1. 12 Apr, 2004 40 commits
    • Andrew Morton's avatar
      [PATCH] posix message queues: made user mountable · b95db642
      Andrew Morton authored
      From: Manfred Spraul <manfred@colorfullife.com>
      
      Make the posix message queue mountable by the user.  This replaces ipcs and
      ipcrm for posix message queue: The admin can check which queues exist with ls
      and remove stale queues with rm.
      
      I'd like a final confirmation from Ulrich that our SIGEV_THREAD approach is
      the right thing(tm): He's aware of the design and didn't object, but I think
      he hasn't seen the final API yet.
      b95db642
    • Andrew Morton's avatar
      [PATCH] posix message queues: linux-specific poll extension · 0301b50b
      Andrew Morton authored
      From: Manfred Spraul <manfred@colorfullife.com>
      
      Linux specific extension: make the message queue identifiers pollable.  It's
      simple and could be useful.
      0301b50b
    • Andrew Morton's avatar
      [PATCH] posix message queues: implementation · be94d44e
      Andrew Morton authored
      From: Manfred Spraul <manfred@colorfullife.com>
      
      Actual implementation of the posix message queues, written by Krzysztof
      Benedyczak and Michal Wronski.  The complete implementation is dependant on
      CONFIG_POSIX_MQUEUE.
      
      It passed the openposix test suite with two exceptions: one mq_unlink test
      was bad and tested undefined behavior.  And Linux succeeds
      mq_close(open(,,,)).  The spec mandates EBADF, but we have decided to ignore
      that: we would have to add a new syscall just for the right error code.
      
      The patch intentionally doesn't use all helpers from fs/libfs for kernel-only
      filesystems: step 5 allows user space mounts of the file system.
      
      
      
      Signal changes:
      
      The patch redefines SI_MESGQ using __SI_CODE: The generic Linux ABI uses
      a negative value (i.e.  from user) for SI_MESGQ, but the kernel internal
      value must be posive to pass check_kill_value.  Additionally, the patch
      adds support into copy_siginfo_to_user to copy the "new" signal type to
      user space.
      
      
      
      Changes in signal code caused by POSIX message queues patch:
      
      General & rationale:
      
        mqueues generated signals (only upon notification) must have si_code
        == SI_MESGQ.  In fact such a signal is send from one process which
        caused notification (== sent message to empty message queue) to
        another which requested it.  Both processes can be of course unrelated
        in terms of uids/euids.  So SI_MESGQ signals must be classified as
        SI_FROMKERNEL to pass check_kill_permissions (not need to say that
        this signals ARE from kernel).
      
        Signals generated by message queues notification need the same
        fields in siginfo struct's union _sifields as POSIX.1b signals and we
        can reuse its union entry.
      
        SI_MESGQ was previously defined to -3 in kernel and also in glibc. 
        So in userspace SI_MESGQ must be still visible as -3.
      
      Solution:
      
        SI_MESGQ is defined in the same style as SI_TIMER using __SI_CODE macro.
      
        Details:
      
          Fortunately copy_siginfo_to_user copies si_code as short.  So we
          can use remaining part of int value freely.  __SI_CODE does the
          work.  SI_MESGQ is in kernel:
      
       		6<<16 | (-3 & 0xffff) what is > 0
      
          but to userspace is copied
      
       		(short) SI_MESGQ == -3
      
      Actual changes:
      
        Changes in include/asm-generic/siginfo.h
      
        __SI_MESGQ added in signal.h to represent inside-kernel prefix of
        SI_MESGQ.  SI_MESGQ is redefined from -3 to __SI_CODE(__SI_MESGQ, -3)
      
        Except mips architecture those changes should be arch independent
        (asm-generic/siginfo.h is included in arch versions).  On mips
        SI_MESGQ is redefined to -4 in order to be compatible with IRIX.  But
        the same schema can be used.
      
        Change in copy_siginfo_to_user: We only add one line to order the
        same copy semantics as for _SI_RT.
      
        This change isn't very portable - some arch have its own
        copy_siginfo_to_user.  All those should have similar change (but
        possibly not one-line as _SI_RT case was sometimes ignored because i
        wasn't used yet, e.g.  see ia64 signal.c).
      
      Update:
      mq: only fail with invalid timespec if mq_timed{send,receive} needs to block
      From: Jakub Jelinek <jakub@redhat.com>
      
      POSIX requires EINVAL to be set if:
      "The process or thread would have blocked, and the abs_timeout parameter
      specified a nanoseconds field value less than zero or greater than or equal
      to 1000 million."
      but 2.6.5-mm3 returns -EINVAL even if the process or thread would not block
      (if the queue is not empty for timedreceive or not full for timedsend).
      be94d44e
    • Andrew Morton's avatar
      [PATCH] posix message queues: syscall stubs · c50142a5
      Andrew Morton authored
      From: Manfred Spraul <manfred@colorfullife.com>
      
      Add -ENOSYS stubs for the posix message queue syscalls.  The API is a direct
      mapping of the api from the unix spec, with two exceptions:
      
      - mq_close() doesn't exist.  Message queue file descriptors can be closed
        with close().
      
      - mq_notify(SIGEV_THREAD) cannot be implemented in the kernel.  The kernel
        returns a pollable file descriptor .  User space must poll (or read) this
        descriptor and call the notifier function if the file descriptor is
        signaled.
      c50142a5
    • Andrew Morton's avatar
      [PATCH] posix message queues: code move · c334f752
      Andrew Morton authored
      From: Manfred Spraul <manfred@colorfullife.com>
      
      cleanup of sysv ipc as a preparation for posix message queues:
      
      - replace !CONFIG_SYSVIPC wrappers for copy_semundo and exit_sem with
        static inline wrappers.  Now the whole ipc/util.c file is only used if
        CONFIG_SYSVIPC is set, use makefile magic instead of #ifdef.
      
      - remove the prototypes for copy_semundo and exit_sem from kernel/fork.c
      
      - they belong into a header file.
      
      - create a new msgutil.c with the helper functions for message queues.
      
      - cleanup the helper functions: run Lindent, add __user tags.
      c334f752
    • Andrew Morton's avatar
      [PATCH] md: merge_bvec_fn needs to know about partitions. · 00d1b0e9
      Andrew Morton authored
      From: Neil Brown <neilb@cse.unsw.edu.au>
      
      Addresses http://bugme.osdl.org/show_bug.cgi?id=2355
      
      It seems that a merge_bvec_fn needs to be aware of partitioning...  who
      would have thought it :-(
      
      The following patch should fix the merge_bvec_fn for both linear and raid0.
      We teach linear and raid0 about partitions in the merge_bvec_fn.
      
      ->merge_bvec_fn needs to make decisions based on the physical geometry of the
      device.  For raid0, it needs to decide if adding the bvec to the bio will
      make the bio span two drives.
      
      To do this, it needs to know where the request is (what the sector number is)
      in the whole device.
      
      However when called from bio_add_page, bi_sector is the sector number
      relative to the current partition, as generic_make_request hasn't been called
      yet.
      
      So raid_mergeable_bvec needs to map bio->bi_sector (which is partition
      relative) to a bi_sector which is device relative, so it can perform proper
      calculations about when chunk boundaries are.
      00d1b0e9
    • Andrew Morton's avatar
      [PATCH] knfsd: Add data integrity to serve rside gss · 9abdc660
      Andrew Morton authored
      From: NeilBrown <neilb@cse.unsw.edu.au>
      
      From: "J. Bruce Fields" <bfields@fieldses.org>
      
      rpcsec_gss supports three security levels:
      
      1.  authentication only: sign the header of each rpc request and response.
      
      2. integrity: sign the header and body of each rpc request and response.
      
      3.  privacy: sign the header and encrypt the body of each rpc request and
         response.
      
      The first 2 are already supported on the client; this adds integrity support
      on the server.
      9abdc660
    • Andrew Morton's avatar
      [PATCH] knfsd: Export a symbol needed by auth_gss · 238a06e2
      Andrew Morton authored
      From: NeilBrown <neilb@cse.unsw.edu.au>
      
      From: "J. Bruce Fields" <bfields@fieldses.org>
      
      Without this compiling auth_gss as module fails.
      238a06e2
    • Andrew Morton's avatar
      [PATCH] knfsd: Improve UTF8 checking. · 1a260c78
      Andrew Morton authored
      From: NeilBrown <neilb@cse.unsw.edu.au>
      
      From: Fred.  We don't do all the utf8 checking we could in the kernel, but we
      do some simple checks.  Implement slightly stricter, and probably more
      efficient, checking.
      1a260c78
    • Andrew Morton's avatar
      [PATCH] knfsd: Add server-side support for the nfsv4 mounted_on_fileid attribute. · c02c0886
      Andrew Morton authored
      From: NeilBrown <neilb@cse.unsw.edu.au>
      c02c0886
    • Andrew Morton's avatar
      [PATCH] knfsd: Remove name_lookup.h that noone is using anymore. · 94b1c3eb
      Andrew Morton authored
      From: NeilBrown <neilb@cse.unsw.edu.au>
      94b1c3eb
    • Andrew Morton's avatar
      [PATCH] knfsd: fix a problem with incorrectly formatted auth_error returns. · 5b2b9a81
      Andrew Morton authored
      From: NeilBrown <neilb@cse.unsw.edu.au>
      
      From: Fred Isaman
      5b2b9a81
    • Andrew Morton's avatar
      [PATCH] knfsd: Minor fix to error return when updating server authentication information · d4658c74
      Andrew Morton authored
      From: NeilBrown <neilb@cse.unsw.edu.au>
      d4658c74
    • Andrew Morton's avatar
      [PATCH] knfsd: Return -EOPNOTSUPP when unknown mechanism name encountered · 4f9c4e9d
      Andrew Morton authored
      From: NeilBrown <neilb@cse.unsw.edu.au>
      
      It's better than oopsing.
      4f9c4e9d
    • Andrew Morton's avatar
      [PATCH] search for /init for initramfs boots · 8b770c1d
      Andrew Morton authored
      From: Olaf Hering <olh@suse.de>
      
      initramfs can not be used in current 2.6 kernels, the files will never be
      executed because prepare_namespace doesn't care about them.  The only way to
      workaround that limitation is a root=0:0 cmdline option to force rootfs as
      root filesystem.  This will break further booting because rootfs is not the
      final root filesystem.
      
      This patch checks for the presence of /init which comes from the cpio archive
      (and thats the only way to store files into the rootfs).  This binary/script
      has to do all the work of prepare_namespace().
      8b770c1d
    • Andrew Morton's avatar
      [PATCH] fs/inode.c list_head cleanup · 27d2e5e5
      Andrew Morton authored
      Teach inode.c about list_move().
      27d2e5e5
    • Andrew Morton's avatar
      [PATCH] Quota locking fixes · ed678f13
      Andrew Morton authored
      From: Jan Kara <jack@ucw.cz>
      
      Change locking rules in quota code to fix lock ordering especially wrt
      journal lock.  Also some unnecessary spinlocking is removed.  The locking
      changes are mainly: dqptr_sem, dqio_sem are acquired only when transaction is
      already started, dqonoff_sem before a transaction is started.  This change
      requires some callbacks to ext3 (also implemented in this patch) to start
      transaction before the locks are acquired.
      ed678f13
    • Andrew Morton's avatar
      [PATCH] ppc44x: fix memory leak · a97de48b
      Andrew Morton authored
      From: Matt Porter <mporter@kernel.crashing.org>
      
      This fixes a memory leak when freeing pgds on PPC44x.
      a97de48b
    • Andrew Morton's avatar
      [PATCH] ppc64: UP compile fixes · 425c9687
      Andrew Morton authored
      From: Anton Blanchard <anton@samba.org>
      
      UP compile fixes
      425c9687
    • Andrew Morton's avatar
      [PATCH] ppc64: Quieten NVRAM driver · acfc20f7
      Andrew Morton authored
      From: Anton Blanchard <anton@samba.org>
      
      Quieten NVRAM driver
      acfc20f7
    • Andrew Morton's avatar
      [PATCH] ppc64: Remove unused rtas functions · ec19a28d
      Andrew Morton authored
      From: Joel Schopp <jschopp@austin.ibm.com>
      
      I was looking at rtas serialization for reasons I won't go into here.
      While wandering through the code I found that two functions were not
      properly serialized.  phys_call_rtas and phys_call_rtas_display_status are
      the functions.  After looking further they are redundant and not
      used anywhere at all.
      ec19a28d
    • Andrew Morton's avatar
      [PATCH] ppc64: DMA API updates · 9ed9e7e5
      Andrew Morton authored
      From: Anton Blanchard <anton@samba.org>
      
      DMA API updates, in particular adding the new cache flush interfaces.
      9ed9e7e5
    • Andrew Morton's avatar
      [PATCH] ppc64: Add smt_snooze_delay cpu sysfs attribute · b7ceb145
      Andrew Morton authored
      From: Anton Blanchard <anton@samba.org>
      
      Add smt_snooze_delay cpu sysfs attribute
      b7ceb145
    • Andrew Morton's avatar
      [PATCH] ppc64: Oops cleanup · c3a85f1f
      Andrew Morton authored
      From: Anton Blanchard <anton@samba.org>
      
      Oops cleanup:
      
      - Move prototypes into system.h
      - Move the debugger hooks into die, all the calls sites were calling them.
      - Handle bad values passed to prregs
      c3a85f1f
    • Andrew Morton's avatar
      [PATCH] ppc64: add platform identification to oops messages · fbe3e9b6
      Andrew Morton authored
      From: Anton Blanchard <anton@samba.org>
      fbe3e9b6
    • Andrew Morton's avatar
      [PATCH] ppc64: replace vio_dma_mapping_error with dma_mapping_error everywhere. · 53e8cdeb
      Andrew Morton authored
      From: Stephen Rothwell <sfr@canb.auug.org.au>
      
      James Bottomley is right, this was a mistake.  This patch replaces
      vio_dma_mapping_error with dma_mapping_error everywhere.
      53e8cdeb
    • Andrew Morton's avatar
      [PATCH] ppc64: change the iSeries virtual device drivers to use the vio... · 8277a1fa
      Andrew Morton authored
      [PATCH] ppc64: change the iSeries virtual device drivers to use the vio infrastructure for DMA mapping
      
      From: Stephen Rothwell <sfr@canb.auug.org.au>
      
      This patch changes the iSeries virtual device drivers to use the
      vio infrastructure for DMA mapping instead of the PCI infrastructure.
      This is a step along the way to integrating them correctly into the
      driver model.
      8277a1fa
    • Andrew Morton's avatar
      [PATCH] ppc64: Consolidate some of the iommu DMA mapping routines. · e1df56ff
      Andrew Morton authored
      From: Stephen Rothwell <sfr@canb.auug.org.au>
      
      This patch consolidates some of the iommu DMA mapping routines.
      e1df56ff
    • Andrew Morton's avatar
      [PATCH] ppc64: Use enum dma_data_direction for all APIs · 9b678c1e
      Andrew Morton authored
      From: Stephen Rothwell <sfr@canb.auug.org.au>
      
      This is just a cleanup to use enum dma_data_direction for all APIs
      except the pci_dma_ ones (since they are defined generically).
      
      Also make most of the functions in arch/ppc64/kernel/pci_iommu.c
      static.
      9b678c1e
    • Andrew Morton's avatar
      [PATCH] ppc64: Use enum dma_data_direction for the vio DMA api routines. · f4421b9c
      Andrew Morton authored
      From: Stephen Rothwell <sfr@canb.auug.org.au>
      
      This patch uses enum dma_data_direction for the vio DMA api routines.
      This allows us to remove some include of linux/pci.h.
      
      Also missed some pci_dma_mapping_error uses.
      f4421b9c
    • Andrew Morton's avatar
      [PATCH] ppc64: Register secondary threads in NUMA init code · 61d5b689
      Andrew Morton authored
      From: Anton Blanchard <anton@samba.org>
      
      Register secondary threads in NUMA init code
      61d5b689
    • Andrew Morton's avatar
      [PATCH] ppc64: Add HW PMC support to oprofile · 36af1eb0
      Andrew Morton authored
      From: Anton Blanchard <anton@samba.org>
      
      Add HW PMC support to oprofile
      36af1eb0
    • Andrew Morton's avatar
      [PATCH] ppc64: Add PMCs to sysfs · 12c9ae0d
      Andrew Morton authored
      From: Anton Blanchard <anton@samba.org>
      
      Add PMCs to sysfs.
      12c9ae0d
    • Andrew Morton's avatar
      [PATCH] ppc64: Add some POWER5 specific optimisations · c1a86d3b
      Andrew Morton authored
      From: Anton Blanchard <anton@samba.org>
      
      Add some POWER5 specific optimisations:
      - icache is coherent, no need to explicitly flush
      - tlbie lock no longer required
      c1a86d3b
    • Andrew Morton's avatar
      [PATCH] ppc64: Move sysfs specific stuff into sysfs.c · 01007b4e
      Andrew Morton authored
      From: Anton Blanchard <anton@samba.org>
      
      Move sysfs specific stuff into sysfs.c
      01007b4e
    • Andrew Morton's avatar
      [PATCH] ppc64: Update CPU features · 0e75cd78
      Andrew Morton authored
      From: Anton Blanchard <anton@samba.org>
      
      Update CPU features. Remove DABR feature, all cpus have it. Add MMCRA,
      PMC8, SMT, COHERENT_ICACHE, LOCKLESS_TLBIE features
      0e75cd78
    • Andrew Morton's avatar
      [PATCH] ppc64: Put SMT threads into global interrupt queue · 0a8d8fbc
      Andrew Morton authored
      From: David Engebretsen <engebret@us.ibm.com>
      
      Put SMT threads into global interrupt queue
      0a8d8fbc
    • Andrew Morton's avatar
      [PATCH] ppc64: Create xics get_irq_server · 0b29d5e7
      Andrew Morton authored
      From: Anton Blanchard <anton@samba.org>
      
      Create xics get_irq_server and use it in enable/disable code.
      0b29d5e7
    • Andrew Morton's avatar
      [PATCH] ppc64: irq cleanups · b9027516
      Andrew Morton authored
      From: Paul Mackerras <paulus@samba.org>
      
      Create and use irq_offset_up/down, get_irq_desc, for_each_irq
      b9027516
    • Andrew Morton's avatar
      [PATCH] ppc64: Fix xics irq affinity bug · 23f217fa
      Andrew Morton authored
      From: Anton Blanchard <anton@samba.org>
      
      Fix xics irq affinity bug. We were anding with cpu_online_map but werent
      using the result later on.
      23f217fa