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*-. Merge branches 'sched-core-for-linus' and 'sched-urgent-for-linus' of ↵Linus Torvalds2011-05-193-2/+9
|\ \ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip * 'sched-core-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip: (60 commits) sched: Fix and optimise calculation of the weight-inverse sched: Avoid going ahead if ->cpus_allowed is not changed sched, rt: Update rq clock when unthrottling of an otherwise idle CPU sched: Remove unused parameters from sched_fork() and wake_up_new_task() sched: Shorten the construction of the span cpu mask of sched domain sched: Wrap the 'cfs_rq->nr_spread_over' field with CONFIG_SCHED_DEBUG sched: Remove unused 'this_best_prio arg' from balance_tasks() sched: Remove noop in alloc_rt_sched_group() sched: Get rid of lock_depth sched: Remove obsolete comment from scheduler_tick() sched: Fix sched_domain iterations vs. RCU sched: Next buddy hint on sleep and preempt path sched: Make set_*_buddy() work on non-task entities sched: Remove need_migrate_task() sched: Move the second half of ttwu() to the remote cpu sched: Restructure ttwu() some more sched: Rename ttwu_post_activation() to ttwu_do_wakeup() sched: Remove rq argument from ttwu_stat() sched: Remove rq->lock from the first half of ttwu() sched: Drop rq->lock from sched_exec() ... * 'sched-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip: sched: Fix rt_rq runtime leakage bug
| * \ Merge branch 'sched/locking' into sched/coreIngo Molnar2011-04-182-1/+4
| |\ \ | | | | | | | | | | | | | | | | | | | | | | | | Merge reason: the rq locking changes are stable, propagate them into the .40 queue. Signed-off-by: Ingo Molnar <mingo@elte.hu>
| | * | sched: Provide scheduler_ipi() callback in response to smp_send_reschedule()Peter Zijlstra2011-04-142-1/+4
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | 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
| * | | sched, sparc64: Turn cpu_coregroup_mask() into a real functionStephen Rothwell2011-04-121-1/+5
| |/ / | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | This compile error triggers on Sparc64: kernel/sched.c:7140: error: 'cpu_coregroup_mask' undeclared here (not in a function) Because after the recent scheduler domain cleanups the scheduler uses this arch method as a function pointer in a scheduler topology data structure - which is not possible with a macro. Signed-off-by: Stephen Rothwell <sfr@canb.auug.org.au> Acked-by: David S. Miller <davem@davemloft.net> Cc: Peter Zijlstra <peterz@infradead.org> Link: http://lkml.kernel.org/r/20110412140040.3020ef55.sfr@canb.auug.org.au Signed-off-by: Ingo Molnar <mingo@elte.hu>
* | | Merge branch 'perf-core-for-linus' of ↵Linus Torvalds2011-05-191-11/+14
|\ \ \ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip * 'perf-core-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip: (107 commits) perf stat: Add more cache-miss percentage printouts perf stat: Add -d -d and -d -d -d options to show more CPU events ftrace/kbuild: Add recordmcount files to force full build ftrace: Add self-tests for multiple function trace users ftrace: Modify ftrace_set_filter/notrace to take ops ftrace: Allow dynamically allocated function tracers ftrace: Implement separate user function filtering ftrace: Free hash with call_rcu_sched() ftrace: Have global_ops store the functions that are to be traced ftrace: Add ops parameter to ftrace_startup/shutdown functions ftrace: Add enabled_functions file ftrace: Use counters to enable functions to trace ftrace: Separate hash allocation and assignment ftrace: Create a global_ops to hold the filter and notrace hashes ftrace: Use hash instead for FTRACE_FL_FILTER ftrace: Replace FTRACE_FL_NOTRACE flag with a hash of ignored functions perf bench, x86: Add alternatives-asm.h wrapper x86, 64-bit: Fix copy_[to/from]_user() checks for the userspace address limit x86, mem: memset_64.S: Optimize memset by enhanced REP MOVSB/STOSB x86, mem: memmove_64.S: Optimize memmove by enhanced REP MOVSB/STOSB ...
| * \ \ Merge branch 'tip/perf/core' of ↵Ingo Molnar2011-04-271-11/+14
| |\ \ \ | | |/ / | |/| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | git://git.kernel.org/pub/scm/linux/kernel/git/rostedt/linux-2.6-trace into perf/core Conflicts: include/linux/perf_event.h Merge reason: pick up the latest jump-label enhancements, they are cooked ready. Signed-off-by: Ingo Molnar <mingo@elte.hu>
| | * | jump label: Introduce static_branch() interfaceJason Baron2011-04-041-11/+14
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Introduce: static __always_inline bool static_branch(struct jump_label_key *key); instead of the old JUMP_LABEL(key, label) macro. In this way, jump labels become really easy to use: Define: struct jump_label_key jump_key; Can be used as: if (static_branch(&jump_key)) do unlikely code enable/disale via: jump_label_inc(&jump_key); jump_label_dec(&jump_key); that's it! For the jump labels disabled case, the static_branch() becomes an atomic_read(), and jump_label_inc()/dec() are simply atomic_inc(), atomic_dec() operations. We show testing results for this change below. Thanks to H. Peter Anvin for suggesting the 'static_branch()' construct. Since we now require a 'struct jump_label_key *key', we can store a pointer into the jump table addresses. In this way, we can enable/disable jump labels, in basically constant time. This change allows us to completely remove the previous hashtable scheme. Thanks to Peter Zijlstra for this re-write. Testing: I ran a series of 'tbench 20' runs 5 times (with reboots) for 3 configurations, where tracepoints were disabled. jump label configured in avg: 815.6 jump label *not* configured in (using atomic reads) avg: 800.1 jump label *not* configured in (regular reads) avg: 803.4 Signed-off-by: Peter Zijlstra <a.p.zijlstra@chello.nl> LKML-Reference: <20110316212947.GA8792@redhat.com> Signed-off-by: Jason Baron <jbaron@redhat.com> Suggested-by: H. Peter Anvin <hpa@linux.intel.com> Tested-by: David Daney <ddaney@caviumnetworks.com> Acked-by: Ralf Baechle <ralf@linux-mips.org> Acked-by: David S. Miller <davem@davemloft.net> Acked-by: Mathieu Desnoyers <mathieu.desnoyers@efficios.com> Signed-off-by: Steven Rostedt <rostedt@goodmis.org>
* | | | drivercore: revert addition of of_match to struct deviceGrant Likely2011-05-182-3/+10
| |_|/ |/| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Commit b826291c, "drivercore/dt: add a match table pointer to struct device" added an of_match pointer to struct device to cache the of_match_table entry discovered at driver match time. This was unsafe because matching is not an atomic operation with probing a driver. If two or more drivers are attempted to be matched to a driver at the same time, then the cached matching entry pointer could get overwritten. This patch reverts the of_match cache pointer and reworks all users to call of_match_device() directly instead. Signed-off-by: Grant Likely <grant.likely@secretlab.ca>
* | | sparc32: Fixed unaligned memory copying in function ↵Tkhai Kirill2011-05-111-3/+9
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | __csum_partial_copy_sparc_generic When we are in the label cc_dword_align, registers %o0 and %o1 have the same last 2 bits, but it's not guaranteed one of them is zero. So we can get unaligned memory access in label ccte. Example of parameters which lead to this: %o0=0x7ff183e9, %o1=0x8e709e7d, %g1=3 With the parameters I had a memory corruption, when the additional 5 bytes were rewritten. This patch corrects the error. One comment to the patch. We don't care about the third bit in %o1, because cc_end_cruft stores word or less. Signed-off-by: Tkhai Kirill <tkhai@yandex.ru> Signed-off-by: David S. Miller <davem@davemloft.net>
* | | sparc32: fix sparcstation 5 bootSam Ravnborg2011-04-211-3/+7
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | The sparcstation 5 I have available has no MID property for the CPU. This resulted in a panic when booting a SMP kernel on this box. The assigned field in cpu_data is never used, so if we fail to read the MID property then inform user and continue booting. Signed-off-by: Sam Ravnborg <sam@ravnborg.org> Signed-off-by: David S. Miller <davem@davemloft.net>
* | | sparc32: fix section mismatch warnings in apc, pmc and time_32Sam Ravnborg2011-04-213-3/+3
|/ / | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | In all cases there were a struct of_device_id variable defined __initdata. But it was referenced from struct platform_driver.of_match_table which is not guaranteed to be used during init only. So drop the __initdata annotation. This fixes following warnings: WARNING: arch/sparc/kernel/built-in.o(.data+0x810): Section mismatch in reference from the variable clock_driver to the variable .init.data:clock_match The variable clock_driver references the variable __initdata clock_match If the reference is valid then annotate the variable with __init* or __refdata (see linux/init.h) or name the variable: *_template, *_timer, *_sht, *_ops, *_probe, *_probe_one, *_console WARNING: arch/sparc/kernel/built-in.o(.data+0xcec): Section mismatch in reference from the variable apc_driver to the variable .init.data:apc_match The variable apc_driver references the variable __initdata apc_match If the reference is valid then annotate the variable with __init* or __refdata (see linux/init.h) or name the variable: *_template, *_timer, *_sht, *_ops, *_probe, *_probe_one, *_console WARNING: arch/sparc/kernel/built-in.o(.data+0xd60): Section mismatch in reference from the variable pmc_driver to the variable .init.data:pmc_match The variable pmc_driver references the variable __initdata pmc_match If the reference is valid then annotate the variable with __init* or __refdata (see linux/init.h) or name the variable: *_template, *_timer, *_sht, *_ops, *_probe, *_probe_one, *_console Signed-off-by: Sam Ravnborg <sam@ravnborg.org> Signed-off-by: David S. Miller <davem@davemloft.net>
* | Merge branch 'for-linus2' of git://git.profusion.mobi/users/lucas/linux-2.6Linus Torvalds2011-04-0710-20/+20
|\ \ | | | | | | | | | | | | * 'for-linus2' of git://git.profusion.mobi/users/lucas/linux-2.6: Fix common misspellings
| * | Fix common misspellingsLucas De Marchi2011-03-3110-20/+20
| | | | | | | | | | | | | | | | | | Fixes generated by 'codespell' and manually reviewed. Signed-off-by: Lucas De Marchi <lucas.demarchi@profusion.mobi>
* | | Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/sparc-2.6Linus Torvalds2011-04-0115-17/+20
|\ \ \ | |/ / |/| | | | | | | | | | | | | | | | | | | | | | | * git://git.kernel.org/pub/scm/linux/kernel/git/davem/sparc-2.6: sparc32: Pass task_struct to schedule_tail() in ret_from_fork apbuart: Depend upon sparc. sparc64: Fix section mis-match errors. sparc32,leon: Fixed APBUART frequency detection sparc32, leon: APBUART driver must use archdata to get IRQ number sparc: Hook up syncfs system call.
| * | sparc32: Pass task_struct to schedule_tail() in ret_from_forkTkhai Kirill2011-03-311-1/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | We have to pass task_struct of previous process to function schedule_tail(). Currently in ret_from_fork previous thread_info is passed: switch_to: mov %g6, %g3 /* previous thread_info in g6 */ ret_from_fork: call schedule_tail mov %g3, %o0 /* previous thread_info is passed */ void schedule_tail(struct task_struct *prev); Signed-off-by: Tkhai Kirill <tkhai@yandex.ru> Signed-off-by: David S. Miller <davem@davemloft.net>
| * | sparc64: Fix section mis-match errors.David S. Miller2011-03-3011-14/+14
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Fix all of the problems spotted by CONFIG_DEBUG_SECTION_MISMATCH under arch/sparc during a 64-bit defconfig build. They fall into two categorites: 1) of_device_id is marked as __initdata, and we can never do this since these objects sit in the device core data structures way past boot. So even if a driver will never be reloaded, we have to keep the device ID table around. Mark such cases const instead. 2) The bootmem alloc/free handling code in mdesc.c was not fully marked __init as it should be, thus generating a reference to free_bootmem_late() (which is __init) from non-__init code. Signed-off-by: David S. Miller <davem@davemloft.net>
| * | sparc: Hook up syncfs system call.David S. Miller2011-03-293-2/+5
| | | | | | | | | | | | Signed-off-by: David S. Miller <davem@davemloft.net>
* | | genirq: Remove the now obsolete config options and select statementsThomas Gleixner2011-03-301-1/+0
|/ / | | | | | | Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
* | sparc: Use generic show_interrupts()Thomas Gleixner2011-03-292-39/+7
| | | | | | | | | | Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Cc: sparclinux@vger.kernel.org
* | sparc: Convert to new irq function namesThomas Gleixner2011-03-293-20/+16
| | | | | | | | | | | | | | Scripted with coccinelle. Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Cc: sparclinux@vger.kernel.org
* | sparc: Cleanup direct irq_desc accessThomas Gleixner2011-03-292-17/+10
| | | | | | | | | | | | | | Use the proper wrapper functions. Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Cc: sparclinux@vger.kernel.org
* | sparc: Use the new genirq functionalityThomas Gleixner2011-03-292-24/+9
|/ | | | | | | | | | | | | | | | Make use of the new features in genirq: 1) Set the chip flag IRCHIP_EOI_IF_HANDLED, which ensures in the core code that irq_eoi() is only called when the interrupt was handled. That removes the extra status check in the callback. 2) Use the preflow handler, which is called from the fasteoi core code before the device handler. That avoids another status check and the open coded handler redirection. Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Cc: sparclinux@vger.kernel.org
* Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/sparc-2.6Linus Torvalds2011-03-251-0/+4
|\ | | | | | | | | * git://git.kernel.org/pub/scm/linux/kernel/git/davem/sparc-2.6: sparc32: Fix multiple RTC detections on SUN4D
| * sparc32: Fix multiple RTC detections on SUN4DKjetil Oftedal2011-03-241-0/+4
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | During the preparation for testing the recent changes made to the SUN4D specific code in the kernel by Sam Ravnborg the following was discovered: Since the removal of of_platform_bus_type (commit: eca3930163ba8884060ce9d9ff5ef0d9b7c7b00f ) multiboard SUN4Ds have not been able to boot. The kernel crashes due to a zero-pointer error encountered when registering multiple M48T59 RTCs (There is one on each board). A patch for the was previously submitted, but the problem was not a serious at that time, as it would only generate warnings. Now the kernel will crash and stop executing before the serial console has been started. (Crash output can be viewed by using the -p boot flag) Signed-off-by: Kjetil Oftedal <oftedal@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
* | lib, arch: add filter argument to show_mem and fix private implementationsDavid Rientjes2011-03-241-1/+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>
* | remove dma64_addr_tFUJITA Tomonori2011-03-231-18/+0
| | | | | | | | | | | | | | | | | | | | | | | | | | 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>
* | bitops: remove minix bitops from asm/bitops.hAkinobu Mita2011-03-232-3/+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 Mita2011-03-232-2/+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 Mita2011-03-232-0/+2
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | 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>
* | bitops: introduce CONFIG_GENERIC_FIND_BIT_LEAkinobu Mita2011-03-231-0/+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>
* | add the common dma_addr_t typedef to include/linux/types.hFUJITA Tomonori2011-03-221-4/+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 Dumazet2011-03-224-19/+19
|/ | | | | | | | | | | | | | | | | | | 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>
* sparc: Add {open_by,name_to}_handle_at and clock_adjtime syscalls.David S. Miller2011-03-183-4/+7
| | | | Signed-off-by: David S. Miller <davem@davemloft.net>
* sparc: Implement of_iomap().David S. Miller2011-03-181-0/+14
| | | | | | Grab the pre-computed resource and map using of_ioremap(). Signed-off-by: David S. Miller <davem@davemloft.net>
* sparc: Implement of_address_to_resource().David S. Miller2011-03-181-0/+13
| | | | | | | Similarly to irq_of_parse_and_map(), find the platform_device object and return the pre-computed resource. Signed-off-by: David S. Miller <davem@davemloft.net>
* sparc: Provide NO_IRQ definition.David S. Miller2011-03-182-0/+5
| | | | Signed-off-by: David S. Miller <davem@davemloft.net>
* Merge branch 'kvm-updates/2.6.39' of git://git.kernel.org/pub/scm/virt/kvm/kvmLinus Torvalds2011-03-171-0/+2
|\ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | * 'kvm-updates/2.6.39' of git://git.kernel.org/pub/scm/virt/kvm/kvm: (55 commits) KVM: unbreak userspace that does not sets tss address KVM: MMU: cleanup pte write path KVM: MMU: introduce a common function to get no-dirty-logged slot KVM: fix rcu usage in init_rmode_* functions KVM: fix kvmclock regression due to missing clock update KVM: emulator: Fix permission checking in io permission bitmap KVM: emulator: Fix io permission checking for 64bit guest KVM: SVM: Load %gs earlier if CONFIG_X86_32_LAZY_GS=n KVM: x86: Remove useless regs_page pointer from kvm_lapic KVM: improve comment on rcu use in irqfd_deassign KVM: MMU: remove unused macros KVM: MMU: cleanup page alloc and free KVM: MMU: do not record gfn in kvm_mmu_pte_write KVM: MMU: move mmu pages calculated out of mmu lock KVM: MMU: set spte accessed bit properly KVM: MMU: fix kvm_mmu_slot_remove_write_access dropping intermediate W bits KVM: Start lock documentation KVM: better readability of efer_reserved_bits KVM: Clear async page fault hash after switching to real mode KVM: VMX: Initialize vm86 TSS only once. ...
| * mm: make __get_user_pages return -EHWPOISON for HWPOISON page optionallyHuang Ying2011-03-171-0/+2
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Make __get_user_pages return -EHWPOISON for HWPOISON page only if FOLL_HWPOISON is specified. With this patch, the interested callers can distinguish HWPOISON pages from general FAULT pages, while other callers will still get -EFAULT for all these pages, so the user space interface need not to be changed. This feature is needed by KVM, where UCR MCE should be relayed to guest for HWPOISON page, while instruction emulation and MMIO will be tried for general FAULT page. The idea comes from Andrew Morton. Signed-off-by: Huang Ying <ying.huang@intel.com> Cc: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Marcelo Tosatti <mtosatti@redhat.com> Signed-off-by: Avi Kivity <avi@redhat.com>
* | sparc32: Fix might-be-used-uninitialized warning in do_sparc_fault().David S. Miller2011-03-161-2/+1
| | | | | | | | | | | | | | | | | | | | When we try to handle vmalloc faults, we can take a code path which uses "code" before we actually set it. Amusingly gcc-3.3 notices this yet gcc-4.x does not. Reported-by: Bob Breuer <breuerr@mc.net> Signed-off-by: David S. Miller <davem@davemloft.net>
* | sparc: Fix .size directive for do_int_loadBen Hutchings2011-03-161-1/+1
| | | | | | | | | | | | | | | | | | gas used to accept (and ignore?) .size directives which referred to undefined symbols, as this does. In binutils 2.21 these are treated as errors. Signed-off-by: Ben Hutchings <ben@decadent.org.uk> Signed-off-by: David S. Miller <davem@davemloft.net>
* | sparc64: Fix build errors with gcc-4.6.0David S. Miller2011-03-1611-35/+36
| | | | | | | | | | | | | | | | | | | | | | Most of the warnings emitted (we fail arch/sparc file builds with -Werror) were legitimate but harmless, however one case (n2_pcr_write) was a genuine bug. Based almost entirely upon a patch by Sam Ravnborg. Reported-by: Dennis Gilmore <dennis@ausil.us> Signed-off-by: David S. Miller <davem@davemloft.net>
* | sparc32,sun4m: percpu and global register definitions moved to irq.hSam Ravnborg2011-03-162-21/+30
| | | | | | | | | | | | | | | | | | | | | | | | entry.S access percpu + global data defined in sun4m_irq.c - so move the types to irq.h. This makes sparse happy and allow us to utilize asm-offsets later. Also updated a few comments in the sun4m_irq.c file. Signed-off-by: Sam Ravnborg <sam@ravnborg.org> Signed-off-by: David S. Miller <davem@davemloft.net>
* | sparc32: introduce build_device_irqSam Ravnborg2011-03-164-54/+68
| | | | | | | | | | | | | | | | | | | | | | build_device_irq() is used to encapsulate the plaform specific details when we build an irq. For now the default is a simple 1:1 but sun4d differs. This patch refactors functionality - but does not change the existing functionality. Signed-off-by: Sam Ravnborg <sam@ravnborg.org> Signed-off-by: David S. Miller <davem@davemloft.net>
* | sparc32: introduce sparc_irq_configSam Ravnborg2011-03-167-18/+25
| | | | | | | | | | | | | | sparc_irq_config is used to hold the platform specific irq setup. Signed-off-by: Sam Ravnborg <sam@ravnborg.org> Signed-off-by: David S. Miller <davem@davemloft.net>
* | sparc32: fix build with leon or floppy enabledSam Ravnborg2011-03-164-15/+17
| | | | | | | | | | | | | | | | Add a few includes back required to build with floppy enabled Fix declaration of trapbase_cpu* so it is now consistent Signed-off-by: Sam Ravnborg <sam@ravnborg.org> Signed-off-by: David S. Miller <davem@davemloft.net>
* | sparc: convert to clocksource_register_hz/khzJohn Stultz2011-03-161-3/+1
| | | | | | | | | | | | | | This converts the sparc clocksources to use clocksource_register_hz/khz Signed-off-by: John Stultz <johnstul@us.ibm.com> Signed-off-by: David S. Miller <davem@davemloft.net>
* | sparc64: Sharpen address space randomization calculations.David S. Miller2011-03-161-8/+13
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | A recent patch to the x86 randomization code caused me to take a quick look at what we do on sparc64, and in doing so I noticed that we sometimes calculate a non-page-aligned randomization value and stick it into mmap_base. I also noticed that since I copied the logic over from PowerPC, the powerpc code has tweaked the randomization ranges in ways that would benefit us as well. For one thing, we should allow up to at least 8MB of randomization otherwise huge-page regions when HPAGE_SIZE is 4MB never randomize at all. And on the 64-bit side we were using up to 4GB. Tone it down to 1GB as 4GB can result in a lot of address space wastage. Finally, make sure all computations are unsigned. Signed-off-by: David S. Miller <davem@davemloft.net>
* | sparc32: irq_32.c cleanupSam Ravnborg2011-03-161-137/+92
| | | | | | | | | | | | | | | | | | | | | | | | - drop filename in file header - drop unused includes - add KERN_* to printk - fix spaces => tabs - add spaces after reserved words - drop all externs, they are now in header files Signed-off-by: Sam Ravnborg <sam@ravnborg.org> Signed-off-by: David S. Miller <davem@davemloft.net>
* | sparc32, sun4d: add comment in empty statement in sun4d_request_irq()Sam Ravnborg2011-03-161-1/+2
| | | | | | | | | | | | | | | | This looked like a bug to me. Add a comment so next reader is hopefully less confused. Signed-off-by: Sam Ravnborg <sam@ravnborg.org> Signed-off-by: David S. Miller <davem@davemloft.net>
* | sparc32,sun4d: drop unused code in sun4d_distribute_irqs()Sam Ravnborg2011-03-161-47/+0
| | | | | | | | | | | | | | | | The preprocessor symbol was not defined and the code was therefore not in use. Signed-off-by: Sam Ravnborg <sam@ravnborg.org> Signed-off-by: David S. Miller <davem@davemloft.net>
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