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| * | | | [POWERPC] pasemi: Remove warning in mpic_pasemi_msi.cOlof Johansson2008-02-21
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Remove warning: arch/powerpc/sysdev/mpic_pasemi_msi.c: In function 'pasemi_msi_setup_msi_irqs': arch/powerpc/sysdev/mpic_pasemi_msi.c:135: warning: 'addr' is used uninitialized in this function Turns out addr wasn't even used, it's a leftover from the u3msi code. Signed-off-by: Olof Johansson <olof@lixom.net> Signed-off-by: Paul Mackerras <paulus@samba.org>
| * | | | [POWERPC] pasemi: Register i2c devices at bootOlof Johansson2008-02-21
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Setup i2c_board_info based on device tree contents. This has to be a device_initcall since we need PCI to be probed by the time we run it, but before the actual driver is initialized. Signed-off-by: Olof Johansson <olof@lixom.net> Signed-off-by: Paul Mackerras <paulus@samba.org>
| * | | | [POWERPC] Fix warning in pseries/power.cStephen Rothwell2008-02-19
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Introduced by commit 79393fc46ede43451a500a132e5de9856f5a4c83 ("kobject: convert pseries/power.c to kobj_attr interface"). sys_create_file takes a "struct attrbute *" not a "struct kobj_addribute *". arch/powerpc/platforms/pseries/power.c: In function 'apo_pm_init': arch/powerpc/platforms/pseries/power.c:78: warning: passing argument 2 of 'sysfs_create_file' from incompatible pointer type Signed-off-by: Stephen Rothwell <sfr@canb.auug.org.au> Signed-off-by: Paul Mackerras <paulus@samba.org>
| * | | | [POWERPC] Fix bootwrapper builds with older gcc versionsJosh Boyer2008-02-19
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | GCC versions before 3.4 did not support the -mcpu=440 option. Use -mcpu=405 for the 4xx specific bootwrapper files, as that has been around for much longer. Signed-off-by: Josh Boyer <jwboyer@linux.vnet.ibm.com> Signed-off-by: Paul Mackerras <paulus@samba.org>
| * | | | [POWERPC] Fix dt_mem_next_cell() to read the full addressBecky Bruce2008-02-19
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | dt_mem_next_cell() currently does of_read_ulong(). This does not allow for the case where #size-cells and/or #address-cells = 2 on a 32-bit system, as it will end up reading 32 bits instead of the expected 64. Change it to use of_read_number instead and always return a u64. Signed-off-by: Becky Bruce <becky.bruce at freescale.com> Acked-by: Benjamin Herrenschmidt <benh@kernel.crashing.org> Signed-off-by: Paul Mackerras <paulus@samba.org>
| * | | | [POWERPC] Kill sparse warnings in kprobesAnanth N Mavinakayanahalli2008-02-19
| | |/ / | |/| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Fix sparse warnings in powerpc kprobes: CHECK arch/powerpc/kernel/kprobes.c arch/powerpc/kernel/kprobes.c:277:6: warning: symbol 'kretprobe_trampoline_holder' was not declared. Should it be static? arch/powerpc/kernel/kprobes.c:287:15: warning: symbol 'trampoline_probe_handler' was not declared. Should it be static? arch/powerpc/kernel/kprobes.c:525:16: warning: symbol 'jprobe_return_end' was not declared. Should it be static? Fix along the same lines as http://lkml.org/lkml/2008/2/13/642 Signed-off-by: Ananth N Mavinakayanahalli <ananth@in.ibm.com> Signed-off-by: Paul Mackerras <paulus@samba.org>
| * | | [POWERPC] 44x: Add multiplatform defconfigJosh Boyer2008-02-16
| | | | | | | | | | | | | | | | | | | | | | | | | | | | Add a multiboard defconfig for PowerPC 44x now that the wrapper can create the proper zImages for multiple boards. Signed-off-by: Josh Boyer <jwboyer@linux.vnet.ibm.com>
| * | | [POWERPC] 44x: Fix Kconfig formattingJosh Boyer2008-02-15
| | | | | | | | | | | | | | | | | | | | | | | | Clean up some whitespace issues in the 44x Kconfig file. Signed-off-by: Josh Boyer <jwboyer@linux.vnet.ibm.com>
| * | | [POWERPC] 4xx: Update defconfigs for 2.6.25Josh Boyer2008-02-15
| | | | | | | | | | | | | | | | | | | | | | | | | | | | Update the 4xx defconfigs to remove WANT_DEVICE_TREE and add MTD_OF_PARTS where appropriate. Signed-off-by: Josh Boyer <jwboyer@linux.vnet.ibm.com>
| * | | [POWERPC] 4xx: Remove "i2c" and "xxmii-interface" device_types from dtsStefan Roese2008-02-15
| |/ / | | | | | | | | | | | | | | | | | | | | | Remove all "i2c" and "xxmii-interface" (rgmii etc) device_type entries from the 4xx dts files. Signed-off-by: Stefan Roese <sr@denx.de> Signed-off-by: Josh Boyer <jwboyer@linux.vnet.ibm.com>
* / / x86: fix vdso_install breaks user "make install"Sam Ravnborg2008-02-19
|/ / | | | | | | | | | | | | | | | | | | | | | | I suggest to make the vdso_install step independent as in following patch. This solves the issue at ahnd and still gives us the posibility to install the files should they be needed. Signed-off-by: Sam Ravnborg <sam@ravnborg.org> Signed-off-by: Ingo Molnar <mingo@elte.hu> Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
* | Merge branch 'merge' of ↵Linus Torvalds2008-02-15
|\ \ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | git://git.kernel.org/pub/scm/linux/kernel/git/paulus/powerpc * 'merge' of git://git.kernel.org/pub/scm/linux/kernel/git/paulus/powerpc: [POWERPC] Remove unused CONFIG_WANT_DEVICE_TREE [POWERPC] Cell RAS: Remove DEBUG, and add license and copyright [POWERPC] hvc_rtas_init() must be __init [POWERPC] free_property() must not be __init [POWERPC] vdso_do_func_patch{32,64}() must be __init [POWERPC] Remove generated files on make clean [POWERPC] Fix arch/ppc compilation - add typedef for pgtable_t [POWERPC] Wire up new timerfd syscalls [POWERPC] PS3: Update sys-manager button events [POWERPC] PS3: Sys-manager code cleanup [POWERPC] PS3: Use system reboot on restart [POWERPC] PS3: Fix bootwrapper hang bug [POWERPC] PS3: Fix reading pm interval in logical performance monitor [POWERPC] PS3: Fix setting bookmark in logical performance monitor [POWERPC] Fix DEBUG_PREEMPT warning when warning
| * | [POWERPC] Remove unused CONFIG_WANT_DEVICE_TREEGrant Likely2008-02-14
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | CONFIG_DEVICE_TREE was the only user of CONFIG_WANT_DEVICE_TREE but it was removed in commit id 25431333813686654907ab987fb5de10c10a16db (bootwrapper: Build multiple cuImages). This removes CONFIG_WANT_DEVICE_TREE from Kconfig and the defconfigs. Signed-off-by: Grant Likely <grant.likely@secretlab.ca> Signed-off-by: Paul Mackerras <paulus@samba.org>
| * | [POWERPC] Cell RAS: Remove DEBUG, and add license and copyrightMichael Ellerman2008-02-14
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | arch/powerpc/platforms/cell/ras.c still has DEBUG #defined, which is no longer necessary. Disable it - this disables two pr_debugs(). While we're there this file should have a copyright notice and license, so add both. Signed-off-by: Michael Ellerman <michael@ellerman.id.au> Signed-off-by: Paul Mackerras <paulus@samba.org>
| * | [POWERPC] free_property() must not be __initAdrian Bunk2008-02-14
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | This fixes the following section mismatch: <-- snip --> ... WARNING: vmlinux.o(.text+0x55648): Section mismatch in reference from the function .free_node() to the function .init.text:.free_property() ... <-- snip --> Signed-off-by: Adrian Bunk <bunk@kernel.org> Acked-by: Stephen Rothwell <sfr@canb.auug.org.au> Signed-off-by: Paul Mackerras <paulus@samba.org>
| * | [POWERPC] vdso_do_func_patch{32,64}() must be __initAdrian Bunk2008-02-14
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | This fixes the following section mismatches: <-- snip --> ... WARNING: vmlinux.o(.text+0xe49c): Section mismatch in reference from the function .vdso_do_func_patch64() to the function .init.text:.find_symbol64() WARNING: vmlinux.o(.text+0xe4d0): Section mismatch in reference from the function .vdso_do_func_patch64() to the function .init.text:.find_symbol64() WARNING: vmlinux.o(.text+0xe56c): Section mismatch in reference from the function .vdso_do_func_patch32() to the function .init.text:.find_symbol32() WARNING: vmlinux.o(.text+0xe5a0): Section mismatch in reference from the function .vdso_do_func_patch32() to the function .init.text:.find_symbol32() ... <-- snip --> Signed-off-by: Adrian Bunk <bunk@kernel.org> Signed-off-by: Paul Mackerras <paulus@samba.org>
| * | [POWERPC] Remove generated files on make cleanKumar Gala2008-02-14
| | | | | | | | | | | | | | | | | | vmlinux.lds and dtc-parser.tab.h get created but never cleaned up. Signed-off-by: Paul Mackerras <paulus@samba.org>
| * | [POWERPC] PS3: Fix bootwrapper hang bugGeoff Levand2008-02-14
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Fix a bug in the lv1_get_repository_node_value() routine of the PS3 bootwrapper. Changes in the PS3 system firmware 2.20 cause this bug to hang the system when branching from the bootwrapper to the kernel _start. Since the video system has not yet been enabled at the time the bug is hit, the system hangs with a blank screen. Earlier firmwares don't cause such a catastrophic failure, and so this bug went undetected. Signed-off-by: Geoff Levand <geoffrey.levand@am.sony.com> Signed-off-by: Paul Mackerras <paulus@samba.org>
| * | [POWERPC] Fix DEBUG_PREEMPT warning when warningHugh Dickins2008-02-14
| |/ | | | | | | | | | | | | | | | | The powerpc show_regs prints CPU using smp_processor_id: change that to raw_smp_processor_id, so that when it's showing a WARN_ON backtrace without preemption disabled, DEBUG_PREEMPT doesn't mess up that warning with its own. Signed-off-by: Hugh Dickins <hugh@veritas.com> Signed-off-by: Paul Mackerras <paulus@samba.org>
* | d_path: Make get_dcookie() use a struct path argumentJan Blunck2008-02-15
| | | | | | | | | | | | | | | | | | | | | | | | | | | | get_dcookie() is always called with a dentry and a vfsmount from a struct path. Make get_dcookie() take it directly as an argument. [akpm@linux-foundation.org: coding-style fixes] Signed-off-by: Jan Blunck <jblunck@suse.de> Acked-by: Christoph Hellwig <hch@infradead.org> Cc: Al Viro <viro@zeniv.linux.org.uk> Cc: "J. Bruce Fields" <bfields@fieldses.org> Cc: Neil Brown <neilb@suse.de> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* | Introduce path_put()Jan Blunck2008-02-15
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | * Add path_put() functions for releasing a reference to the dentry and vfsmount of a struct path in the right order * Switch from path_release(nd) to path_put(&nd->path) * Rename dput_path() to path_put_conditional() [akpm@linux-foundation.org: fix cifs] Signed-off-by: Jan Blunck <jblunck@suse.de> Signed-off-by: Andreas Gruenbacher <agruen@suse.de> Acked-by: Christoph Hellwig <hch@lst.de> Cc: <linux-fsdevel@vger.kernel.org> Cc: Al Viro <viro@zeniv.linux.org.uk> Cc: Steven French <sfrench@us.ibm.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* | Embed a struct path into struct nameidata instead of nd->{dentry,mnt}Jan Blunck2008-02-15
|/ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | This is the central patch of a cleanup series. In most cases there is no good reason why someone would want to use a dentry for itself. This series reflects that fact and embeds a struct path into nameidata. Together with the other patches of this series - it enforced the correct order of getting/releasing the reference count on <dentry,vfsmount> pairs - it prepares the VFS for stacking support since it is essential to have a struct path in every place where the stack can be traversed - it reduces the overall code size: without patch series: text data bss dec hex filename 5321639 858418 715768 6895825 6938d1 vmlinux with patch series: text data bss dec hex filename 5320026 858418 715768 6894212 693284 vmlinux This patch: Switch from nd->{dentry,mnt} to nd->path.{dentry,mnt} everywhere. [akpm@linux-foundation.org: coding-style fixes] [akpm@linux-foundation.org: fix cifs] [akpm@linux-foundation.org: fix smack] Signed-off-by: Jan Blunck <jblunck@suse.de> Signed-off-by: Andreas Gruenbacher <agruen@suse.de> Acked-by: Christoph Hellwig <hch@lst.de> Cc: Al Viro <viro@zeniv.linux.org.uk> Cc: Casey Schaufler <casey@schaufler-ca.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* Linux Kernel Markers: support multiple probesMathieu Desnoyers2008-02-13
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | RCU style multiple probes support for the Linux Kernel Markers. Common case (one probe) is still fast and does not require dynamic allocation or a supplementary pointer dereference on the fast path. - Move preempt disable from the marker site to the callback. Since we now have an internal callback, move the preempt disable/enable to the callback instead of the marker site. Since the callback change is done asynchronously (passing from a handler that supports arguments to a handler that does not setup the arguments is no arguments are passed), we can safely update it even if it is outside the preempt disable section. - Move probe arm to probe connection. Now, a connected probe is automatically armed. Remove MARK_MAX_FORMAT_LEN, unused. This patch modifies the Linux Kernel Markers API : it removes the probe "arm/disarm" and changes the probe function prototype : it now expects a va_list * instead of a "...". If we want to have more than one probe connected to a marker at a given time (LTTng, or blktrace, ssytemtap) then we need this patch. Without it, connecting a second probe handler to a marker will fail. It allow us, for instance, to do interesting combinations : Do standard tracing with LTTng and, eventually, to compute statistics with SystemTAP, or to have a special trigger on an event that would call a systemtap script which would stop flight recorder tracing. Signed-off-by: Mathieu Desnoyers <mathieu.desnoyers@polymtl.ca> Cc: Christoph Hellwig <hch@infradead.org> Cc: Mike Mason <mmlnx@us.ibm.com> Cc: Dipankar Sarma <dipankar@in.ibm.com> Cc: David Smith <dsmith@redhat.com> Cc: "Paul E. McKenney" <paulmck@us.ibm.com> Cc: "Frank Ch. Eigler" <fche@redhat.com> Cc: Steven Rostedt <rostedt@goodmis.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* ide: introduce HAVE_IDESam Ravnborg2008-02-09
| | | | | | | | | | | | To allow flexible configuration of IDE introduce HAVE_IDE. All archs except arm, um and s390 unconditionally select it. For arm the actual configuration determine if IDE is supported. This is a step towards introducing drivers/Kconfig for arm. Signed-off-by: Sam Ravnborg <sam@ravnborg.org> Acked-by: Russell King - ARM Linux <linux@arm.linux.org.uk> Acked-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
* Merge branch 'for-2.6.25' of ↵Linus Torvalds2008-02-08
|\ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | git://git.kernel.org/pub/scm/linux/kernel/git/paulus/powerpc * 'for-2.6.25' of git://git.kernel.org/pub/scm/linux/kernel/git/paulus/powerpc: [POWERPC] Add arch-specific walk_memory_remove() for 64-bit powerpc [POWERPC] Enable hotplug memory remove for 64-bit powerpc [POWERPC] Add remove_memory() for 64-bit powerpc [POWERPC] Make cell IOMMU fixed mapping printk more useful [POWERPC] Fix potential cell IOMMU bug when switching back to default DMA ops [POWERPC] Don't enable cell IOMMU fixed mapping if there are no dma-ranges [POWERPC] Fix cell IOMMU null pointer explosion on old firmwares [POWERPC] spufs: Fix timing dependent false return from spufs_run_spu [POWERPC] spufs: No need to have a runnable SPU for libassist update [POWERPC] spufs: Update SPU_Status[CISHP] in backing runcntl write [POWERPC] spufs: Fix state_mutex leaks [POWERPC] Disable G5 NAP mode during SMU commands on U3
| * [POWERPC] Add arch-specific walk_memory_remove() for 64-bit powerpcBadari Pulavarty2008-02-08
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | walk_memory_resource() verifies if there are holes in a given memory range, by checking against /proc/iomem. On x86/ia64 system memory is represented in /proc/iomem. On powerpc, we don't show system memory as IO resource in /proc/iomem - instead it's maintained in /proc/device-tree. This provides a way for an architecture to provide its own walk_memory_resource() function. On powerpc, the memory region is small (16MB), contiguous and non-overlapping. So extra checking against the device-tree is not needed. Signed-off-by: Badari Pulavarty <pbadari@us.ibm.com> Acked-by: KAMEZAWA Hiroyuki <kamezawa.hiroyu@jp.fujitsu.com> Cc: Dave Hansen <haveblue@us.ibm.com> Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org> Cc: Kumar Gala <galak@gate.crashing.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Paul Mackerras <paulus@samba.org>
| * [POWERPC] Enable hotplug memory remove for 64-bit powerpcBadari Pulavarty2008-02-08
| | | | | | | | | | | | | | | | | | | | | | | | Enable hotplug memory remove for ppc64. Signed-off-by: Badari Pulavarty <pbadari@us.ibm.com> Cc: Dave Hansen <haveblue@us.ibm.com> Cc: KAMEZAWA Hiroyuki <kamezawa.hiroyu@jp.fujitsu.com> Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org> Cc: Kumar Gala <galak@gate.crashing.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Paul Mackerras <paulus@samba.org>
| * [POWERPC] Add remove_memory() for 64-bit powerpcBadari Pulavarty2008-02-08
| | | | | | | | | | | | | | | | | | | | | | | | Supply remove_memory() function for 64-bit powerpc. This is still not quite complete as it needs to do some more arch-specific stuff, which will be added in a later patch. Signed-off-by: Badari Pulavarty <pbadari@us.ibm.com> Cc: Yasunori Goto <y-goto@jp.fujitsu.com> Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Paul Mackerras <paulus@samba.org>
| * [POWERPC] Make cell IOMMU fixed mapping printk more usefulMichael Ellerman2008-02-08
| | | | | | | | | | | | | | | | | | Currently the cell IOMMU fixed mapping just printks that it's been setup, which is not particularly useful. Much more interesting is the address ranges for the different windows. This adds one line to dmesg on a blade. Signed-off-by: Michael Ellerman <michael@ellerman.id.au> Signed-off-by: Paul Mackerras <paulus@samba.org>
| * [POWERPC] Fix potential cell IOMMU bug when switching back to default DMA opsMichael Ellerman2008-02-08
| | | | | | | | | | | | | | | | | | | | If we get a 64-bit dma mask we switch to the fixed ops and call cell_dma_dev_setup(). If the driver then switches back to a 32-bit dma mask for any reason we don't call cell_dma_dev_setup() again, which has the potential to leave bogus data in dev->archdata.dma_data. Signed-off-by: Michael Ellerman <michael@ellerman.id.au> Signed-off-by: Paul Mackerras <paulus@samba.org>
| * [POWERPC] Don't enable cell IOMMU fixed mapping if there are no dma-rangesMichael Ellerman2008-02-08
| | | | | | | | | | | | | | | | | | In order for the cell IOMMU fixed mapping to work we need "dma-ranges" properties in the device tree. If there are none then there's no point enabling the fixed mapping support. Signed-off-by: Michael Ellerman <michael@ellerman.id.au> Signed-off-by: Paul Mackerras <paulus@samba.org>
| * [POWERPC] Fix cell IOMMU null pointer explosion on old firmwaresMichael Ellerman2008-02-08
| | | | | | | | | | | | | | | | | | The cell IOMMU fixed mapping support has a null pointer bug if you run it on older firmwares that don't contain the "dma-ranges" properties. Fix it and convert to using of_get_next_parent() while we're there. Signed-off-by: Michael Ellerman <michael@ellerman.id.au> Signed-off-by: Paul Mackerras <paulus@samba.org>
| * [POWERPC] spufs: Fix timing dependent false return from spufs_run_spuLuke Browning2008-02-08
| | | | | | | | | | | | | | | | | | | | | | | | | | | | Stop bits are only valid when the running bit is not set. Status bits carry over from one invocation of spufs_run_spu() to another, so the RUNNING bit gets added to the previous state of the register which may have been a remote library call. In this case, it looks like another library routine should be invoked, but the spe is actually running. This fixes a problem with a testcase that exercises the scheduler. Signed-off-by: Luke Browning <lukebrowning@us.ibm.com> Signed-off-by: Jeremy Kerr <jk@ozlabs.org> Signed-off-by: Paul Mackerras <paulus@samba.org>
| * [POWERPC] spufs: No need to have a runnable SPU for libassist updateLuke Browning2008-02-08
| | | | | | | | | | | | | | | | | | | | We don't need to update the libassist statistic with the context in a runnable state, so do it after spu_disable_spu(). Signed-off-by: Luke Browning <lukebrowning@us.ibm.com> Signed-off-by: Jeremy Kerr <jk@ozlabs.org> Acked-by: Christoph Hellwig <hch@lst.de> Signed-off-by: Paul Mackerras <paulus@samba.org>
| * [POWERPC] spufs: Update SPU_Status[CISHP] in backing runcntl writeMasato Noguchi2008-02-08
| | | | | | | | | | | | | | | | | | | | | | | | | | | | Currently, the kernel may fail to restart a SPE context which has stopped and been swapped out. This changes spu_backing_runcntl_write to emulate the real SPU_Status register exactly. When the SPU Run Control register is written with SPU_RunCntl[Run] set to '1', the physical SPU automatically sets SPU_Status[R] and clears SPU_Status[CISHP]. Signed-off-by: Masato Noguchi <Masato.Noguchi@jp.sony.com> Signed-off-by: Jeremy Kerr <jk@ozlabs.org> Signed-off-by: Paul Mackerras <paulus@samba.org>
| * [POWERPC] spufs: Fix state_mutex leaksChristoph Hellwig2008-02-08
| | | | | | | | | | | | | | | | | | | | | | | | Fix various state_mutex leaks. The worst one was introduced by the interrutible state_mutex conversion but there've been a few before too. Notably spufs_wait now returns without the state_mutex held when returning an error, which actually cleans up some code. Signed-off-by: Christoph Hellwig <hch@lst.de> Signed-off-by: Luke Browning <lukebrowning@us.ibm.com> Signed-off-by: Jeremy Kerr <jk@ozlabs.org> Signed-off-by: Paul Mackerras <paulus@samba.org>
| * [POWERPC] Disable G5 NAP mode during SMU commands on U3Benjamin Herrenschmidt2008-02-08
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | It appears that with the U3 northbridge, if the processor is in NAP mode the whole time while waiting for an SMU command to complete, then the SMU will fail. It could be related to the weird backward mechanism the SMU uses to get to system memory via i2c to the northbridge that doesn't operate properly when the said bridge is in napping along with the CPU. That is on U3 at least, U4 doesn't seem to be affected. This didn't show before NO_HZ as the timer wakeup was enough to make it work it seems, but that is no longer the case. This fixes it by disabling NAP mode on those machines while an SMU command is in flight. Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org> Signed-off-by: Paul Mackerras <paulus@samba.org>
* | CONFIG_HIGHPTE vs. sub-page page tables.Martin Schwidefsky2008-02-08
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Background: I've implemented 1K/2K page tables for s390. These sub-page page tables are required to properly support the s390 virtualization instruction with KVM. The SIE instruction requires that the page tables have 256 page table entries (pte) followed by 256 page status table entries (pgste). The pgstes are only required if the process is using the SIE instruction. The pgstes are updated by the hardware and by the hypervisor for a number of reasons, one of them is dirty and reference bit tracking. To avoid wasting memory the standard pte table allocation should return 1K/2K (31/64 bit) and 2K/4K if the process is using SIE. Problem: Page size on s390 is 4K, page table size is 1K or 2K. That means the s390 version for pte_alloc_one cannot return a pointer to a struct page. Trouble is that with the CONFIG_HIGHPTE feature on x86 pte_alloc_one cannot return a pointer to a pte either, since that would require more than 32 bit for the return value of pte_alloc_one (and the pte * would not be accessible since its not kmapped). Solution: The only solution I found to this dilemma is a new typedef: a pgtable_t. For s390 pgtable_t will be a (pte *) - to be introduced with a later patch. For everybody else it will be a (struct page *). The additional problem with the initialization of the ptl lock and the NR_PAGETABLE accounting is solved with a constructor pgtable_page_ctor and a destructor pgtable_page_dtor. The page table allocation and free functions need to call these two whenever a page table page is allocated or freed. pmd_populate will get a pgtable_t instead of a struct page pointer. To get the pgtable_t back from a pmd entry that has been installed with pmd_populate a new function pmd_pgtable is added. It replaces the pmd_page call in free_pte_range and apply_to_pte_range. Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com> Cc: <linux-arch@vger.kernel.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* | mount options: fix spufsMiklos Szeredi2008-02-08
| | | | | | | | | | | | | | | | | | | | | | | | | | Add a .show_options super operation to spufs. Use generic_show_options() and save the complete option string in spufs_fill_super(). Signed-off-by: Miklos Szeredi <mszeredi@suse.cz> Cc: Paul Mackerras <paulus@samba.org> Cc: Arnd Bergmann <arnd@arndb.de> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* | libfs: rename simple_attr_close to simple_attr_releaseChristoph Hellwig2008-02-08
| | | | | | | | | | | | | | | | | | | | | | | | simple_attr_close implementes ->release so it should be named accordingly. Signed-off-by: Christoph Hellwig <hch@lst.de> Cc: <stefano.brivio@polimi.it> Cc: Arnd Bergmann <arnd@arndb.de> Cc: Greg KH <greg@kroah.com> Cc: Al Viro <viro@zeniv.linux.org.uk> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* | libfs: allow error return from simple attributesChristoph Hellwig2008-02-08
|/ | | | | | | | | | | | | | | | | Sometimes simple attributes might need to return an error, e.g. for acquiring a mutex interruptibly. In fact we have that situation in spufs already which is the original user of the simple attributes. This patch merged the temporarily forked attributes in spufs back into the main ones and allows to return errors. [akpm@linux-foundation.org: build fix] Signed-off-by: Christoph Hellwig <hch@lst.de> Cc: <stefano.brivio@polimi.it> Cc: Arnd Bergmann <arnd@arndb.de> Cc: Greg KH <greg@kroah.com> Cc: Al Viro <viro@zeniv.linux.org.uk> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* Fix compilation of powerpc asm-offsets.c with old gccTony Breeds2008-02-07
| | | | | | | | | | | | | | | | Commit ad7f71674ad7c3c4467e48f6ab9e85516dae2720 ("[POWERPC] Use a sensible default for clock_getres() in the VDSO") corrected the clock resolution reported by the VDSO clock_getres() but introduced another problem in that older versions of gcc (gcc-4.0 and earlier) fail to compile the new code in arch/powerpc/kernel/asm-offsets.c. This fixes it by introducing a new MONOTONIC_RES_NSEC define in the generic code which is equivalent to KTIME_MONOTONIC_RES but is just an integer constant, not a ktime union. Signed-off-by: Tony Breeds <tony@bakeyournoodle.com> Signed-off-by: Paul Mackerras <paulus@samba.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* Merge branch 'for-2.6.25' of ↵Linus Torvalds2008-02-07
|\ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | git://git.kernel.org/pub/scm/linux/kernel/git/paulus/powerpc * 'for-2.6.25' of git://git.kernel.org/pub/scm/linux/kernel/git/paulus/powerpc: (69 commits) [POWERPC] Add SPE registers to core dumps [POWERPC] Use regset code for compat PTRACE_*REGS* calls [POWERPC] Use generic compat_sys_ptrace [POWERPC] Use generic compat_ptrace_request [POWERPC] Use generic ptrace peekdata/pokedata [POWERPC] Use regset code for PTRACE_*REGS* requests [POWERPC] Switch to generic compat_binfmt_elf code [POWERPC] Switch to using user_regset-based core dumps [POWERPC] Add user_regset compat support [POWERPC] Add user_regset_view definitions [POWERPC] Use user_regset accessors for GPRs [POWERPC] ptrace accessors for special regs MSR and TRAP [POWERPC] Use user_regset accessors for SPE regs [POWERPC] Use user_regset accessors for altivec regs [POWERPC] Use user_regset accessors for FP regs [POWERPC] mpc52xx: fix compile error introduce when rebasing patch [POWERPC] 4xx: PCIe indirect DCR spinlock fix. [POWERPC] Add missing native dcr dcr_ind_lock spinlock [POWERPC] 4xx: Fix offset value on Warp board [POWERPC] 4xx: Add 440EPx Sequoia ehci dts entry ...
| * [POWERPC] Add SPE registers to core dumpsRoland McGrath2008-02-07
| | | | | | | | | | | | | | | | | | | | | | | | | | This makes the SPE register data appear in ELF core dumps, using the new n_type value NT_PPC_SPE (0x101). This new note type is not used by any consumers of core files yet, but support can be added. I don't even have any hardware with SPE capabilities, so I've never seen such a note. But this demonstrates how simple it is to export register information in core dumps when the user_regset style is used for the low-level code. Signed-off-by: Roland McGrath <roland@redhat.com> Signed-off-by: Paul Mackerras <paulus@samba.org>
| * [POWERPC] Use regset code for compat PTRACE_*REGS* callsRoland McGrath2008-02-07
| | | | | | | | | | | | | | | | This cleans up the 32-bit ptrace syscall support to use user_regset calls to get at the register data for PTRACE_*REGS* calls. Signed-off-by: Roland McGrath <roland@redhat.com> Signed-off-by: Paul Mackerras <paulus@samba.org>
| * [POWERPC] Use generic compat_sys_ptraceRoland McGrath2008-02-07
| | | | | | | | | | | | | | | | This replaces powerpc's compat_sys_ptrace with a compat_arch_ptrace and enables the new generic definition of compat_sys_ptrace instead. Signed-off-by: Roland McGrath <roland@redhat.com> Signed-off-by: Paul Mackerras <paulus@samba.org>
| * [POWERPC] Use generic compat_ptrace_requestRoland McGrath2008-02-07
| | | | | | | | | | | | | | | | This removes some duplicated code by calling the new generic compat_ptrace_request from powerpc's compat_sys_ptrace. Signed-off-by: Roland McGrath <roland@redhat.com> Signed-off-by: Paul Mackerras <paulus@samba.org>
| * [POWERPC] Use generic ptrace peekdata/pokedataRoland McGrath2008-02-07
| | | | | | | | | | | | | | Now that ptrace_request handles these, we can drop some more boilerplate. Signed-off-by: Roland McGrath <roland@redhat.com> Signed-off-by: Paul Mackerras <paulus@samba.org>
| * [POWERPC] Use regset code for PTRACE_*REGS* requestsRoland McGrath2008-02-07
| | | | | | | | | | | | | | | | | | | | | | | | | | This replaces all the code for powerpc PTRACE_*REGS* requests with simple calls to copy_regset_from_user and copy_regset_to_user. All the ptrace formats are either the whole corresponding user_regset format (core dump format) or a leading subset of it, so we can get rid of all the remaining embedded knowledge of both those layouts and of the internal data structures they correspond to. Only the user_regset accessors need to implement that. Signed-off-by: Roland McGrath <roland@redhat.com> Signed-off-by: Paul Mackerras <paulus@samba.org>
| * [POWERPC] Switch to generic compat_binfmt_elf codeRoland McGrath2008-02-07
| | | | | | | | | | | | | | | | | | | | | | This switches the CONFIG_PPC64 support for 32-bit ELF to use the generic fs/compat_binfmt_elf.c implementation instead of our own binfmt_elf32.c. Since so much is the same between 32/64, there is only one macro we have to define to make the generic support work out of the box. Signed-off-by: Roland McGrath <roland@redhat.com> Signed-off-by: Paul Mackerras <paulus@samba.org>
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