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2011-04-05powerpc/kexec: Fix mismatched ifdefs for PPC64/SMP.Paul Gortmaker
Commit b3df895aebe091b1657 "powerpc/kexec: Add support for FSL-BookE" introduced the original PPC_STD_MMU_64 checks around the function crash_kexec_wait_realmode(). Then commit c2be05481f61252 "powerpc: Fix default_machine_crash_shutdown #ifdef botch" changed the ifdef around the calling site to add a check on SMP, but the ifdef around the function itself was left unchanged, leaving an unused function for PPC_STD_MMU_64=y and SMP=n Rather than have two ifdefs that can get out of sync like this, simply put the corrected conditional around the function and use a stub to get rid of one set of ifdefs completely. Signed-off-by: Paul Gortmaker <paul.gortmaker@windriver.com> Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
2011-04-05Merge remote branch 'kumar/merge' into mergeBenjamin Herrenschmidt
2011-04-04Merge branch 'next' of git://git.monstr.eu/linux-2.6-microblazeLinus Torvalds
* 'next' of git://git.monstr.eu/linux-2.6-microblaze: microblaze: Fix ftrace microblaze: Wire up new syscalls microblaze: Fix level/edge irq sensibility
2011-04-04Documentation: fix minor typos/spellingSylvestre Ledru
Fix some minor typos: * informations => information * there own => their own * these => this Signed-off-by: Sylvestre Ledru <sylvestre.ledru@scilab.org> Signed-off-by: Randy Dunlap <randy.dunlap@oracle.com> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2011-04-04xen/debug: Don't be so verbose with WARN on 1-1 mapping errors.Konrad Rzeszutek Wilk
There are valid situations in which this error is not a warning. Mainly when QEMU maps a guest memory and uses the VM_IO flag to set the MFNs. For right now make the WARN be WARN_ONCE. In the future we will: 1). Remove the VM_IO code handling.. 2). .. which will also remove this debug facility. Signed-off-by: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com>
2011-04-04Merge branch 'x86-fixes-for-linus' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip * 'x86-fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip: x86, UV: Fix kdump reboot x86, amd-nb: Rename CPU PCI id define for F4 sound: Add delay.h to sound/soc/codecs/sn95031.c x86, mtrr, pat: Fix one cpu getting out of sync during resume x86, microcode: Unregister syscore_ops after microcode unloaded x86: Stop including <linux/delay.h> in two asm header files
2011-04-04Merge branch 'perf-fixes-for-linus' of ↵Linus Torvalds
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: perf: Fix task_struct reference leak perf: Fix task context scheduling perf: mmap 512 kiB by default perf: Rebase max unprivileged mlock threshold on top of page size perf tools: Fix NO_NEWT=1 python build error perf symbols: Properly align symbol_conf.priv_size perf tools: Emit clearer message for sys_perf_event_open ENOENT return perf tools: Fixup exit path when not able to open events perf symbols: Fix vsyscall symbol lookup oprofile, x86: Allow setting EDGE/INV/CMASK for counter events
2011-04-04Merge branch 'core-fixes-for-linus' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip * 'core-fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip: rcu: create new rcu_access_index() and use in mce WARN_ON_SMP(): Add comment to explain ({0;})
2011-04-04Merge branch 'unicore32' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/epip/linux-2.6-unicore32 * 'unicore32' of git://git.kernel.org/pub/scm/linux/kernel/git/epip/linux-2.6-unicore32: unicore32 framebuffer fix: get videomemory by __get_free_pages() and make it floatable unicore32 core architecture: remove duplicated #include unicore32 rtc driver fix: cleanup irq_set_freq and irq_set_state unicore32 fix: remove arch-specific futex support unicore32 ldscript fix: add cacheline parameter to PERCPU() macro
2011-04-04x86-32, NUMA: Fix ACPI NUMA init broken by recent x86-64 changeTejun Heo
Commit d8fc3afc49 (x86, NUMA: Move *_numa_init() invocations into initmem_init()) moved acpi_numa_init() call into NUMA initmem_init() but forgot to update 32bit NUMA init breaking ACPI NUMA configuration for 32bit. acpi_numa_init() call was later moved again to srat_64.c. Match it by adding the call to get_memcfg_from_srat() in srat_32.c. Signed-off-by: Tejun Heo <tj@kernel.org> Cc: Yinghai Lu <yinghai@kernel.org> Cc: Cyrill Gorcunov <gorcunov@gmail.com> Cc: David Rientjes <rientjes@google.com> Cc: H. Peter Anvin <hpa@linux.intel.com> LKML-Reference: <20110404100645.GE1420@mtj.dyndns.org> Signed-off-by: Ingo Molnar <mingo@elte.hu>
2011-04-04x86: visws: Fixup irq overhaul falloutThomas Gleixner
Reported-by: Ian Campbell <Ian.Campbell@eu.citrix.com> Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
2011-04-04powerpc/85xx: Update dts for PCIe memory maps to match u-boot of Px020RDBPrabhakar Kushwaha
PCIe memory address space is 1:1 mapped with u-boot. Update dts of Px020RDB i.e. P1020RDB and P2020RDB to match the address map changes in u-boot. Signed-off-by: Prabhakar Kushwaha <prabhakar@freescale.com> Signed-off-by: Kumar Gala <galak@kernel.crashing.org>
2011-04-04[S390] compile fix for latest binutilsMartin Schwidefsky
The latest binutils won't accept the stfl instruction with march=g5 which is the correct behaviour. Unfortunately head.S is assembled with -march=g5 even if the target cpu is z900 or later. To get 31-bit kernels compiled again the easiest fix is to use the .insn notation for the stfl instruction in head.S. Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
2011-04-04[S390] Fix parameter passing for smp_switch_to_cpu()Michael Holzheu
After the execution has been switched to the destination CPU, the target function is called with the wrong parameter. According to the C calling convention on s390, the first parameter should be loaded into register 2. Currently in smp_restart_cpu() it is stored in register 3. To fix this, we load the parameter into the correct register 2. Signed-off-by: Michael Holzheu <holzheu@linux.vnet.ibm.com> Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
2011-04-04[S390] oprofile s390: prevent stack corruptionJan Glauber
Prevent stack corruption by memcpy which copies more bytes then available at the destination. While at it use the new test_facility to test for the facility bit. Signed-off-by: Jan Glauber <jang@linux.vnet.ibm.com> Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
2011-04-02ARM: Only allow PM_SLEEP with CPUs which support suspendRussell King
Offering CONFIG_PM_SLEEP for CPUs which do not support suspend leads to build errors, so only set CONFIG_ARCH_SUSPEND_POSSIBLE if we have a CPU selected which supports suspend. Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2011-04-02ARM: Make consolidated PM sleep code depend on PM_SLEEPRussell King
CONFIG_PM is now set whenever we support either runtime PM in addition to suspend and hibernate. This causes build errors when runtime PM is enabled on a platform, but the CPU does not have the appropriate support for suspend. So, switch this code to use CONFIG_PM_SLEEP rather than CONFIG_PM to allow runtime PM to be enabled without causing build errors. Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2011-04-02unicore32 framebuffer fix: get videomemory by __get_free_pages() and make it ↵Guan Xuetao
floatable 1. get videomemory by __get_free_pages() in fb-puv3.c 2. remove resource reservation for old fixed UNIGFX_MMAP & UVC_MMAP space 3. remove unused macros: PKUNTIY_UNIGFX_MMAP_BASE, PKUNITY_UNIGFX_MMAP_SIZE, PKUNITY_UVC_MMAP_BASE, PKUNITY_UVC_MMAP_SIZE and KUSER_UNIGFX_BASE 4. remove unused header linux/vmalloc.h in fb-puv3.h Signed-off-by: Guan Xuetao <gxt@mprc.pku.edu.cn> Acked-by: Arnd Bergmann <arnd@arndb.de>
2011-04-02unicore32 core architecture: remove duplicated #includeHuang Weiyi
Remove duplicated #include('s) in arch/unicore32/kernel/traps.c Signed-off-by: Huang Weiyi <weiyi.huang@gmail.com> Acked-by: Guan Xuetao <gxt@mprc.pku.edu.cn>
2011-04-02unicore32 rtc driver fix: cleanup irq_set_freq and irq_set_stateGuan Xuetao
Signed-off-by: Guan Xuetao <gxt@mprc.pku.edu.cn>
2011-04-02unicore32 fix: remove arch-specific futex supportGuan Xuetao
The futex functions in unicore32 are not used and verified, so just replaced by asm-generic version. Signed-off-by: Guan Xuetao <gxt@mprc.pku.edu.cn> Acked-by: Arnd Bergmann <arnd@arndb.de>
2011-04-02unicore32 ldscript fix: add cacheline parameter to PERCPU() macroGuan Xuetao
Also, adjust cacheline parameter of RW_DATA_SECTION and EXCEPTION_TABLE Signed-off-by: Guan Xuetao <gxt@mprc.pku.edu.cn> Acked-by: Arnd Bergmann <arnd@arndb.de>
2011-04-01arm: tegra: fix error check in tegra2_clocks.cNicolas Kaiser
Checking 'rate < 0' doesn't work because 'rate' is unsigned. Signed-off-by: Nicolas Kaiser <nikai@nikai.net> Signed-off-by: Colin Cross <ccross@android.com>
2011-04-01Merge branch 'release' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/aegl/linux-2.6 * 'release' of git://git.kernel.org/pub/scm/linux/kernel/git/aegl/linux-2.6: [IA64] fix build warning: argument 1 of 'irqd_irq_disabled'
2011-04-01[IA64] fix build warning: argument 1 of 'irqd_irq_disabled'Tony Luck
In commit f5e5bf088bd3d30990efb7429aaf9f1e5134ffd6 ia64: Use irqd_irq_disabled() instead of desc->status access Thomas forgot to convert from irq to *irq_data. Add a call to irq_get_irq_data() to fix that. Signed-off-by: Tony Luck <tony.luck@intel.com>
2011-04-01Merge branch 'merge' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/benh/powerpc * 'merge' of git://git.kernel.org/pub/scm/linux/kernel/git/benh/powerpc: kdump: Allow shrinking of kdump region to be overridden powerpc/pmac/smp: Remove no-longer needed preempt workaround powerpc/smp: Increase vdso_data->processorCount, not just decrease it powerpc/smp: Create idle threads on demand and properly reset them powerpc/smp: Don't expose per-cpu "cpu_state" array powerpc/pmac/smp: Fix CPU hotplug crashes on some machines powerpc/smp: Add a smp_ops->bringup_up() done callback powerpc/pmac: Rename cpu_state in therm_pm72 to avoid collision powerpc/pmac/smp: Properly NAP offlined CPU on G5 powerpc/pmac/smp: Remove HMT changes for PowerMac offline code powerpc/pmac/smp: Consolidate 32-bit and 64-bit PowerMac cpu_die in one file powerpc/pmac/smp: Fixup smp_core99_cpu_disable() and use it on 64-bit powerpc/pmac/smp: Rename fixup_irqs() to migrate_irqs() and use it on ppc32 powerpc/pmac/smp: Fix 32-bit PowerMac cpu_die powerpc/smp: Remove unused smp_ops->cpu_enable() powerpc/smp: Remove unused generic_cpu_enable() powerpc/smp: Fix generic_mach_cpu_die() powerpc/smp: soft-replugged CPUs must go back to start_secondary powerpc: Make decrementer interrupt robust against offlined CPUs
2011-04-01Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/sparc-2.6Linus Torvalds
* 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.
2011-04-01rcu: create new rcu_access_index() and use in mcePaul E. McKenney
The MCE subsystem needs to sample an RCU-protected index outside of any protection for that index. If this was a pointer, we would use rcu_access_pointer(), but there is no corresponding rcu_access_index(). This commit therefore creates an rcu_access_index() and applies it to MCE. Signed-off-by: Paul E. McKenney <paulmck@linux.vnet.ibm.com> Tested-by: Zdenek Kabelac <zkabelac@redhat.com>
2011-04-01microblaze: Fix ftraceMichal Simek
- Do not trace idle loop which takes a lot time - Fix cache handling in generic ftrace code - Do not trace lib functions ashldi3, ashrdi3, lshrdi3 Functions are called from generic ftrace code which can't be traced Signed-off-by: Michal Simek <monstr@monstr.eu>
2011-04-01microblaze: Wire up new syscallsMichal Simek
Hook up name_to_handle_at, open_by_handle_at, clock_adjtime, syncfs Signed-off-by: Michal Simek <monstr@monstr.eu>
2011-04-01microblaze: Fix level/edge irq sensibilityMichal Simek
Patches: "microblaze: Convert to new irq function names" sha (4adc192ec7d977c74c750320f289af9d61c1caca) and "microblaze: Use generic show_interrupts()" sha(9d61c18b25726306c9231428c17db42e3ff29ba7) should also setup edge/level in irq_set_chip_and_handler_name name parameter. Error log: ~ # cat /proc/interrupts CPU0 2: 2 Xilinx INTC-Xilinx INTC eth0 3: 2 Xilinx INTC-Xilinx INTC eth0 4: 241 Xilinx INTC-Xilinx INTC timer 6: 108 Xilinx INTC-Xilinx INTC serial Fixed: ~ # cat /proc/interrupts CPU0 2: 2 Xilinx INTC-level eth0 3: 2 Xilinx INTC-level eth0 4: 238 Xilinx INTC-edge timer 6: 108 Xilinx INTC-level serial Signed-off-by: Michal Simek <monstr@monstr.eu> Acked-by: Thomas Gleixner <tglx@linutronix.de> --- v2: Fix exchanged edge and level
2011-04-01powerpc/pmac/smp: Remove no-longer needed preempt workaroundBenjamin Herrenschmidt
The generic code properly re-initializes the preempt count in the idle thread now Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
2011-04-01powerpc/smp: Increase vdso_data->processorCount, not just decrease itBenjamin Herrenschmidt
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
2011-04-01powerpc/smp: Create idle threads on demand and properly reset themBenjamin Herrenschmidt
Instead of creating idle threads at boot for all possible CPUs, we create them on demand, like x86 or ARM, and we properly call init_idle to re-initialize an idle thread when a CPU was unplugged and is now re-plugged. Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
2011-04-01powerpc/smp: Don't expose per-cpu "cpu_state" arrayBenjamin Herrenschmidt
Instead, keep it static, expose an accessor and use that from the PowerMac code. Avoids easy namespace collisions and will make it easier to consolidate with other implementations. Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
2011-04-01powerpc/pmac/smp: Fix CPU hotplug crashes on some machinesBenjamin Herrenschmidt
On some machines that use i2c to synchronize the timebases (such as PowerMac7,2/7,3 G5 machines), hotplug CPU would crash when putting back a new CPU online due to the underlying i2c bus being closed. This uses the newly added bringup_done() callback to move the close along with other housekeeping calls, and adds a CPU notifier to re-open the i2c bus around subsequent hotplug operations Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
2011-04-01powerpc/smp: Add a smp_ops->bringup_up() done callbackBenjamin Herrenschmidt
This allows us to stop abusing smp_ops->setup_cpu() for cleanup tasks that have to take place after the initial boot time CPU bringup. Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
2011-04-01powerpc/pmac/smp: Properly NAP offlined CPU on G5Benjamin Herrenschmidt
The current code soft-disables, and then goes to NAP mode which turns interrupts on. That means that if an interrupt occurs, we will hit the masked interrupt code path which isn't what we want, as it will return with EE off, which will either get us out of NAP mode, or fail to enter it (according to spec). Instead, let's just rely on the fact that it is safe to take decrementer interrupts on an offline CPU and leave interrupts enabled. We can also get rid of the special case in asm for power4_cpu_offline_powersave() and just use power4_idle(). Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
2011-04-01powerpc/pmac/smp: Remove HMT changes for PowerMac offline codeBenjamin Herrenschmidt
Those instructions do nothing on non-threaded processors such as 970's used on those machines. Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
2011-04-01powerpc/pmac/smp: Consolidate 32-bit and 64-bit PowerMac cpu_die in one fileBenjamin Herrenschmidt
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
2011-04-01powerpc/pmac/smp: Fixup smp_core99_cpu_disable() and use it on 64-bitBenjamin Herrenschmidt
Use the generic code, just add the MPIC priority setting, I don't see any use in mucking around with the decrementer, as 32-bit will have EE off all along, and 64-bit will be able to deal with it. Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
2011-04-01powerpc/pmac/smp: Rename fixup_irqs() to migrate_irqs() and use it on ppc32Benjamin Herrenschmidt
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
2011-04-01powerpc/pmac/smp: Fix 32-bit PowerMac cpu_dieBenjamin Herrenschmidt
Use generic cpu_state, call idle_task_exit() properly, and remove smp_core99_cpu_die() which isn't useful, the generic function does the job just fine.
2011-04-01powerpc/smp: Remove unused smp_ops->cpu_enable()Benjamin Herrenschmidt
Remove the last remnants of cpu_enable(), everybody uses the normal __cpu_up() path now Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
2011-04-01powerpc/smp: Remove unused generic_cpu_enable()Benjamin Herrenschmidt
Nobody uses it, besides we should always use the normal __cpu_up path anyways Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
2011-04-01powerpc/smp: Fix generic_mach_cpu_die()Benjamin Herrenschmidt
This is used by some "soft" hotplug implementations. I needs to call idle_task_exit() when the CPU is going away, and we remove the now no-longer needed set_cpu_online() and local_irq_enable() which are handled by the return to start_secondary Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
2011-04-01powerpc/smp: soft-replugged CPUs must go back to start_secondaryBenjamin Herrenschmidt
Various thing are torn down when a CPU is hot-unplugged. That CPU is expected to go back to start_secondary when re-plugged to re initialize everything, such as clock sources, maps, ... Some implementations just return from cpu_die() callback in the idle loop when the CPU is "re-plugged". This is not enough. We fix it using a little asm trampoline which resets the stack and calls back into start_secondary as if we were all fresh from boot. The trampoline already existed on ppc64, but we add it for ppc32 Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
2011-04-01powerpc: Make decrementer interrupt robust against offlined CPUsBenjamin Herrenschmidt
With some implementations, it is possible that a timer interrupt occurs every few seconds on an offline CPU. In this case, just re-arm the decrementer and return immediately Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
2011-03-31msm: timer: fix missing return valueDavid Brown
Change af90f10d38 "ARM: 6759/1: smp: Select local timers vs broadcast timer support runtime" missed a return statement, causing a compile warning: arch/arm/mach-msm/timer.c:272: warning: 'return' with no value, in function returning non-void Trivially return 0 for success when running on cpu 0 (to match the comment and previous behavior). Signed-off-by: David Brown <davidb@codeaurora.org>
2011-03-31msm: Remove extraneous ffa device checkDavid Brown
The qsd8x50 board file contains a few references to machine_is_... macros that are otherwise unused, and contain no machine definition. The recent purge of unused machine definitions breaks the compilation of this target. Since the machine cannot ever be used, just remove the bogus checks. Signed-off-by: David Brown <davidb@codeaurora.org>
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