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* Merge branch 'setns'Linus Torvalds2011-05-282-1/+3
|\ | | | | | | | | | | | | | | * setns: ns: Wire up the setns system call Done as a merge to make it easier to fix up conflicts in arm due to addition of sendmmsg system call
| * ns: Wire up the setns system callEric W. Biederman2011-05-282-1/+3
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | 32bit and 64bit on x86 are tested and working. The rest I have looked at closely and I can't find any problems. setns is an easy system call to wire up. It just takes two ints so I don't expect any weird architecture porting problems. While doing this I have noticed that we have some architectures that are very slow to get new system calls. cris seems to be the slowest where the last system calls wired up were preadv and pwritev. avr32 is weird in that recvmmsg was wired up but never declared in unistd.h. frv is behind with perf_event_open being the last syscall wired up. On h8300 the last system call wired up was epoll_wait. On m32r the last system call wired up was fallocate. mn10300 has recvmmsg as the last system call wired up. The rest seem to at least have syncfs wired up which was new in the 2.6.39. v2: Most of the architecture support added by Daniel Lezcano <dlezcano@fr.ibm.com> v3: ported to v2.6.36-rc4 by: Eric W. Biederman <ebiederm@xmission.com> v4: Moved wiring up of the system call to another patch v5: ported to v2.6.39-rc6 v6: rebased onto parisc-next and net-next to avoid syscall conflicts. v7: ported to Linus's latest post 2.6.39 tree. >  arch/blackfin/include/asm/unistd.h     |    3 ++- >  arch/blackfin/mach-common/entry.S      |    1 + Acked-by: Mike Frysinger <vapier@gentoo.org> Oh - ia64 wiring looks good. Acked-by: Tony Luck <tony.luck@intel.com> Signed-off-by: Eric W. Biederman <ebiederm@xmission.com> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* | arch: remove CONFIG_GENERIC_FIND_{NEXT_BIT,BIT_LE,LAST_BIT}Akinobu Mita2011-05-261-3/+0
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | By the previous style change, CONFIG_GENERIC_FIND_NEXT_BIT, CONFIG_GENERIC_FIND_BIT_LE, and CONFIG_GENERIC_FIND_LAST_BIT are not used to test for existence of find bitops anymore. Signed-off-by: Akinobu Mita <akinobu.mita@gmail.com> Acked-by: Greg Ungerer <gerg@uclinux.org> Cc: Arnd Bergmann <arnd@arndb.de> Cc: Russell King <linux@arm.linux.org.uk> Cc: Martin Schwidefsky <schwidefsky@de.ibm.com> Cc: Heiko Carstens <heiko.carstens@de.ibm.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* | cgroup: remove the ns_cgroupDaniel Lezcano2011-05-261-1/+0
|/ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | The ns_cgroup is an annoying cgroup at the namespace / cgroup frontier and leads to some problems: * cgroup creation is out-of-control * cgroup name can conflict when pids are looping * it is not possible to have a single process handling a lot of namespaces without falling in a exponential creation time * we may want to create a namespace without creating a cgroup The ns_cgroup was replaced by a compatibility flag 'clone_children', where a newly created cgroup will copy the parent cgroup values. The userspace has to manually create a cgroup and add a task to the 'tasks' file. This patch removes the ns_cgroup as suggested in the following thread: https://lists.linux-foundation.org/pipermail/containers/2009-June/018616.html The 'cgroup_clone' function is removed because it is no longer used. This is a userspace-visible change. Commit 45531757b45c ("cgroup: notify ns_cgroup deprecated") (merged into 2.6.27) caused the kernel to emit a printk warning users that the feature is planned for removal. Since that time we have heard from XXX users who were affected by this. Signed-off-by: Daniel Lezcano <daniel.lezcano@free.fr> Signed-off-by: Serge E. Hallyn <serge.hallyn@canonical.com> Cc: Eric W. Biederman <ebiederm@xmission.com> Cc: Jamal Hadi Salim <hadi@cyberus.ca> Reviewed-by: Li Zefan <lizf@cn.fujitsu.com> Acked-by: Paul Menage <menage@google.com> Acked-by: Matt Helsley <matthltc@us.ibm.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* mn10300: convert old cpumask API into new oneKOSAKI Motohiro2011-05-254-63/+68
| | | | | | | | | | | | | | | Adapt to the new API. We plan to remove old cpumask APIs later. Thus this patch converts them into the new one. Signed-off-by: KOSAKI Motohiro <kosaki.motohiro@jp.fujitsu.com> Cc: David Howells <dhowells@redhat.com> Cc: Koichi Yasutake <yasutake.koichi@jp.panasonic.com> Cc: Hugh Dickins <hughd@google.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: now that all old mmu_gather code is gone, remove the storagePeter Zijlstra2011-05-251-2/+0
| | | | | | | | | | | | | | | | | | | | | | Fold all the mmu_gather rework patches into one for submission Signed-off-by: Peter Zijlstra <a.p.zijlstra@chello.nl> Reported-by: Hugh Dickins <hughd@google.com> Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org> Cc: David Miller <davem@davemloft.net> Cc: Martin Schwidefsky <schwidefsky@de.ibm.com> Cc: Russell King <rmk@arm.linux.org.uk> Cc: Paul Mundt <lethal@linux-sh.org> Cc: Jeff Dike <jdike@addtoit.com> Cc: Richard Weinberger <richard@nod.at> Cc: Tony Luck <tony.luck@intel.com> Cc: KAMEZAWA Hiroyuki <kamezawa.hiroyu@jp.fujitsu.com> Cc: Mel Gorman <mel@csn.ul.ie> Cc: KOSAKI Motohiro <kosaki.motohiro@jp.fujitsu.com> Cc: Nick Piggin <npiggin@kernel.dk> Cc: Namhyung Kim <namhyung@gmail.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* Merge branch 'for-2.6.40' of ↵Linus Torvalds2011-05-241-1/+1
|\ | | | | | | | | | | | | | | | | | | | | | | git://git.kernel.org/pub/scm/linux/kernel/git/tj/percpu * 'for-2.6.40' of git://git.kernel.org/pub/scm/linux/kernel/git/tj/percpu: percpu: Unify input section names percpu: Avoid extra NOP in percpu_cmpxchg16b_double percpu: Cast away printk format warning percpu: Always align percpu output section to PAGE_SIZE Fix up fairly trivial conflict in arch/x86/include/asm/percpu.h as per Tejun
| * percpu: Always align percpu output section to PAGE_SIZETejun Heo2011-03-241-1/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Percpu allocator honors alignment request upto PAGE_SIZE and both the percpu addresses in the percpu address space and the translated kernel addresses should be aligned accordingly. The calculation of the former depends on the alignment of percpu output section in the kernel image. The linker script macros PERCPU_VADDR() and PERCPU() are used to define this output section and the latter takes @align parameter. Several architectures are using @align smaller than PAGE_SIZE breaking percpu memory alignment. This patch removes @align parameter from PERCPU(), renames it to PERCPU_SECTION() and makes it always align to PAGE_SIZE. While at it, add PCPU_SETUP_BUG_ON() checks such that alignment problems are reliably detected and remove percpu alignment comment recently added in workqueue.c as the condition would trigger BUG way before reaching there. For um, this patch raises the alignment of percpu area. As the area is in .init, there shouldn't be any noticeable difference. This problem was discovered by David Howells while debugging boot failure on mn10300. Signed-off-by: Tejun Heo <tj@kernel.org> Acked-by: Mike Frysinger <vapier@gentoo.org> Cc: uclinux-dist-devel@blackfin.uclinux.org Cc: David Howells <dhowells@redhat.com> Cc: Jeff Dike <jdike@addtoit.com> Cc: user-mode-linux-devel@lists.sourceforge.net
* | sched: Provide scheduler_ipi() callback in response to smp_send_reschedule()Peter Zijlstra2011-04-141-4/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | For future rework of try_to_wake_up() we'd like to push part of that function onto the CPU the task is actually going to run on. In order to do so we need a generic callback from the existing scheduler IPI. This patch introduces such a generic callback: scheduler_ipi() and implements it as a NOP. BenH notes: PowerPC might use this IPI on offline CPUs under rare conditions! Acked-by: Russell King <rmk+kernel@arm.linux.org.uk> Acked-by: Martin Schwidefsky <schwidefsky@de.ibm.com> Acked-by: Chris Metcalf <cmetcalf@tilera.com> Acked-by: Jesper Nilsson <jesper.nilsson@axis.com> Acked-by: Benjamin Herrenschmidt <benh@kernel.crashing.org> Signed-off-by: Ralf Baechle <ralf@linux-mips.org> Reviewed-by: Frank Rowand <frank.rowand@am.sony.com> Cc: Mike Galbraith <efault@gmx.de> Cc: Nick Piggin <npiggin@kernel.dk> Cc: Linus Torvalds <torvalds@linux-foundation.org> Cc: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Ingo Molnar <mingo@elte.hu> Signed-off-by: Peter Zijlstra <a.p.zijlstra@chello.nl> Link: http://lkml.kernel.org/r/20110405152728.744338123@chello.nl
* | Fix common misspellingsLucas De Marchi2011-03-311-1/+1
| | | | | | | | | | | | Fixes generated by 'codespell' and manually reviewed. Signed-off-by: Lucas De Marchi <lucas.demarchi@profusion.mobi>
* | genirq: Remove the now obsolete config options and select statementsThomas Gleixner2011-03-301-1/+0
| | | | | | | | Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
* | mn10300: Use generic show_interrupts()Thomas Gleixner2011-03-292-58/+11
| | | | | | | | Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
* | mn10300: Cleanup irq_desc accessThomas Gleixner2011-03-291-6/+5
| | | | | | | | | | | | The migration needs only access to irq_data. Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
* | mn10300: Convert genirq namespaceThomas Gleixner2011-03-294-11/+12
|/ | | | | | Convert to new function names. Converted with coccinelle. Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
* Merge branch 'next' of ↵Linus Torvalds2011-03-2437-502/+1893
|\ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | git://git.kernel.org/pub/scm/linux/kernel/git/dhowells/linux-2.6-mn10300 * 'next' of git://git.kernel.org/pub/scm/linux/kernel/git/dhowells/linux-2.6-mn10300: MN10300: gcc 4.6 vs am33 inline assembly MN10300: Deprecate gdbstub MN10300: Allow KGDB to use the MN10300 serial ports MN10300: Emulate single stepping in KGDB on MN10300 MN10300: Generalise kernel debugger kernel halt, reboot or power off hook KGDB: Notify GDB of machine halt, reboot or power off MN10300: Use KGDB MN10300: Create generic kernel debugger hooks MN10300: Create general kernel debugger cache flushing MN10300: Introduce a general config option for kernel debugger hooks MN10300: The icache invalidate functions should disable the icache first MN10300: gdbstub: Restrict single-stepping to non-preemptable non-SMP configs
| * MN10300: gcc 4.6 vs am33 inline assemblyRichard Henderson2011-03-231-4/+17
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | GCC 4.6 explicitly represents the MDR register. It may be accessed via the "z" constraint. Perhaps more importantly, it tracks when the MDR register is clobbered and uses the RETF instruction if the incoming value is still valid. Thus it is important to (at least) clobber the MDR register in relevant inline assembly fragments, lest RETF be used incorrectly. The only instances I could find are here. There are reads of the MDR register in kernel/gdb-stub.c, but that's harmless. Although, frankly, __builtin_return_address(0) might be a better thing in those cases. Certainly MDR isn't going to contain anything else that might be useful... Signed-off-by: Richard Henderson <rth@redhat.com> Signed-off-by: David Howells <dhowells@redhat.com>
| * MN10300: Deprecate gdbstubDavid Howells2011-03-181-1/+4
| | | | | | | | | | | | | | | | | | Deprecate the MN10300 arch's gdbstub in favour of KGDB, which is more capable in some areas (such as SMP) and almost as capable in others (it's I/O is not as decoupled and it can't start as early). gdbstub will be removed in a later version when we're satisfied with KGDB's working. Signed-off-by: David Howells <dhowells@redhat.com>
| * MN10300: Allow KGDB to use the MN10300 serial portsDavid Howells2011-03-181-0/+75
| | | | | | | | | | | | | | | | | | | | | | | | Allow KGDB to use the MN10300 serial ports through the polled I/O interface provided via the TTY/serial layer and the kgdboc driver. This allows the kernel to be started with something like: kgdboc=ttySM0,115200 added to the command line. Signed-off-by: David Howells <dhowells@redhat.com>
| * MN10300: Emulate single stepping in KGDB on MN10300David Howells2011-03-183-12/+425
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Emulate single stepping in KGDB on MN10300 by way of temporary breakpoint insertion. These breakpoints are never actually seen by KGDB, and will overlay KGDB's own breakpoints. The breakpoints are removed by switch_to() and reinstalled on switching back so that if preemption occurs, the preempting task doesn't hit them (though it will still hit KGDB's regular breakpoints). If KGDB is reentered for any reason, then the single step breakpoint is completely erased and must be set again by the debugger. We take advantage of the fact that KGDB will effectively halt all other CPUs whilst this CPU is single-stepping to avoid SMP problems. If the single-stepping task is preempted and killed without KGDB being reinvoked, then the breakpoint(s) will be cleared and KGDB will be jumped back into. Signed-off-by: David Howells <dhowells@redhat.com>
| * MN10300: Generalise kernel debugger kernel halt, reboot or power off hookDavid Howells2011-03-181-3/+3
| | | | | | | | | | | | | | | | Generalise the kernel debugger hook for notification of halt, reboot or power off. This is used by gdbstub to tell the debugger it is exiting. This will be useful for KGDB too. Signed-off-by: David Howells <dhowells@redhat.com>
| * MN10300: Use KGDBDavid Howells2011-03-186-2/+289
| |
| * MN10300: Create generic kernel debugger hooksDavid Howells2011-03-1814-248/+317
| | | | | | | | | | | | | | Create generic kernel debugger hooks in the MN10300 arch and make gdbstub use them. This is a preparation for KGDB support. Signed-off-by: David Howells <dhowells@redhat.com>
| * MN10300: Create general kernel debugger cache flushingDavid Howells2011-03-1817-158/+592
| | | | | | | | | | | | | | Create general kernel debugger cache flushing for MN10300 and get rid of the old stuff that gdbstub was using. Signed-off-by: David Howells <dhowells@redhat.com>
| * MN10300: Introduce a general config option for kernel debugger hooksDavid Howells2011-03-183-1/+25
| | | | | | | | | | | | | | Introduce a general config option for kernel debugger hooks so that both gdbstub and kgdb can use it and add a header file for both debuggers to use. Signed-off-by: David Howells <dhowells@redhat.com>
| * MN10300: The icache invalidate functions should disable the icache firstDavid Howells2011-03-183-83/+140
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | The icache invalidate functions should disable the icache on AM33 and wait for it to quiesce before attempting to invalidate it, and should then wait for it to quiesce again before reenabling it, but on AM34 they should invalidate directly. The same goes for the dcache invalidation, but this isn't used much. Whilst we're at it, this can be wrapped in assembler macros to remove duplicate code. The AM33 manual states that: An operation that invalidates the cache, switches the writing mode, or changes the way mode must be performed after disabling the cache, checking the busy bit, and confirming that the cache is not in operation. for the dcache [sec 2.8.3.2.1]. This is not stated so for the icache [sec 2.8.3.1.1] but the example code there suggests that it is. Whilst the AM34 manual states that the cache must be disabled for both the icache [sec 1.8.3.2.1] and the dcache [sec 1.8.3.2.1], the Panasonic hardware engineers say the manual is wrong and that disabling the caches for invalidation is wrong. Furthermore, they say that disabling the caches on the AM34 whilst running an SMP kernel can lead to incoherency between the various CPU caches and should thus be avoided. Signed-off-by: David Howells <dhowells@redhat.com>
| * MN10300: gdbstub: Restrict single-stepping to non-preemptable non-SMP configsDavid Howells2011-03-182-2/+18
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Restrict single-stepping through the kernel using gdbstub to non-preemptable non-SMP configs as gdbstub has to do software single-stepping by means of temporary breakpoints. Hardware single-stepping is unavailable as Panasonic have not sufficiently documented the interface to it. Software single-stepping through preemptable or SMP kernels runs into problems as it makes it much more likely that the wrong thread will hit the temporary breakpoints. It seems impractical to work around the problem for the most part. It could be possible to make a UP preemptable kernel switch temporary breakpoints in and out in switch_to(). Signed-off-by: David Howells <dhowells@redhat.com>
* | bitops: remove minix bitops from asm/bitops.hAkinobu Mita2011-03-231-1/+0
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | 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 Mita2011-03-231-1/+0
| | | | | | | | | | | | | | | | | | | | | | | | 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 little-endian bitops for most architecturesAkinobu Mita2011-03-231-0/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Introduce little-endian bit operations to the big-endian architectures which do not have native little-endian bit operations and the little-endian architectures. (alpha, avr32, blackfin, cris, frv, h8300, ia64, m32r, mips, mn10300, parisc, sh, sparc, tile, x86, xtensa) These architectures can just include generic implementation (asm-generic/bitops/le.h). Signed-off-by: Akinobu Mita <akinobu.mita@gmail.com> 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> Acked-by: Hans-Christian Egtvedt <hans-christian.egtvedt@atmel.com> Acked-by: "H. Peter Anvin" <hpa@zytor.com> 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 Tomonori2011-03-221-7/+0
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | 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 Dumazet2011-03-221-2/+4
|/ | | | | | | | | | | | | | | | | | | 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>
* MN10300: Clear ASB2364 peripheral interrupt masks before enabling interruptsDavid Howells2011-03-182-0/+55
| | | | | | | | | | | Clear the interrupt mask registers of ASB2364 peripherals before enabling interrupts so that any peripherals that weren't dealt with by the bootloader after a reboot (if there was one) won't cause an interrupt storm when interrupts are first enabled before the drivers are initialised. Also, attempt to reset the peripherals attached to the FPGA. Signed-off-by: David Howells <dhowells@redhat.com>
* MN10300: Fix the ASB2364 gdbport UART register defsDavid Howells2011-03-181-12/+12
| | | | | | | Fix the ASB2364 gdbport UART register definitions. These registers are actually 2 bytes apart, not 4 (which the ASB2303 and ASB2305 are). Signed-off-by: David Howells <dhowells@redhat.com>
* MN10300: Fix ASB2364 FPGA register defsDavid Howells2011-03-181-1/+1
| | | | | | | | Fix the definition of the ASB2364 FPGA IRQ detect registers. They accidentally got defined to be the same as the mask registers when the patches were being ported to the upstream kernel. Signed-off-by: David Howells <dhowells@redhat.com>
* MN10300: Select GENERIC_HARDIRQS_NO_DEPRECATEDThomas Gleixner2011-03-183-5/+6
| | | | | | | All chips converted. Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Signed-off-by: David Howells <dhowells@redhat.com>
* MN10300: Select HAVE_GENERIC_HARDIRQS rather than GENERIC_HARDIRQSDavid Howells2011-03-181-1/+1
| | | | | | | | | Select HAVE_GENERIC_HARDIRQS rather than GENERIC_HARDIRQS in MN10300's main Kconfig file to avoid this warning: warning: (MN10300) selects GENERIC_HARDIRQS which has unmet direct dependencies (HAVE_GENERIC_HARDIRQS) Signed-off-by: David Howells <dhowells@redhat.com>
* MN10300: Convert ASB2364 FPGA irq_chip to new functionsThomas Gleixner2011-03-181-13/+13
| | | | | Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Signed-off-by: David Howells <dhowells@redhat.com>
* MN10300: Convert ipi irq_chip to new functionsThomas Gleixner2011-03-181-8/+22
| | | | | Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Signed-off-by: David Howells <dhowells@redhat.com>
* MN10300: Convert serial irq_chip to new functionsThomas Gleixner2011-03-181-5/+10
| | | | | Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Signed-off-by: David Howells <dhowells@redhat.com>
* MN10300: Convert cpu irq_chips to new functionsThomas Gleixner2011-03-181-29/+33
| | | | | Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Signed-off-by: David Howells <dhowells@redhat.com>
* MN10300: Remove unused mn10300_intc_* functionsThomas Gleixner2011-03-182-30/+0
| | | | | | | No users. Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Signed-off-by: David Howells <dhowells@redhat.com>
* MN10300: Remove stale irq_chip.end - V2Thomas Gleixner2011-03-181-1/+0
| | | | | | | irq_chip.end is obsolete with the removal of __do_IRQ(). Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Signed-off-by: David Howells <dhowells@redhat.com>
* MN10300: Use clockevents_calc_mult_shift()Thomas Gleixner2011-03-183-26/+3
| | | | | | | | | | | Use clockevents_calc_mult_shift() instead of the homebrewn function in mn10300/kernel/time.c. Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Acked-by: John Stultz <johnstul@us.ibm.com> Cc: Koichi Yasutake <yasutake.koichi@jp.panasonic.com> Cc: Mark Salter <msalter@redhat.com> Signed-off-by: David Howells <dhowells@redhat.com>
* MN10300: Use clocksource_register_hz()Thomas Gleixner2011-03-183-21/+1
| | | | | | | | | | | clocksource_register_hz() calculates the shift/mult pair for the clocksource. Remove the mn10300 duplicate implementation. Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Acked-by: John Stultz <johnstul@us.ibm.com> Cc: Koichi Yasutake <yasutake.koichi@jp.panasonic.com> Cc: Mark Salter <msalter@redhat.com> Signed-off-by: David Howells <dhowells@redhat.com>
* MN10300: Remove stale codeThomas Gleixner2011-03-183-67/+2
| | | | | | | | | | | | mn10300 implements clocksource and clockevents and selects them unconditionally in Kconfig. Remove the stale code which seems to be a leftover of the conversion. Cleanup the configuration switches as well. Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Acked-by: John Stultz <johnstul@us.ibm.com> Cc: Koichi Yasutake <yasutake.koichi@jp.panasonic.com> Cc: Mark Salter <msalter@redhat.com> Signed-off-by: David Howells <dhowells@redhat.com>
* Merge branch 'for-2.6.39' of ↵Linus Torvalds2011-03-161-1/+1
|\ | | | | | | | | | | | | | | | | | | | | | | | | | | git://git.kernel.org/pub/scm/linux/kernel/git/tj/percpu * 'for-2.6.39' of git://git.kernel.org/pub/scm/linux/kernel/git/tj/percpu: percpu, x86: Add arch-specific this_cpu_cmpxchg_double() support percpu: Generic support for this_cpu_cmpxchg_double() alpha: use L1_CACHE_BYTES for cacheline size in the linker script percpu: align percpu readmostly subsection to cacheline Fix up trivial conflict in arch/x86/kernel/vmlinux.lds.S due to the percpu alignment having changed ("x86: Reduce back the alignment of the per-CPU data section")
| * percpu: align percpu readmostly subsection to cachelineTejun Heo2011-01-251-1/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Currently percpu readmostly subsection may share cachelines with other percpu subsections which may result in unnecessary cacheline bounce and performance degradation. This patch adds @cacheline parameter to PERCPU() and PERCPU_VADDR() linker macros, makes each arch linker scripts specify its cacheline size and use it to align percpu subsections. This is based on Shaohua's x86 only patch. Signed-off-by: Tejun Heo <tj@kernel.org> Cc: Shaohua Li <shaohua.li@intel.com>
* | Merge branch 'timers-core-for-linus' of ↵Linus Torvalds2011-03-151-5/+1
|\ \ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip * 'timers-core-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip: (62 commits) posix-clocks: Check write permissions in posix syscalls hrtimer: Remove empty hrtimer_init_hres_timer() hrtimer: Update hrtimer->state documentation hrtimer: Update base[CLOCK_BOOTTIME].offset correctly timers: Export CLOCK_BOOTTIME via the posix timers interface timers: Add CLOCK_BOOTTIME hrtimer base time: Extend get_xtime_and_monotonic_offset() to also return sleep time: Introduce get_monotonic_boottime and ktime_get_boottime hrtimers: extend hrtimer base code to handle more then 2 clockids ntp: Remove redundant and incorrect parameter check mn10300: Switch do_timer() to xtimer_update() posix clocks: Introduce dynamic clocks posix-timers: Cleanup namespace posix-timers: Add support for fd based clocks x86: Add clock_adjtime for x86 posix-timers: Introduce a syscall for clock tuning. time: Splitout compat timex accessors ntp: Add ADJ_SETOFFSET mode bit time: Introduce timekeeping_inject_offset posix-timer: Update comment ... Fix up new system-call-related conflicts in arch/x86/ia32/ia32entry.S arch/x86/include/asm/unistd_32.h arch/x86/include/asm/unistd_64.h arch/x86/kernel/syscall_table_32.S (name_to_handle_at()/open_by_handle_at() vs clock_adjtime()), and some due to movement of get_jiffies_64() in: kernel/time.c
| * | mn10300: Switch do_timer() to xtimer_update()Torben Hohn2011-02-091-5/+1
| |/ | | | | | | | | | | | | | | | | | | | | | | Only one CPU gets the timer interrupt so mn10300_last_tsc does not need to be protected by xtime lock. Remove xtime lovking and use xtime_update() which does the locking itself. Signed-off-by: Torben Hohn <torbenh@gmx.de> Cc: David Howells <dhowells@redhat.com> Cc: Koichi Yasutake <yasutake.koichi@jp.panasonic.com> LKML-Reference: <20110127150011.23248.62040.stgit@localhost> Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
* | MN10300: atomic_read() should ensure it emits a loadDavid Howells2011-03-141-1/+1
| | | | | | | | | | | | | | | | atomic_read() needs to ensure that it emits a load (which it can do by using ACCESS_ONCE()). Reported-by: Peter Zijlstra <peterz@infradead.org> Signed-off-by: David Howells <dhowells@redhat.com>
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