Eric Lee / smarc-fsl-linux-kernel

17 Nov, 2011

1 commit

  • 34324dc2b   net: remove NETIF_F_NO_CSUM feature bit ... Browse Code »

    Only distinct use is checking if NETIF_F_NOCACHE_COPY should be
    enabled by default. The check heuristics is altered a bit here,
    so it hits other people than before. The default shouldn't be
    trusted for performance-critical cases anyway.

    For all other uses NETIF_F_NO_CSUM is equivalent to NETIF_F_HW_CSUM.

    Signed-off-by: Michał Mirosław
    Signed-off-by: David S. Miller

    Michał Mirosław
     

20 Jun, 2011

1 commit

25 Nov, 2010

1 commit

  • c22c7aeff   sgi-xpc: XPC fails to discover partitions with all nasids above 128 ... Browse Code »

    UV hardware defines 256 memory protection regions versus the baseline 64
    with increasing size for the SN2 ia64. This was overlooked when XPC was
    modified to accomodate both UV and SN2.

    Without this patch, a user could reconfigure their existing system and
    suddenly disable cross-partition communications with no indication of what
    has gone wrong. It also prevents larger configurations from using
    cross-partition communication.

    Signed-off-by: Robin Holt
    Cc:
    Signed-off-by: Andrew Morton
    Signed-off-by: Linus Torvalds

    Robin@sgi.com
     

27 Oct, 2010

1 commit

  • 09358972b   sgi-xp: incoming XPC channel messages can come in after the channel's partition … ... Browse Code »

    …structures have been torn down

    Under some workloads, some channel messages have been observed being
    delayed on the sending side past the point where the receiving side has
    been able to tear down its partition structures.

    This condition is already detected in xpc_handle_activate_IRQ_uv(), but
    that information is not given to xpc_handle_activate_mq_msg_uv(). As a
    result, xpc_handle_activate_mq_msg_uv() assumes the structures still exist
    and references them, causing a NULL-pointer deref.

    Signed-off-by: Robin Holt <holt@sgi.com>
    Cc: <stable@kernel.org>
    Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
    Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

    Robin Holt
     

30 Mar, 2010

1 commit

  • 5a0e3ad6a   include cleanup: Update gfp.h and slab.h includes to prepare for breaking implic… ... Browse Code »

    …it slab.h inclusion from percpu.h

    percpu.h is included by sched.h and module.h and thus ends up being
    included when building most .c files. percpu.h includes slab.h which
    in turn includes gfp.h making everything defined by the two files
    universally available and complicating inclusion dependencies.

    percpu.h -> slab.h dependency is about to be removed. Prepare for
    this change by updating users of gfp and slab facilities include those
    headers directly instead of assuming availability. As this conversion
    needs to touch large number of source files, the following script is
    used as the basis of conversion.

    http://userweb.kernel.org/~tj/misc/slabh-sweep.py

    The script does the followings.

    * Scan files for gfp and slab usages and update includes such that
    only the necessary includes are there. ie. if only gfp is used,
    gfp.h, if slab is used, slab.h.

    * When the script inserts a new include, it looks at the include
    blocks and try to put the new include such that its order conforms
    to its surrounding. It's put in the include block which contains
    core kernel includes, in the same order that the rest are ordered -
    alphabetical, Christmas tree, rev-Xmas-tree or at the end if there
    doesn't seem to be any matching order.

    * If the script can't find a place to put a new include (mostly
    because the file doesn't have fitting include block), it prints out
    an error message indicating which .h file needs to be added to the
    file.

    The conversion was done in the following steps.

    1. The initial automatic conversion of all .c files updated slightly
    over 4000 files, deleting around 700 includes and adding ~480 gfp.h
    and ~3000 slab.h inclusions. The script emitted errors for ~400
    files.

    2. Each error was manually checked. Some didn't need the inclusion,
    some needed manual addition while adding it to implementation .h or
    embedding .c file was more appropriate for others. This step added
    inclusions to around 150 files.

    3. The script was run again and the output was compared to the edits
    from #2 to make sure no file was left behind.

    4. Several build tests were done and a couple of problems were fixed.
    e.g. lib/decompress_*.c used malloc/free() wrappers around slab
    APIs requiring slab.h to be added manually.

    5. The script was run on all .h files but without automatically
    editing them as sprinkling gfp.h and slab.h inclusions around .h
    files could easily lead to inclusion dependency hell. Most gfp.h
    inclusion directives were ignored as stuff from gfp.h was usually
    wildly available and often used in preprocessor macros. Each
    slab.h inclusion directive was examined and added manually as
    necessary.

    6. percpu.h was updated not to include slab.h.

    7. Build test were done on the following configurations and failures
    were fixed. CONFIG_GCOV_KERNEL was turned off for all tests (as my
    distributed build env didn't work with gcov compiles) and a few
    more options had to be turned off depending on archs to make things
    build (like ipr on powerpc/64 which failed due to missing writeq).

    * x86 and x86_64 UP and SMP allmodconfig and a custom test config.
    * powerpc and powerpc64 SMP allmodconfig
    * sparc and sparc64 SMP allmodconfig
    * ia64 SMP allmodconfig
    * s390 SMP allmodconfig
    * alpha SMP allmodconfig
    * um on x86_64 SMP allmodconfig

    8. percpu.h modifications were reverted so that it could be applied as
    a separate patch and serve as bisection point.

    Given the fact that I had only a couple of failures from tests on step
    6, I'm fairly confident about the coverage of this conversion patch.
    If there is a breakage, it's likely to be something in one of the arch
    headers which should be easily discoverable easily on most builds of
    the specific arch.

    Signed-off-by: Tejun Heo <tj@kernel.org>
    Guess-its-ok-by: Christoph Lameter <cl@linux-foundation.org>
    Cc: Ingo Molnar <mingo@redhat.com>
    Cc: Lee Schermerhorn <Lee.Schermerhorn@hp.com>

    Tejun Heo
     

07 Mar, 2010

1 commit

  • 984b3f574   bitops: rename for_each_bit() to for_each_set_bit() ... Browse Code »

    Rename for_each_bit to for_each_set_bit in the kernel source tree. To
    permit for_each_clear_bit(), should that ever be added.

    The patch includes a macro to map the old for_each_bit() onto the new
    for_each_set_bit(). This is a (very) temporary thing to ease the migration.

    [akpm@linux-foundation.org: add temporary for_each_bit()]
    Suggested-by: Alexey Dobriyan
    Suggested-by: Andrew Morton
    Signed-off-by: Akinobu Mita
    Cc: "David S. Miller"
    Cc: Russell King
    Cc: David Woodhouse
    Cc: Artem Bityutskiy
    Cc: Stephen Rothwell
    Signed-off-by: Andrew Morton
    Signed-off-by: Linus Torvalds

    Akinobu Mita
     

16 Dec, 2009

6 commits

  • 57e6d258b   UV - XPC: pass nasid instead of nid to gru_create_message_queue ... Browse Code »

    Currently, the UV xpc code is passing nid to the gru_create_message_queue
    instead of nasid as it expects.

    Signed-off-by: Robin Holt
    Signed-off-by: Jack Steiner
    Signed-off-by: Andrew Morton
    Signed-off-by: Linus Torvalds

    Robin Holt
     
  • 046d6c563   x86: uv: XPC receive message reuse triggers invalid BUG_ON() ... Browse Code »

    This was a difficult bug to trip. XPC was in the middle of sending an
    acknowledgement for a received message.

    In xpc_received_payload_uv():
    .
    ret = xpc_send_gru_msg(ch->sn.uv.cached_notify_gru_mq_desc, msg,
    sizeof(struct xpc_notify_mq_msghdr_uv));
    if (ret != xpSuccess)
    XPC_DEACTIVATE_PARTITION(&xpc_partitions[ch->partid], ret);

    msg->hdr.msg_slot_number += ch->remote_nentries;

    at the point in xpc_send_gru_msg() where the hardware has dispatched the
    acknowledgement, the remote side is able to reuse the message structure
    and send a message with a different slot number. This problem is made
    worse by interrupts.

    The adjustment of msg_slot_number and the BUG_ON in
    xpc_handle_notify_mq_msg_uv() which verifies the msg_slot_number is
    consistent are only used for debug purposes. Since a fix for this that
    preserves the debug functionality would either have to infringe upon the
    payload or allocate another structure just for debug, I decided to remove
    it entirely.

    Signed-off-by: Robin Holt
    Cc: Jack Steiner
    Cc: Ingo Molnar
    Signed-off-by: Andrew Morton
    Signed-off-by: Linus Torvalds

    Robin Holt
     
  • dbd2918ec   X86: uv: xpc_make_first_contact hang due to not accepting ACTIVE state ... Browse Code »

    Many times while the initial connection is being made, the contacted
    partition will send back both the ACTIVATING and the ACTIVE
    remote_act_state changes in very close succescion. The 1/4 second delay
    in the make first contact loop is large enough to nearly always miss the
    ACTIVATING state change.

    Since either state indicates the remote partition has acknowledged our
    state change, accept either.

    Signed-off-by: Robin Holt
    Cc: Jack Steiner
    Cc: Ingo Molnar
    Signed-off-by: Andrew Morton
    Signed-off-by: Linus Torvalds

    Robin Holt
     
  • 15b87d67f   x86: uv: xpc NULL deref when mesq becomes empty ... Browse Code »

    Under heavy load conditions, our set of xpc messages may become exhausted.
    The code handles this correctly with the exception of the management code
    which hits a NULL pointer dereference.

    Signed-off-by: Robin Holt
    Cc: Jack Steiner
    Cc: Ingo Molnar
    Signed-off-by: Andrew Morton
    Signed-off-by: Linus Torvalds

    Robin Holt
     
  • c2c9f1157   x86: uv: update XPC to handle updated BIOS interface ... Browse Code »

    The UV BIOS has moved the location of some of their pointers to the
    "partition reserved page" from memory into a uv hub MMR. The GRU does not
    support bcopy operations from MMR space so we need to special case the MMR
    addresses using VLOAD operations.

    Additionally, the BIOS call for registering a message queue watchlist has
    removed the 'blade' value and eliminated the structure that was being
    passed in. This is also reflected in this patch.

    Signed-off-by: Robin Holt
    Cc: Jack Steiner
    Cc: Ingo Molnar
    Signed-off-by: Andrew Morton
    Signed-off-by: Linus Torvalds

    Robin Holt
     
  • 682128939   x86: uv: xpc needs to provide an abstraction for uv_gpa ... Browse Code »

    Provide an SGI SN2/UV agnositic method for converting a global physical
    address into a socket physical address.

    Signed-off-by: Robin Holt
    Cc: Jack Steiner
    Cc: Ingo Molnar
    Signed-off-by: Andrew Morton
    Signed-off-by: Linus Torvalds

    Robin Holt
     

08 Dec, 2009

1 commit

  • 1557d3300   Merge git://git.kernel.org/pub/scm/linux/kernel/git/ebiederm/sysctl-2.6 ... Browse Code »

    * git://git.kernel.org/pub/scm/linux/kernel/git/ebiederm/sysctl-2.6: (43 commits)
    security/tomoyo: Remove now unnecessary handling of security_sysctl.
    security/tomoyo: Add a special case to handle accesses through the internal proc mount.
    sysctl: Drop & in front of every proc_handler.
    sysctl: Remove CTL_NONE and CTL_UNNUMBERED
    sysctl: kill dead ctl_handler definitions.
    sysctl: Remove the last of the generic binary sysctl support
    sysctl net: Remove unused binary sysctl code
    sysctl security/tomoyo: Don't look at ctl_name
    sysctl arm: Remove binary sysctl support
    sysctl x86: Remove dead binary sysctl support
    sysctl sh: Remove dead binary sysctl support
    sysctl powerpc: Remove dead binary sysctl support
    sysctl ia64: Remove dead binary sysctl support
    sysctl s390: Remove dead sysctl binary support
    sysctl frv: Remove dead binary sysctl support
    sysctl mips/lasat: Remove dead binary sysctl support
    sysctl drivers: Remove dead binary sysctl support
    sysctl crypto: Remove dead binary sysctl support
    sysctl security/keys: Remove dead binary sysctl support
    sysctl kernel: Remove binary sysctl logic
    ...

    Linus Torvalds
     

19 Nov, 2009

1 commit

12 Nov, 2009

1 commit

14 Oct, 2009

1 commit

19 Sep, 2009

1 commit

  • fa877c71e   Merge branch 'release' of git://git.kernel.org/pub/scm/linux/kernel/git/aegl/linux-2.6 ... Browse Code »

    * 'release' of git://git.kernel.org/pub/scm/linux/kernel/git/aegl/linux-2.6:
    [IA64] Clean up linker script using standard macros.
    [IA64] Use standard macros for page-aligned data.
    [IA64] Use .ref.text, not .text.init for start_ap.
    [IA64] sgi-xp: fix printk format warnings
    [IA64] ioc4_serial: fix printk format warnings
    [IA64] mbcs: fix printk format warnings
    [IA64] pci_br, fix infinite loop in find_free_ate()
    [IA64] kdump: Short path to freeze CPUs
    [IA64] kdump: Try INIT regardless of
    [IA64] kdump: Mask INIT first in panic-kdump path
    [IA64] kdump: Don't return APs to SAL from kdump
    [IA64] kexec: Unregister MCA handler before kexec
    [IA64] kexec: Make INIT safe while transition to
    [IA64] kdump: Mask MCA/INIT on frozen cpus

    Fix up conflict in arch/ia64/kernel/vmlinux.lds.S as per Tony's
    suggestion.

    Linus Torvalds
     

15 Sep, 2009

1 commit

  • f509e34a5   [IA64] sgi-xp: fix printk format warnings ... Browse Code »

    Fix warnings in SGI XPC sn2 driver: lots of printk format warnings

    and:
    drivers/misc/sgi-xp/xpc_sn2.c: In function 'xpc_get_partition_rsvd_page_pa_sn2':
    drivers/misc/sgi-xp/xpc_sn2.c:618: warning: passing argument 3 of 'sn_partition_reserved_page_pa' from incompatible pointer type
    drivers/misc/sgi-xp/xpc_sn2.c:618: warning: passing argument 4 of 'sn_partition_reserved_page_pa' from incompatible pointer type

    (likely due to generic u64 / long long changes)

    Signed-off-by: Randy Dunlap
    Acked-by: Robin Holt
    Signed-off-by: Tony Luck

    Randy Dunlap
     

03 Sep, 2009

1 commit

13 Aug, 2009

1 commit

09 Jul, 2009

1 commit

  • ad361c988   Remove multiple KERN_ prefixes from printk formats ... Browse Code »

    Commit 5fd29d6ccbc98884569d6f3105aeca70858b3e0f ("printk: clean up
    handling of log-levels and newlines") changed printk semantics. printk
    lines with multiple KERN_ prefixes are no longer emitted as
    before the patch.

    is now included in the output on each additional use.

    Remove all uses of multiple KERN_s in formats.

    Signed-off-by: Joe Perches
    Signed-off-by: Linus Torvalds

    Joe Perches
     

06 Jul, 2009

1 commit

17 Jun, 2009

1 commit

  • 6484eb3e2   page allocator: do not check NUMA node ID when the caller knows the node is valid ... Browse Code »

    Callers of alloc_pages_node() can optionally specify -1 as a node to mean
    "allocate from the current node". However, a number of the callers in
    fast paths know for a fact their node is valid. To avoid a comparison and
    branch, this patch adds alloc_pages_exact_node() that only checks the nid
    with VM_BUG_ON(). Callers that know their node is valid are then
    converted.

    Signed-off-by: Mel Gorman
    Reviewed-by: Christoph Lameter
    Reviewed-by: KOSAKI Motohiro
    Reviewed-by: Pekka Enberg
    Acked-by: Paul Mundt [for the SLOB NUMA bits]
    Cc: Peter Zijlstra
    Cc: Nick Piggin
    Cc: Dave Hansen
    Cc: Lee Schermerhorn
    Signed-off-by: Andrew Morton
    Signed-off-by: Linus Torvalds

    Mel Gorman
     

13 Jun, 2009

1 commit

  • 3790c8cdb   net: fix network driver ndo_start_xmit() return values (part 1) ... Browse Code »

    Fix up drivers that return an errno value to qdisc_restart(), causing
    qdisc_restart() to print a warning and requeue/retransmit the skb.

    - xpnet: memory allocation error, intention is to drop
    - ethoc: oversized packet, packet must be dropped
    - ibmlana: skb freed: use after free
    - rrunner: skb freed: use after free

    Signed-off-by: Patrick McHardy
    Signed-off-by: David S. Miller

    Patrick McHardy
     

22 Apr, 2009

1 commit

  • e873cff0f   sgi-xp/sgi-gru: allow modules to load on non-uv systems ... Browse Code »

    For an upcoming distro release, we need to have the xp kernel module
    loadable even when not on UV equipment. The xpc module will not load.
    This will allow one set of modules dependent upon xp to work on either UV
    or non-UV equipment.

    Signed-off-by: Robin Holt
    Signed-off-by: Jack Steiner
    Cc: Ingo Molnar
    Signed-off-by: Andrew Morton
    Signed-off-by: Linus Torvalds

    Robin Holt
     

14 Apr, 2009

3 commits

  • a7665b0a3   sgi-xpc: clean up numerous globals ... Browse Code »

    Introduce xpc_arch_ops and eliminate numerous individual global definitions.

    Signed-off-by: Robin Holt
    Cc: Dean Nelson
    Signed-off-by: Andrew Morton
    Signed-off-by: Linus Torvalds

    Robin Holt
     
  • efdd06ed1   sgi-xpc: implement opencomplete messaging ... Browse Code »

    sgi-xpc has a window of failure where an open message can be sent and a
    subsequent data message can get lost. We have added a new message
    (opencomplete) which closes that window.

    Signed-off-by: Robin Holt
    Signed-off-by: Dean Nelson
    Signed-off-by: Andrew Morton
    Signed-off-by: Linus Torvalds

    Robin Holt
     
  • a374c57b0   sgi-xpc: prevent false heartbeat failures ... Browse Code »

    The heartbeat timeout functionality in sgi-xpc is currently not trained to
    the connection time. If a connection is made and the code is in the last
    polling window prior to doing a timeout, the next polling window will see
    the heartbeat as unchanged and initiate a no-heartbeat disconnect.

    Signed-off-by: Robin Holt
    Signed-off-by: Dean Nelson
    Signed-off-by: Andrew Morton
    Signed-off-by: Linus Torvalds

    Robin Holt
     

03 Apr, 2009

2 commits

11 Feb, 2009

1 commit

09 Feb, 2009

1 commit

06 Feb, 2009

1 commit

  • 361916a94   sgi-xp: fix writing past the end of kzalloc()'d space ... Browse Code »

    A missing type cast results in writing way beyond the end of a kzalloc()'d
    memory segment resulting in slab corruption. But it seems like the better
    solution is to define ->recv_msg_slots as a 'void *' rather than a
    'struct xpc_notify_mq_msg_uv *' and add the type cast.

    Signed-off-by: Dean Nelson
    Cc:
    Signed-off-by: Andrew Morton
    Signed-off-by: Linus Torvalds

    Dean Nelson
     

04 Feb, 2009

1 commit

31 Jan, 2009

1 commit

30 Jan, 2009

3 commits

21 Jan, 2009

2 commits