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2012-03-28Merge tag 'split-asm_system_h-for-linus-20120328' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/dhowells/linux-asm_system Pull "Disintegrate and delete asm/system.h" from David Howells: "Here are a bunch of patches to disintegrate asm/system.h into a set of separate bits to relieve the problem of circular inclusion dependencies. I've built all the working defconfigs from all the arches that I can and made sure that they don't break. The reason for these patches is that I recently encountered a circular dependency problem that came about when I produced some patches to optimise get_order() by rewriting it to use ilog2(). This uses bitops - and on the SH arch asm/bitops.h drags in asm-generic/get_order.h by a circuituous route involving asm/system.h. The main difficulty seems to be asm/system.h. It holds a number of low level bits with no/few dependencies that are commonly used (eg. memory barriers) and a number of bits with more dependencies that aren't used in many places (eg. switch_to()). These patches break asm/system.h up into the following core pieces: (1) asm/barrier.h Move memory barriers here. This already done for MIPS and Alpha. (2) asm/switch_to.h Move switch_to() and related stuff here. (3) asm/exec.h Move arch_align_stack() here. Other process execution related bits could perhaps go here from asm/processor.h. (4) asm/cmpxchg.h Move xchg() and cmpxchg() here as they're full word atomic ops and frequently used by atomic_xchg() and atomic_cmpxchg(). (5) asm/bug.h Move die() and related bits. (6) asm/auxvec.h Move AT_VECTOR_SIZE_ARCH here. Other arch headers are created as needed on a per-arch basis." Fixed up some conflicts from other header file cleanups and moving code around that has happened in the meantime, so David's testing is somewhat weakened by that. We'll find out anything that got broken and fix it.. * tag 'split-asm_system_h-for-linus-20120328' of git://git.kernel.org/pub/scm/linux/kernel/git/dhowells/linux-asm_system: (38 commits) Delete all instances of asm/system.h Remove all #inclusions of asm/system.h Add #includes needed to permit the removal of asm/system.h Move all declarations of free_initmem() to linux/mm.h Disintegrate asm/system.h for OpenRISC Split arch_align_stack() out from asm-generic/system.h Split the switch_to() wrapper out of asm-generic/system.h Move the asm-generic/system.h xchg() implementation to asm-generic/cmpxchg.h Create asm-generic/barrier.h Make asm-generic/cmpxchg.h #include asm-generic/cmpxchg-local.h Disintegrate asm/system.h for Xtensa Disintegrate asm/system.h for Unicore32 [based on ver #3, changed by gxt] Disintegrate asm/system.h for Tile Disintegrate asm/system.h for Sparc Disintegrate asm/system.h for SH Disintegrate asm/system.h for Score Disintegrate asm/system.h for S390 Disintegrate asm/system.h for PowerPC Disintegrate asm/system.h for PA-RISC Disintegrate asm/system.h for MN10300 ...
2012-03-28Delete all instances of asm/system.hDavid Howells
Delete all instances of asm/system.h as they should be redundant by this point. Signed-off-by: David Howells <dhowells@redhat.com>
2012-03-28Move all declarations of free_initmem() to linux/mm.hDavid Howells
Move all declarations of free_initmem() to linux/mm.h so that there's only one and it's used by everything. Signed-off-by: David Howells <dhowells@redhat.com> cc: linux-c6x-dev@linux-c6x.org cc: microblaze-uclinux@itee.uq.edu.au cc: linux-sh@vger.kernel.org cc: sparclinux@vger.kernel.org cc: x86@kernel.org cc: linux-mm@kvack.org
2012-03-28Disintegrate asm/system.h for MicroblazeDavid Howells
Disintegrate asm/system.h for Microblaze. Not compiled. Signed-off-by: David Howells <dhowells@redhat.com> cc: microblaze-uclinux@itee.uq.edu.au
2012-03-27Merge branch 'next' of git://git.monstr.eu/linux-2.6-microblazeLinus Torvalds
Pull arch/microblaze fixes from Michal Simek * 'next' of git://git.monstr.eu/linux-2.6-microblaze: microblaze: Handle TLB skip size dynamically microblaze: Introduce TLB skip size microblaze: Improve TLB calculation for small systems microblaze: Extend space for compiled-in FDT to 32kB microblaze: Clear all MSR flags on the first kernel instruction microblaze: Use node name instead of compatible string microblaze: Fix mapin_ram function microblaze: Highmem support microblaze: Use active regions microblaze: Show more detailed information about memory microblaze: Introduce fixmap microblaze: mm: Fix lowmem max memory size limits microblaze: mm: Use ZONE_DMA instead of ZONE_NORMAL microblaze: trivial: Fix typo fault in timer.c microblaze: Use vsprintf extention %pf with builtin_return_address microblaze: Add PVR version string for MB 8.20.b and 8.30.a microblaze: Fix makefile to work with latest toolchain microblaze: Fix typo in early_printk.c
2012-03-23Merge branch 'akpm' (Andrew's patch-bomb)Linus Torvalds
Merge second batch of patches from Andrew Morton: - various misc things - core kernel changes to prctl, exit, exec, init, etc. - kernel/watchdog.c updates - get_maintainer - MAINTAINERS - the backlight driver queue - core bitops code cleanups - the led driver queue - some core prio_tree work - checkpatch udpates - largeish crc32 update - a new poll() feature for the v4l guys - the rtc driver queue - fatfs - ptrace - signals - kmod/usermodehelper updates - coredump - procfs updates * emailed from Andrew Morton <akpm@linux-foundation.org>: (141 commits) seq_file: add seq_set_overflow(), seq_overflow() proc-ns: use d_set_d_op() API to set dentry ops in proc_ns_instantiate(). procfs: speed up /proc/pid/stat, statm procfs: add num_to_str() to speed up /proc/stat proc: speed up /proc/stat handling fs/proc/kcore.c: make get_sparsemem_vmemmap_info() static coredump: add VM_NODUMP, MADV_NODUMP, MADV_CLEAR_NODUMP coredump: remove VM_ALWAYSDUMP flag kmod: make __request_module() killable kmod: introduce call_modprobe() helper usermodehelper: ____call_usermodehelper() doesn't need do_exit() usermodehelper: kill umh_wait, renumber UMH_* constants usermodehelper: implement UMH_KILLABLE usermodehelper: introduce umh_complete(sub_info) usermodehelper: use UMH_WAIT_PROC consistently signal: zap_pid_ns_processes: s/SEND_SIG_NOINFO/SEND_SIG_FORCED/ signal: oom_kill_task: use SEND_SIG_FORCED instead of force_sig() signal: cosmetic, s/from_ancestor_ns/force/ in prepare_signal() paths signal: give SEND_SIG_FORCED more power to beat SIGNAL_UNKILLABLE Hexagon: use set_current_blocked() and block_sigmask() ...
2012-03-23Remove remaining bits of io_remap_page_range()Javi Merino
Commit 33bf56106d9b ("feature removal of io_remap_page_range()") removed io_remap_page_range(), but it is still included in some arch header files. It has no in-tree users. Signed-off-by: Javi Merino <javi.merino@arm.com> Cc: Russell King <linux@arm.linux.org.uk> Cc: Aurelien Jacquiot <a-jacquiot@ti.com> Cc: Michal Simek <monstr@monstr.eu> Cc: Jonas Bonn <jonas@southpole.se> Cc: Randy Dunlap <rdunlap@xenotime.net> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2012-03-23Merge branch 'linux-next' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/jbarnes/pci Pull PCI changes (including maintainer change) from Jesse Barnes: "This pull has some good cleanups from Bjorn and Yinghai, as well as some more code from Yinghai to better handle resource re-allocation when enabled. There's also a new initcall_debug feature from Arjan which will print out quirk timing information to help identify slow quirks for fixing or refinement (Yinghai sent in a few patches to do just that once the new debug code landed). Beyond that, I'm handing off PCI maintainership to Bjorn Helgaas. He's been a core PCI and Linux contributor for some time now, and has kindly volunteered to take over. I just don't feel I have the time for PCI review and work that it deserves lately (I've taken on some other projects), and haven't been as responsive lately as I'd like, so I approached Bjorn asking if he'd like to manage things. He's going to give it a try, and I'm confident he'll do at least as well as I have in keeping the tree managed, patches flowing, and keeping things stable." Fix up some fairly trivial conflicts due to other cleanups (mips device resource fixup cleanups clashing with list handling cleanup, ppc iseries removal clashing with pci_probe_only cleanup etc) * 'linux-next' of git://git.kernel.org/pub/scm/linux/kernel/git/jbarnes/pci: (112 commits) PCI: Bjorn gets PCI hotplug too PCI: hand PCI maintenance over to Bjorn Helgaas unicore32/PCI: move <asm-generic/pci-bridge.h> include to asm/pci.h sparc/PCI: convert devtree and arch-probed bus addresses to resource powerpc/PCI: allow reallocation on PA Semi powerpc/PCI: convert devtree bus addresses to resource powerpc/PCI: compute I/O space bus-to-resource offset consistently arm/PCI: don't export pci_flags PCI: fix bridge I/O window bus-to-resource conversion x86/PCI: add spinlock held check to 'pcibios_fwaddrmap_lookup()' PCI / PCIe: Introduce command line option to disable ARI PCI: make acpihp use __pci_remove_bus_device instead PCI: export __pci_remove_bus_device PCI: Rename pci_remove_behind_bridge to pci_stop_and_remove_behind_bridge PCI: Rename pci_remove_bus_device to pci_stop_and_remove_bus_device PCI: print out PCI device info along with duration PCI: Move "pci reassigndev resource alignment" out of quirks.c PCI: Use class for quirk for usb host controller fixup PCI: Use class for quirk for ti816x class fixup PCI: Use class for quirk for intel e100 interrupt fixup ...
2012-03-23microblaze: Handle TLB skip size dynamicallyMichal Simek
This patch fix the problem with rootfs on JFFS2 with early printk console turned on. The origin version used TLB63 for temporary early printk mapping. The code expect that kernel is not able to use all 64 TLB entries till early printk console is remapped by ioremap. After that temporary mapping on TLB63 is silently lost. This expectation give the opportunity to have early console pretty early. Microblaze systems with JFFS2 rootfs with early printk console turned on used more than 64 TLB entries before kernel can remap early console. Based on that kernel does access to bad area because early printk mapping is rewritten. This patch introduces tlb_skip variable which dynamically stores number of skipped TLB entries from the TLB0. skip_tlb=2 means that TLB0 and TLB1 should be skipped. MICROBLAZE_TLB_SKIP defines how many TLB is skipped at the kernel start. They can be used for user purpose. TLB 63 is used for temporary LMB mapping (MICROBLAZE_LMB_TLB_ID). Also clean TLBLO when kernel starts. For specific kernel sizes kernel can use just one TLB. Detect this case and use the second TLB for general purpose. Change _tlbia function to flush TLB entries from tlb_skip to TLB_SIZE. Export tlb_skip size through debugfs. Signed-off-by: Michal Simek <monstr@monstr.eu>
2012-03-23microblaze: Introduce TLB skip sizeMichal Simek
TLB skip size direct how many TLBs is skipped. Currently TLB0 and TLB1 are used for Linux kernel mapping that's why their are skipped. Signed-off-by: Michal Simek <monstr@monstr.eu>
2012-03-23microblaze: Improve TLB calculation for small systemsMichal Simek
Systems with small amount of memory need to be handled differently. Linux can't allocate the whole 32MB with two TLBs because then there is no MMU protection. Signed-off-by: Michal Simek <monstr@monstr.eu>
2012-03-23microblaze: Extend space for compiled-in FDT to 32kBMichal Simek
Signed-off-by: Michal Simek <monstr@monstr.eu>
2012-03-23microblaze: Clear all MSR flags on the first kernel instructionMichal Simek
The main reason is bug because of dynamic TLB allocation. U-BOOT didn't disable dcache and then writing to physical address from ASM wan't visible for reading through MMU. Disabling caches and clearing all flags from previous code is good to do so. Signed-off-by: Michal Simek <monstr@monstr.eu>
2012-03-23microblaze: Use node name instead of compatible stringMichal Simek
Change report in bootlog: Origin: xlnx,xps-intc-1.00.a #0 at 0xc8000000, num_irq=6, edge=0x4 xlnx,xps-timer-1.00.a #0 at 0xc8004000, irq=2 New: interrupt-controller #0 at 0xc8000000, num_irq=6, edge=0x4 system-timer #0 at 0xc8004000, irq=2 Signed-off-by: Michal Simek <monstr@monstr.eu>
2012-03-23microblaze: Fix mapin_ram functionMichal Simek
Fix how many pages are allocated in mapin_ram. It is lowmem_size not setup CONFIG_LOWMEM_SIZE because it is the same for all systems. Which means that wrong pages are allocated if memory size is smaller than CONFIG_LOWMEM_SIZE. It has dramatic impact on bootup time. On sp605 MMU full hw design is 7s. Signed-off-by: Michal Simek <monstr@monstr.eu>
2012-03-23microblaze: Highmem supportMichal Simek
The first highmem implementation. Signed-off-by: Michal Simek <monstr@monstr.eu>
2012-03-23microblaze: Use active regionsMichal Simek
Register lowmem active regions. Signed-off-by: Michal Simek <monstr@monstr.eu>
2012-03-23microblaze: Show more detailed information about memoryMichal Simek
Microblaze MMU is similar to ppc that's why ppc layout was reused. Signed-off-by: Michal Simek <monstr@monstr.eu>
2012-03-23microblaze: Introduce fixmapMichal Simek
Fixmap will be used for highmem support. Signed-off-by: Michal Simek <monstr@monstr.eu>
2012-03-23microblaze: mm: Fix lowmem max memory size limitsMichal Simek
Use CONFIG_LOWMEM_SIZE if system has larger ram size. For system with larger ram size, enable HIGMEM support. Also setup limitation for memblock and use memblock allocation in lowmem region. Signed-off-by: Michal Simek <monstr@monstr.eu>
2012-03-23microblaze: mm: Use ZONE_DMA instead of ZONE_NORMALMichal Simek
We should use ZONE_DMA because all address space is dma-able. Signed-off-by: Michal Simek <monstr@monstr.eu>
2012-03-21Merge tag 'irqdomain-for-linus' of git://git.secretlab.ca/git/linux-2.6Linus Torvalds
Pull irq_domain support for all architectures from Grant Likely: "Generialize powerpc's irq_host as irq_domain This branch takes the PowerPC irq_host infrastructure (reverse mapping from Linux IRQ numbers to hardware irq numbering), generalizes it, renames it to irq_domain, and makes it available to all architectures. Originally the plan has been to create an all-new irq_domain implementation which addresses some of the powerpc shortcomings such as not handling 1:1 mappings well, but doing that proved to be far more difficult and invasive than generalizing the working code and refactoring it in-place. So, this branch rips out the 'new' irq_domain and replaces it with the modified powerpc version (in a fully bisectable way of course). It converts all users over to the new API and makes irq_domain selectable on any architecture. No architecture is forced to enable irq_domain, but the infrastructure is required for doing OpenFirmware style irq translations. It will even work on SPARC even though SPARC has it's own mechanism for translating irqs at boot time. MIPS, microblaze, embedded x86 and c6x are converted too. The resulting irq_domain code is probably still too verbose and can be optimized more, but that can be done incrementally and is a task for follow-on patches." * tag 'irqdomain-for-linus' of git://git.secretlab.ca/git/linux-2.6: (31 commits) dt: fix twl4030 for non-dt compile on x86 mfd: twl-core: Add IRQ_DOMAIN dependency devicetree: Add empty of_platform_populate() for !CONFIG_OF_ADDRESS (sparc) irq_domain: Centralize definition of irq_dispose_mapping() irq_domain/mips: Allow irq_domain on MIPS irq_domain/x86: Convert x86 (embedded) to use common irq_domain ppc-6xx: fix build failure in flipper-pic.c and hlwd-pic.c irq_domain/microblaze: Convert microblaze to use irq_domains irq_domain/powerpc: Replace custom xlate functions with library functions irq_domain/powerpc: constify irq_domain_ops irq_domain/c6x: Use library of xlate functions irq_domain/c6x: constify irq_domain structures irq_domain/c6x: Convert c6x to use generic irq_domain support. irq_domain: constify irq_domain_ops irq_domain: Create common xlate functions that device drivers can use irq_domain: Remove irq_domain_add_simple() irq_domain: Remove 'new' irq_domain in favour of the ppc one mfd: twl-core.c: Fix the number of interrupts managed by twl4030 of/address: add empty static inlines for !CONFIG_OF irq_domain: Add support for base irq and hwirq in legacy mappings ...
2012-03-19microblaze: trivial: Fix typo fault in timer.cMichal Simek
Signed-off-by: Michal Simek <monstr@monstr.eu>
2012-03-19microblaze: Use vsprintf extention %pf with builtin_return_addressJoe Perches
Emit the function name not the address when possible. builtin_return_address() gives an address. When building a kernel with CONFIG_KALLSYMS, emit the actual function name not the address. Signed-off-by: Joe Perches <joe@perches.com> Signed-off-by: Michal Simek <monstr@monstr.eu>
2012-03-19microblaze: Add PVR version string for MB 8.20.b and 8.30.aMichal Simek
Just extend PVR reg decoding. Signed-off-by: Michal Simek <monstr@monstr.eu>
2012-03-19microblaze: Fix makefile to work with latest toolchainMichal Simek
When building with latest binutils, vmlinux includes some sections which need to be stripped out when building the binary image. Signed-off-by: Michal Simek <monstr@monstr.eu>
2012-03-19microblaze: Fix typo in early_printk.cMasanari Iida
Correct spelling "remaping" to "remapping" in arch/microblaze/kernel/early_printk.c Signed-off-by: Masanari Iida <standby24x7@gmail.com> Signed-off-by: Michal Simek <monstr@monstr.eu>
2012-03-01sched/rt: Use schedule_preempt_disabled()Thomas Gleixner
Coccinelle based conversion. Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Acked-by: Peter Zijlstra <a.p.zijlstra@chello.nl> Link: http://lkml.kernel.org/n/tip-24swm5zut3h9c4a6s46x8rws@git.kernel.org Signed-off-by: Ingo Molnar <mingo@elte.hu>
2012-02-23PCI: collapse pcibios_resource_to_busBjorn Helgaas
Everybody uses the generic pcibios_resource_to_bus() supplied by the core now, so remove the ARCH_HAS_GENERIC_PCI_OFFSETS used during conversion. Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
2012-02-23microblaze/PCI: get rid of device resource fixupsBjorn Helgaas
Tell the PCI core about host bridge address translation so it can take care of bus-to-resource conversion for us. CC: Michal Simek <monstr@monstr.eu> Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
2012-02-23microblaze/PCI: remove unused pci_flagsBjorn Helgaas
pci_flags is initialized to zero and never modified (I think this was just copied from powerpc). Therefore, "(pci_flags & XX)" is always false and "!(pci_flags & XX)" is always true, and we can remove all references to pci_flags. CC: Michal Simek <monstr@monstr.eu> CC: microblaze-uclinux@itee.uq.edu.au Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
2012-02-16irq_domain/microblaze: Convert microblaze to use irq_domainsGrant Likely
This patch converts Microblaze to use the irq_domain remapper and get away from hard coding the offset between hwirq number and the linux irq number space. This also paves the way for multiple interrupt controllers. v2: Don't enable SPARSE_IRQ and keep NR_IRQS set to 33 Signed-off-by: Grant Likely <grant.likely@secretlab.ca> Signed-off-by: Michal Simek <monstr@monstr.eu> Cc: Rob Herring <rob.herring@calxeda.com> Cc: John Williams <john.williams@petalogix.com> Cc: John Linn <john.linn@xilinx.com>
2012-02-14irq_domain: convert microblaze from irq_host to irq_domainGrant Likely
Trivial change, microblaze doesn't use irq remapping yet. Signed-off-by: Grant Likely <grant.likely@secretlab.ca> Cc: Michal Simek <monstr@monstr.eu> Cc: Thomas Gleixner <tglx@linutronix.de>
2012-01-31Revert "microblaze: Add topology init"Michal Simek
This reverts commit d761f0c521868e59cd0bc59159cbdb4686fe210d. Patch: "cpu: Register a generic CPU device on architectures that currently do not" (sha1: 9f13a1fd452f11c18004ba2422a6384b424ec8a9) selects GENERIC_CPU_DEVICES for Microblaze which register cpu. My patch was done in the same time that's why cpu was registered twice which caused this warning log: ------------[ cut here ]------------ WARNING: at fs/sysfs/dir.c:481 sysfs_add_one+0xb0/0xdc() sysfs: cannot create duplicate filename '/devices/system/cpu/cpu0' Modules linked in: ... Signed-off-by: Michal Simek <monstr@monstr.eu>
2012-01-20microblaze: generic atomic64 supportDaniel Borkmann
This tiny patch adds generic atomic64 support for the Microblaze architecture. The patch is against the latest linux-2.6-microblaze tree. It also fixes the kernel build for microblaze: Error log: CC kernel/trace/trace_clock.o kernel/trace/trace_clock.c:117: error: expected '=', ',', ';', 'asm' or '__attribute__' before 'trace_counter' kernel/trace/trace_clock.c: In function 'trace_clock_counter': kernel/trace/trace_clock.c:126: error: implicit declaration of function 'atomic64_add_return' kernel/trace/trace_clock.c:126: error: 'trace_counter' undeclared (first use in this function) kernel/trace/trace_clock.c:126: error: (Each undeclared identifier is reported only once kernel/trace/trace_clock.c:126: error: for each function it appears in.) make[2]: *** [kernel/trace/trace_clock.o] Error 1 make[1]: *** [kernel/trace] Error 2 make: *** [kernel] Error 2 Signed-off-by: Ariane Keller <ariane.keller@tik.ee.ethz.ch> Signed-off-by: Daniel Borkmann <daniel.borkmann@tik.ee.ethz.ch> Signed-off-by: Michal Simek <monstr@monstr.eu>
2012-01-17Merge branch 'for-linus' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/viro/audit * 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/audit: (29 commits) audit: no leading space in audit_log_d_path prefix audit: treat s_id as an untrusted string audit: fix signedness bug in audit_log_execve_info() audit: comparison on interprocess fields audit: implement all object interfield comparisons audit: allow interfield comparison between gid and ogid audit: complex interfield comparison helper audit: allow interfield comparison in audit rules Kernel: Audit Support For The ARM Platform audit: do not call audit_getname on error audit: only allow tasks to set their loginuid if it is -1 audit: remove task argument to audit_set_loginuid audit: allow audit matching on inode gid audit: allow matching on obj_uid audit: remove audit_finish_fork as it can't be called audit: reject entry,always rules audit: inline audit_free to simplify the look of generic code audit: drop audit_set_macxattr as it doesn't do anything audit: inline checks for not needing to collect aux records audit: drop some potentially inadvisable likely notations ... Use evil merge to fix up grammar mistakes in Kconfig file. Bad speling and horrible grammar (and copious swearing) is to be expected, but let's keep it to commit messages and comments, rather than expose it to users in config help texts or printouts.
2012-01-17audit: inline audit_syscall_entry to reduce burden on archsEric Paris
Every arch calls: if (unlikely(current->audit_context)) audit_syscall_entry() which requires knowledge about audit (the existance of audit_context) in the arch code. Just do it all in static inline in audit.h so that arch's can remain blissfully ignorant. Signed-off-by: Eric Paris <eparis@redhat.com>
2012-01-17Audit: push audit success and retcode into arch ptrace.hEric Paris
The audit system previously expected arches calling to audit_syscall_exit to supply as arguments if the syscall was a success and what the return code was. Audit also provides a helper AUDITSC_RESULT which was supposed to simplify things by converting from negative retcodes to an audit internal magic value stating success or failure. This helper was wrong and could indicate that a valid pointer returned to userspace was a failed syscall. The fix is to fix the layering foolishness. We now pass audit_syscall_exit a struct pt_reg and it in turns calls back into arch code to collect the return value and to determine if the syscall was a success or failure. We also define a generic is_syscall_success() macro which determines success/failure based on if the value is < -MAX_ERRNO. This works for arches like x86 which do not use a separate mechanism to indicate syscall failure. We make both the is_syscall_success() and regs_return_value() static inlines instead of macros. The reason is because the audit function must take a void* for the regs. (uml calls theirs struct uml_pt_regs instead of just struct pt_regs so audit_syscall_exit can't take a struct pt_regs). Since the audit function takes a void* we need to use static inlines to cast it back to the arch correct structure to dereference it. The other major change is that on some arches, like ia64, MIPS and ppc, we change regs_return_value() to give us the negative value on syscall failure. THE only other user of this macro, kretprobe_example.c, won't notice and it makes the value signed consistently for the audit functions across all archs. In arch/sh/kernel/ptrace_64.c I see that we were using regs[9] in the old audit code as the return value. But the ptrace_64.h code defined the macro regs_return_value() as regs[3]. I have no idea which one is correct, but this patch now uses the regs_return_value() function, so it now uses regs[3]. For powerpc we previously used regs->result but now use the regs_return_value() function which uses regs->gprs[3]. regs->gprs[3] is always positive so the regs_return_value(), much like ia64 makes it negative before calling the audit code when appropriate. Signed-off-by: Eric Paris <eparis@redhat.com> Acked-by: H. Peter Anvin <hpa@zytor.com> [for x86 portion] Acked-by: Tony Luck <tony.luck@intel.com> [for ia64] Acked-by: Richard Weinberger <richard@nod.at> [for uml] Acked-by: David S. Miller <davem@davemloft.net> [for sparc] Acked-by: Ralf Baechle <ralf@linux-mips.org> [for mips] Acked-by: Benjamin Herrenschmidt <benh@kernel.crashing.org> [for ppc]
2012-01-17Merge branch 'next' of git://git.monstr.eu/linux-2.6-microblazeLinus Torvalds
* 'next' of git://git.monstr.eu/linux-2.6-microblaze: USB: EHCI: Don't use NO_IRQ in xilinx ehci driver microblaze: Add topology init
2012-01-16Merge branch 'kbuild' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/mmarek/kbuild * 'kbuild' of git://git.kernel.org/pub/scm/linux/kernel/git/mmarek/kbuild: Kbuild: Use dtc's -d (dependency) option dtc: Implement -d option to write out a dependency file kbuild: Fix comment in Makefile.lib scripts/genksyms: clean lex/yacc generated files kbuild: Correctly deal with make options which contain an "s"
2012-01-15Kbuild: Use dtc's -d (dependency) optionStephen Warren
This hooks dtc into Kbuild's dependency system. Thus, for example, "make dtbs" will rebuild tegra-harmony.dtb if only tegra20.dtsi has changed yet tegra-harmony.dts has not. The previous lack of this feature recently caused me to have very confusing "git bisect" results. For ARM, it's obvious what to add to $(targets). I'm not familiar enough with other architectures to know what to add there. Powerpc appears to already add various .dtb files into $(targets), but the other archs may need something added to $(targets) to work. Signed-off-by: Stephen Warren <swarren@nvidia.com> Acked-by: Shawn Guo <shawn.guo@linaro.org> [mmarek: Dropped arch/c6x part to avoid merging commits from the middle of the merge window] Signed-off-by: Michal Marek <mmarek@suse.cz>
2012-01-11Merge branch 'linux-next' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/jbarnes/pci * 'linux-next' of git://git.kernel.org/pub/scm/linux/kernel/git/jbarnes/pci: (80 commits) x86/PCI: Expand the x86_msi_ops to have a restore MSIs. PCI: Increase resource array mask bit size in pcim_iomap_regions() PCI: DEVICE_COUNT_RESOURCE should be equal to PCI_NUM_RESOURCES PCI: pci_ids: add device ids for STA2X11 device (aka ConneXT) PNP: work around Dell 1536/1546 BIOS MMCONFIG bug that breaks USB x86/PCI: amd: factor out MMCONFIG discovery PCI: Enable ATS at the device state restore PCI: msi: fix imbalanced refcount of msi irq sysfs objects PCI: kconfig: English typo in pci/pcie/Kconfig PCI/PM/Runtime: make PCI traces quieter PCI: remove pci_create_bus() xtensa/PCI: convert to pci_scan_root_bus() for correct root bus resources x86/PCI: convert to pci_create_root_bus() and pci_scan_root_bus() x86/PCI: use pci_scan_bus() instead of pci_scan_bus_parented() x86/PCI: read Broadcom CNB20LE host bridge info before PCI scan sparc32, leon/PCI: convert to pci_scan_root_bus() for correct root bus resources sparc/PCI: convert to pci_create_root_bus() sh/PCI: convert to pci_scan_root_bus() for correct root bus resources powerpc/PCI: convert to pci_create_root_bus() powerpc/PCI: split PHB part out of pcibios_map_io_space() ... Fix up conflicts in drivers/pci/msi.c and include/linux/pci_regs.h due to the same patches being applied in other branches.
2012-01-11cpu: Register a generic CPU device on architectures that currently do notBen Hutchings
frv, h8300, m68k, microblaze, openrisc, score, um and xtensa currently do not register a CPU device. Add the config option GENERIC_CPU_DEVICES which causes a generic CPU device to be registered for each present CPU, and make all these architectures select it. Richard Weinberger <richard@nod.at> covered UML and suggested using per_cpu. Signed-off-by: Ben Hutchings <ben@decadent.org.uk> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2012-01-11microblaze: Add topology initMichal Simek
Init topology subsystem by cpu registration. Microblaze Linux kernel is fauling by "Oops: kernel access of bad area, sig: 11" because cpu is not initialized. Signed-off-by: Michal Simek <monstr@monstr.eu>
2012-01-10Merge tag 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/mst/vhostLinus Torvalds
lib: use generic pci_iomap on all architectures Many architectures don't want to pull in iomap.c, so they ended up duplicating pci_iomap from that file. That function isn't trivial, and we are going to modify it https://lkml.org/lkml/2011/11/14/183 so the duplication hurts. This reduces the scope of the problem significantly, by moving pci_iomap to a separate file and referencing that from all architectures. * tag 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/mst/vhost: alpha: drop pci_iomap/pci_iounmap from pci-noop.c mn10300: switch to GENERIC_PCI_IOMAP mn10300: add missing __iomap markers frv: switch to GENERIC_PCI_IOMAP tile: switch to GENERIC_PCI_IOMAP tile: don't panic on iomap sparc: switch to GENERIC_PCI_IOMAP sh: switch to GENERIC_PCI_IOMAP powerpc: switch to GENERIC_PCI_IOMAP parisc: switch to GENERIC_PCI_IOMAP mips: switch to GENERIC_PCI_IOMAP microblaze: switch to GENERIC_PCI_IOMAP arm: switch to GENERIC_PCI_IOMAP alpha: switch to GENERIC_PCI_IOMAP lib: add GENERIC_PCI_IOMAP lib: move GENERIC_IOMAP to lib/Kconfig Fix up trivial conflicts due to changes nearby in arch/{m68k,score}/Kconfig
2012-01-10Merge branch 'next' of git://git.monstr.eu/linux-2.6-microblazeLinus Torvalds
* 'next' of git://git.monstr.eu/linux-2.6-microblaze: microblaze: Wire-up new system calls microblaze: Remove NO_IRQ from architecture input: xilinx_ps2: Don't use NO_IRQ block: xsysace: Don't use NO_IRQ microblaze: Trivial asm fix microblaze: Fix debug message in module microblaze: Remove eprintk macro microblaze: Send CR before LF for early console microblaze: Change NO_IRQ to 0 microblaze: Use irq_of_parse_and_map for timer microblaze: intc: Change variable name microblaze: Use of_find_compatible_node for timer and intc microblaze: Add __cmpdi2 microblaze: Synchronize __pa __va macros
2012-01-08Merge branch 'pm-for-linus' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm * 'pm-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm: (76 commits) PM / Hibernate: Implement compat_ioctl for /dev/snapshot PM / Freezer: fix return value of freezable_schedule_timeout_killable() PM / shmobile: Allow the A4R domain to be turned off at run time PM / input / touchscreen: Make st1232 use device PM QoS constraints PM / QoS: Introduce dev_pm_qos_add_ancestor_request() PM / shmobile: Remove the stay_on flag from SH7372's PM domains PM / shmobile: Don't include SH7372's INTCS in syscore suspend/resume PM / shmobile: Add support for the sh7372 A4S power domain / sleep mode PM: Drop generic_subsys_pm_ops PM / Sleep: Remove forward-only callbacks from AMBA bus type PM / Sleep: Remove forward-only callbacks from platform bus type PM: Run the driver callback directly if the subsystem one is not there PM / Sleep: Make pm_op() and pm_noirq_op() return callback pointers PM/Devfreq: Add Exynos4-bus device DVFS driver for Exynos4210/4212/4412. PM / Sleep: Merge internal functions in generic_ops.c PM / Sleep: Simplify generic system suspend callbacks PM / Hibernate: Remove deprecated hibernation snapshot ioctls PM / Sleep: Fix freezer failures due to racy usermodehelper_is_disabled() ARM: S3C64XX: Implement basic power domain support PM / shmobile: Use common always on power domain governor ... Fix up trivial conflict in fs/xfs/xfs_buf.c due to removal of unused XBT_FORCE_SLEEP bit
2012-01-07Merge tag 'gpio-for-linus' of git://git.secretlab.ca/git/linux-2.6Linus Torvalds
Changes queued in gpio/next for the start of the 3.3 merge window * tag 'gpio-for-linus-20120104' of git://git.secretlab.ca/git/linux-2.6: gpio: Add decode of WM8994 GPIO configuration gpio: Convert GPIO drivers to module_platform_driver gpio: Fix typo in comment in Samsung driver gpio: Explicitly index samsung_gpio_cfgs gpio: Add Linus Walleij as gpio co-maintainer of: Add device tree selftests of: create of_phandle_args to simplify return of phandle parsing data gpio/powerpc: Eliminate duplication of of_get_named_gpio_flags() gpio/microblaze: Eliminate duplication of of_get_named_gpio_flags() gpiolib: output basic details and consolidate gpio device drivers pch_gpio: Change company name OKI SEMICONDUCTOR to LAPIS Semiconductor pch_gpio: Support new device LAPIS Semiconductor ML7831 IOH spi/pl022: make the chip deselect handling thread safe spi/pl022: add support for pm_runtime autosuspend spi/pl022: disable the PL022 block when unused spi/pl022: move device disable to workqueue thread spi/pl022: skip default configuration before suspending spi/pl022: fix build warnings spi/pl022: only enable RX interrupts when TX is complete
2012-01-06microblaze/PCI: use pci_scan_root_bus()Bjorn Helgaas
Microblaze doesn't need to replace pci_scan_child_bus() or do anything special before pci_bus_add_devices(), so we can use the more generic PCI path in pci_scan_root_bus(). CC: Michal Simek <monstr@monstr.eu> Signed-off-by: Bjorn Helgaas <bhelgaas@google.com> Signed-off-by: Jesse Barnes <jbarnes@virtuousgeek.org>
2012-01-06microblaze/PCI: convert to pci_create_root_bus() for correct root bus resourcesBjorn Helgaas
Convert from pci_create_bus() to pci_create_root_bus(). This way the root bus resources are correct immediately. This patch doesn't fix a problem because microblaze fixed the resources before scanning the bus, but it makes microblaze more consistent with other architectures. It also allows us to use the pci_scan_root_bus() path safely. CC: Michal Simek <monstr@monstr.eu> Signed-off-by: Bjorn Helgaas <bhelgaas@google.com> Signed-off-by: Jesse Barnes <jbarnes@virtuousgeek.org>