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* powerpc: Use proper accessors for IRQ_* flagsThomas Gleixner2011-03-2920-26/+24Star
| | | | | | | Use the proper accessors instead of open access to irq_desc. Converted with coccinelle. Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
* powerpc: cell: Use the core flow handlerThomas Gleixner2011-03-282-49/+2Star
| | | | | | The core handler is a full equivalent replacement. Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
* lib, arch: add filter argument to show_mem and fix private implementationsDavid Rientjes2011-03-251-1/+1
| | | | | | | | | | | | | | | | | | | | | | | | | Commit ddd588b5dd55 ("oom: suppress nodes that are not allowed from meminfo on oom kill") moved lib/show_mem.o out of lib/lib.a, which resulted in build warnings on all architectures that implement their own versions of show_mem(): lib/lib.a(show_mem.o): In function `show_mem': show_mem.c:(.text+0x1f4): multiple definition of `show_mem' arch/sparc/mm/built-in.o:(.text+0xd70): first defined here The fix is to remove __show_mem() and add its argument to show_mem() in all implementations to prevent this breakage. Architectures that implement their own show_mem() actually don't do anything with the argument yet, but they could be made to filter nodes that aren't allowed in the current context in the future just like the generic implementation. Reported-by: Stephen Rothwell <sfr@canb.auug.org.au> Reported-by: James Bottomley <James.Bottomley@hansenpartnership.com> Suggested-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: David Rientjes <rientjes@google.com> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* Merge branch 'for-linus' of ↵Linus Torvalds2011-03-241-3/+3
|\ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs-2.6 * 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs-2.6: deal with races in /proc/*/{syscall,stack,personality} proc: enable writing to /proc/pid/mem proc: make check_mem_permission() return an mm_struct on success proc: hold cred_guard_mutex in check_mem_permission() proc: disable mem_write after exec mm: implement access_remote_vm mm: factor out main logic of access_process_vm mm: use mm_struct to resolve gate vma's in __get_user_pages mm: arch: rename in_gate_area_no_task to in_gate_area_no_mm mm: arch: make in_gate_area take an mm_struct instead of a task_struct mm: arch: make get_gate_vma take an mm_struct instead of a task_struct x86: mark associated mm when running a task in 32 bit compatibility mode x86: add context tag to mark mm when running a task in 32-bit compatibility mode auxv: require the target to be tracable (or yourself) close race in /proc/*/environ report errors in /proc/*/*map* sanely pagemap: close races with suid execve make sessionid permissions in /proc/*/task/* match those in /proc/* fix leaks in path_lookupat() Fix up trivial conflicts in fs/proc/base.c
| * mm: arch: rename in_gate_area_no_task to in_gate_area_no_mmStephen Wilson2011-03-231-1/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | Now that gate vma's are referenced with respect to a particular mm and not a particular task it only makes sense to propagate the change to this predicate as well. Signed-off-by: Stephen Wilson <wilsons@start.ca> Reviewed-by: Michel Lespinasse <walken@google.com> Cc: Thomas Gleixner <tglx@linutronix.de> Cc: Ingo Molnar <mingo@redhat.com> Cc: "H. Peter Anvin" <hpa@zytor.com> Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
| * mm: arch: make in_gate_area take an mm_struct instead of a task_structStephen Wilson2011-03-231-1/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | | | Morally, the question of whether an address lies in a gate vma should be asked with respect to an mm, not a particular task. Moreover, dropping the dependency on task_struct will help make existing and future operations on mm's more flexible and convenient. Signed-off-by: Stephen Wilson <wilsons@start.ca> Reviewed-by: Michel Lespinasse <walken@google.com> Cc: Thomas Gleixner <tglx@linutronix.de> Cc: Ingo Molnar <mingo@redhat.com> Cc: "H. Peter Anvin" <hpa@zytor.com> Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
| * mm: arch: make get_gate_vma take an mm_struct instead of a task_structStephen Wilson2011-03-231-1/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | Morally, the presence of a gate vma is more an attribute of a particular mm than a particular task. Moreover, dropping the dependency on task_struct will help make both existing and future operations on mm's more flexible and convenient. Signed-off-by: Stephen Wilson <wilsons@start.ca> Reviewed-by: Michel Lespinasse <walken@google.com> Cc: Thomas Gleixner <tglx@linutronix.de> Cc: Ingo Molnar <mingo@redhat.com> Cc: "H. Peter Anvin" <hpa@zytor.com> Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
* | crash_dump: export is_kdump_kernel to modules, consolidate elfcorehdr_addr, ↵Olaf Hering2011-03-241-17/+0Star
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | setup_elfcorehdr and saved_max_pfn The Xen PV drivers in a crashed HVM guest can not connect to the dom0 backend drivers because both frontend and backend drivers are still in connected state. To run the connection reset function only in case of a crashdump, the is_kdump_kernel() function needs to be available for the PV driver modules. Consolidate elfcorehdr_addr, setup_elfcorehdr and saved_max_pfn into kernel/crash_dump.c Also export elfcorehdr_addr to make is_kdump_kernel() usable for modules. Leave 'elfcorehdr' as early_param(). This changes powerpc from __setup() to early_param(). It adds an address range check from x86 also on ia64 and powerpc. [akpm@linux-foundation.org: additional #includes] [akpm@linux-foundation.org: remove elfcorehdr_addr export] [akpm@linux-foundation.org: fix for Tejun's mm/nobootmem.c changes] Signed-off-by: Olaf Hering <olaf@aepfle.de> Cc: Russell King <rmk@arm.linux.org.uk> Cc: "Luck, Tony" <tony.luck@intel.com> Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org> Cc: Paul Mundt <lethal@linux-sh.org> Cc: Ingo Molnar <mingo@elte.hu> Cc: Thomas Gleixner <tglx@linutronix.de> Cc: "H. Peter Anvin" <hpa@zytor.com> Cc: Johannes Weiner <hannes@cmpxchg.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* | remove dma64_addr_tFUJITA Tomonori2011-03-241-2/+0Star
| | | | | | | | | | | | | | | | | | | | | | | | | | There is no user now. Signed-off-by: FUJITA Tomonori <fujita.tomonori@lab.ntt.co.jp> Cc: David Miller <davem@davemloft.net> Cc: Ralf Baechle <ralf@linux-mips.org> Cc: Richard Henderson <rth@twiddle.net> Cc: Ivan Kokshaysky <ink@jurassic.park.msu.ru> Cc: Matt Turner <mattst88@gmail.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* | rapidio: remove mport resource reservation from common RIO codeAlexandre Bounine2011-03-241-0/+9
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Removes resource reservation from the common sybsystem initialization code and make it part of mport driver initialization. This resolves conflict with resource reservation by device specific mport drivers. Signed-off-by: Alexandre Bounine <alexandre.bounine@idt.com> Cc: Kumar Gala <galak@kernel.crashing.org> Cc: Matt Porter <mporter@kernel.crashing.org> Cc: Li Yang <leoli@freescale.com> Cc: Thomas Moll <thomas.moll@sysgo.com> Cc: Micha Nelissen <micha@neli.hopto.org> Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* | rapidio: modify mport ID assignmentAlexandre Bounine2011-03-241-25/+0Star
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Changes mport ID and host destination ID assignment to implement unified method common to all mport drivers. Makes "riohdid=" kernel command line parameter common for all architectures with support for more that one host destination ID assignment. Signed-off-by: Alexandre Bounine <alexandre.bounine@idt.com> Cc: Kumar Gala <galak@kernel.crashing.org> Cc: Matt Porter <mporter@kernel.crashing.org> Cc: Li Yang <leoli@freescale.com> Cc: Thomas Moll <thomas.moll@sysgo.com> Cc: Micha Nelissen <micha@neli.hopto.org> Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* | rapidio: modify subsystem and driver initialization sequenceAlexandre Bounine2011-03-241-9/+1Star
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Subsystem initialization sequence modified to support presence of multiple RapidIO controllers in the system. The new sequence is compatible with initialization of PCI devices. Signed-off-by: Alexandre Bounine <alexandre.bounine@idt.com> Cc: Kumar Gala <galak@kernel.crashing.org> Cc: Matt Porter <mporter@kernel.crashing.org> Cc: Li Yang <leoli@freescale.com> Cc: Thomas Moll <thomas.moll@sysgo.com> Cc: Micha Nelissen <micha@neli.hopto.org> Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* | rapidio: modify configuration to support PCI-SRIO controllerAlexandre Bounine2011-03-243-3/+11
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | 1. Add an option to include RapidIO support if the PCI is available. 2. Add FSL_RIO configuration option to enable controller selection. 3. Add RapidIO support option into x86 and MIPS architectures. Signed-off-by: Alexandre Bounine <alexandre.bounine@idt.com> Acked-by: Kumar Gala <galak@kernel.crashing.org> Cc: Matt Porter <mporter@kernel.crashing.org> Cc: Li Yang <leoli@freescale.com> Cc: Thomas Moll <thomas.moll@sysgo.com> Cc: Micha Nelissen <micha@neli.hopto.org> Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* | rapidio: add architecture specific callbacksAlexandre Bounine2011-03-241-25/+27
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | This set of patches eliminates RapidIO dependency on PowerPC architecture and makes it available to other architectures (x86 and MIPS). It also enables support of new platform independent RapidIO controllers such as PCI-to-SRIO and PCI Express-to-SRIO. This patch: Extend number of mport callback functions to eliminate direct linking of architecture specific mport operations. Signed-off-by: Alexandre Bounine <alexandre.bounine@idt.com> Cc: Kumar Gala <galak@kernel.crashing.org> Cc: Matt Porter <mporter@kernel.crashing.org> Cc: Li Yang <leoli@freescale.com> Cc: Thomas Moll <thomas.moll@sysgo.com> Cc: Micha Nelissen <micha@neli.hopto.org> Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* | bitops: remove minix bitops from asm/bitops.hAkinobu Mita2011-03-241-14/+0Star
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | minix bit operations are only used by minix filesystem and useless by other modules. Because byte order of inode and block bitmaps is different on each architecture like below: m68k: big-endian 16bit indexed bitmaps h8300, microblaze, s390, sparc, m68knommu: big-endian 32 or 64bit indexed bitmaps m32r, mips, sh, xtensa: big-endian 32 or 64bit indexed bitmaps for big-endian mode little-endian bitmaps for little-endian mode Others: little-endian bitmaps In order to move minix bit operations from asm/bitops.h to architecture independent code in minix filesystem, this provides two config options. CONFIG_MINIX_FS_BIG_ENDIAN_16BIT_INDEXED is only selected by m68k. CONFIG_MINIX_FS_NATIVE_ENDIAN is selected by the architectures which use native byte order bitmaps (h8300, microblaze, s390, sparc, m68knommu, m32r, mips, sh, xtensa). The architectures which always use little-endian bitmaps do not select these options. Finally, we can remove minix bit operations from asm/bitops.h for all architectures. Signed-off-by: Akinobu Mita <akinobu.mita@gmail.com> Acked-by: Arnd Bergmann <arnd@arndb.de> Acked-by: Greg Ungerer <gerg@uclinux.org> Cc: Geert Uytterhoeven <geert@linux-m68k.org> Cc: Roman Zippel <zippel@linux-m68k.org> Cc: Andreas Schwab <schwab@linux-m68k.org> Cc: Martin Schwidefsky <schwidefsky@de.ibm.com> Cc: Heiko Carstens <heiko.carstens@de.ibm.com> Cc: Yoshinori Sato <ysato@users.sourceforge.jp> Cc: Michal Simek <monstr@monstr.eu> Cc: "David S. Miller" <davem@davemloft.net> Cc: Hirokazu Takata <takata@linux-m32r.org> Acked-by: Ralf Baechle <ralf@linux-mips.org> Acked-by: Paul Mundt <lethal@linux-sh.org> Cc: Chris Zankel <chris@zankel.net> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* | bitops: remove ext2 non-atomic bitops from asm/bitops.hAkinobu Mita2011-03-241-14/+0Star
| | | | | | | | | | | | | | | | | | | | | | | | As the result of conversions, there are no users of ext2 non-atomic bit operations except for ext2 filesystem itself. Now we can put them into architecture independent code in ext2 filesystem, and remove from asm/bitops.h for all architectures. Signed-off-by: Akinobu Mita <akinobu.mita@gmail.com> Cc: Jan Kara <jack@suse.cz> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* | bitops: introduce CONFIG_GENERIC_FIND_BIT_LEAkinobu Mita2011-03-241-0/+4
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | This introduces CONFIG_GENERIC_FIND_BIT_LE to tell whether to use generic implementation of find_*_bit_le() in lib/find_next_bit.c or not. For now we select CONFIG_GENERIC_FIND_BIT_LE for all architectures which enable CONFIG_GENERIC_FIND_NEXT_BIT. But m68knommu wants to define own faster find_next_zero_bit_le() and continues using generic find_next_{,zero_}bit(). (CONFIG_GENERIC_FIND_NEXT_BIT and !CONFIG_GENERIC_FIND_BIT_LE) Signed-off-by: Akinobu Mita <akinobu.mita@gmail.com> Cc: Greg Ungerer <gerg@uclinux.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>
* | powerpc: introduce little-endian bitopsAkinobu Mita2011-03-241-23/+38
| | | | | | | | | | | | | | | | | | | | | | | | Introduce little-endian bit operations by renaming existing powerpc native little-endian bit operations and changing them to take any pointer types. Signed-off-by: Akinobu Mita <akinobu.mita@gmail.com> Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org> Cc: Paul Mackerras <paulus@samba.org> Cc: "H. Peter Anvin" <hpa@zytor.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* | asm-generic: change little-endian bitops to take any pointer typesAkinobu Mita2011-03-241-2/+2
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | This makes the little-endian bitops take any pointer types by changing the prototypes and adding casts in the preprocessor macros. That would seem to at least make all the filesystem code happier, and they can continue to do just something like #define ext2_set_bit __test_and_set_bit_le (or whatever the exact sequence ends up being). Signed-off-by: Akinobu Mita <akinobu.mita@gmail.com> Cc: Arnd Bergmann <arnd@arndb.de> Cc: Richard Henderson <rth@twiddle.net> Cc: Ivan Kokshaysky <ink@jurassic.park.msu.ru> 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: Ralf Baechle <ralf@linux-mips.org> Cc: Kyle McMartin <kyle@mcmartin.ca> Cc: Matthew Wilcox <willy@debian.org> Cc: Grant Grundler <grundler@parisc-linux.org> Cc: Paul Mundt <lethal@linux-sh.org> Cc: Kazumoto Kojima <kkojima@rr.iij4u.or.jp> Cc: Hirokazu Takata <takata@linux-m32r.org> Cc: "David S. Miller" <davem@davemloft.net> Cc: Chris Zankel <chris@zankel.net> Cc: Ingo Molnar <mingo@elte.hu> Cc: Thomas Gleixner <tglx@linutronix.de> Cc: Hans-Christian Egtvedt <hans-christian.egtvedt@atmel.com> Cc: "H. Peter Anvin" <hpa@zytor.com> Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org> Cc: Paul Mackerras <paulus@samba.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* | asm-generic: rename generic little-endian bitops functionsAkinobu Mita2011-03-241-7/+8
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | As a preparation for providing little-endian bitops for all architectures, This renames generic implementation of little-endian bitops. (remove "generic_" prefix and postfix "_le") s/generic_find_next_le_bit/find_next_bit_le/ s/generic_find_next_zero_le_bit/find_next_zero_bit_le/ s/generic_find_first_zero_le_bit/find_first_zero_bit_le/ s/generic___test_and_set_le_bit/__test_and_set_bit_le/ s/generic___test_and_clear_le_bit/__test_and_clear_bit_le/ s/generic_test_le_bit/test_bit_le/ s/generic___set_le_bit/__set_bit_le/ s/generic___clear_le_bit/__clear_bit_le/ s/generic_test_and_set_le_bit/test_and_set_bit_le/ s/generic_test_and_clear_le_bit/test_and_clear_bit_le/ Signed-off-by: Akinobu Mita <akinobu.mita@gmail.com> Acked-by: Arnd Bergmann <arnd@arndb.de> Acked-by: Hans-Christian Egtvedt <hans-christian.egtvedt@atmel.com> Cc: Geert Uytterhoeven <geert@linux-m68k.org> Cc: Roman Zippel <zippel@linux-m68k.org> Cc: Andreas Schwab <schwab@linux-m68k.org> Cc: Greg Ungerer <gerg@uclinux.org> Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org> Cc: Paul Mackerras <paulus@samba.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* | add the common dma_addr_t typedef to include/linux/types.hFUJITA Tomonori2011-03-231-5/+0Star
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | All architectures can use the common dma_addr_t typedef now. We can remove the arch specific dma_addr_t. Signed-off-by: FUJITA Tomonori <fujita.tomonori@lab.ntt.co.jp> Acked-by: Arnd Bergmann <arnd@arndb.de> Cc: Ingo Molnar <mingo@elte.hu> Cc: Thomas Gleixner <tglx@linutronix.de> Cc: "H. Peter Anvin" <hpa@zytor.com> Cc: Ivan Kokshaysky <ink@jurassic.park.msu.ru> Cc: Richard Henderson <rth@twiddle.net> Cc: Matt Turner <mattst88@gmail.com> Cc: "Luck, Tony" <tony.luck@intel.com> Cc: Ralf Baechle <ralf@linux-mips.org> Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org> Cc: Heiko Carstens <heiko.carstens@de.ibm.com> Cc: Martin Schwidefsky <schwidefsky@de.ibm.com> Cc: Chris Metcalf <cmetcalf@tilera.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* | mm: NUMA aware alloc_thread_info_node()Eric Dumazet2011-03-232-3/+3
|/ | | | | | | | | | | | | | | | | | | Add a node parameter to alloc_thread_info(), and change its name to alloc_thread_info_node() This change is needed to allow NUMA aware kthread_create_on_cpu() Signed-off-by: Eric Dumazet <eric.dumazet@gmail.com> Acked-by: David S. Miller <davem@davemloft.net> Reviewed-by: Andi Kleen <ak@linux.intel.com> Acked-by: Rusty Russell <rusty@rustcorp.com.au> Cc: Tejun Heo <tj@kernel.org> Cc: Tony Luck <tony.luck@intel.com> Cc: Fenghua Yu <fenghua.yu@intel.com> Cc: David Howells <dhowells@redhat.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>
* powerpc/ptrace: Remove BUG_ON when full register set not availableMike Wolf2011-03-212-3/+14
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | In some cases during a threaded core dump not all the threads will have a full register set. This happens when the signal causing the core dump races with a thread exiting. The race happens when the exiting thread has entered the kernel for the last time before the signal arrives, but doesn't get far enough through the exit code to avoid being included in the core dump. So we get a thread included in the core dump which is never going to go out to userspace again and only has a partial register set recorded Normally we would catch each thread as it is about to go into userspace and capture the full register set then. However, this exiting thread is never going to go out to userspace again, so we have no way to capture its full register set. It doesn't really matter, though, as this is a thread which is effectively already dead. So instead of hitting a BUG() in this case (a really bad choice of action in the first place), we use a poison value for the register values. [BenH]: Some cosmetic/stylistic changes and fix build on ppc32 Signed-off-by: Mike Wolf <mjw@linux.vnet.ibm.com> Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
* powerpc: Factoring mpic cpu id fetching into a functionMeador Inge2011-03-211-17/+14Star
| | | | | | | | | | | | | | | The following code snippet: unsigned int cpu = 0; if (mpic->flags & MPIC_PRIMARY) cpu = hard_smp_processor_id(); is seen in several places in the 'mpic.c' code. This changeset factors that pattern out into a helper function called 'mpic_processor_id'. Signed-off-by: Meador Inge <meador_inge@mentor.com> Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org> Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
* powerpc: Make MPIC honor the "pic-no-reset" device tree propertyMeador Inge2011-03-212-11/+59
| | | | | | | | | | | | | | | | | | | | This property, defined in the Open PIC binding, tells the kernel not to use the reset bit in the global configuration register. Additionally, its presence mandates that only sources which are actually used (i.e. appear in the device tree) should have their VECPRI bits initialized. Although, "pic-no-reset" can be used for the same use cases that "protected-sources" is covering, the "protected-sources" implementation was left completely intact. This is a more pragmatic approach as there are already several existing systems which use protected sources. If "pic-no-reset" *and* "protected-sources" are both used, however, then "pic-no-reset" takes precedence in terms of the init behavior and the sanity checks done by protected sources will still take place. Signed-off-by: Meador Inge <meador_inge@mentor.com> Cc: Hollis Blanchard <hollis_blanchard@mentor.com> Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org> Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
* powerpc/pci: Fix crash in PCI code on ppc64 when matching device nodesBenjamin Herrenschmidt2011-03-211-2/+5
| | | | | | | | | | | | Commit b5d937de0367d26f65b9af1aef5f2c34c1939be0 has a bug which causes basically a NULL dereference in the PCI code during boot on ppc64 machines. fetch_dev_dn() is called when dev->dev.of_node is NULL, so using that as the starting point for the search makes no sense. It should instead start from the device node of the PHB. Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
* Merge branch 'perf-fixes-for-linus' of ↵Linus Torvalds2011-03-182-1/+24
|\ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip * 'perf-fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip: (30 commits) trace, filters: Initialize the match variable in process_ops() properly trace, documentation: Fix branch profiling location in debugfs oprofile, s390: Cleanups oprofile, s390: Remove hwsampler_files.c and merge it into init.c perf: Fix tear-down of inherited group events perf: Reorder & optimize perf_event_context to remove alignment padding on 64 bit builds perf: Handle stopped state with tracepoints perf: Fix the software events state check perf, powerpc: Handle events that raise an exception without overflowing perf, x86: Use INTEL_*_CONSTRAINT() for all PEBS event constraints perf, x86: Clean up SandyBridge PEBS events perf lock: Fix sorting by wait_min perf tools: Version incorrect with some versions of grep perf evlist: New command to list the names of events present in a perf.data file perf script: Add support for H/W and S/W events perf script: Add support for dumping symbols perf script: Support custom field selection for output perf script: Move printing of 'common' data from print_event and rename perf tracing: Remove print_graph_cpu and print_graph_proc from trace-event-parse perf script: Change process_event prototype ...
| * perf, powerpc: Handle events that raise an exception without overflowingAnton Blanchard2011-03-162-1/+24
| | | | | | | | | | | | | | | | | | | | | | | | | | | | Events on POWER7 can roll back if a speculative event doesn't eventually complete. Unfortunately in some rare cases they will raise a performance monitor exception. We need to catch this to ensure we reset the PMC. In all cases the PMC will be 256 or less cycles from overflow. Signed-off-by: Anton Blanchard <anton@samba.org> Signed-off-by: Peter Zijlstra <a.p.zijlstra@chello.nl> Cc: <stable@kernel.org> # as far back as it applies cleanly LKML-Reference: <20110309143842.6c22845e@kryten> Signed-off-by: Ingo Molnar <mingo@elte.hu>
* | Merge branch 'next' of ↵Linus Torvalds2011-03-1893-1280/+2097
|\ \ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | git://git.kernel.org/pub/scm/linux/kernel/git/benh/powerpc * 'next' of git://git.kernel.org/pub/scm/linux/kernel/git/benh/powerpc: (62 commits) powerpc/85xx: Fix signedness bug in cache-sram powerpc/fsl: 85xx: document cache sram bindings powerpc/fsl: define binding for fsl mpic interrupt controllers powerpc/fsl_msi: Handle msi-available-ranges better drivers/serial/ucc_uart.c: Add of_node_put to avoid memory leak powerpc/85xx: Fix SPE float to integer conversion failure powerpc/85xx: Update sata controller compatible for p1022ds board ATA: Add FSL sata v2 controller support powerpc/mpc8xxx_gpio: simplify searching for 'fsl, qoriq-gpio' compatiable powerpc/8xx: remove obsolete mgsuvd board powerpc/82xx: rename and update mgcoge board support powerpc/83xx: rename and update kmeter1 powerpc/85xx: Workaroudn e500 CPU erratum A005 powerpc/fsl_pci: Add support for FSL PCIe controllers v2.x powerpc/85xx: Fix writing to spin table 'cpu-release-addr' on ppc64e powerpc/pseries: Disable MSI using new interface if possible powerpc: Enable GENERIC_HARDIRQS_NO_DEPRECATED. powerpc: core irq_data conversion. powerpc: sysdev/xilinx_intc irq_data conversion. powerpc: sysdev/uic irq_data conversion. ... Fix up conflicts in arch/powerpc/sysdev/fsl_msi.c (due to getting rid of of_platform_driver in arch/powerpc)
| * \ Merge remote branch 'jwb/next' into nextBenjamin Herrenschmidt2011-03-179-7/+218
| |\ \
| | * | powerpc/476: Workaround for PLB6 hangDave Kleikamp2011-02-021-0/+35
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | The 476FP core may hang if an instruction fetch happens during an msync following a tlbsync. This workaround makes sure that enough instruction cache lines are pre-fetched before executing the msync. (sync and msync are the same to the compiler.) Signed-off-by: Dave Kleikamp <shaggy@linux.vnet.ibm.com> Signed-off-by: Josh Boyer <jwboyer@linux.vnet.ibm.com>
| | * | powerpc/476: define specific cpu table entry DD2 coreDave Kleikamp2011-02-022-5/+20
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | The DD2 core still has some unstability. Define CPU_FTR_476_DD2 to enable workarounds in later patches. This is based on an earlier, unreleased patch for DD1 by Ben Herrenschmidt. Signed-off-by: Dave Kleikamp <shaggy@linux.vnet.ibm.com> Signed-off-by: Josh Boyer <jwboyer@linux.vnet.ibm.com>
| | * | powerpc/44x: PHY fixup for USB on canyonlands boardRupjyoti Sarmah2011-02-026-2/+150
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | This fix is a reset for USB PHY that requires some amount of time for power to be stable on Canyonlands. Signed-off-by: Rupjyoti Sarmah <rsarmah@apm.com> Signed-off-by: Josh Boyer <jwboyer@linux.vnet.ibm.com>
| | * | powerpc/44x: Add USB DWC DTS entry to Canyonlands boardTirumala Marri2011-02-021-0/+13
| | | | | | | | | | | | | | | | | | | | | | | | | | | | Add Synopsys Designware DTS entry for 460EX based Canyonlands board. Signed-off-by: Tirumala R Marri<tmarri@apm.com> Signed-off-by: Josh Boyer <jwboyer@linux.vnet.ibm.com>
| * | | powerpc/85xx: Fix signedness bug in cache-sramVasiliy Kulikov2011-03-151-2/+2
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | sram_params.sram_size and sram_params.sram_offset were unsigned. If get_cache_sram_size() or get_cache_sram_offset() returns error code then it is not seen to the caller. Made sram_size and sram_offset signed. Signed-off-by: Vasiliy Kulikov <segooon@gmail.com> Signed-off-by: Kumar Gala <galak@kernel.crashing.org>
| * | | powerpc/fsl_msi: Handle msi-available-ranges betterScott Wood2011-03-151-36/+56
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Now handles multiple ranges, doesn't make assumptions about interrupt specifier format, and doesn't claim interrupts that don't correspond to an available range. Also has some better error checking. The device tree binding is updated to clarify some existing assumptions. Signed-off-by: Scott Wood <scottwood@freescale.com> Signed-off-by: Kumar Gala <galak@kernel.crashing.org>
| * | | powerpc/85xx: Fix SPE float to integer conversion failureShan Hai2011-03-151-4/+8
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Conversion from float to integer should based on both the instruction encoding and the sign of the operand. A simple testcase to show the issue: static float fm; static signed int si_min = (-2147483647 - 1); static unsigned int ui; int main() { fm = (float) si_min; ; ui = (unsigned int)fm; printf("ui=%d, should be %d\n", ui, si_min); return 0; } Result: ui=-1, should be -2147483648 Signed-off-by: Shan Hai <shan.hai@windriver.com> Signed-off-by: Kumar Gala <galak@kernel.crashing.org>
| * | | powerpc/85xx: Update sata controller compatible for p1022ds boardXulei2011-03-151-2/+2
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Update p1022 sata compatible to "fsl,p1022-sata", "fsl,pq-sata-v2". p1022ds sata controller is v2 version comparing previous FSL sata controller, for example, mpc8536. Signed-off-by: Lei Xu <B33228@freescale.com> Signed-off-by: Roy Zang <tie-fei.zang@freescale.com> Signed-off-by: Kumar Gala <galak@kernel.crashing.org>
| * | | powerpc/mpc8xxx_gpio: simplify searching for 'fsl, qoriq-gpio' compatiableAnatolij Gustschin2011-03-151-3/+1Star
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Commit da3ed89e7ce272ebcc918487e2a28736ca0dd6bb added 'fsl,qoriq-gpio' compatiable searching in the old way using for_each_compatible_node(). But the driver have previously been changed to use a struct of_device_id compatible list passed to for_each_matching_node(). Add 'fsl,qoriq-gpio' compatiable to the existing compatible list instead of adding another for_each_compatible_node() loop. Signed-off-by: Anatolij Gustschin <agust@denx.de> Signed-off-by: Kumar Gala <galak@kernel.crashing.org>
| * | | powerpc/8xx: remove obsolete mgsuvd boardHolger Brunck2011-03-155-343/+0Star
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | The MPC852 based mgsuvd board from Keymile was initially ported, but later on not developed further. This patch removes the respective files to decrease merging conflicts and unneeded maintenance. Signed-off-by: Holger Brunck <holger.brunck@keymile.com> Acked-by: Heiko Schocher<hs@denx.de> Cc: Vitaly Bordug <vitb@kernel.crashing.org> Cc: Marcelo Tosatti <marcelo@kvack.org> Signed-off-by: Kumar Gala <galak@kernel.crashing.org>
| * | | powerpc/82xx: rename and update mgcoge board supportHolger Brunck2011-03-154-48/+72
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | The mgcoge board from keymile is now base for some other similar boards. Therefore the board specific name mgcoge was renamed to a generic name km82xx. Additionally some enhancements were made: - rework partition table in dts file - add cpm2_pio_c gpio controller in dts file - update defconfig - add pin description for SCC1 - add pin description and configuration for USB Signed-off-by: Holger Brunck <holger.brunck@keymile.com> Acked-by: Heiko Schocher <hs@denx.de> CC: Benjamin Herrenschmidt <benh@kernel.crashing.org> CC: Heiko Schocher <hs@denx.de> Signed-off-by: Kumar Gala <galak@kernel.crashing.org>
| * | | powerpc/83xx: rename and update kmeter1Holger Brunck2011-03-154-53/+71
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Beside the MPC 8360 based board kmeter1 other km83xx boards from keymile will follow. Therefore the board specific naming kmeter1 for functions and files were replaced with km83xx. Additionally some updates were made: - update defconfig for 2.6.38 - rework flash partitioning in dts file - add gpio controller for qe_pio_c in dts Signed-off-by: Holger Brunck <holger.brunck@keymile.com> Acked-by: Heiko Schocher <hs@denx.de> CC: Benjamin Herrenschmidt <benh@kernel.crashing.org> CC: Heiko Schocher <hs@denx.de> Signed-off-by: Kumar Gala <galak@kernel.crashing.org>
| * | | powerpc/85xx: Workaroudn e500 CPU erratum A005Liu Yu2011-03-152-1/+54
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | This erratum can occur if a single-precision floating-point, double-precision floating-point or vector floating-point instruction on a mispredicted branch path signals one of the floating-point data interrupts which are enabled by the SPEFSCR (FINVE, FDBZE, FUNFE or FOVFE bits). This interrupt must be recorded in a one-cycle window when the misprediction is resolved. If this extremely rare event should occur, the result could be: The SPE Data Exception from the mispredicted path may be reported erroneously if a single-precision floating-point, double-precision floating-point or vector floating-point instruction is the second instruction on the correct branch path. According to errata description, some efp instructions which are not supposed to trigger SPE exceptions can trigger the exceptions in this case. However, as we haven't emulated these instructions here, a signal will send to userspace, and userspace application would exit. This patch re-issue the efp instruction that we haven't emulated, so that hardware can properly execute it again if this case happen. Signed-off-by: Liu Yu <yu.liu@freescale.com> Signed-off-by: Kumar Gala <galak@kernel.crashing.org>
| * | | powerpc/fsl_pci: Add support for FSL PCIe controllers v2.xPrabhakar Kushwaha2011-03-152-11/+21
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | FSL PCIe controller v2.1: - New MSI inbound window - Same Inbound windows address as PCIe controller v1.x Added new pit_t member(pmit) to struct ccsr_pci for MSI inbound window FSL PCIe controller v2.2 and v2.3: - Different addresses for PCIe inbound window 3,2,1 - Exposed PCIe inbound window 0 - New PCIe interrupt status register Added new config and interrupt Status register to struct ccsr_pci & updated pit_t array size to reflect the 4 inbound windows. Device tree is used to maintain backward compatibility i.e. update inbound window 1 index depending upon "compatible" field witin PCIE node. Signed-off-by: Prabhakar Kushwaha <prabhakar@freescale.com> Acked-by: Roy Zang <tie-fei.zang@freescale.com> Signed-off-by: Kumar Gala <galak@kernel.crashing.org>
| * | | powerpc/85xx: Fix writing to spin table 'cpu-release-addr' on ppc64eKumar Gala2011-03-151-1/+5
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | If the spin table is located in the linear mapping (which can happen if we have 4G or more of memory) we need to access the spin table via a cacheable coherent mapping like we do on ppc32 (and do explicit cache flush). See the following commit for the ppc32 version of this issue: commit d1d47ec6e62ab08d2ebb925fd9203abfad3adfbf Author: Peter Tyser <ptyser@xes-inc.com> Date: Fri Dec 18 16:50:37 2009 -0600 powerpc/85xx: Fix SMP when "cpu-release-addr" is in lowmem Signed-off-by: Kumar Gala <galak@kernel.crashing.org>
| * | | powerpc/pseries: Disable MSI using new interface if possibleNishanth Aravamudan2011-03-111-2/+12
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | On upcoming hardware, we have a PCI adapter with two functions, one of which uses MSI and the other uses MSI-X. This adapter, when MSI is disabled using the "old" firmware interface (RTAS_CHANGE_FN), still signals an MSI-X interrupt and triggers an EEH. We are working with the vendor to ensure that the hardware is not at fault, but if we use the "new" interface (RTAS_CHANGE_MSI_FN) to disable MSI, we also automatically disable MSI-X and the adapter does not appear to signal any stray MSI-X interrupt. Signed-off-by: Nishanth Aravamudan <nacc@us.ibm.com> Acked-by: Michael Ellerman <michael@ellerman.id.au> Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
| * | | powerpc: Enable GENERIC_HARDIRQS_NO_DEPRECATED.Lennert Buytenhek2011-03-101-0/+1
| | | | | | | | | | | | | | | | | | | | | | | | Signed-off-by: Lennert Buytenhek <buytenh@secretlab.ca> Acked-by: Grant Likely <grant.likely@secretlab.ca> Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
| * | | powerpc: core irq_data conversion.Lennert Buytenhek2011-03-102-16/+28
| | | | | | | | | | | | | | | | | | | | Signed-off-by: Lennert Buytenhek <buytenh@secretlab.ca> Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
| * | | powerpc: sysdev/xilinx_intc irq_data conversion.Lennert Buytenhek2011-03-101-23/+25
| | | | | | | | | | | | | | | | | | | | Signed-off-by: Lennert Buytenhek <buytenh@secretlab.ca> Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
| * | | powerpc: sysdev/uic irq_data conversion.Lennert Buytenhek2011-03-101-29/+30
| | | | | | | | | | | | | | | | | | | | Signed-off-by: Lennert Buytenhek <buytenh@secretlab.ca> Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
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