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* define new percpu interface for shared dataFenghua Yu2007-07-19
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | per cpu data section contains two types of data. One set which is exclusively accessed by the local cpu and the other set which is per cpu, but also shared by remote cpus. In the current kernel, these two sets are not clearely separated out. This can potentially cause the same data cacheline shared between the two sets of data, which will result in unnecessary bouncing of the cacheline between cpus. One way to fix the problem is to cacheline align the remotely accessed per cpu data, both at the beginning and at the end. Because of the padding at both ends, this will likely cause some memory wastage and also the interface to achieve this is not clean. This patch: Moves the remotely accessed per cpu data (which is currently marked as ____cacheline_aligned_in_smp) into a different section, where all the data elements are cacheline aligned. And as such, this differentiates the local only data and remotely accessed data cleanly. Signed-off-by: Fenghua Yu <fenghua.yu@intel.com> Acked-by: Suresh Siddha <suresh.b.siddha@intel.com> Cc: Rusty Russell <rusty@rustcorp.com.au> Cc: Christoph Lameter <clameter@sgi.com> Cc: <linux-arch@vger.kernel.org> Cc: "Luck, Tony" <tony.luck@intel.com> Cc: Andi Kleen <ak@suse.de> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* mm: fault feedback #2Nick Piggin2007-07-19
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | This patch completes Linus's wish that the fault return codes be made into bit flags, which I agree makes everything nicer. This requires requires all handle_mm_fault callers to be modified (possibly the modifications should go further and do things like fault accounting in handle_mm_fault -- however that would be for another patch). [akpm@linux-foundation.org: fix alpha build] [akpm@linux-foundation.org: fix s390 build] [akpm@linux-foundation.org: fix sparc build] [akpm@linux-foundation.org: fix sparc64 build] [akpm@linux-foundation.org: fix ia64 build] Signed-off-by: Nick Piggin <npiggin@suse.de> Cc: Richard Henderson <rth@twiddle.net> Cc: Ivan Kokshaysky <ink@jurassic.park.msu.ru> Cc: Russell King <rmk@arm.linux.org.uk> Cc: Ian Molton <spyro@f2s.com> Cc: Bryan Wu <bryan.wu@analog.com> 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: Hirokazu Takata <takata@linux-m32r.org> Cc: Geert Uytterhoeven <geert@linux-m68k.org> Cc: Roman Zippel <zippel@linux-m68k.org> Cc: Greg Ungerer <gerg@uclinux.org> Cc: Matthew Wilcox <willy@debian.org> Cc: Paul Mackerras <paulus@samba.org> Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org> Cc: Heiko Carstens <heiko.carstens@de.ibm.com> Cc: Martin Schwidefsky <schwidefsky@de.ibm.com> Cc: Paul Mundt <lethal@linux-sh.org> Cc: Kazumoto Kojima <kkojima@rr.iij4u.or.jp> Cc: Richard Curnow <rc@rc0.org.uk> Cc: William Lee Irwin III <wli@holomorphy.com> Cc: "David S. Miller" <davem@davemloft.net> Cc: Jeff Dike <jdike@addtoit.com> Cc: Paolo 'Blaisorblade' Giarrusso <blaisorblade@yahoo.it> Cc: Miles Bader <uclinux-v850@lsi.nec.co.jp> Cc: Chris Zankel <chris@zankel.net> Acked-by: Kyle McMartin <kyle@mcmartin.ca> Acked-by: Haavard Skinnemoen <hskinnemoen@atmel.com> Acked-by: Ralf Baechle <ralf@linux-mips.org> Acked-by: Andi Kleen <ak@muc.de> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> [ Still apparently needs some ARM and PPC loving - Linus ] Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* kallsyms: make KSYM_NAME_LEN include space for trailing '\0'Tejun Heo2007-07-17
| | | | | | | | | | | | | | | | | | | | | | | | KSYM_NAME_LEN is peculiar in that it does not include the space for the trailing '\0', forcing all users to use KSYM_NAME_LEN + 1 when allocating buffer. This is nonsense and error-prone. Moreover, when the caller forgets that it's very likely to subtly bite back by corrupting the stack because the last position of the buffer is always cleared to zero. This patch increments KSYM_NAME_LEN by one and updates code accordingly. * off-by-one bug in asm-powerpc/kprobes.h::kprobe_lookup_name() macro is fixed. * Where MODULE_NAME_LEN and KSYM_NAME_LEN were used together, MODULE_NAME_LEN was treated as if it didn't include space for the trailing '\0'. Fix it. Signed-off-by: Tejun Heo <htejun@gmail.com> Acked-by: Paulo Marques <pmarques@grupopie.com> Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org> Cc: Paul Mackerras <paulus@samba.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* PTRACE_PEEKDATA consolidationAlexey Dobriyan2007-07-17
| | | | | | | | | | | Identical implementations of PTRACE_PEEKDATA go into generic_ptrace_peekdata() function. Signed-off-by: Alexey Dobriyan <adobriyan@gmail.com> Cc: Christoph Hellwig <hch@lst.de> Cc: <linux-arch@vger.kernel.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* Report that kernel is tainted if there was an OOPSPavel Emelianov2007-07-17
| | | | | | | | | | | | | | If the kernel OOPSed or BUGed then it probably should be considered as tainted. Thus, all subsequent OOPSes and SysRq dumps will report the tainted kernel. This saves a lot of time explaining oddities in the calltraces. Signed-off-by: Pavel Emelianov <xemul@openvz.org> Acked-by: Randy Dunlap <randy.dunlap@oracle.com> Cc: <linux-arch@vger.kernel.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> [ Added parisc patch from Matthew Wilson -Linus ] Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* generic bug: use show_regs() instead of dump_stack()Heiko Carstens2007-07-16
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | The current generic bug implementation has a call to dump_stack() in case a WARN_ON(whatever) gets hit. Since report_bug(), which calls dump_stack(), gets called from an exception handler we can do better: just pass the pt_regs structure to report_bug() and pass it to show_regs() in case of a warning. This will give more debug informations like register contents, etc... In addition this avoids some pointless lines that dump_stack() emits, since it includes a stack backtrace of the exception handler which is of no interest in case of a warning. E.g. on s390 the following lines are currently always present in a stack backtrace if dump_stack() gets called from report_bug(): [<000000000001517a>] show_trace+0x92/0xe8) [<0000000000015270>] show_stack+0xa0/0xd0 [<00000000000152ce>] dump_stack+0x2e/0x3c [<0000000000195450>] report_bug+0x98/0xf8 [<0000000000016cc8>] illegal_op+0x1fc/0x21c [<00000000000227d6>] sysc_return+0x0/0x10 Acked-by: Jeremy Fitzhardinge <jeremy@goop.org> Acked-by: Haavard Skinnemoen <hskinnemoen@atmel.com> Cc: Andi Kleen <ak@suse.de> Cc: Kyle McMartin <kyle@parisc-linux.org> Cc: Paul Mackerras <paulus@samba.org> Cc: Paul Mundt <lethal@linux-sh.org> Cc: Martin Schwidefsky <schwidefsky@de.ibm.com> Signed-off-by: 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>
* [PARISC] unwinder improvementsRandolph Chung2007-06-21
| | | | | | | | | Add special-case handling for "handle_interruption" so that we can rewind past the interruption. This is useful for seeing what caused a BUG() or WARN_ON(); otherwise the unwind stops at the interruption. Signed-off-by: Randolph Chung <tausq@debian.org> Signed-off-by: Kyle McMartin <kyle@parisc-linux.org>
* [PARISC] Fix unwinder on 64-bit kernelsRandolph Chung2007-06-21
| | | | | | | | The unwinder was broken by the shift of PAGE_OFFSET in order to increase the size of the vmalloc area on 64-bit kernels. Signed-off-by: Randolph Chung <tausq@debian.org> Signed-off-by: Kyle McMartin <kyle@parisc-linux.org>
* [PARISC] remove global_ack_eiemGrant Grundler2007-06-12
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Kudos to Thibaut Varene for spotting the (mis)use of appropriately named global_ack_eiem. This took a long time to figure out and both insight from myself, Kyle McMartin, and James Bottomley were required to narrow down which bit of code could have this race condition. The symptom was interrupts stopped getting delivered while some workload was generating IO interrupts on two different CPUs. One of the interrupt sources would get masked off and stay unmasked. Problem was global_ack_eiem was accessed with read/modified/write sequence and not protected by a spinlock. PA-RISC doesn't need a global ack flag though. External Interrupts are _always_ delivered to a single CPU (except for "global broadcast interrupt" which AFAIK currently is not used.) So we don't have to worry about any given IRQ vector getting delivered to more than one CPU. Tested on a500 and rp34xx boxen. rsync to/from gsyprf11 (a500) would lock up the box since NIC (tg3) interrupt and SCSI (sym2) were on "opposite" CPUs (2 CPU system). Put them on the same CPU or apply this patch and 10GB of data would rsync completely. Please apply the following critical patch. thanks, grant Signed-off-by: Grant Grundler <grundler@parisc-linux.org> Acked-by: Thibaut VARENE <T-Bone@parisc-linux.org> Signed-off-by: Kyle McMartin <kyle@parisc-linux.org>
* [PARISC] Fix kernel panic in check_ivtKyle McMartin2007-06-04
| | | | | | | | | | check_ivt had some seriously broken code wrt function pointers on parisc64. Instead of referencing the hpmc code via a function pointer, export symbols and reference it as a const array. Thanks to jda for pointing out the broken 64-bit func ptr handling. Signed-off-by: Kyle McMartin <kyle@parisc-linux.org>
* [PARISC] Fix bug when syscall nr is __NR_Linux_syscallsKyle McMartin2007-06-03
| | | | | | | | | | | | The bug was that we were comparing __NR_syscalls to be greater or equal to the syscall number stored in %r20. __NR_syscalls is one greater than the last syscall though, so we're loading one entry beyond the end of the syscall table, and trying to jump to it. Fix this by only checking that we're greater, alternatively, we could have compared to (__NR_Linux_syscalls - 1) Signed-off-by: Kyle McMartin <kyle@parisc-linux.org>
* [PARISC] be more defensive in process.c::get_wchanKyle McMartin2007-05-30
| | | | | | | While debugging, I noticed we don't check the task_struct arg passed to get_wchan, whereas everyone else does. Signed-off-by: Kyle McMartin <kyle@parisc-linux.org>
* [PARISC] fix "reduce size of task_struct on 64-bit machines" falloutKyle McMartin2007-05-30
| | | | | | | Amazingly, parisc was the only arch effected by this... Convert register-sized loads/stores to always be 32-bit for these fields. Signed-off-by: Kyle McMartin <kyle@parisc-linux.org>
* [PARISC] fix null ptr deref in unwind.cKyle McMartin2007-05-30
| | | | | | | | commit ffb45122766db220d0bf3d01848d575fbbcb6430 removed one too many args. kallsyms_lookup is not safe to call with a NULL *modname. Paper bag over the problem for the time being. Signed-off-by: Kyle McMartin <kyle@parisc-linux.org>
* [PARISC] remove remnants of parisc-specific softirq codeGrant Grundler2007-05-30
| | | | | | | | | | | | | | Kyle, This patch removes remnants of softirq support that we no longer need. I suspect this was just overlooked when willy convert parisc to generic IRQ support. Tested on c3600 32-bit UP. Signed-off-by: Grant Grundler <grundler@parisc-linux.org> [and tested on a c8000 64-bit SMP --kyle] Signed-off-by: Kyle McMartin <kyle@parisc-linux.org>
* [PARISC] fix section mismatch in smp.cHelge Deller2007-05-30
| | | | | | | WARNING: arch/parisc/kernel/built-in.o(.text.__cpu_up+0x20): Section mismatch: reference to .init.text:smp_boot_one_cpu (after '__cpu_up') Signed-off-by: Helge Deller <deller@gmx.de> Signed-off-by: Kyle McMartin <kyle@parisc-linux.org>
* [PARISC] Wire up utimensat/signalfd/timerfd/eventfd syscallsHelge Deller2007-05-27
| | | | | | | | Wire up utimensat/signalfd/timerfd/eventfd syscalls and mark select/fadvise64/utimes to be ignored by checksyscalls.sh Signed-off-by: Helge Deller <deller@gmx.de> Signed-off-by: Kyle McMartin <kyle@parisc-linux.org>
* [PARISC] fix section mismatches in arch/parisc/kernelHelge Deller2007-05-27
| | | | | | | | | | | | | | | Hi Kyle, this patch fixes two section mismatches in arch/parisc/kernel: WARNING: arch/parisc/kernel/built-in.o(.data.read_mostly+0xd8): Section mismatch: reference to .init.text:processor_probe (between 'cpu_driver' and 'boot_cpu_data') WARNING: arch/parisc/kernel/built-in.o(.text.alloc_pa_dev+0x140): Section mismatch: reference to .init.text:parisc_hardware_description (after 'alloc_pa_dev') Additionally, mark some tables as constants. Please apply, Helge Signed-off-by: Helge Deller <deller@gmx.de> Signed-off-by: Kyle McMartin <kyle@parisc-linux.org>
* [PARISC] ROUND_UP macro cleanup in arch/pariscMilind Arun Choudhary2007-05-22
| | | | | | | ROUND_UP macro cleanup, use ALIGN where ever appropriate Signed-off-by: Milind Arun Choudhary <milindchoudhary@gmail.com> Signed-off-by: Kyle McMartin <kyle@parisc-linux.org>
* [PARISC] spelling fixes: arch/parisc/Simon Arlott2007-05-22
| | | | | | | | Spelling fixes in arch/parisc/. Signed-off-by: Simon Arlott <simon@fire.lp0.eu> Acked-by: Grant Grundler <grundler@parisc-linux.org> Signed-off-by: Kyle McMartin <kyle@parisc-linux.org>
* [PARISC] Disable LWS debuggingAurelien Jarno2007-05-22
| | | | | | | | | The LWS debugging code on parisc is wrongly enabled due to a bug in the use of the preprocessor directives. This debugging code is not thread safe and causes problems with a recent glibc on SMP kernels. Signed-off-by: Aurelien Jarno <aurelien@aurel32.net> Signed-off-by: Kyle McMartin <kyle@parisc-linux.org>
* [PARISC] Let PA-8900 processors bootKyle McMartin2007-05-22
| | | | Signed-off-by: Kyle McMartin <kyle@parisc-linux.org>
* parisc: convert /proc/gsc/pcxl_dma to seq_fileAlexey Dobriyan2007-05-22
| | | | | | | | | | | | | | As side effect, remove one more ->get_info user and a novel approach of content generation: sprintf(buf, "%sfoo", buf, ...); sprintf(buf, "%sbar", buf, ...); ... Compile-tested. Signed-off-by: Alexey Dobriyan <adobriyan@gmail.com> Signed-off-by: Kyle McMartin <kyle@parisc-linux.org>
* [PARISC] Wire up kexec_load syscallKyle McMartin2007-05-22
| | | | | | | Definitely unimplemented at this point and will just trap to sys_ni_syscall... Signed-off-by: Kyle McMartin <kyle@parisc-linux.org>
* [PARISC] Move #undef to end of syscall tableKyle McMartin2007-05-22
| | | | Signed-off-by: Kyle McMartin <kyle@parisc-linux.org>
* parisc: sync compat getdentsAlexandr Andreev2007-05-22
| | | | | | | | | | | | | Add VERIFY_WRITE check in the beginning like compat_sys_getdents() EFAULT on parisc if put_user() fails. Signed-off-by: Alexandr Andreev <aandreev@openvz.org> Signed-off-by: Alexey Dobriyan <adobriyan@openvz.org> Cc: Kyle McMartin <kyle@mcmartin.ca> Cc: Matthew Wilcox <willy@debian.org> Cc: Grant Grundler <grundler@google.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Kyle McMartin <kyle@parisc-linux.org>
* parisc: make command_line[] staticAlexey Dobriyan2007-05-22
| | | | | | Signed-off-by: Alexey Dobriyan <adobriyan@gmail.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Kyle McMartin <kyle@parisc-linux.org>
* Merge git://git.kernel.org/pub/scm/linux/kernel/git/sam/kbuild-fixLinus Torvalds2007-05-21
|\ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | * git://git.kernel.org/pub/scm/linux/kernel/git/sam/kbuild-fix: mm/slab: fix section mismatch warning mm: fix section mismatch warnings init/main: use __init_refok to fix section mismatch kbuild: introduce __init_refok/__initdata_refok to supress section mismatch warnings all-archs: consolidate .data section definition in asm-generic all-archs: consolidate .text section definition in asm-generic kbuild: add "Section mismatch" warning whitelist for powerpc kbuild: make better section mismatch reports on i386, arm and mips kbuild: make modpost section warnings clearer kconfig: search harder for curses library in check-lxdialog.sh kbuild: include limits.h in sumversion.c for PATH_MAX powerpc: Fix the MODALIAS generation in modpost for of devices
| * all-archs: consolidate .data section definition in asm-genericSam Ravnborg2007-05-19
| | | | | | | | | | | | | | With this consolidation we can now modify the .data section definition in one spot for all archs. Signed-off-by: Sam Ravnborg <sam@ravnborg.org>
| * all-archs: consolidate .text section definition in asm-genericSam Ravnborg2007-05-19
| | | | | | | | | | | | Move definition of .text section to asm-generic. Signed-off-by: Sam Ravnborg <sam@ravnborg.org>
* | Detach sched.h from mm.hAlexey Dobriyan2007-05-21
|/ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | First thing mm.h does is including sched.h solely for can_do_mlock() inline function which has "current" dereference inside. By dealing with can_do_mlock() mm.h can be detached from sched.h which is good. See below, why. This patch a) removes unconditional inclusion of sched.h from mm.h b) makes can_do_mlock() normal function in mm/mlock.c c) exports can_do_mlock() to not break compilation d) adds sched.h inclusions back to files that were getting it indirectly. e) adds less bloated headers to some files (asm/signal.h, jiffies.h) that were getting them indirectly Net result is: a) mm.h users would get less code to open, read, preprocess, parse, ... if they don't need sched.h b) sched.h stops being dependency for significant number of files: on x86_64 allmodconfig touching sched.h results in recompile of 4083 files, after patch it's only 3744 (-8.3%). Cross-compile tested on all arm defconfigs, all mips defconfigs, all powerpc defconfigs, alpha alpha-up arm i386 i386-up i386-defconfig i386-allnoconfig ia64 ia64-up m68k mips parisc parisc-up powerpc powerpc-up s390 s390-up sparc sparc-up sparc64 sparc64-up um-x86_64 x86_64 x86_64-up x86_64-defconfig x86_64-allnoconfig as well as my two usual configs. Signed-off-by: Alexey Dobriyan <adobriyan@gmail.com> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* rename thread_info to stackRoman Zippel2007-05-09
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | This finally renames the thread_info field in task structure to stack, so that the assumptions about this field are gone and archs have more freedom about placing the thread_info structure. Nonbroken archs which have a proper thread pointer can do the access to both current thread and task structure via a single pointer. It'll allow for a few more cleanups of the fork code, from which e.g. ia64 could benefit. Signed-off-by: Roman Zippel <zippel@linux-m68k.org> [akpm@linux-foundation.org: build fix] Cc: Richard Henderson <rth@twiddle.net> Cc: Ivan Kokshaysky <ink@jurassic.park.msu.ru> Cc: Russell King <rmk@arm.linux.org.uk> Cc: Ian Molton <spyro@f2s.com> Cc: Haavard Skinnemoen <hskinnemoen@atmel.com> 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: Hirokazu Takata <takata@linux-m32r.org> Cc: Geert Uytterhoeven <geert@linux-m68k.org> Cc: Roman Zippel <zippel@linux-m68k.org> Cc: Greg Ungerer <gerg@uclinux.org> Cc: Ralf Baechle <ralf@linux-mips.org> Cc: Ralf Baechle <ralf@linux-mips.org> Cc: Paul Mackerras <paulus@samba.org> Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org> Cc: Heiko Carstens <heiko.carstens@de.ibm.com> Cc: Martin Schwidefsky <schwidefsky@de.ibm.com> Cc: Paul Mundt <lethal@linux-sh.org> Cc: Kazumoto Kojima <kkojima@rr.iij4u.or.jp> Cc: Richard Curnow <rc@rc0.org.uk> Cc: William Lee Irwin III <wli@holomorphy.com> Cc: "David S. Miller" <davem@davemloft.net> Cc: Jeff Dike <jdike@addtoit.com> Cc: Paolo 'Blaisorblade' Giarrusso <blaisorblade@yahoo.it> Cc: Miles Bader <uclinux-v850@lsi.nec.co.jp> Cc: Andi Kleen <ak@muc.de> Cc: Chris Zankel <chris@zankel.net> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* Add IRQF_IRQPOLL flag on pariscBernhard Walle2007-05-08
| | | | | | | | | | | Add IRQF_IRQPOLL to the timer interrupt on parisc. Signed-off-by: Bernhard Walle <bwalle@suse.de> Cc: Kyle McMartin <kyle@mcmartin.ca> Cc: Matthew Wilcox <willy@debian.org> Cc: Grant Grundler <grundler@google.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* Simplify kallsyms_lookup()Alexey Dobriyan2007-05-08
| | | | | | | | | | | | | | Several kallsyms_lookup() pass dummy arguments but only need, say, module's name. Make kallsyms_lookup() accept NULLs where possible. Also, makes picture clearer about what interfaces are needed for all symbol resolving business. Signed-off-by: Alexey Dobriyan <adobriyan@sw.ru> Cc: Rusty Russell <rusty@rustcorp.com.au> Acked-by: Ingo Molnar <mingo@elte.hu> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* header cleaning: don't include smp_lock.h when not usedRandy Dunlap2007-05-08
| | | | | | | | | | | | Remove includes of <linux/smp_lock.h> where it is not used/needed. Suggested by Al Viro. Builds cleanly on x86_64, i386, alpha, ia64, powerpc, sparc, sparc64, and arm (all 59 defconfigs). Signed-off-by: Randy Dunlap <randy.dunlap@oracle.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* get_unmapped_area handles MAP_FIXED on pariscBenjamin Herrenschmidt2007-05-07
| | | | | | | | | | | | | | Handle MAP_FIXED in parisc arch_get_unmapped_area(), just return the address. We might want to also check for possible cache aliasing issues now that we get called in that case (like ARM or MIPS), leave a comment for the maintainers to pick up. Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org> Cc: Kyle McMartin <kyle@mcmartin.ca> Cc: Grant Grundler <grundler@parisc-linux.org> Cc: Matthew Wilcox <willy@debian.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* [PATCH] x86: Allow percpu variables to be page-alignedJeremy Fitzhardinge2007-05-02
| | | | | | | | | | | | | | | Let's allow page-alignment in general for per-cpu data (wanted by Xen, and Ingo suggested KVM as well). Because larger alignments can use more room, we increase the max per-cpu memory to 64k rather than 32k: it's getting a little tight. Signed-off-by: Rusty Russell <rusty@rustcorp.com.au> Signed-off-by: Jeremy Fitzhardinge <jeremy@xensource.com> Signed-off-by: Andi Kleen <ak@suse.de> Acked-by: Ingo Molnar <mingo@elte.hu> Cc: Andi Kleen <ak@suse.de> Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
* libata/IDE: remove combined mode quirkJeff Garzik2007-04-28
| | | | | | | | | | | | | | | | | | | | | Both old-IDE and libata should be able handle all controllers and devices found using normal resource reservation methods. This eliminates the awful, low-performing split-driver configuration where old-IDE drove the PATA portion of a PCI device, in PIO-only mode, and libata drove the SATA portion of the /same/ PCI device, in DMA mode. Typically vendors would ship SATA hard drive / PATA optical configuration, which would lend itself to slow (PIO-only) CD-ROM performance. For Intel users running in combined mode, it is now wholly dependent on your driver choice (potentially link order, if you compile both drivers in) whether old-IDE or libata will drive your hardware. In either case, you will get full performance from both SATA and PATA ports now, without having to pass a kernel command line parameter. Signed-off-by: Jeff Garzik <jeff@garzik.org>
* [PARISC] clocksource: Move update_cr16_clocksource later in bootKyle McMartin2007-02-26
| | | | | | | | | | | smp_cpus_done is too early for us... before we even do a device inventory! Move update_cr16_clocksource into the tail end of processor_probe() and stub it out on CONFIG_SMP=n builds. Verified that clocksource0 is properly updated to use jiffies on an SMP build. Signed-off-by: Kyle McMartin <kyle@parisc-linux.org>
* [PARISC] time: clocksource lost update_callbackKyle McMartin2007-02-26
| | | | | | | | So move the code to be called by smp_cpus_done, which is after we've figured out if there's more than one cpu actually present. Signed-off-by: Kyle McMartin <kyle@parisc-linux.org>
* [PARISC] time: Convert clocksource is_continuous to flagKyle McMartin2007-02-26
| | | | Signed-off-by: Kyle McMartin <kyle@parisc-linux.org>
* [PARISC] clocksource_cr16: Use clocksource_change_rating()Kyle McMartin2007-02-26
| | | | Signed-off-by: Kyle McMartin <kyle@parisc-linux.org>
* [PARISC] Remove __read_mostly annotation from command_lineKyle McMartin2007-02-26
| | | | | | | Who cares if it's in the read mostly section when it's going to be discarded anyway? Signed-off-by: Kyle McMartin <kyle@parisc-linux.org>
* Merge master.kernel.org:/pub/scm/linux/kernel/git/kyle/parisc-2.6Linus Torvalds2007-02-26
|\ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | * master.kernel.org:/pub/scm/linux/kernel/git/kyle/parisc-2.6: (78 commits) [PARISC] Use symbolic last syscall in __NR_Linux_syscalls [PARISC] Add missing statfs64 and fstatfs64 syscalls Revert "[PARISC] Optimize TLB flush on SMP systems" [PARISC] Compat signal fixes for 64-bit parisc [PARISC] Reorder syscalls to match unistd.h Revert "[PATCH] make kernel/signal.c:kill_proc_info() static" [PARISC] fix sys_rt_sigqueueinfo [PARISC] fix section mismatch warnings in harmony sound driver [PARISC] do not export get_register/set_register [PARISC] add ENTRY()/ENDPROC() and simplify assembly of HP/UX emulation code [PARISC] convert to use CONFIG_64BIT instead of __LP64__ [PARISC] use CONFIG_64BIT instead of __LP64__ [PARISC] add ASM_EXCEPTIONTABLE_ENTRY() macro [PARISC] more ENTRY(), ENDPROC(), END() conversions [PARISC] fix ENTRY() and ENDPROC() for 64bit-parisc [PARISC] Fixes /proc/cpuinfo cache output on B160L [PARISC] implement standard ENTRY(), END() and ENDPROC() [PARISC] kill ENTRY_SYS_CPUS [PARISC] clean up debugging printks in smp.c [PARISC] factor syscall_restart code out of do_signal ... Fix conflict in include/linux/sched.h due to kill_proc_info() being made publicly available to PARISC again.
| * [PARISC] Add missing statfs64 and fstatfs64 syscallsGuy Martin2007-02-21
| | | | | | | | Signed-off-by: Guy Martin <gmsoft@tuxicoman.be>
| * [PARISC] Compat signal fixes for 64-bit pariscCarlos O'Donell Jr2007-02-17
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | In copy_siginfo_from_user32: Use compat_uptr_t. Use compat_ptr(). In copy_siginfo_to_user32: Use compat_int_t. Use ptr_to_compat(). The sigevent_t structure has a 64-bit si_ptr field that when copied to a 32-bit si_ptr will copy the wrong word. For the compat copy use the si_int field instead. Signed-off-by: Carlos O'Donell <carlos@systemhalted.org> Signed-off-by: Kyle McMartin <kyle@parisc-linux.org>
| * [PARISC] Reorder syscalls to match unistd.hCarlos O'Donell Jr2007-02-17
| | | | | | | | | | | | | | | | | | Move migrate_pages into the same position as specified in unistd.h. This fixes migrate_pages, pselect6 and ppoll syscalls. Signed-off-by: Carlos O'Donell <carlos@systemhalted.org> Signed-off-by: Kyle McMartin <kyle@parisc-linux.org>
| * [PARISC] fix sys_rt_sigqueueinfoKyle McMartin2007-02-17
| | | | | | | | | | | | | | the parisc affecting portion of the patch was inadvertantly reverted a while ago. Signed-off-by: Kyle McMartin <kyle@parisc-linux.org>
| * [PARISC] do not export get_register/set_registerHelge Deller2007-02-17
| | | | | | | | | | | | | | - noticed by Randolph Chung (tausq) Signed-off-by: Helge Deller <deller@gmx.de> Signed-off-by: Kyle McMartin <kyle@parisc-linux.org>
| * [PARISC] add ENTRY()/ENDPROC() and simplify assembly of HP/UX emulation codeHelge Deller2007-02-17
| | | | | | | | | | Signed-off-by: Helge Deller <deller@gmx.de> Signed-off-by: Kyle McMartin <kyle@parisc-linux.org>
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