already been allocated
as syscall #1276)

Signed-Off-By: Dave Chinner <dgc@sgi.com>
Signed-off-by: Tony Luck <tony.luck@intel.com>
2007-07-19 13:48:00 -07:00
Ralf Baechle c41917df8a [PATCH] sched: sched_cacheflush is now unused
Since Ingo's recent scheduler rewrite which was merged as commit
0437e109e1 sched_cacheflush is unused.

Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
2007-07-19 21:28:35 +02:00
Ollie Wild b6a2fea393 mm: variable length argument support
Remove the arg+env limit of MAX_ARG_PAGES by copying the strings directly from
the old mm into the new mm.

We create the new mm before the binfmt code runs, and place the new stack at
the very top of the address space.  Once the binfmt code runs and figures out
where the stack should be, we move it downwards.

It is a bit peculiar in that we have one task with two mm's, one of which is
inactive.

[a.p.zijlstra@chello.nl: limit stack size]
Signed-off-by: Ollie Wild <aaw@google.com>
Signed-off-by: Peter Zijlstra <a.p.zijlstra@chello.nl>
Cc: <linux-arch@vger.kernel.org>
Cc: Hugh Dickins <hugh@veritas.com>
[bunk@stusta.de: unexport bprm_mm_init]
Signed-off-by: Adrian Bunk <bunk@stusta.de>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2007-07-19 10:04:45 -07:00
Fenghua Yu f34e3b61f2 use the new percpu interface for shared data
Currently most of the per cpu data, which is accessed by different cpus,
has a ____cacheline_aligned_in_smp attribute.  Move all this data to the
new per cpu shared data section: .data.percpu.shared_aligned.

This will seperate the percpu data which is referenced frequently by other
cpus from the local only percpu data.

Signed-off-by: Fenghua Yu <fenghua.yu@intel.com>
Acked-by: Suresh Siddha <suresh.b.siddha@intel.com>
Cc: Rusty Russell <rusty@rustcorp.com.au>
Cc: Christoph Lameter <clameter@sgi.com>
Cc: "Luck, Tony" <tony.luck@intel.com>
Cc: Andi Kleen <ak@suse.de>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2007-07-19 10:04:45 -07:00
Fenghua Yu 5fb7dc37dc define new percpu interface for shared data
per cpu data section contains two types of data.  One set which is
exclusively accessed by the local cpu and the other set which is per cpu,
but also shared by remote cpus.  In the current kernel, these two sets are
not clearely separated out.  This can potentially cause the same data
cacheline shared between the two sets of data, which will result in
unnecessary bouncing of the cacheline between cpus.

One way to fix the problem is to cacheline align the remotely accessed per
cpu data, both at the beginning and at the end.  Because of the padding at
both ends, this will likely cause some memory wastage and also the
interface to achieve this is not clean.

This patch:

Moves the remotely accessed per cpu data (which is currently marked
as ____cacheline_aligned_in_smp) into a different section, where all the data
elements are cacheline aligned. And as such, this differentiates the local
only data and remotely accessed data cleanly.

Signed-off-by: Fenghua Yu <fenghua.yu@intel.com>
Acked-by: Suresh Siddha <suresh.b.siddha@intel.com>
Cc: Rusty Russell <rusty@rustcorp.com.au>
Cc: Christoph Lameter <clameter@sgi.com>
Cc: <linux-arch@vger.kernel.org>
Cc: "Luck, Tony" <tony.luck@intel.com>
Cc: Andi Kleen <ak@suse.de>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2007-07-19 10:04:44 -07:00
Michael Ellerman 3d7e33825d jprobes: make jprobes a little safer for users
I realise jprobes are a razor-blades-included type of interface, but that
doesn't mean we can't try and make them safer to use.  This guy I know once
wrote code like this:

struct jprobe jp = { .kp.symbol_name = "foo", .entry = "jprobe_foo" };

And then his kernel exploded. Oops.

This patch adds an arch hook, arch_deref_entry_point() (I don't like it
either) which takes the void * in a struct jprobe, and gives back the text
address that it represents.

We can then use that in register_jprobe() to check that the entry point we're
passed is actually in the kernel text, rather than just some random value.

Signed-off-by: Michael Ellerman <michael@ellerman.id.au>
Cc: Prasanna S Panchamukhi <prasanna@in.ibm.com>
Acked-by: Ananth N Mavinakayanahalli <ananth@in.ibm.com>
Cc: Anil S Keshavamurthy <anil.s.keshavamurthy@intel.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>
2007-07-19 10:04:44 -07:00
Nick Piggin 83c54070ee mm: fault feedback #2
This patch completes Linus's wish that the fault return codes be made into
bit flags, which I agree makes everything nicer.  This requires requires
all handle_mm_fault callers to be modified (possibly the modifications
should go further and do things like fault accounting in handle_mm_fault --
however that would be for another patch).

[akpm@linux-foundation.org: fix alpha build]
[akpm@linux-foundation.org: fix s390 build]
[akpm@linux-foundation.org: fix sparc build]
[akpm@linux-foundation.org: fix sparc64 build]
[akpm@linux-foundation.org: fix ia64 build]
Signed-off-by: Nick Piggin <npiggin@suse.de>
Cc: Richard Henderson <rth@twiddle.net>
Cc: Ivan Kokshaysky <ink@jurassic.park.msu.ru>
Cc: Russell King <rmk@arm.linux.org.uk>
Cc: Ian Molton <spyro@f2s.com>
Cc: Bryan Wu <bryan.wu@analog.com>
Cc: Mikael Starvik <starvik@axis.com>
Cc: David Howells <dhowells@redhat.com>
Cc: Yoshinori Sato <ysato@users.sourceforge.jp>
Cc: "Luck, Tony" <tony.luck@intel.com>
Cc: Hirokazu Takata <takata@linux-m32r.org>
Cc: Geert Uytterhoeven <geert@linux-m68k.org>
Cc: Roman Zippel <zippel@linux-m68k.org>
Cc: Greg Ungerer <gerg@uclinux.org>
Cc: Matthew Wilcox <willy@debian.org>
Cc: Paul Mackerras <paulus@samba.org>
Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Cc: Heiko Carstens <heiko.carstens@de.ibm.com>
Cc: Martin Schwidefsky <schwidefsky@de.ibm.com>
Cc: Paul Mundt <lethal@linux-sh.org>
Cc: Kazumoto Kojima <kkojima@rr.iij4u.or.jp>
Cc: Richard Curnow <rc@rc0.org.uk>
Cc: William Lee Irwin III <wli@holomorphy.com>
Cc: "David S. Miller" <davem@davemloft.net>
Cc: Jeff Dike <jdike@addtoit.com>
Cc: Paolo 'Blaisorblade' Giarrusso <blaisorblade@yahoo.it>
Cc: Miles Bader <uclinux-v850@lsi.nec.co.jp>
Cc: Chris Zankel <chris@zankel.net>
Acked-by: Kyle McMartin <kyle@mcmartin.ca>
Acked-by: Haavard Skinnemoen <hskinnemoen@atmel.com>
Acked-by: Ralf Baechle <ralf@linux-mips.org>
Acked-by: Andi Kleen <ak@muc.de>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
[ Still apparently needs some ARM and PPC loving - Linus ]
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2007-07-19 10:04:41 -07:00
Linus Torvalds 492559af23 Merge branch 'release' of git://git.kernel.org/pub/scm/linux/kernel/git/aegl/linux-2.6
* 'release' of git://git.kernel.org/pub/scm/linux/kernel/git/aegl/linux-2.6:
  [IA64] Clean away some code inside some non-existent CONFIG ifdefs
  [IA64] ar.itc access must really be after xtime_lock.sequence has been read
  [IA64] correctly count CPU objects in the ia64/sn hwperf interface
  [IA64] arbitary speed tty ioctl support
  [IA64] use machvec=dig on hpzx1 platforms
2007-07-17 11:31:57 -07:00
Al Viro 547c178b72 missing exports of csum_...
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
Acked-by: David S. Miller <davem@davemloft.net>
Acked-by: Geert Uytterhoeven <geert@linux-m68k.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2007-07-17 11:01:07 -07:00
Ananth N Mavinakayanahalli 87a7defb0d Kprobes on select architectures no longer EXPERIMENTAL
Based on usage and testing over the past couple of years, kprobes on
i386, ia64, powerpc and x86_64 is no longer EXPERIMENTAL.

This is a follow-up to Robert P.J. Day's patch making "Instrumentation
support" non-EXPERIMENTAL:

	http://marc.info/?l=linux-kernel&m=118396955423812&w=2

Arch maintainers for sparc64, avr32 and s390 need to take a similar call.

Signed-off-by: Ananth N Mavinakayanahalli <ananth@in.ibm.com>
Cc: Andi Kleen <ak@suse.de>
Cc: Paul Mackerras <paulus@samba.org>
Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Cc: "Luck, Tony" <tony.luck@intel.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2007-07-17 10:23:03 -07:00
Pavel Emelianov bcdcd8e725 Report that kernel is tainted if there was an OOPS
If the kernel OOPSed or BUGed then it probably should be considered as
tainted.  Thus, all subsequent OOPSes and SysRq dumps will report the
tainted kernel.  This saves a lot of time explaining oddities in the
calltraces.

Signed-off-by: Pavel Emelianov <xemul@openvz.org>
Acked-by: Randy Dunlap <randy.dunlap@oracle.com>
Cc: <linux-arch@vger.kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
[ Added parisc patch from Matthew Wilson  -Linus ]
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2007-07-17 10:23:02 -07:00
Mel Gorman ed7ed36517 handle kernelcore=: generic
This patch adds the kernelcore= parameter for x86.

Once all patches are applied, a new command-line parameter exist and a new
sysctl.  This patch adds the necessary documentation.

From: Yasunori Goto <y-goto@jp.fujitsu.com>

  When "kernelcore" boot option is specified, kernel can't boot up on ia64
  because of an infinite loop.  In addition, the parsing code can be handled
  in an architecture-independent manner.

  This patch uses common code to handle the kernelcore= parameter.  It is
  only available to architectures that support arch-independent zone-sizing
  (i.e.  define CONFIG_ARCH_POPULATES_NODE_MAP).  Other architectures will
  ignore the boot parameter.

[bunk@stusta.de: make cmdline_parse_kernelcore() static]
Signed-off-by: Mel Gorman <mel@csn.ul.ie>
Signed-off-by: Yasunori Goto <y-goto@jp.fujitsu.com>
Acked-by: Andy Whitcroft <apw@shadowen.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2007-07-17 10:22:59 -07:00
Yasuaki Ishimatsu e5bd762bda [IA64] Enable percpu vector domain for IA64_DIG
Add per-CPU vector domain support for IA64_DIG. It is enabled by
adding the "vector=percpu" boot option.

Signed-off-by: Kenji Kaneshige <kaneshige.kenji@jp.fujitsu.com>
Signed-off-by: Yasuaki Ishimatsu <isimatu.yasuaki@jp.fujitsu.com>
Signed-off-by: Tony Luck <tony.luck@intel.com>
2007-07-17 09:58:19 -07:00
Yasuaki Ishimatsu d080d397f9 [IA64] Enable percpu vector domain for IA64_GENERIC
Add per-CPU vector domain support for IA64_GENERIC. It is enabled by
adding the "vector=percpu" boot option.

Signed-off-by: Kenji Kaneshige <kaneshige.kenji@jp.fujitsu.com>
Signed-off-by: Yasuaki Ishimatsu <isimatu.yasuaki@jp.fujitsu.com>
Signed-off-by: Tony Luck <tony.luck@intel.com>
2007-07-17 09:58:06 -07:00
Yasuaki Ishimatsu cd378f18cf [IA64] Support irq migration across domain
Add support for IRQ migration across vector domain.

Signed-off-by: Kenji Kaneshige <kaneshige.kenji@jp.fujitsu.com>
Signed-off-by: Yasuaki Ishimatsu <isimatu.yasuaki@jp.fujitsu.com>
Signed-off-by: Tony Luck <tony.luck@intel.com>
2007-07-17 09:57:42 -07:00
Yasuaki Ishimatsu 4994be1b3f [IA64] Add support for vector domain
Add fundamental support for multiple vector domain. There still exists
only one vector domain even with this patch. IRQ migration across
domain is not supported yet by this patch.

Signed-off-by: Kenji Kaneshige <kaneshige.kenji@jp.fujitsu.com>
Signed-off-by: Yasuaki Ishimatsu <isimatu.yasuaki@jp.fujitsu.com>
Signed-off-by: Tony Luck <tony.luck@intel.com>
2007-07-17 09:52:13 -07:00
Yasuaki Ishimatsu e1b30a3928 [IA64] Add mapping table between irq and vector
Add mapping tables between irqs and vectors, and its management code.
This is necessary for supporting multiple vector domain because 1:1
mapping between irq and vector will be changed to n:1.

The irq == vector relationship between irqs and vectors is explicitly
remained for percpu interrupts, platform interrupts, isa IRQs and
vectors assigned using assign_irq_vector() because some programs might
depend on it.

And I should consider the following problem.

When pci drivers enabled/disabled devices dynamically, its irq number
is changed to the different one. Therefore, suspend/resume code may
happen problem.

To fix this problem, I bound gsi to irq.

Signed-off-by: Kenji Kaneshige <kaneshige.kenji@jp.fujitsu.com>
Signed-off-by: Yasuaki Ishimatsu <isimatu.yasuaki@jp.fujitsu.com>
Signed-off-by: Tony Luck <tony.luck@intel.com>
2007-07-17 09:51:49 -07:00
Yasuaki Ishimatsu f8c087f31e [IA64] Check if irq is sharable
Need to check if irq is sharable amoung handlers when searching
sharable IOSAPIC irq.

Signed-off-by: Kenji Kaneshige <kaneshige.kenji@jp.fujitsu.com>
Signed-off-by: Yasuaki Ishimatsu <isimatu.yasuaki@jp.fujitsu.com>
Signed-off-by: Tony Luck <tony.luck@intel.com>
2007-07-17 09:51:16 -07:00
Yasuaki Ishimatsu 4bbdec7a84 [IA64] Fix invalid irq vector assumption for iosapic
Many of IOSAPIC codes depends on the flollowing assumptions, but these
would become invalid when multiple vector domain will be supported in
the future.

  - 1:1 mapping between IRQ and vector
  - IRQ == vector

To fix those invalid assumptions, this patch changes iosapic_intr_info[]
to be indexed by irq number instead of vector.

Signed-off-by: Kenji Kaneshige <kaneshige.kenji@jp.fujitsu.com>
Signed-off-by: Yasuaki Ishimatsu <isimatu.yasuaki@jp.fujitsu.com>
Signed-off-by: Tony Luck <tony.luck@intel.com>
2007-07-17 09:51:00 -07:00
Yasuaki Ishimatsu eb21ab2495 [IA64] Use dynamic irq for iosapic interrupts
Use create_irq()/destroy_irq() for iosapic interrupts.

Signed-off-by: Kenji Kaneshige <kaneshige.kenji@jp.fujitsu.com>
Signed-off-by: Yasuaki Ishimatsu <isimatu.yasuaki@jp.fujitsu.com>
Signed-off-by: Tony Luck <tony.luck@intel.com>
2007-07-17 09:50:44 -07:00
Yasuaki Ishimatsu c1726d6f1a [IA64] Use per iosapic lock for indirect iosapic register access
Use per-iosapic lock for indirect iosapic register access. It reduces
lock contention.

Signed-off-by: Kenji Kaneshige <kaneshige.kenji@jp.fujitsu.com>
Signed-off-by: Yasuaki Ishimatsu <isimatu.yasuaki@jp.fujitsu.com>
Signed-off-by: Tony Luck <tony.luck@intel.com>
2007-07-17 09:50:29 -07:00
Yasuaki Ishimatsu 40598cbe9c [IA64] Cleanup lock order in iosapic_register_intr
Cleanup order of irq_desc.lock and iosapic_lock in
iosapic_register_intr() and iosapic_unregister_intr().

Signed-off-by: Kenji Kaneshige <kaneshige.kenji@jp.fujitsu.com>
Signed-off-by: Yasuaki Ishimatsu <isimatu.yasuaki@jp.fujitsu.com>
Signed-off-by: Tony Luck <tony.luck@intel.com>
2007-07-17 09:50:13 -07:00
Yasuaki Ishimatsu c5e3f9e5a2 [IA64] Remove duplicated members in iosapic_rte_info
Remove duplicated members in iosapic_rte_info in iosapic.c. This patch
has no functional changes.

Signed-off-by: Kenji Kaneshige <kaneshige.kenji@jp.fujitsu.com>
Signed-off-by: Yasuaki Ishimatsu <isimatu.yasuaki@jp.fujitsu.com>
Signed-off-by: Tony Luck <tony.luck@intel.com>
2007-07-17 09:49:56 -07:00
Yasuaki Ishimatsu e3a8f7b8b6 [IA64] Remove block structure for locking in iosapic.c
Remove unnecessary indent between spin_lock() and spin_unlock() in
iosapic.c. This has no functional changes.

Signed-off-by: Kenji Kaneshige <kaneshige.kenji@jp.fujitsu.com>
Signed-off-by: Yasuaki Ishimatsu <isimatu.yasuaki@jp.fujitsu.com>
Signed-off-by: Tony Luck <tony.luck@intel.com>
2007-07-17 09:49:36 -07:00
Vasily Tarasov b716395e2b diskquota: 32bit quota tools on 64bit architectures
OpenVZ Linux kernel team has discovered the problem with 32bit quota tools
working on 64bit architectures.  In 2.6.10 kernel sys32_quotactl() function
was replaced by sys_quotactl() with the comment "sys_quotactl seems to be
32/64bit clean, enable it for 32bit" However this isn't right.  Look at
if_dqblk structure:

struct if_dqblk {
        __u64 dqb_bhardlimit;
        __u64 dqb_bsoftlimit;
        __u64 dqb_curspace;
        __u64 dqb_ihardlimit;
        __u64 dqb_isoftlimit;
        __u64 dqb_curinodes;
        __u64 dqb_btime;
        __u64 dqb_itime;
        __u32 dqb_valid;
};

For 32 bit quota tools sizeof(if_dqblk) == 0x44.
But for 64 bit kernel its size is 0x48, 'cause of alignment!
Thus we got a problem. Attached patch reintroduce sys32_quotactl() function,
that handles this and related situations.

[michal.k.k.piotrowski@gmail.com: build fix]
[akpm@linux-foundation.org: Make it link with CONFIG_QUOTA=n]
Signed-off-by: Vasily Tarasov <vtaras@openvz.org>
Cc: Andi Kleen <ak@suse.de>
Cc: "Luck, Tony" <tony.luck@intel.com>
Cc: Jan Kara <jack@ucw.cz>
Cc: <linux-arch@vger.kernel.org>
Signed-off-by: Michal Piotrowski <michal.k.k.piotrowski@gmail.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2007-07-16 09:05:48 -07:00
Jan Kratochvil 60bfba7e85 PIE randomization
This patch is using mmap()'s randomization functionality in such a way that
it maps the main executable of (specially compiled/linked -pie/-fpie)
ET_DYN binaries onto a random address (in cases in which mmap() is allowed
to perform a randomization).

Origin of this patch is in exec-shield
(http://people.redhat.com/mingo/exec-shield/)

[jkosina@suse.cz: pie randomization: fix BAD_ADDR macro]
Signed-off-by: Jan Kratochvil <honza@jikos.cz>
Signed-off-by: Jiri Kosina <jkosina@suse.cz>
Cc: Ingo Molnar <mingo@elte.hu>
Cc: Roland McGrath <roland@redhat.com>
Cc: Jakub Jelinek <jakub@redhat.com>
Signed-off-by: Jiri Kosina <jkosina@suse.cz>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2007-07-16 09:05:42 -07:00
Yinghai Lu 18a8bd949d serial: convert early_uart to earlycon for 8250
Beacuse SERIAL_PORT_DFNS is removed from include/asm-i386/serial.h and
include/asm-x86_64/serial.h.  the serial8250_ports need to be probed late in
serial initializing stage.  the console_init=>serial8250_console_init=>
register_console=>serial8250_console_setup will return -ENDEV, and console
ttyS0 can not be enabled at that time.  need to wait till uart_add_one_port in
drivers/serial/serial_core.c to call register_console to get console ttyS0.
that is too late.

Make early_uart to use early_param, so uart console can be used earlier.  Make
it to be bootconsole with CON_BOOT flag, so can use console handover feature.
and it will switch to corresponding normal serial console automatically.

new command line will be:
	console=uart8250,io,0x3f8,9600n8
	console=uart8250,mmio,0xff5e0000,115200n8
or
	earlycon=uart8250,io,0x3f8,9600n8
	earlycon=uart8250,mmio,0xff5e0000,115200n8

it will print in very early stage:
	Early serial console at I/O port 0x3f8 (options '9600n8')
	console [uart0] enabled
later for console it will print:
	console handover: boot [uart0] -> real [ttyS0]

Signed-off-by: <yinghai.lu@sun.com>
Cc: Andi Kleen <ak@suse.de>
Cc: Bjorn Helgaas <bjorn.helgaas@hp.com>
Cc: Russell King <rmk@arm.linux.org.uk>
Cc: Gerd Hoffmann <kraxel@suse.de>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2007-07-16 09:05:35 -07:00
Tony Luck 4f8de27456 [IA64] Clean away some code inside some non-existent CONFIG ifdefs
Robert P.J. Day has a script that finds places in the code that
use non-existent CONFIG variables.  It complained of two uses in
ia64 specific code: CONFIG_IA64_SDV and CONFIG_KDB (both used in
the hp/sim code).

Signed-off-by: Tony Luck <tony.luck@intel.com>
2007-07-13 16:31:54 -07:00
Hidetoshi Seto 829a999625 [IA64] ar.itc access must really be after xtime_lock.sequence has been read
The ".acq" semantics of the load only apply w.r.t. other data access.
Reading the clock (ar.itc) isn't a data access so strange things can
happen here.  Specifically the read of ar.itc can be launched as soon
as the read of xtime_lock.sequence is ISSUED.  Since this may cache
miss, and that might cause a thread switch, and there may be cache
contention for the line containing xtime_lock, it may be a long time
before the actual value is returned, so the ar.itc value may be very
stale.

Move the consumption of r28 up before the read of ar.itc to make sure
that we really have got the current value of xtime_lock.sequence
before look at ar.itc.

Signed-off-by: Hidetoshi Seto <seto.hidetoshi@jp.fujitsu.com>
Signed-off-by: Tony Luck <tony.luck@intel.com>
2007-07-13 16:21:44 -07:00
Mark Goodwin 83e12a076e [IA64] correctly count CPU objects in the ia64/sn hwperf interface
Correctly count CPU objects for SGI ia64/sn hwperf interface

Signed-off-by: Mark Goodwin <markgw@sgi.com>
Signed-off-by: Jack Steiner <steiner@sgi.com>
Signed-off-by: Tony Luck <tony.luck@intel.com>
2007-07-13 16:09:46 -07:00
Terry Loftin 51b58e3e26 [IA64] use machvec=dig on hpzx1 platforms
On HP zx1 machines, the 'machvec=dig' parameter is needed for the
kdump kernel to avoid problems with the HP sba iommu.  The problem
is that during the boot of the kdump kernel, the iommu is re-initialized,
so in-flight DMA from improperly shutdown drivers causes an IOTLB
miss which leads to an MCA.  With kdump, the idea is to get into the
kdump kernel with as little code as we can, so shutting down drivers
properly is not an option.

The workaround is to add 'machvec=dig' to the kdump kernel boot
parameters.  This makes the kdump kernel avoid using the sba iommu
altogether, leaving the IOTLB intact.  Any ongoing DMA falls
harmlessly outside the kdump kernel.  After the kdump kernel reboots,
all devices will have been shutdown properly and DMA stopped.

This patch pushes that functionality into the sba iommu
initialization code, so that users won't have to find the obscure
documentation telling them about 'machvec=dig'.

This patch only affects HP platforms.  It still includes one
extern declaration in the file, because no applicable header file
exists.

Signed-off-by: Terry Loftin <terry.loftin@hp.com>
Signed-off-by: Alex Williamson <alex.williamson@hp.com>
Signed-off-by: Tony Luck <tony.luck@intel.com>
2007-07-13 09:16:50 -07:00
Linus Torvalds 0806ca2ab3 Merge branch 'release' of git://git.kernel.org/pub/scm/linux/kernel/git/aegl/linux-2.6
* 'release' of git://git.kernel.org/pub/scm/linux/kernel/git/aegl/linux-2.6:
  [IA64] Support multiple CPUs going through OS_MCA
  [IA64] silence GCC ia64 unused variable warnings
  [IA64] prevent MCA when performing MMIO mmap to PCI config space
  [IA64] add sn_register_pmi_handler oemcall
  [IA64] Stop bit for brl instruction
  [IA64] SN: Correct ROM resource length for BIOS copy
  [IA64] Don't set psr.ic and psr.i simultaneously
2007-07-12 13:41:29 -07:00
Matthew Wilcox 36e235901f PCI: Only build PCI syscalls on architectures that want them
The PCI syscalls are built on every architecture except X86, but only
a few have ever hooked them up.  Use a new Kconfig symbol to save a
couple of kB on the architectures that have never used the syscalls.
Tested on x86 and ia64 only.

Signed-off-by: Matthew Wilcox <matthew@wil.cx>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2007-07-11 16:02:13 -07:00
Russ Anderson 1612b18ccb [IA64] Support multiple CPUs going through OS_MCA
Linux does not gracefully deal with multiple processors going
through OS_MCA aa part of the same MCA event.  The first cpu
into OS_MCA grabs the ia64_mca_serialize lock.  Subsequent
cpus wait for that lock, preventing them from reporting in as
rendezvoused.  The first cpu waits 5 seconds then complains
that all the cpus have not rendezvoused.  The first cpu then
handles its MCA and frees up all the rendezvoused cpus and
releases the ia64_mca_serialize lock.  One of the subsequent
cpus going thought OS_MCA then gets the ia64_mca_serialize
lock, waits another 5 seconds and then complains that none of
the other cpus have rendezvoused.

This patch allows multiple CPUs to gracefully go through OS_MCA.

The first CPU into ia64_mca_handler() grabs a mca_count lock.
Subsequent CPUs into ia64_mca_handler() are added to a list of cpus
that need to go through OS_MCA (a bit set in mca_cpu), and report
in as rendezvoused, and but spin waiting their turn.

The first CPU sees everyone rendezvous, handles his MCA, wakes up
one of the other CPUs waiting to process their MCA (by clearing
one mca_cpu bit), and then waits for the other cpus to complete
their MCA handling.  The next CPU handles his MCA and the process
repeats until all the CPUs have handled their MCA.  When the last
CPU has handled it's MCA, it sets monarch_cpu to -1, releasing all
the CPUs.

In testing this works more reliably and faster.

Thanks to Keith Owens for suggesting numerous improvements
to this code.

Signed-off-by: Russ Anderson <rja@sgi.com>
Signed-off-by: Tony Luck <tony.luck@intel.com>
2007-07-11 11:50:11 -07:00
Jes Sorensen 256a7e097b [IA64] silence GCC ia64 unused variable warnings
Tell GCC to stop spewing out unnecessary warnings for unused variables
passed to functions as pointers for ia64 files.

Signed-off-by: Jes Sorensen <jes@sgi.com>
Signed-off-by: Tony Luck <tony.luck@intel.com>
2007-07-11 11:40:42 -07:00
Alex Chiang 012b7105cc [IA64] prevent MCA when performing MMIO mmap to PCI config space
Example memory map (HP rx7640 with 'default' acpiconfig setting, VGA disabled):
   0x00000000 - 0x3FFFBFFF  supports only WB (cacheable) access

If a user attempts to perform an MMIO mmap (using the PCIIOC_MMAP_IS_MEM ioctl)
to PCI config space (like mmap'ing and accessing memory at 0xA0000),
we will MCA because the kernel will attempt to use a mapping with the UC
attribute.

So check the memory attribute in kern_mmap and the EFI memmap. If WC is
requested, and WC or UC access is supported for the region, allow it.
Otherwise, use the same attribute the kernel uses.

Updates documentation and test cases as well.

Signed-off-by: Alex Chiang <achiang@hp.com>
Signed-off-by: Bjorn Helgaas <bjorn.helgaas@hp.com>
Signed-off-by: Tony Luck <tony.luck@intel.com>
2007-07-11 11:34:49 -07:00
Christian Kandeler c6255e9865 [IA64] Stop bit for brl instruction
SDM says that brl instruction must be followed by a stop bit.
Fix instance in BRL_COND_FSYS_BUBBLE_DOWN where it isn't.

Signed-off-by: Christian Kandeler <christian.kandeler@hob.de>
Signed-off-by: Tony Luck <tony.luck@intel.com>
2007-07-09 13:37:44 -07:00
John Keller d7ad2254fa [IA64] SN: Correct ROM resource length for BIOS copy
On SN systems, when setting the IORESOURCE_ROM_BIOS_COPY resource flag,
the resource length should be set to the actual size of the ROM image
so that a call to pci_map_rom() returns the correct size.

Signed-off-by: John Keller <jpk@sgi.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Tony Luck <tony.luck@intel.com>
2007-07-09 13:37:18 -07:00
Tony Luck 83ce6ef840 [IA64] Don't set psr.ic and psr.i simultaneously
It's not a good idea to use "ssm psr.ic | psr.i" to simultaneously
enable interrupts and interrupt state collection, the two bits can
take effect asynchronously, so it is possible for an interrupt to
be serviced while psr.ic is still zero.

Signed-off-by: Tony Luck <tony.luck@intel.com>
2007-07-09 10:30:28 -07:00
Ingo Molnar 0437e109e1 sched: zap the migration init / cache-hot balancing code
the SMP load-balancer uses the boot-time migration-cost estimation
code to attempt to improve the quality of balancing. The reason for
this code is that the discrete priority queues do not preserve
the order of scheduling accurately, so the load-balancer skips
tasks that were running on a CPU 'recently'.

this code is fundamental fragile: the boot-time migration cost detector
doesnt really work on systems that had large L3 caches, it caused boot
delays on large systems and the whole cache-hot concept made the
balancing code pretty undeterministic as well.

(and hey, i wrote most of it, so i can say it out loud that it sucks ;-)

under CFS the same purpose of cache affinity can be achieved without
any special cache-hot special-case: tasks are sorted in the 'timeline'
tree and the SMP balancer picks tasks from the left side of the
tree, thus the most cache-cold task is balanced automatically.

Signed-off-by: Ingo Molnar <mingo@elte.hu>
2007-07-09 18:51:57 +02:00
Jes Sorensen 1ee27a4eed [IA64] Make SN2 PCI code use ioremap rather than manually mangle the address
This one changes the SN2 specific PCI drivers to use ioremap() for
obtaining the real address to access for the PCI registers instead of
manually calculating them with __IA64_UNCACHED_OFFSET.

The patch should have no real change when running on a normal Linux
kernel, but when running as a paravirtualized it is needed.

Signed-off-by: Jes Sorenson <jes@sgi.com>
Signed-off-by: Tony Luck <tony.luck@intel.com>
2007-06-26 13:35:45 -07:00
Russ Anderson c034637967 [IA64] Force error to surface in nofault code
Montecito behaves slightly differently than previous processors,
resulting in the MCA due to a failed PIO read to sometimes surfacing
outside the nofault code.  Adding an additional or and stop bits
ensures the MCA surfaces in the nofault code.

Signed-off-by: Russ Anderson <rja@sgi.com>
Signed-off-by: Tony Luck <tony.luck@intel.com>
2007-06-26 13:34:16 -07:00
MUNEDA Takahiro 2e77ff21d2 [IA64] remove duplicate header include line
Remove duplicate header include line from arch/ia64/kernel/time.c.

Signed-off-by: MUNEDA Takahiro <muneda.takahiro@jp.fujitsu.com>
Signed-off-by: Tony Luck <tony.luck@intel.com>
2007-06-26 13:33:45 -07:00
Keith Owens 66fa9b107e [IA64] Correct unwind validation code
Both rp_loc and pfs_loc can be in the register stack area _or_ they can
be in the memory stack area, the latter occurs when a struct pt_regs is
pushed.  Correct the validation check on these fields to check for both
stack areas.  Not allowing for memory stack locations means no
backtrace past ia64_leave_kernel, or any other code that uses
PT_REGS_UNWIND_INFO.

Signed-off-by: Keith Owens <kaos@sgi.com>
Signed-off-by: Tony Luck <tony.luck@intel.com>
2007-06-26 13:33:10 -07:00
vignesh babu 9be26f4c4b [IA64] is_power_of_2-ia64/mm/hugetlbpage.c
Replacing (n & (n-1)) in the context of power of 2 checks
with is_power_of_2

Signed-off-by: vignesh babu <vignesh.babu@wipro.com>
Signed-off-by: Tony Luck <tony.luck@intel.com>
2007-06-26 13:32:59 -07:00
Tony Luck d57c4a3892 [IA64] acpi_get_sysname() should be __init
Section mismatch: reference to .init.text:acpi_find_rsdp
 (between 'acpi_get_sysname' and 'acpi_request_vector')

acpi_get_sysname() needs to call the __init function acpi_find_rsdp, but it
doesn't have the __init attribute itself, hence the warning. Luckily it is
only called from machvec_init() which has __init attribute, so the fix
is to define acpi_get_sysname() as __init too.

Signed-off-by: Tony Luck <tony.luck@intel.com>
2007-05-24 10:59:44 -07:00
Venki Pallipadi ce45b51ac4 [IA64] Fix using uninitialized data in _PDC setup
Silly bug in _PDC data setup. Haven't seen any real side-effects of this one
yet. But, needs fixing regardless.

Signed-off-by: Venkatesh Pallipadi <venkatesh.pallipadi@intel.com>
Signed-off-by: Tony Luck <tony.luck@intel.com>
2007-05-24 10:14:30 -07:00
Tony Luck d86ebd1409 [IA64] start_secondary() and smp_callin() should be __cpuinit
Continuing the seemingly neverending quest to stomp out "Section
mismatch" warnings.

Signed-off-by: Tony Luck <tony.luck@intel.com>
2007-05-23 16:46:40 -07:00
Linus Torvalds 5fd52203e1 Merge branch 'release' of git://git.kernel.org/pub/scm/linux/kernel/git/aegl/linux-2.6
* 'release' of git://git.kernel.org/pub/scm/linux/kernel/git/aegl/linux-2.6:
  [IA64] fix kmalloc(0) in arch/ia64/pci/pci.c
  [IA64] Only unwind non-running tasks.
  [IA64] Improve unwind checking.
  [IA64] Yet another section mismatch warning
  [IA64] Fix bogus messages about system calls not implemented.
2007-05-22 16:46:29 -07:00
Kenji Kaneshige a66aa704d6 [IA64] fix kmalloc(0) in arch/ia64/pci/pci.c
Hiroyuki Kamezawa reported the problem that pci_acpi_scan_root() of
ia64 might call kmalloc_node() with zero size.

Currently ia64's pci_acpi_scan_root() assumes that _CRS method of root
bridge has at least one resource window. But, the root bridges that
has no resource window must be taken into account.

Signed-off-by: Kenji Kaneshige <kaneshige.kenji@jp.fujitsu.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Tony Luck <tony.luck@intel.com>
2007-05-22 10:20:36 -07:00
Robin Holt 6ae384884d [IA64] Only unwind non-running tasks.
Unwinding a running task has proven problematic.

In one instance, the running task was attempting to unwind itself and
received an interrupt between when get_wchan allocated local variables on
the stack and when unw_init_from_blocked_task was called which resulted
in unw_init_frame_info to place this tasks task_struct pointer over the
switch stack's ar_bspstore entry.

Signed-off-by: Robin Holt <holt@sgi.com>
Signed-off-by: Tony Luck <tony.luck@intel.com>
2007-05-22 10:16:07 -07:00
Robin Holt e2e6fe7bb6 [IA64] Improve unwind checking.
This patch adds some sanity checks to keep register and memory stack
pointers in the unw_frame_info structure within the tasks stack address
range.

Signed-off-by: Robin Holt <holt@sgi.com>
Signed-off-by: Tony Luck <tony.luck@intel.com>
2007-05-22 10:14:36 -07:00
Sam Ravnborg ca967258b6 all-archs: consolidate .data section definition in asm-generic
With this consolidation we can now modify the .data
section definition in one spot for all archs.

Signed-off-by: Sam Ravnborg <sam@ravnborg.org>
2007-05-19 09:11:57 +02:00
Sam Ravnborg 7664709b44 all-archs: consolidate .text section definition in asm-generic
Move definition of .text section to asm-generic.

Signed-off-by: Sam Ravnborg <sam@ravnborg.org>
2007-05-19 09:11:57 +02:00
Tony Luck a8c8be08e0 [IA64] Yet another section mismatch warning
reference to .init.data: from .text between 'sn_cpu_init' (at offset 0x1411) and 'nasid_slice_to_cpuid'
reference to .init.data: from .text between 'sn_cpu_init' (at offset 0x1420) and 'nasid_slice_to_cpuid'

The offending .init.data object is shub_1_1_found which should be declared
in __cpuinitdata, not in __initdata

Signed-off-by: Tony Luck <tony.luck@intel.com>
2007-05-18 15:11:34 -07:00
Christoph Hellwig 576fe0bd7e [IA64] optimize pagefaults a little
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>
2007-05-16 09:00:51 -07:00
Martin Michlmayr 17028c5c91 [IA64] Fix section conflict of ia64_mlogbuf_finish
Building with GCC 4.2, I get the following error:

  CC      arch/ia64/kernel/mca.o
arch/ia64/kernel/mca.c:275: error: __ksymtab_ia64_mlogbuf_finish causes a
section type conflict

This is because ia64_mlogbuf_finish is both declared static and exported.
Fix by removing the export (which is unneeded now).

Signed-off-by: Martin Michlmayr <tbm@cyrius.com>
Signed-off-by: Tony Luck <tony.luck@intel.com>
2007-05-15 13:38:13 -07:00
Tony Luck c47953cfc6 [IA64] s/scalibility/scalability/
Previous spelling patch from Simon Arlott broke one spot that
didn't need fixing (reported by Simon within 35 minutes of the
patch ... but not until after I'd applied to GIT and pushed :-(

Signed-off-by: Tony Luck <tony.luck@intel.com>
2007-05-14 15:57:39 -07:00
Jay Lan 311f594dec [IA64] kdump on INIT needs multi-nodes sync-up (v.2)
The current implementation of kdump on INIT events would enter
kdump processing on DIE_INIT_MONARCH_ENTER and DIE_INIT_SLAVE_ENTER
events. Thus, the monarch cpu would go ahead and boot up the kdump

On SN shub2 systems, this out-of-sync situation causes some slave
cpus on different nodes to enter POD.

This patch moves kdump entry points to DIE_INIT_MONARCH_LEAVE and
DIE_INIT_SLAVE_LEAVE. It also sets kdump_in_progress variable in
the DIE_INIT_MONARCH_PROCESS event to not dump all active stack
traces to the console in the case of kdump.

I have tested this patch on an SN machine and a HP RX2600.

Signed-off-by: Jay Lan <jlan@sgi.com>
Acked-by: Zou Nan hai <nanhai.zou@intel.com>
Signed-off-by: Tony Luck <tony.luck@intel.com>
2007-05-14 15:55:39 -07:00
Tony Luck ae67e498a5 [IA64] wire up {signal,timer,event}fd syscalls
Signed-off-by: Tony Luck <tony.luck@intel.com>
2007-05-14 15:55:11 -07:00
Simon Arlott 72fdbdce3d [IA64] spelling fixes: arch/ia64/
Spelling and apostrophe fixes in arch/ia64/.

Signed-off-by: Simon Arlott <simon@fire.lp0.eu>
Signed-off-by: Tony Luck <tony.luck@intel.com>
2007-05-11 14:55:43 -07:00
Linus Torvalds 2a383c63ff Merge branch 'release' of git://git.kernel.org/pub/scm/linux/kernel/git/aegl/linux-2.6
* 'release' of git://git.kernel.org/pub/scm/linux/kernel/git/aegl/linux-2.6:
  [IA64] Quicklist support for IA64
  [IA64] fix Kprobes reentrancy
  [IA64] SN: validate smp_affinity mask on intr redirect
  [IA64] drivers/char/snsc_event.c:206: warning: unused variable `p'
  [IA64] mca.c:121: warning: 'cpe_poll_timer' defined but not used
  [IA64] Fix - Section mismatch: reference to .init.data:mvec_name
  [IA64] more warning cleanups
  [IA64] Wire up epoll_pwait and utimensat
  [IA64] Fix warnings resulting from type-checking in dev_dbg()
  [IA64] typo s/kenrel/kernel/
2007-05-11 12:53:21 -07:00
Christoph Lameter 2bd62a40f6 [IA64] Quicklist support for IA64
IA64 is the origin of the quicklist implementation.  So cut out the pieces
that are now in core code and modify the functions called.

Signed-off-by: Christoph Lameter <clameter@sgi.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Tony Luck <tony.luck@intel.com>
2007-05-11 09:40:00 -07:00
Anil S Keshavamurthy cdc7dbdfe6 [IA64] fix Kprobes reentrancy
In case of reentrance i.e when a probe handler calls a functions which
inturn has a probe, we save a previous kprobe information and just single
step the reentrant probe without calling the actual probe handler.  During
this reentracy period, if an interrupt occurs and if probe happens to
trigger in the inturrupt path, then we were corrupting the previous kprobe(
as we were overriding the previous kprobe info) info their by crashing the
system.  This patch fixes this issues by having a an array of previous
kprobe info struct(with the array size of 2).

This similar technique is not needed on i386 and x86_64 because by default
interrupts are turn off in the break/int3 exception handler.

Signed-off-by: Anil S Keshavamurthy <anil.s.keshavamurthy@intel.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Tony Luck <tony.luck@intel.com>
2007-05-11 09:38:40 -07:00
John Keller 25d61578da [IA64] SN: validate smp_affinity mask on intr redirect
On SN, only allow one bit to be set in the smp_affinty mask when
redirecting an interrupt.  Currently setting multiple bits is allowed, but
only the first bit is used in determining the CPU to redirect to.  This has
caused confusion among some customers.

[akpm@linux-foundation.org: fixes]
Signed-off-by: John Keller <jpk@sgi.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Tony Luck <tony.luck@intel.com>
2007-05-11 09:35:38 -07:00
Amy Griffis e54dc2431d [PATCH] audit signal recipients
When auditing syscalls that send signals, log the pid and security
context for each target process. Optimize the data collection by
adding a counter for signal-related rules, and avoiding allocating an
aux struct unless we have more than one target process. For process
groups, collect pid/context data in blocks of 16. Move the
audit_signal_info() hook up in check_kill_permission() so we audit
attempts where permission is denied.

Signed-off-by: Amy Griffis <amy.griffis@hp.com>
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
2007-05-11 05:38:25 -04:00
Amy Griffis 7f13da40e3 [PATCH] add SIGNAL syscall class (v3)
Add a syscall class for sending signals.

Signed-off-by: Amy Griffis <amy.griffis@hp.com>
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
2007-05-11 05:38:25 -04:00
Tony Luck 34eac2abcb [IA64] mca.c:121: warning: 'cpe_poll_timer' defined but not used
Only shows up while building sim_defconfig because CONFIG_ACPI=n
there, and all of the uses of cpe_poll_timer are inside #ifdef CONFIG_ACPI.

Signed-off-by: Tony Luck <tony.luck@intel.com>
2007-05-10 13:20:19 -07:00
Tony Luck 9a86bbb90f [IA64] Fix - Section mismatch: reference to .init.data:mvec_name
machvec_init() should be __init.  And then so should hwsw_init().

Signed-off-by: Tony Luck <tony.luck@intel.com>
2007-05-10 11:57:58 -07:00
Tony Luck b9ae3bd255 [IA64] more warning cleanups
arch/ia64/sn/kernel/xpc_partition.c:578: warning: long unsigned int format, different type arg (arg 3)
arch/ia64/sn/kernel/xpnet.c:349: warning: int format, different type arg (arg 7)
arch/ia64/sn/kernel/xpnet.c:349: warning: int format, different type arg (arg 8)

Signed-off-by: Tony Luck <tony.luck@intel.com>
2007-05-10 11:47:38 -07:00
Tony Luck 472118e63d [IA64] Wire up epoll_pwait and utimensat
Another day, another pair of new system calls.

Signed-off-by: Tony Luck <tony.luck@intel.com>
2007-05-10 09:44:42 -07:00
Tony Luck 34ef30ca4a [IA64] Fix warnings resulting from type-checking in dev_dbg()
Lots of places where we passed a "struct pci_device *" rather than
a "struct device *".  One place where we used a "%s" in the format,
but forgot to provide an argument.

Acked-by: John Keller <jpk@sgi.com>
Signed-off-by: Tony Luck <tony.luck@intel.com>
2007-05-10 09:39:41 -07:00
Tony Luck 8ee4dc393b [IA64] typo s/kenrel/kernel/
Spotted by alert reader Robert Day.

Signed-off-by: Tony Luck <tony.luck@intel.com>
2007-05-10 09:35:30 -07:00
akpm@linux-foundation.org 5329571b3c [IA64] sa_interrupt is deprecated
Seems more than just deprecated, we can't build using SA_INTERUPT.

Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Tony Luck <tony.luck@intel.com>
2007-05-09 14:20:59 -07:00
Linus Torvalds 38cb162b75 Merge git://git.kernel.org/pub/scm/linux/kernel/git/aegl/linux-2.6
* git://git.kernel.org/pub/scm/linux/kernel/git/aegl/linux-2.6:
  [IA64] wire up pselect, ppoll
  [IA64] Add TIF_RESTORE_SIGMASK
  [IA64] unwind did not work for processes born with CLONE_STOPPED
  [IA64] Optional method to purge the TLB on SN systems
  [IA64] SPIN_LOCK_UNLOCKED macro cleanup in arch/ia64
  [IA64-SN2][KJ] mmtimer.c-kzalloc
  [IA64] fix stack alignment for ia32 signal handlers
  [IA64] - Altix: hotplug after intr redirect can crash system
  [IA64] save and restore cpus_allowed in cpu_idle_wait
  [IA64] Removal of percpu TR cleanup in kexec code
  [IA64] Fix some section mismatch errors
2007-05-09 13:38:45 -07:00
Linus Torvalds 9a9136e270 Merge git://git.kernel.org/pub/scm/linux/kernel/git/bunk/trivial
* git://git.kernel.org/pub/scm/linux/kernel/git/bunk/trivial: (25 commits)
  sound: convert "sound" subdirectory to UTF-8
  MAINTAINERS: Add cxacru website/mailing list
  include files: convert "include" subdirectory to UTF-8
  general: convert "kernel" subdirectory to UTF-8
  documentation: convert the Documentation directory to UTF-8
  Convert the toplevel files CREDITS and MAINTAINERS to UTF-8.
  remove broken URLs from net drivers' output
  Magic number prefix consistency change to Documentation/magic-number.txt
  trivial: s/i_sem /i_mutex/
  fix file specification in comments
  drivers/base/platform.c: fix small typo in doc
  misc doc and kconfig typos
  Remove obsolete fat_cvf help text
  Fix occurrences of "the the "
  Fix minor typoes in kernel/module.c
  Kconfig: Remove reference to external mqueue library
  Kconfig: A couple of grammatical fixes in arch/i386/Kconfig
  Correct comments in genrtc.c to refer to correct /proc file.
  Fix more "deprecated" spellos.
  Fix "deprecated" typoes.
  ...

Fix trivial comment conflict in kernel/relay.c.
2007-05-09 12:54:17 -07:00
Roman Zippel f7e4217b00 rename thread_info to stack
This finally renames the thread_info field in task structure to stack, so that
the assumptions about this field are gone and archs have more freedom about
placing the thread_info structure.

Nonbroken archs which have a proper thread pointer can do the access to both
current thread and task structure via a single pointer.

It'll allow for a few more cleanups of the fork code, from which e.g.  ia64
could benefit.

Signed-off-by: Roman Zippel <zippel@linux-m68k.org>
[akpm@linux-foundation.org: build fix]
Cc: Richard Henderson <rth@twiddle.net>
Cc: Ivan Kokshaysky <ink@jurassic.park.msu.ru>
Cc: Russell King <rmk@arm.linux.org.uk>
Cc: Ian Molton <spyro@f2s.com>
Cc: Haavard Skinnemoen <hskinnemoen@atmel.com>
Cc: Mikael Starvik <starvik@axis.com>
Cc: David Howells <dhowells@redhat.com>
Cc: Yoshinori Sato <ysato@users.sourceforge.jp>
Cc: "Luck, Tony" <tony.luck@intel.com>
Cc: Hirokazu Takata <takata@linux-m32r.org>
Cc: Geert Uytterhoeven <geert@linux-m68k.org>
Cc: Roman Zippel <zippel@linux-m68k.org>
Cc: Greg Ungerer <gerg@uclinux.org>
Cc: Ralf Baechle <ralf@linux-mips.org>
Cc: Ralf Baechle <ralf@linux-mips.org>
Cc: Paul Mackerras <paulus@samba.org>
Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Cc: Heiko Carstens <heiko.carstens@de.ibm.com>
Cc: Martin Schwidefsky <schwidefsky@de.ibm.com>
Cc: Paul Mundt <lethal@linux-sh.org>
Cc: Kazumoto Kojima <kkojima@rr.iij4u.or.jp>
Cc: Richard Curnow <rc@rc0.org.uk>
Cc: William Lee Irwin III <wli@holomorphy.com>
Cc: "David S. Miller" <davem@davemloft.net>
Cc: Jeff Dike <jdike@addtoit.com>
Cc: Paolo 'Blaisorblade' Giarrusso <blaisorblade@yahoo.it>
Cc: Miles Bader <uclinux-v850@lsi.nec.co.jp>
Cc: Andi Kleen <ak@muc.de>
Cc: Chris Zankel <chris@zankel.net>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2007-05-09 12:30:56 -07:00
Rafael J. Wysocki 8bb7844286 Add suspend-related notifications for CPU hotplug
Since nonboot CPUs are now disabled after tasks and devices have been
frozen and the CPU hotplug infrastructure is used for this purpose, we need
special CPU hotplug notifications that will help the CPU-hotplug-aware
subsystems distinguish normal CPU hotplug events from CPU hotplug events
related to a system-wide suspend or resume operation in progress.  This
patch introduces such notifications and causes them to be used during
suspend and resume transitions.  It also changes all of the
CPU-hotplug-aware subsystems to take these notifications into consideration
(for now they are handled in the same way as the corresponding "normal"
ones).

[oleg@tv-sign.ru: cleanups]
Signed-off-by: Rafael J. Wysocki <rjw@sisk.pl>
Cc: Gautham R Shenoy <ego@in.ibm.com>
Cc: Pavel Machek <pavel@ucw.cz>
Signed-off-by: Oleg Nesterov <oleg@tv-sign.ru>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2007-05-09 12:30:56 -07:00
David Sterba 3dde6ad8fc Fix trivial typos in Kconfig* files
Fix several typos in help text in Kconfig* files.

Signed-off-by: David Sterba <dave@jikos.cz>
Signed-off-by: Adrian Bunk <bunk@stusta.de>
2007-05-09 07:12:20 +02:00
Alexey Kuznetsov e180583b85 [IA64] wire up pselect, ppoll
Signed-off-by: Alexey Kuznetsov <kuznet@ms2.inr.ac.ru>
Signed-off-by: Alexey Dobriyan <adobriyan@openvz.org>
Signed-off-by: Tony Luck <tony.luck@intel.com>
2007-05-08 15:57:59 -07:00
Alexey Dobriyan 4a177cbf84 [IA64] Add TIF_RESTORE_SIGMASK
Preparation for pselect and ppoll.
ia32 compat code not tested. :-(

Signed-off-by: Alexey Kuznetsov <kuznet@ms2.inr.ac.ru>
Signed-off-by: Alexey Dobriyan <adobriyan@openvz.org>
Signed-off-by: Tony Luck <tony.luck@intel.com>
2007-05-08 14:51:59 -07:00
Kirill Korotaev 690def2141 [IA64] unwind did not work for processes born with CLONE_STOPPED
Minor problem for mainstream. Big problem for checkpoint/restore,
because all the stopped/traced processes are born in this state,
hence they cannot be checkpointed again due to failing unwind.

The problem was identified as assumption in kernel unwind library
that top level frame is different of syscall frame. It is the case
unless process was born with CLONE_STOPPED.

Author: Alexey Kuznetsov <kuznet@ms2.inr.ac.ru>
Signed-Off-By: Alexey Kuznetsov <kuznet@ms2.inr.ac.ru>
Signed-Off-By: Kirill Korotaev <dev@sw.ru>
Signed-off-by: Tony Luck <tony.luck@intel.com>
2007-05-08 14:51:42 -07:00
Jack Steiner 3be44b9cc3 [IA64] Optional method to purge the TLB on SN systems
This patch adds an optional method for purging the TLB on SN IA64 systems.
The change should not affect any non-SN system.

Signed-off-by: Jack Steiner <steiner@sgi.com>
Signed-off-by: Tony Luck <tony.luck@intel.com>
2007-05-08 14:50:43 -07:00
Milind Arun Choudhary 8737d59579 [IA64] SPIN_LOCK_UNLOCKED macro cleanup in arch/ia64
SPIN_LOCK_UNLOCKED macro cleanup, use __SPIN_LOCK_UNLOCKED instead.

Signed-off-by: Milind Arun Choudhary <milindchoudhary@gmail.com>
Signed-off-by: Tony Luck <tony.luck@intel.com>
2007-05-08 12:00:39 -07:00
Markus F.X.J. Oberhumer 66761522a7 [IA64] fix stack alignment for ia32 signal handlers
This fixes the setup of the alignment of the signal frame, so that all
signal handlers are run with a properly aligned stack frame.

The current code "over-aligns" the stack pointer so that the stack frame
is effectively always mis-aligned by 4 bytes.  But what we really want
is that on function entry ((sp + 4) & 15) == 0, which matches what would
happen if the stack were aligned before a "call" instruction.

i386 and x86_64 are already fixed by d347f37227

Signed-off-by: Markus F.X.J. Oberhumer <markus@oberhumer.com>
Signed-off-by: Tony Luck <tony.luck@intel.com>
2007-05-08 11:22:59 -07:00
Bernhard Walle d217c265dc Add IRQF_IRQPOLL flag on IA64
Add IRQF_IRQPOLL for the timer interrupt on IA64.

Signed-off-by: Bernhard Walle <bwalle@suse.de>
Cc: "Luck, Tony" <tony.luck@intel.com>
Cc: Ingo Molnar <mingo@elte.hu>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: Alan Cox <alan@lxorguk.ukuu.org.uk>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2007-05-08 11:15:22 -07:00
Ananth N Mavinakayanahalli bf8f6e5b3e Kprobes: The ON/OFF knob thru debugfs
This patch provides a debugfs knob to turn kprobes on/off

o A new file /debug/kprobes/enabled indicates if kprobes is enabled or
  not (default enabled)
o Echoing 0 to this file will disarm all installed probes
o Any new probe registration when disabled will register the probe but
  not arm it. A message will be printed out in such a case.
o When a value 1 is echoed to the file, all probes (including ones
  registered in the intervening period) will be enabled
o Unregistration will happen irrespective of whether probes are globally
  enabled or not.
o Update Documentation/kprobes.txt to reflect these changes. While there
  also update the doc to make it current.

We are also looking at providing sysrq key support to tie to the disabling
feature provided by this patch.

[akpm@linux-foundation.org: Use bool like a bool!]
[akpm@linux-foundation.org: add printk facility levels]
[cornelia.huck@de.ibm.com: Add the missing arch_trampoline_kprobe() for s390]
Signed-off-by: Ananth N Mavinakayanahalli <ananth@in.ibm.com>
Signed-off-by: Srinivasa DS <srinivasa@in.ibm.com>
Signed-off-by: Cornelia Huck <cornelia.huck@de.ibm.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2007-05-08 11:15:19 -07:00
Christoph Hellwig 4c4308cb93 kprobes: kretprobes simplifications
- consolidate duplicate code in all arch_prepare_kretprobe instances
   into common code
 - replace various odd helpers that use hlist_for_each_entry to get
   the first elemenet of a list with either a hlist_for_each_entry_save
   or an opencoded access to the first element in the caller
 - inline add_rp_inst into it's only remaining caller
 - use kretprobe_inst_table_head instead of opencoding it

Signed-off-by: Christoph Hellwig <hch@lst.de>
Cc: Prasanna S Panchamukhi <prasanna@in.ibm.com>
Acked-by: Ananth N Mavinakayanahalli <ananth@in.ibm.com>
Cc: Anil S Keshavamurthy <anil.s.keshavamurthy@intel.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2007-05-08 11:15:19 -07:00
Bjorn Helgaas 873ec74615 EFI: warn only for pre-1.00 system tables
We used to warn unless the EFI system table major revision was exactly 1.
But EFI 2.00 firmware is starting to appear, and the 2.00 changes don't
affect anything in Linux.

Signed-off-by: Bjorn Helgaas <bjorn.helgaas@hp.com>
Cc: Andi Kleen <ak@suse.de>
Cc: "Luck, Tony" <tony.luck@intel.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2007-05-08 11:15:10 -07:00
Ananth N Mavinakayanahalli 0f95b7fc83 Kprobes: print details of kretprobe on assertion failure
In certain cases like when the real return address can't be found or when
the number of tracked calls to a kretprobed function is less than the
number of returns, we may not be able to find the correct return address
after processing a kretprobe.  Currently we just do a BUG_ON, but no
information is provided about the actual failing kretprobe.

Print out details of the kretprobe before calling BUG().

Signed-off-by: Ananth N Mavinakayanahalli <ananth@in.ibm.com>
Cc: Prasanna S Panchamukhi <prasanna@in.ibm.com>
Cc: Jim Keniston <jkenisto@us.ibm.com>
Cc: Anil S Keshavamurthy <anil.s.keshavamurthy@intel.com>
Cc: Maneesh Soni <maneesh@in.ibm.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2007-05-08 11:15:08 -07:00
Simon Horman 6672f76a5a kdump/kexec: calculate note size at compile time
Currently the size of the per-cpu region reserved to save crash notes is
set by the per-architecture value MAX_NOTE_BYTES.  Which in turn is
currently set to 1024 on all supported architectures.

While testing ia64 I recently discovered that this value is in fact too
small.  The particular setup I was using actually needs 1172 bytes.  This
lead to very tedious failure mode where the tail of one elf note would
overwrite the head of another if they ended up being alocated sequentially
by kmalloc, which was often the case.

It seems to me that a far better approach is to caclculate the size that
the area needs to be.  This patch does just that.

If a simpler stop-gap patch for ia64 to be squeezed into 2.6.21(.X) is
needed then this should be as easy as making MAX_NOTE_BYTES larger in
arch/asm-ia64/kexec.h.  Perhaps 2048 would be a good choice.  However, I
think that the approach in this patch is a much more robust idea.

Acked-by:  Vivek Goyal <vgoyal@in.ibm.com>
Signed-off-by: Simon Horman <horms@verge.net.au>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2007-05-08 11:15:07 -07:00
Randy Dunlap e63340ae6b header cleaning: don't include smp_lock.h when not used
Remove includes of <linux/smp_lock.h> where it is not used/needed.
Suggested by Al Viro.

Builds cleanly on x86_64, i386, alpha, ia64, powerpc, sparc,
sparc64, and arm (all 59 defconfigs).

Signed-off-by: Randy Dunlap <randy.dunlap@oracle.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2007-05-08 11:15:07 -07:00
Christoph Hellwig 1eeb66a1bb move die notifier handling to common code
This patch moves the die notifier handling to common code.  Previous
various architectures had exactly the same code for it.  Note that the new
code is compiled unconditionally, this should be understood as an appel to
the other architecture maintainer to implement support for it aswell (aka
sprinkling a notify_die or two in the proper place)

arm had a notifiy_die that did something totally different, I renamed it to
arm_notify_die as part of the patch and made it static to the file it's
declared and used at.  avr32 used to pass slightly less information through
this interface and I brought it into line with the other architectures.

[akpm@linux-foundation.org: build fix]
[akpm@linux-foundation.org: fix vmalloc_sync_all bustage]
[bryan.wu@analog.com: fix vmalloc_sync_all in nommu]
Signed-off-by: Christoph Hellwig <hch@lst.de>
Cc: <linux-arch@vger.kernel.org>
Cc: Russell King <rmk@arm.linux.org.uk>
Signed-off-by: Bryan Wu <bryan.wu@analog.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2007-05-08 11:15:04 -07:00
Akinobu Mita 0e6b9c98be use SLAB_PANIC flag cleanup
Use SLAB_PANIC and delete duplicated panic().

Signed-off-by: Akinobu Mita <akinobu.mita@gmail.com>
Cc: Ian Molton <spyro@f2s.com>
Cc: David Howells <dhowells@redhat.com>
Cc: Andi Kleen <ak@suse.de>
Cc: Paul Mackerras <paulus@samba.org>
Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Cc: Paul Mundt <lethal@linux-sh.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2007-05-08 11:14:57 -07:00
Yasunori Goto a3142c8e1d Fix section mismatch of memory hotplug related code.
This is to fix many section mismatches of code related to memory hotplug.
I checked compile with memory hotplug on/off on ia64 and x86-64 box.

Signed-off-by: Yasunori Goto <y-goto@jp.fujitsu.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2007-05-08 11:14:57 -07:00
John Keller 0e17b56098 [IA64] - Altix: hotplug after intr redirect can crash system
When redirecting a device interrupt on SN, not all links
between platform specific structures are being updated.
This can result in a system crash if an interrupt
redirection is followed by an unplug of that device.

The complete fix also requires a prom update. Though,
this patch is backward compatable and not dependent on
the prom patch.

Signed-off-by: John Keller <jpk@sgi.com>
Signed-off-by: Tony Luck <tony.luck@intel.com>
2007-05-08 11:06:41 -07:00
Siddha, Suresh B bb8416bf8b [IA64] save and restore cpus_allowed in cpu_idle_wait
Save and Restore the task's cpus_allowed mask, across the set_cpus_allowed()
in cpu_idle_wait(). Without this, we will endup corrupting task's cpu affinity.

Signed-off-by: Suresh Siddha <suresh.b.siddha@intel.com>
Signed-off-by: Tony Luck <tony.luck@intel.com>
2007-05-08 10:01:25 -07:00
Tony Luck 9d1d4cc89f [IA64] Removal of percpu TR cleanup in kexec code
The kexec code wasn't in the kernel when Ken Chen created
this patch (00b65985fb) to
change the mapping of percpu area from a TR to a TC.

Zou Nanhai spotted this extra piece, and Simon Horman
concurred.

Signed-off-by: Tony Luck <tony.luck@intel.com>
2007-05-08 10:00:28 -07:00
Tony Luck 0f7ac29e59 [IA64] Fix some section mismatch errors
Section mismatch: reference to ...

 .init.text:prefill_possible_map from .text between 'setup_per_cpu_areas' and 'cpu_init'
 .init.text:iosapic_override_isa_irq from .text between 'iosapic_init' and 'iosapic_remove'

Signed-off-by: Tony Luck <tony.luck@intel.com>
2007-05-07 13:17:00 -07:00
Linus Torvalds a989705c4c Merge git://git.kernel.org/pub/scm/linux/kernel/git/aegl/linux-2.6
* git://git.kernel.org/pub/scm/linux/kernel/git/aegl/linux-2.6:
  [IA64] update memory attribute aliasing documentation & test cases
  [IA64] fail mmaps that span areas with incompatible attributes
  [IA64] allow WB /sys/.../legacy_mem mmaps
  [IA64] make ioremap avoid unsupported attributes
  [IA64] rename ioremap variables to match i386
  [IA64] relax per-cpu TLB requirement to DTC
  [IA64] remove per-cpu ia64_phys_stacked_size_p8
  [IA64] Fix example error injection program
  [IA64] Itanium MC Error Injection Tool: pal_mc_error_inject() interface
  [IA64] Itanium MC Error Injection Tool: Makefile changes
  [IA64] Itanium MC Error Injection Tool: Driver sysfs interface
  [IA64] Itanium MC Error Injection Tool: Doc and sample application
  [IA64] Itanium MC Error Injection Tool: Kernel configuration
2007-05-07 12:34:57 -07:00
Benjamin Herrenschmidt afa37394d6 get_unmapped_area handles MAP_FIXED on ia64
Handle MAP_FIXED in ia64 arch_get_unmapped_area and
hugetlb_get_unmapped_area(), just call prepare_hugepage_range in the later and
is_hugepage_only_range() in the former.

Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Acked-by: William Irwin <bill.irwin@oracle.com>
Cc: "Luck, Tony" <tony.luck@intel.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2007-05-07 12:12:56 -07:00
Christoph Lameter d85f33855c Make page->private usable in compound pages
If we add a new flag so that we can distinguish between the first page and the
tail pages then we can avoid to use page->private in the first page.
page->private == page for the first page, so there is no real information in
there.

Freeing up page->private makes the use of compound pages more transparent.
They become more usable like real pages.  Right now we have to be careful f.e.
 if we are going beyond PAGE_SIZE allocations in the slab on i386 because we
can then no longer use the private field.  This is one of the issues that
cause us not to support debugging for page size slabs in SLAB.

Having page->private available for SLUB would allow more meta information in
the page struct.  I can probably avoid the 16 bit ints that I have in there
right now.

Also if page->private is available then a compound page may be equipped with
buffer heads.  This may free up the way for filesystems to support larger
blocks than page size.

We add PageTail as an alias of PageReclaim.  Compound pages cannot currently
be reclaimed.  Because of the alias one needs to check PageCompound first.

The RFC for the this approach was discussed at
http://marc.info/?t=117574302800001&r=1&w=2

[nacc@us.ibm.com: fix hugetlbfs]
Signed-off-by: Christoph Lameter <clameter@sgi.com>
Signed-off-by: Nishanth Aravamudan <nacc@us.ibm.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2007-05-07 12:12:53 -07:00
Michael Ellerman 7fe3730de7 MSI: arch must connect the irq and the msi_desc
set_irq_msi() currently connects an irq_desc to an msi_desc. The archs call
it at some point in their setup routine, and then the generic code sets up the
reverse mapping from the msi_desc back to the irq.

set_irq_msi() should do both connections, making it the one and only call
required to connect an irq with it's MSI desc and vice versa.

The arch code MUST call set_irq_msi(), and it must do so only once it's sure
it's not going to fail the irq allocation.

Given that there's no need for the arch to return the irq anymore, the return
value from the arch setup routine just becomes 0 for success and anything else
for failure.

Signed-off-by: Michael Ellerman <michael@ellerman.id.au>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2007-05-02 19:02:38 -07:00
Dan Williams f282b97021 msi: introduce ARCH_SUPPORTS_MSI Kconfig option (rev2)
Allows architectures to advertise that they support MSI rather than listing
each architecture as a PCI_MSI dependency.

Signed-off-by: Dan Williams <dan.j.williams@intel.com>
Acked-by: "Eric W. Biederman" <ebiederm@xmission.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2007-05-02 19:02:37 -07:00
Jean Delvare 6473d160b4 PCI: Cleanup the includes of <linux/pci.h>
I noticed that many source files include <linux/pci.h> while they do
not appear to need it. Here is an attempt to clean it all up.

In order to find all possibly affected files, I searched for all
files including <linux/pci.h> but without any other occurence of "pci"
or "PCI". I removed the include statement from all of these, then I
compiled an allmodconfig kernel on both i386 and x86_64 and fixed the
false positives manually.

My tests covered 66% of the affected files, so there could be false
positives remaining. Untested files are:

arch/alpha/kernel/err_common.c
arch/alpha/kernel/err_ev6.c
arch/alpha/kernel/err_ev7.c
arch/ia64/sn/kernel/huberror.c
arch/ia64/sn/kernel/xpnet.c
arch/m68knommu/kernel/dma.c
arch/mips/lib/iomap.c
arch/powerpc/platforms/pseries/ras.c
arch/ppc/8260_io/enet.c
arch/ppc/8260_io/fcc_enet.c
arch/ppc/8xx_io/enet.c
arch/ppc/syslib/ppc4xx_sgdma.c
arch/sh64/mach-cayman/iomap.c
arch/xtensa/kernel/xtensa_ksyms.c
arch/xtensa/platform-iss/setup.c
drivers/i2c/busses/i2c-at91.c
drivers/i2c/busses/i2c-mpc.c
drivers/media/video/saa711x.c
drivers/misc/hdpuftrs/hdpu_cpustate.c
drivers/misc/hdpuftrs/hdpu_nexus.c
drivers/net/au1000_eth.c
drivers/net/fec_8xx/fec_main.c
drivers/net/fec_8xx/fec_mii.c
drivers/net/fs_enet/fs_enet-main.c
drivers/net/fs_enet/mac-fcc.c
drivers/net/fs_enet/mac-fec.c
drivers/net/fs_enet/mac-scc.c
drivers/net/fs_enet/mii-bitbang.c
drivers/net/fs_enet/mii-fec.c
drivers/net/ibm_emac/ibm_emac_core.c
drivers/net/lasi_82596.c
drivers/parisc/hppb.c
drivers/sbus/sbus.c
drivers/video/g364fb.c
drivers/video/platinumfb.c
drivers/video/stifb.c
drivers/video/valkyriefb.c
include/asm-arm/arch-ixp4xx/dma.h
sound/oss/au1550_ac97.c

I would welcome test reports for these files. I am fine with removing
the untested files from the patch if the general opinion is that these
changes aren't safe. The tested part would still be nice to have.

Note that this patch depends on another header fixup patch I submitted
to LKML yesterday:
  [PATCH] scatterlist.h needs types.h
  http://lkml.org/lkml/2007/3/01/141

Signed-off-by: Jean Delvare <khali@linux-fr.org>
Cc: Badari Pulavarty <pbadari@us.ibm.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2007-05-02 19:02:35 -07:00
Tony Luck d29182534c Pull mem-attribute into release branch 2007-04-30 13:56:17 -07:00
Tony Luck b643b0fdbc Pull percpu-dtc into release branch 2007-04-30 13:56:00 -07:00