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* [PATCH] NMI: Update NMI users of RCU to use new APIPaul E. McKenney2005-09-082-4/+4
| | | | | | | | | | | | | Uses of RCU for dynamically changeable NMI handlers need to use the new rcu_dereference() and rcu_assign_pointer() facilities. This change makes it clear that these uses are safe from a memory-barrier viewpoint, but the main purpose is to document exactly what operations are being protected by RCU. This has been tested on x86 and x86-64, which are the only architectures affected by this change. Signed-off-by: <paulmck@us.ibm.com> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
* [PATCH] More __read_mostly variablesChristoph Lameter2005-09-082-2/+2
| | | | | | | | | | | | | | | Move some more frequently read variables that showed up during some of our performance tests as sometimes ending up in hot cachelines to the read_mostly section. Fix: Move the __read_mostly from before hpet_usec_quotient to follow the variable like the other uses of __read_mostly. Signed-off-by: Alok N Kataria <alokk@calsoftinc.com> Signed-off-by: Christoph Lameter <christoph@scalex86.org> Signed-off-by: Shai Fultheim <shai@scalex86.org> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
* [PATCH] detect soft lockupsIngo Molnar2005-09-084-0/+9
| | | | | | | | | | | | | | | | | | | This patch adds a new kernel debug feature: CONFIG_DETECT_SOFTLOCKUP. When enabled then per-CPU watchdog threads are started, which try to run once per second. If they get delayed for more than 10 seconds then a callback from the timer interrupt detects this condition and prints out a warning message and a stack dump (once per lockup incident). The feature is otherwise non-intrusive, it doesnt try to unlock the box in any way, it only gets the debug info out, automatically, and on all CPUs affected by the lockup. Signed-off-by: Ingo Molnar <mingo@elte.hu> Signed-off-by: Nishanth Aravamudan <nacc@us.ibm.com> Signed-Off-By: Matthias Urlichs <smurf@smurf.noris.de> Signed-off-by: Richard Purdie <rpurdie@rpsys.net> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
* [PATCH] x86_64: Fix off by one in e820_mappedEric W. Biederman2005-09-081-1/+1
| | | | | | | | | | This allows a valid iommu placed immediately after memory to work, to be recognized as after the last byte of memory and not overlapping it. Signed-off-by: Eric W. Biederman <ebiederm@xmission.com> Acked-by: Andi Kleen <ak@suse.de> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
* [PATCH] x86_64: create sysfs entries for cpu only for present cpusAshok Raj2005-09-081-2/+2
| | | | | | | | | | | Need to create sysfs only for cpus that are present. Without which we see NR_CPUS entries created when we have CONFIG_HOTPLUG and CONFIG_HOTPLUG_CPU enabled. Signed-off-by: Ashok Raj <ashok.raj@intel.com> Acked-by: Andi Kleen <ak@muc.de> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
* [PATCH] x86_64: Fix cluster mode send_IPI_allbutself to use get_cpu()/put_cpu()Ashok Raj2005-09-081-1/+5
| | | | | | | | | | Need to ensure we dont get prempted when we clear ourself from mask when using clustered mode genapic code. Signed-off-by: Ashok Raj <ashok.raj@intel.com> Acked-by: Andi Kleen <ak@muc.de> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
* [PATCH] x86_64: print processor number in show_regsZwane Mwaikambo2005-09-081-0/+1
| | | | | | | | | | | | | | Up to date I've been using the GS value to determine the processor number in dumps from show_regs, however this can be cumbersome to do if you don't have the vmlinux to verify with the address of cpu_pda, how about the following? I considered using hard_smp_processor_id for robustness but we already dereference current so we're already relying on MSR_GS_BASE being sane. Signed-off-by: Zwane Mwaikambo <zwane@arm.linux.org.uk> Acked-by: Andi Kleen <ak@muc.de> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
* [PATCH] x86/x86_64: deferred handling of writes to /proc/irqxx/smp_affinityAshok Raj2005-09-086-102/+109
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | When handling writes to /proc/irq, current code is re-programming rte entries directly. This is not recommended and could potentially cause chipset's to lockup, or cause missing interrupts. CONFIG_IRQ_BALANCE does this correctly, where it re-programs only when the interrupt is pending. The same needs to be done for /proc/irq handling as well. Otherwise user space irq balancers are really not doing the right thing. - Changed pending_irq_balance_cpumask to pending_irq_migrate_cpumask for lack of a generic name. - added move_irq out of IRQ_BALANCE, and added this same to X86_64 - Added new proc handler for write, so we can do deferred write at irq handling time. - Display of /proc/irq/XX/smp_affinity used to display CPU_MASKALL, instead it now shows only active cpu masks, or exactly what was set. - Provided a common move_irq implementation, instead of duplicating when using generic irq framework. Tested on i386/x86_64 and ia64 with CONFIG_PCI_MSI turned on and off. Tested UP builds as well. MSI testing: tbd: I have cards, need to look for a x-over cable, although I did test an earlier version of this patch. Will test in a couple days. Signed-off-by: Ashok Raj <ashok.raj@intel.com> Acked-by: Zwane Mwaikambo <zwane@holomorphy.com> Grudgingly-acked-by: Andi Kleen <ak@muc.de> Signed-off-by: Coywolf Qi Hunt <coywolf@lovecn.org> Signed-off-by: Ashok Raj <ashok.raj@intel.com> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
* [PATCH] ppc32: fix ocp_device_suspend to use pm_message_t instead of u32Eugene Surovegin2005-09-081-1/+1
| | | | | | | | | Recent "u32 -> pm_message_t" change triggered hidden bug in ocp_device_suspend. Fix it to correctly use pm_message_t instead of u32. Signed-off-by: Eugene Surovegin <ebs@ebshome.net> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
* Merge master.kernel.org:/pub/scm/linux/kernel/git/paulus/ppc64-2.6 Linus Torvalds2005-09-0626-538/+480
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| * [PATCH] remove linux/version.h include from arch/ppc64Olaf Hering2005-09-065-7/+4
| | | | | | | | | | | | | | | | | | Changing CONFIG_LOCALVERSION rebuilds too much, for no apparent reason. Use system_utsname for progress and debug header. Signed-off-by: Olaf Hering <olh@suse.de> Signed-off-by: Paul Mackerras <paulus@samba.org>
| * [PATCH] Invert sense of SLB class bitDavid Gibson2005-09-063-10/+11
| | | | | | | | | | | | | | | | | | | | | | | | | | Currently, we set the class bit in kernel SLB entries, and clear it on user SLB entries. On POWER5, ERAT entries created in real mode have the class bit clear. So to avoid flushing kernel ERAT entries on each context switch, this patch inverts our usage of the class bit, setting it on user SLB entries and clearing it on kernel SLB entries. Booted on POWER5 and G5. Signed-off-by: David Gibson <dwg@au1.ibm.com> Signed-off-by: Paul Mackerras <paulus@samba.org>
| * [PATCH] ppc64: Fix build with oprofile disabledAnton Blanchard2005-09-061-0/+26
| | | | | | | | | | | | | | Fix build with oprofile disabled. Signed-off-by: Anton Blanchard <anton@samba.org> Signed-off-by: Paul Mackerras <paulus@samba.org>
| * [PATCH] ppc64: Move oprofile_model into cpu feature structAnton Blanchard2005-09-062-37/+19
| | | | | | | | | | | | | | Move oprofile_model into cpu feature struct. Signed-off-by: Anton Blanchard <anton@samba.org> Signed-off-by: Paul Mackerras <paulus@samba.org>
| * [PATCH] ppc64: Move oprofile_impl.h into include/asm-ppc64Anton Blanchard2005-09-064-116/+3
| | | | | | | | | | | | | | | | Move oprofile_impl.h into include/asm-ppc64 in preparation for moving oprofile_model into cpu feature struct. Signed-off-by: Anton Blanchard <anton@samba.org> Signed-off-by: Paul Mackerras <paulus@samba.org>
| * [PATCH] ppc64: Add oprofile cpu_type to cpu feature structAnton Blanchard2005-09-062-5/+14
| | | | | | | | | | | | | | Add oprofile cpu_type to cpu feature struct. Signed-off-by: Anton Blanchard <anton@samba.org> Signed-off-by: Paul Mackerras <paulus@samba.org>
| * [PATCH] ppc64: Use num_pmcs in oprofile codeAnton Blanchard2005-09-062-11/+5
| | | | | | | | | | | | | | Change oprofile to use num_pmcs from the cpu feature struct. Signed-off-by: Anton Blanchard <anton@samba.org> Signed-off-by: Paul Mackerras <paulus@samba.org>
| * [PATCH] ppc64: remove CPU_FTR_PMC8Anton Blanchard2005-09-061-13/+11
| | | | | | | | | | | | | | | | Remove the CPU_FTR_PMC8 feature now we encode the number of PMCs directly. Signed-off-by: Anton Blanchard <anton@samba.org> Signed-off-by: Paul Mackerras <paulus@samba.org>
| * [PATCH] ppc64: add number of PMCs to cputableAnton Blanchard2005-09-062-19/+42
| | | | | | | | | | | | | | Add a field in the cputable struct to store the number of PMCs. Signed-off-by: Anton Blanchard <anton@samba.org> Signed-off-by: Paul Mackerras <paulus@samba.org>
| * [PATCH] ppc64: Allow world readable /proc/ppc64/lparcfgWim Coekaerts2005-09-061-1/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | I would like to be able to read the lparcfg data from any user so we can make "intelligent" decisions based on underlying attributes when running in lpars. Yes there's software that likes to do this :) and runs as non-root. It's very similar to say VM where you can get CP to provide feedback of the real hardware inside a VM guest. Signed-off-by: Wim Coekaerts <wim.coekaerts@oracle.com> Signed-off-by: Paul Mackerras <paulus@samba.org>
| * [PATCH] ppc64: remove use of asm/segment.hKumar Gala2005-09-061-1/+0
| | | | | | | | | | | | | | Removed PPC64 architecture specific users of asm/segment.h. Signed-off-by: Kumar Gala <kumar.gala@freescale.com> Signed-off-by: Paul Mackerras <paulus@samba.org>
| * [PATCH] ppc64: poison initmemAnton Blanchard2005-09-061-0/+1
| | | | | | | | | | | | | | Poison initmem after we free it so we catch use after free issues. Signed-off-by: Anton Blanchard <anton@samba.org> Signed-off-by: Paul Mackerras <paulus@samba.org>
| * [PATCH] ppc64: systemcfg is now a pointerJimi Xenidis2005-09-061-3/+6
| | | | | | | | | | | | | | | | | | | | | | | | The following patch fixes 2 issues: 1) use PLATFORM_LPAR bit to test if running in LPAR mode 2) systemcfg pointer is assigned from static data in arch/ppc64/kernel/pacaData.c. The file arch/ppc64/kernel/head.S now refers to is using the GOT binding to the pointer and hence must deref it. Signed-off-by: Jimi Xenidis <jimix@watson.ibm.com> Signed-off-by: Paul Mackerras <paulus@samba.org>
| * [PATCH] ppc64: Consolidate early console and PPCDBG codeMilton Miller2005-09-062-36/+47
| | | | | | | | | | | | | | | | Consolidate the early console and PPCDBG code in udbg.c Signed-off-by: Milton Miller <miltonm@bga.com> Signed-off-by: Anton Blanchard <anton@samba.org> Signed-off-by: Paul Mackerras <paulus@samba.org>
| * [PATCH] ppc64: Remove old includesMilton Miller2005-09-063-13/+3
| | | | | | | | | | | | | | | | Trim some no longer needed includes from udbg.c and friends. Signed-off-by: Milton Miller <miltonm@bga.com> Signed-off-by: Anton Blanchard <anton@samba.org> Signed-off-by: Paul Mackerras <paulus@samba.org>
| * [PATCH] ppc64: Take udbg out of ppc_mdMilton Miller2005-09-067-42/+37
| | | | | | | | | | | | | | | | | | Take udbg out of ppc_md. Allows us to not overwrite early udbg inits when assigning ppc_md. Signed-off-by: Milton Miller <miltonm@bga.com> Signed-off-by: Anton Blanchard <anton@samba.org> Signed-off-by: Paul Mackerras <paulus@samba.org>
| * [PATCH] ppc64: Split SCC and 15550 udbg codeMilton Miller2005-09-064-227/+272
| | | | | | | | | | | | | | | | | | Split scc and 15550 functions from udbg each into their own file. This makes them more symetric with the lpar and btext code. Signed-off-by: Milton Miller <miltonm@bga.com> Signed-off-by: Anton Blanchard <anton@samba.org> Signed-off-by: Paul Mackerras <paulus@samba.org>
| * [PATCH] ppc64: Make udbg_init_uart set the ppc_md udbg methods.Milton Miller2005-09-063-6/+3
| | | | | | | | | | | | | | | | make udbg_init_uart set the ppc_md udbg methods. Signed-off-by: Milton Miller <miltonm@bga.com> Signed-off-by: Anton Blanchard <anton@samba.org> Signed-off-by: Paul Mackerras <paulus@samba.org>
| * [PATCH] ppc64: Clean up CR handlingMilton Miller2005-09-061-12/+4
| | | | | | | | | | | | | | | | | | | | | | | | | | Make the 16550 and real mode 16550 use tail recursion like the scc code instead of repeating the routine except for the character sent. Gcc recoginizes the tail recursion and handles it efficently without stack allocations. The maple real putc shrinks from 188 to 104 bytes of instructions. udbg_putc drops from 188 to 140 bytes. Signed-off-by: Milton Miller <miltonm@bga.com> Signed-off-by: Anton Blanchard <anton@samba.org> Signed-off-by: Paul Mackerras <paulus@samba.org>
| * [PATCH] ppc64: Remove dummy getc routinesMilton Miller2005-09-061-12/+2
| | | | | | | | | | | | | | | | Now that xmon is fixed we should not need the dummy getc routines. Signed-off-by: Milton Miller <miltonm@bga.com> Signed-off-by: Anton Blanchard <anton@samba.org> Signed-off-by: Paul Mackerras <paulus@samba.org>
| * [PATCH] ppc64: dont bypass ppc_md.udbg* functionsMilton Miller2005-09-061-1/+3
| | | | | | | | | | | | | | | | udbg_getc_poll is a ppc_md function. don't call directly into udbg.c Signed-off-by: Milton Miller <miltonm@bga.com> Signed-off-by: Anton Blanchard <anton@samba.org> Signed-off-by: Paul Mackerras <paulus@samba.org>
* | Merge master.kernel.org:/home/rmk/linux-2.6-arm Linus Torvalds2005-09-064-20/+40
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| * | [ARM] 2882/1: pxa2xx_sharpsl: Update PCMCIA driver to support variety of new ↵Richard Purdie2005-09-053-0/+30
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | hardware Patch from Richard Purdie This patch updates the PCMCIA pxa2xx_sharpsl driver to support multiple scoop devices by adding a scoop to pcmcia slot mapping structure. It adds platform support for poodle, is known to work on spitz (which is dual slot) and should also support collie with a minor amount of further work. Signed-off-by: Richard Purdie <rpurdie@rpsys.net> Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
| * | [ARM] 2876/1: N30 - remove task to toggle USB D+ lineBen Dooks2005-09-051-20/+10
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Patch from Ben Dooks The n30 machine file is using a kernel thread to change the state of the USB D+ pull-up resistor, which is not the proper way to do this. Once the usb-gadget support for the 24xx is merge, the proper access method will be added. This patch also removes the problem of using HZ for the msleep calls, from Nishanth Aravamudan. Signed-off-by: Ben Dooks <ben-linux@fluff.org> Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
* | | Merge master.kernel.org:/pub/scm/linux/kernel/git/sam/kbuild Linus Torvalds2005-09-062-2/+2
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| * | | kbuild: drop descend - converting existing usersSam Ravnborg2005-07-252-2/+2
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | There was only two users left of descend. Fix them so they use $(clean)= and $(build)=. Drop definition of descend. Signed-off-by: Sam Ravnborg <sam@ravnborg.org> ---
* | | | [SPARC64]: Don't include drivers/firmware/KconfigDavid S. Miller2005-09-061-2/+0
| |_|/ |/| | | | | | | | | | | | | | | | | It's really not relevant for this platform in any way, after all. Signed-off-by: David S. Miller <davem@davemloft.net>
* | | Merge master.kernel.org:/home/rmk/linux-2.6-arm Linus Torvalds2005-09-0527-84/+86
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| * | [ARM] Wrap calls to descriptor handlersRussell King2005-09-0423-41/+41
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | This is part of Thomas Gleixner's generic IRQ patch, which converts ARM to use the generic IRQ subsystem. Here, we wrap calls to desc->handler() in an inline function, desc_handle_irq(). This reduces the size of Thomas' patch since the changes become more localised. Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
| * | [ARM] Change irq_chip wake/type methods to set_wake/set_typeRussell King2005-09-047-29/+29
| | | | | | | | | | | | | | | | | | | | | | | | This is part of Thomas Gleixner's generic IRQ patch, which converts ARM to use the generic IRQ subsystem. Here, we rename two of the irq_chip methods - wake becomes set_wake, and type becomes set_type. Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
| * | [ARM] Fix compilation in locomo.cPavel Machek2005-09-041-7/+7
| | | | | | | | | | | | | | | | | | | | | | | | Do not access children in struct device directly, use device_for_each_child helper instead. It fixes compilation. Signed-off-by: Pavel Machek <pavel@suse.cz> Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
| * | [ARM] Stack starts at THREAD_START_SP offset, not THREAD_SIZE-8Russell King2005-09-041-1/+1
| | | | | | | | | | | | | | | | | | Use the correct constants. Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
| * | [ARM] 2875/1: Data Abort fixesTimothy Baldwin2005-09-041-4/+4
| | | | | | | | | | | | | | | | | | | | | | | | | | | Patch from Timothy Baldwin All data aborts are treated as read accesses. The existing code updates the wrong bit of r1, also the comments are wrong in that the sense of the L bit is inverted. Signed-off-by: Timothy E. Baldwin <T.E.Baldwin99@members.leeds.ac.uk> Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
| * | [ARM] 2874/1: S3C2410 - add cpu_init() call after sleep wakeupBen Dooks2005-09-031-2/+4
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Patch from Ben Dooks The power management sleep code needs to call cpu_init() to restore the cpu state after the system resumes from suspend. Also clear off an un-necessary comment. Thanks to Dimitry Andric for reporting the bug and for rmk for pointing out the cause. Signed-off-by: Ben Dooks <ben-linux@fluff.org> Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
* | | Merge master.kernel.org:/pub/scm/linux/kernel/git/davem/sparc-2.6 Linus Torvalds2005-09-0513-604/+285
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| * | | [SPARC]: Kill io_remap_page_range()David S. Miller2005-09-025-94/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | | | It's been deprecated long enough and there are no in-tree users any longer. Signed-off-by: David S. Miller <davem@davemloft.net>
| * | | [SPARC64]: Use 'unsigned long' for port argument to I/O string ops.David S. Miller2005-09-011-33/+44
| | | | | | | | | | | | | | | | | | | | | | | | | | | | This kills warnings when building drivers/ide/ide-iops.c and puts us in-line with what other platforms do here. Signed-off-by: David S. Miller <davem@davemloft.net>
| * | | [SPARC64]: Use drivers/KconfigDavid S. Miller2005-08-311-308/+20
| | | | | | | | | | | | | | | | | | | | | | | | And move some other stuff into drivers/sbus/char/Kconfig. Signed-off-by: David S. Miller <davem@davemloft.net>
| * | | [SPARC64]: Preserve nucleus ctx page size during TLB flushes.David S. Miller2005-08-311-14/+25
| | | | | | | | | | | | | | | | Signed-off-by: David S. Miller <davem@davemloft.net>
| * | | [SPARC64]: Do not expand CHEETAH_LOG_ERROR 3 times.David S. Miller2005-08-311-136/+173
| | | | | | | | | | | | | | | | | | | | | | | | | | | | We only need to expand this thing once, saving some text section space. Signed-off-by: David S. Miller <davem@davemloft.net>
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