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* slab allocators: Remove SLAB_DEBUG_INITIAL flagChristoph Lameter2007-05-071-2/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | I have never seen a use of SLAB_DEBUG_INITIAL. It is only supported by SLAB. I think its purpose was to have a callback after an object has been freed to verify that the state is the constructor state again? The callback is performed before each freeing of an object. I would think that it is much easier to check the object state manually before the free. That also places the check near the code object manipulation of the object. Also the SLAB_DEBUG_INITIAL callback is only performed if the kernel was compiled with SLAB debugging on. If there would be code in a constructor handling SLAB_DEBUG_INITIAL then it would have to be conditional on SLAB_DEBUG otherwise it would just be dead code. But there is no such code in the kernel. I think SLUB_DEBUG_INITIAL is too problematic to make real use of, difficult to understand and there are easier ways to accomplish the same effect (i.e. add debug code before kfree). There is a related flag SLAB_CTOR_VERIFY that is frequently checked to be clear in fs inode caches. Remove the pointless checks (they would even be pointless without removeal of SLAB_DEBUG_INITIAL) from the fs constructors. This is the last slab flag that SLUB did not support. Remove the check for unimplemented flags from SLUB. Signed-off-by: Christoph Lameter <clameter@sgi.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* Merge master.kernel.org:/pub/scm/linux/kernel/git/gregkh/driver-2.6Linus Torvalds2007-05-041-4/+4
|\ | | | | | | | | | | | | | | | | * master.kernel.org:/pub/scm/linux/kernel/git/gregkh/driver-2.6: remove "struct subsystem" as it is no longer needed sysfs: printk format warning DOC: Fix wrong identifier name in Documentation/driver-model/devres.txt platform: reorder platform_device_del Driver core: fix show_uevent from taking up way too much stack
| * remove "struct subsystem" as it is no longer neededGreg Kroah-Hartman2007-05-021-4/+4
| | | | | | | | | | | | | | | | | | | | | | We need to work on cleaning up the relationship between kobjects, ksets and ktypes. The removal of 'struct subsystem' is the first step of this, especially as it is not really needed at all. Thanks to Kay for fixing the bugs in this patch. Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
* | Merge master.kernel.org:/pub/scm/linux/kernel/git/gregkh/pci-2.6Linus Torvalds2007-05-041-1/+0
|\ \ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | * master.kernel.org:/pub/scm/linux/kernel/git/gregkh/pci-2.6: (59 commits) PCI: Free resource files in error path of pci_create_sysfs_dev_files() pci-quirks: disable MSI on RS400-200 and RS480 PCI hotplug: Use menuconfig objects PCI: ZT5550 CPCI Hotplug driver fix PCI: rpaphp: Remove semaphores PCI: rpaphp: Ensure more pcibios_add/pcibios_remove symmetry PCI: rpaphp: Use pcibios_remove_pci_devices() symmetrically PCI: rpaphp: Document is_php_dn() PCI: rpaphp: Document find_php_slot() PCI: rpaphp: Rename rpaphp_register_pci_slot() to rpaphp_enable_slot() PCI: rpaphp: refactor tail call to rpaphp_register_slot() PCI: rpaphp: remove rpaphp_set_attention_status() PCI: rpaphp: remove print_slot_pci_funcs() PCI: rpaphp: Remove setup_pci_slot() PCI: rpaphp: remove a call that does nothing but a pointer lookup PCI: rpaphp: Remove another wrappered function PCI: rpaphp: Remve another call that is a wrapper PCI: rpaphp: remove a function that does nothing but wrap debug printks PCI: rpaphp: Remove un-needed goto PCI: rpaphp: Fix a memleak; slot->location string was never freed ...
| * | PCI: Cleanup the includes of <linux/pci.h>Jean Delvare2007-05-021-1/+0
| |/ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | 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>
* | i2c: Cleanup the includes of <linux/i2c.h>Jean Delvare2007-05-011-1/+0
|/ | | | | | | Clean up the includes of <linux/i2c.h>. Only include this header file when we actually need it. Signed-off-by: Jean Delvare <khali@linux-fr.org>
* [POWERPC] Avoid putting cpu node twiceJohn Rigby2007-04-301-2/+4
| | | | | | | | | | Call of_find_node_by_type with NULL instead of np so the cpu node does not get put twice. This was causing kref_put warnings. Signed-off-by: John Rigby <jrigby@freescale.com> Acked-by: Sylvain Munaut <tnt@246tNt.com> Signed-off-by: Paul Mackerras <paulus@samba.org>
* [POWERPC] Spinlock initializer cleanupThomas Gleixner2007-04-302-2/+2
| | | | | | | | Use DEFINE_SPINLOCK instead of initializing spinlocks to SPIN_LOCK_UNLOCKED, since DEFINE_SPINLOCK is better for lockdep. Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Signed-off-by: Paul Mackerras <paulus@samba.org>
* [POWERPC] get_property cleanupsStephen Rothwell2007-04-303-10/+11
| | | | | | | Just another pass through arch/powerpc for old usages. Signed-off-by: Stephen Rothwell <sfr@canb.auug.org.au> Signed-off-by: Paul Mackerras <paulus@samba.org>
* [POWERPC] cell: cbe_cpufreq cleanup and crash fixOlof Johansson2007-04-301-10/+14
| | | | | | | | | | | | | cbe_cpufreq cleanups: * comment format * whitespace * don't init on non-cell platforms Signed-off-by: Olof Johansson <olof@lixom.net> Acked-by: Christian Krafft <krafft@de.ibm.com> Signed-off-by: Arnd Bergmann <arnd.bergmann@de.ibm.com> Signed-off-by: Paul Mackerras <paulus@samba.org>
* [POWERPC] Clean up cpufreq Kconfig dependenciesOlof Johansson2007-04-301-6/+6
| | | | | | | | | | Shuffle Kconfig order, making the platform drivers menu depend on the global option instead of each driver being dependent on it. Also fix dependency of PPC_PMAC on the G5 one. Signed-off-by: Olof Johansson <olof@lixom.net> Signed-off-by: Paul Mackerras <paulus@samba.org>
* Revert "[POWERPC] Autodetect serial console on efika"Paul Mackerras2007-04-301-26/+0
| | | | | | | | | This reverts commit 9414715a7bbb45450015e9bc2676d85d919d08d4, at Olaf Hering's request: > Paul, please discard this patch. The optional graphics card may have > also device_type 'serial' if it is in VGA mode. > I will send an updated patch later.
* [POWERPC] Generic check_legacy_ioportOlaf Hering2007-04-276-74/+0
| | | | | | | | | | | check_legacy_ioport makes only sense on PREP, CHRP and pSeries. They may have an isa node with PS/2, parport, floppy and serial ports. Remove the check_legacy_ioport call from ppc_md, it's not needed anymore. Hardware capabilities come from the device-tree. Signed-off-by: Olaf Hering <olaf@aepfle.de> Signed-off-by: Paul Mackerras <paulus@samba.org>
* [POWERPC] pasemi: Cpufreq driverOlof Johansson2007-04-275-0/+335
| | | | | | | | Cpufreq driver for PA Semi PWRficient processors. Signed-off-by: Egor Martovetsky <egor@pasemi.com> Signed-off-by: Olof Johansson <olof@lixom.net> Signed-off-by: Paul Mackerras <paulus@samba.org>
* [POWERPC] pasemi: Kconfig for gpio_mdioOlof Johansson2007-04-272-2/+9
| | | | | | | | | arch/powerpc/platforms/pasemi/gpio_mdio.c really depends on CONFIG_PHYLIB. Add a config option for it, allow for it to be disabled if needed and fix the dependency. Signed-off-by: Olof Johansson <olof@lixom.net> Signed-off-by: Paul Mackerras <paulus@samba.org>
* [POWERPC] pasemi: Remove build warningOlof Johansson2007-04-271-0/+1
| | | | | | | | arch/powerpc/platforms/pasemi/setup.c: In function 'pasemi_publish_devices': arch/powerpc/platforms/pasemi/setup.c:220: warning: implicit declaration of function 'of_platform_bus_probe' Signed-off-by: Olof Johansson <olof@lixom.net> Signed-off-by: Paul Mackerras <paulus@samba.org>
* [POWERPC] Remove old interface find_devicesStephen Rothwell2007-04-247-44/+76
| | | | | | | Replace uses with of_find_node_by_name and for_each_node_by_name. Signed-off-by: Stephen Rothwell <sfr@canb.auug.org.au> Signed-off-by: Paul Mackerras <paulus@samba.org>
* [POWERPC] Remove old interface find_type_devicesStephen Rothwell2007-04-243-5/+9
| | | | | | | Replaced by of_find_node_by_type. Signed-off-by: Stephen Rothwell <sfr@canb.auug.org.au> Signed-off-by: Paul Mackerras <paulus@samba.org>
* [POWERPC] Remove old interface find_path_deviceStephen Rothwell2007-04-243-17/+33
| | | | | | | Replaced by of_find_node_by_path. Signed-off-by: Stephen Rothwell <sfr@canb.auug.org.au> Signed-off-by: Paul Mackerras <paulus@samba.org>
* [POWERPC] Remove find_compatible_devicesStephen Rothwell2007-04-241-4/+9
| | | | | | | This is an old interface and is replaced by of_find_compatible_node. Signed-off-by: Stephen Rothwell <sfr@canb.auug.org.au> Signed-off-by: Paul Mackerras <paulus@samba.org>
* [POWERPC] Rename MPIC_BROKEN_U3 to MPIC_U3_HT_IRQSMichael Ellerman2007-04-245-5/+5
| | | | | | | | | Rename MPIC_BROKEN_U3 to something a little more descriptive. Its effect is to enable support for HT irqs behind the PCI-X/HT bridge on U3/U4 (aka. CPC9x5) parts. Signed-off-by: Michael Ellerman <michael@ellerman.id.au> Signed-off-by: Paul Mackerras <paulus@samba.org>
* [POWERPC] Re-organize Kconfig code for 4xx in arch/powerpcDavid Gibson2007-04-241-222/+150
| | | | | | | | | | | | | | | | | | | Now that we always take a device tree in arch/powerpc, there's no good reason not to allow a single kernel to support multiple embedded 4xx boards - the correct platform code can be selected based on the device tree information. Therefore, this patch re-arranges the 4xx Kconfig code to allow this. In addition we: - use "select" instead of depends to configure the correct config options for specific 4xx CPUs and workarounds, which makes the information about specific boards and CPUs less scattered. - Some old, unused (in arch/powerpc) config options are removed: WANT_EARLY_SERIAL, IBM_OCP, etc. Signed-off-by: David Gibson <dwg@au1.ibm.com> Signed-off-by: Paul Mackerras <paulus@samba.org>
* [POWERPC] pasemi: GPIO MDIO of_platform driverOlof Johansson2007-04-243-1/+354
| | | | | | | | MDIO driver for PHY's connected via GPIO as on the PA Semi Electra eval board. Signed-off-by: Olof Johansson <olof@lixom.net> Signed-off-by: Paul Mackerras <paulus@samba.org>
* [POWERPC] pasemi: Reset mpic on bootOlof Johansson2007-04-241-1/+1
| | | | | | | | Reset MPIC on boot to clear some timer state that firmware might leave configured. Signed-off-by: Olof Johansson <olof@lixom.net> Signed-off-by: Paul Mackerras <paulus@samba.org>
* [POWERPC] pasemi: Allow 8KB config space for I/O bridgeOlof Johansson2007-04-241-3/+13
| | | | | | | | | | Device 0 function 0 on the root bus is really a two-function bus agent, but only the first function is visible. Because of this, we need to allow config accesses into the second range. Modify the check for valid offsets accordingly. Signed-off-by: Olof Johansson <olof@lixom.net> Signed-off-by: Paul Mackerras <paulus@samba.org>
* [POWERPC] Rename last get_property callsStephen Rothwell2007-04-241-2/+2
| | | | | | | These got added recently. Signed-off-by: Stephen Rothwell <sfr@canb.auug.org.au> Signed-off-by: Paul Mackerras <paulus@samba.org>
* Merge branch 'for-2.6.22' of ↵Paul Mackerras2007-04-245-58/+530
|\ | | | | | | master.kernel.org:/pub/scm/linux/kernel/git/arnd/cell-2.6 into for-2.6.22
| * [POWERPC] cell: enable RTAS-based PTCAL for Cell XDR memoryJeremy Kerr2007-04-231-0/+160
| | | | | | | | | | | | | | | | | | | | | | | | Enable Periodic Recalibration (PTCAL) support for Cell XDR memory, using the new ibm,cbe-start-ptcal and ibm,cbe-stop-ptcal RTAS calls. Tested on QS20 and QS21 (by Thomas Huth). It seems that SLOF has problems disabling, at least on QS20; this patch should only be used once these problems have been addressed. Signed-off-by: Jeremy Kerr <jk@ozlabs.org> Signed-off-by: Arnd Bergmann <arnd.bergmann@de.ibm.com>
| * [POWERPC] cell: add support for proper device-treeChristian Krafft2007-04-231-30/+88
| | | | | | | | | | | | | | | | | | | | | | This patch adds support for a proper device-tree. A porper device-tree on cell contains be nodes for each CBE containg nodes for SPEs and all the other special devices on it. Ofcourse oldschool devicetree is still supported. Signed-off-by: Christian Krafft <krafft@de.ibm.com> Signed-off-by: Arnd Bergmann <arnd.bergmann@de.ibm.com>
| * [POWERPC] cell: use pmi in cpufreq driverChristian Krafft2007-04-231-1/+80
| | | | | | | | | | | | | | | | | | | | The new PMI driver was added in order to support cpufreq on blades that require the frequency to be controlled by the service processor, so use it on those. Signed-off-by: Christian Krafft <krafft@de.ibm.com> Signed-off-by: Arnd Bergmann <arnd.bergmann@de.ibm.com>
| * [POWERPC] cbe_thermal: add throttling attributes to cpu and spu nodesChristian Krafft2007-04-231-1/+154
| | | | | | | | | | | | | | | | | | | | This patch adds some attributes the cpu and spu nodes: /sys/devices/system/[c|s]pu/[c|s]pu*/thermal/throttle_begin /sys/devices/system/[c|s]pu/[c|s]pu*/thermal/throttle_end /sys/devices/system/[c|s]pu/[c|s]pu*/thermal/throttle_full_stop Signed-off-by: Christian Krafft <krafft@de.ibm.com> Signed-off-by: Arnd Bergmann <arnd.bergmann@de.ibm.com>
| * [POWERPC] cbe_thermal: clean up computation of temperatureChristian Krafft2007-04-231-18/+10
| | | | | | | | | | | | | | | | This patch introduces a little function for transforming register values into temperature. Signed-off-by: Christian Krafft <krafft@de.ibm.com> Signed-off-by: Arnd Bergmann <arnd.bergmann@de.ibm.com>
| * [POWERPC] cell: add cbe_node_to_cpu functionChristian Krafft2007-04-232-14/+44
| | | | | | | | | | | | | | | | | | This patch adds code to deal with conversion of logical cpu to cbe nodes. It removes code that assummed there were two logical CPUs per CBE. Signed-off-by: Christian Krafft <krafft@de.ibm.com> Signed-off-by: Arnd Bergmann <arnd.bergmann@de.ibm.com>
* | Merge branch 'spufs' of ↵Paul Mackerras2007-04-2414-366/+589
|\ \ | | | | | | | | | master.kernel.org:/pub/scm/linux/kernel/git/arnd/cell-2.6 into for-2.6.22
| * | [POWERPC] spu_base: fix initialisation on systems with no SPEsJeremy Kerr2007-04-232-3/+10
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | This change fixes the case where spu_base and spufs are initialised on a system with no SPEs - unconditionally create the spu_lists so spu_alloc doesn't explode, and check for spu_management ops before starting spufs. Signed-off-by: Jeremy Kerr <jk@ozlabs.org> Signed-off-by: Arnd Bergmann <arnd.bergmann@de.ibm.com> arch/powerpc/platforms/cell/spu_base.c | 7 ++++--- arch/powerpc/platforms/cell/spufs/inode.c | 5 +++++ 2 files changed, 9 insertions(+), 3 deletions(-)
| * | [POWERPC] spu_base: remove cleanup_spu_baseChristoph Hellwig2007-04-231-37/+10
| | | | | | | | | | | | | | | | | | | | | | | | | | | spu_base.c is always built into the kernel image, so there is no need for a cleanup function. And some of the things it does are in the way for my following patches, so I'd rather get rid of it ASAP. Signed-off-by: Christoph Hellwig <hch@lst.de> Signed-off-by: Arnd Bergmann <arnd.bergmann@de.ibm.com>
| * | [POWERPC] spufs: various run.c cleanupsChristoph Hellwig2007-04-231-20/+31
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | - remove the spu_acquire_runnable from spu_run_init. I need to opencode it in spufs_run_spu in the next patch - remove various inline attributes, we don't really want to inline long functions with multiple callsites - cleanup return values and runcntl_write calls in spu_run_init - use normal kernel codingstyle in spu_reacquire_runnable Signed-off-by: Christoph Hellwig <hch@lst.de> Signed-off-by: Arnd Bergmann <arnd.bergmann@de.ibm.com>
| * | [POWERPC] spufs: enable SPU coredump for kernel-builtin spufsAkinobu Mita2007-04-231-18/+16
| | | | | | | | | | | | | | | | | | | | | | | | | | | spu_coredump_calls.owner is NULL in case of a builtin spufs, so the checks in here break. Check for the availability of the spu_coredump_calls variable instead. Signed-off-by: Arnd Bergmann <arnd.bergmann@de.ibm.com>
| * | [POWERPC] spufs: fix memory leak on coredumpArnd Bergmann2007-04-231-9/+10
| | | | | | | | | | | | | | | | | | | | | | | | Dynamically allocated read/write buffer in spufs_arch_write_note() will not be freed. Convert it to get_free_page at the same time. Cc: Akinobu Mita <mita@fixstars.com> Signed-off-by: Arnd Bergmann <arnd.bergmann@de.ibm.com>
| * | [POWERPC] spufs: Minor cleanup of spu_waitJeremy Kerr2007-04-231-7/+6
| | | | | | | | | | | | | | | | | | | | | Change the loop in spu_wait to be a little more straightforward. Signed-off-by: Jeremy Kerr <jk@ozlabs.org> Signed-off-by: Arnd Bergmann <arnd.bergmann@de.ibm.com>
| * | [POWERPC] spufs: add mode= mount optionJeremy Kerr2007-04-231-4/+10
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Add a 'mode=' option to spufs mount arguments. This allows more control over access to the top-level spufs directory. Tested on Cell. Signed-off-by: Jeremy Kerr <jk@ozlabs.org> Signed-off-by: Arnd Bergmann <arnd.bergmann@de.ibm.com>
| * | [POWERPC] spufs: use memcpy_fromio() to copy from local storeAkinobu Mita2007-04-231-6/+6
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | GCC may generates inline copy loop to handle memcpy() function instead of kernel defined memcpy(). But this inlined version of memcpy() causes an alignment interrupt when copying from local store. This patch uses memcpy_fromio() and memcpy_toio to copy local store to prevent memcpy() being inlined. Signed-off-by: Akinobu Mita <mita@fixstars.com> Signed-off-by: Arnd Bergmann <arnd.bergmann@de.ibm.com>
| * | [POWERPC] spufs: avoid spurious memory barriersChristoph Hellwig2007-04-231-14/+0
| | | | | | | | | | | | | | | | | | | | | | | | | | | We now have proper locking around assignets of the mapping pointers, and the spin_unlock implies enough of a barrier to get rid of the explicit one. Signed-off-by: Christoph Hellwig <hch@lst.de> Signed-off-by: Arnd Bergmann <arnd.bergmann@de.ibm.com>
| * | [POWERPC] spufs: fix memory leak on spufs reloadingAkinobu Mita2007-04-231-0/+6
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | When SPU isolation mode enabled, isolated_loader would be allocated by spufs_init_isolated_loader() on module_init(). But anyone do not free it. This patch introduces spufs_exit_isolated_loader() which is the opposite of spufs_init_isolated_loader() and called on module_exit(). Cc: Arnd Bergmann <arnd@arndb.de> Signed-off-by: Akinobu Mita <mita@fixstars.com> Signed-off-by: Christoph Hellwig <hch@lst.de> Signed-off-by: Arnd Bergmann <arnd.bergmann@de.ibm.com>
| * | [POWERPC] spufs: fix missing error handling in module_init()Akinobu Mita2007-04-231-6/+10
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | spufs module_init forgot to call a few cleanup functions on error path. This patch also includes cosmetic changes in spu_sched_init() (identation fix and return error code). [modified by hch to apply ontop of the latest schedule changes] Cc: Arnd Bergmann <arnd@arndb.de> Signed-off-by: Akinobu Mita <mita@fixstars.com> Signed-off-by: Christoph Hellwig <hch@lst.de> Signed-off-by: Arnd Bergmann <arnd.bergmann@de.ibm.com>
| * | [POWERPC] spufs: check spu_acquire_runnable() return valueAkinobu Mita2007-04-231-1/+4
| | | | | | | | | | | | | | | | | | | | | | | | | | | This patch checks return value of spu_acquire_runnable() in spufs_mfc_write(). Signed-off-by: Akinobu Mita <mita@fixstars.com> Signed-off-by: Christoph Hellwig <hch@lst.de> Signed-off-by: Arnd Bergmann <arnd.bergmann@de.ibm.com>
| * | [POWERPC] spufs: turn run_sema into run_mutexChristoph Hellwig2007-04-233-4/+4
| | | | | | | | | | | | | | | | | | | | | | | | There is no reason for run_sema to be a struct semaphore. Changing it to a mutex and rename it accordingly. Signed-off-by: Christoph Hellwig <hch@lst.de> Signed-off-by: Arnd Bergmann <arnd.bergmann@de.ibm.com>
| * | [POWERPC] spufs: provide siginfo for SPE faultsJeremy Kerr2007-04-231-7/+25
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | This change populates a siginfo struct for SPE application exceptions (ie, invalid DMAs and illegal instructions). Tested on an IBM Cell Blade. Signed-off-by: Jeremy Kerr <jk@ozlabs.org> Signed-off-by: Arnd Bergmann <arnd.bergmann@de.ibm.com>
| * | [POWERPC] spufs: make spu page faults not block schedulingArnd Bergmann2007-04-238-130/+223
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Until now, we have always entered the spu page fault handler with a mutex for the spu context held. This has multiple bad side-effects: - it becomes impossible to suspend the context during page faults - if an spu program attempts to access its own mmio areas through DMA, we get an immediate livelock when the nopage function tries to acquire the same mutex This patch makes the page fault logic operate on a struct spu_context instead of a struct spu, and moves it from spu_base.c to a new file fault.c inside of spufs. We now also need to copy the dar and dsisr contents of the last fault into the saved context to have it accessible in case we schedule out the context before activating the page fault handler. Signed-off-by: Arnd Bergmann <arnd.bergmann@de.ibm.com>
| * | [POWERPC] spu_base: move spu_init_channels out of spu_mutexChristoph Hellwig2007-04-231-1/+2
| | | | | | | | | | | | | | | | | | | | | | | | There is no reason to execute spu_init_channels under spu_mutex after the spu has been taken off the freelist it's ours. Signed-off-by: Christoph Hellwig <hch@lst.de> Signed-off-by: Arnd Bergmann <arnd.bergmann@de.ibm.com>
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