Eric Lee / smarc-fsl-linux-kernel

29 Jun, 2020

1 commit

  • 28ccce5f5   s390/appldata: use struct_size() helper ... Browse Code »

    Make use of the struct_size() helper instead of an open-coded version
    in order to avoid any potential type mistakes.

    This code was detected with the help of Coccinelle and, audited and
    fixed manually.

    Signed-off-by: Gustavo A. R. Silva
    Message-Id:
    Signed-off-by: Heiko Carstens

    Gustavo A. R. Silva
     

09 Jun, 2020

1 commit

  • 23fc02e36   Merge tag 's390-5.8-1' of git://git.kernel.org/pub/scm/linux/kernel/git/s390/linux ... Browse Code »

    Pull s390 updates from Vasily Gorbik:

    - Add support for multi-function devices in pci code.

    - Enable PF-VF linking for architectures using the pdev->no_vf_scan
    flag (currently just s390).

    - Add reipl from NVMe support.

    - Get rid of critical section cleanup in entry.S.

    - Refactor PNSO CHSC (perform network subchannel operation) in cio and
    qeth.

    - QDIO interrupts and error handling fixes and improvements, more
    refactoring changes.

    - Align ioremap() with generic code.

    - Accept requests without the prefetch bit set in vfio-ccw.

    - Enable path handling via two new regions in vfio-ccw.

    - Other small fixes and improvements all over the code.

    * tag 's390-5.8-1' of git://git.kernel.org/pub/scm/linux/kernel/git/s390/linux: (52 commits)
    vfio-ccw: make vfio_ccw_regops variables declarations static
    vfio-ccw: Add trace for CRW event
    vfio-ccw: Wire up the CRW irq and CRW region
    vfio-ccw: Introduce a new CRW region
    vfio-ccw: Refactor IRQ handlers
    vfio-ccw: Introduce a new schib region
    vfio-ccw: Refactor the unregister of the async regions
    vfio-ccw: Register a chp_event callback for vfio-ccw
    vfio-ccw: Introduce new helper functions to free/destroy regions
    vfio-ccw: document possible errors
    vfio-ccw: Enable transparent CCW IPL from DASD
    s390/pci: Log new handle in clp_disable_fh()
    s390/cio, s390/qeth: cleanup PNSO CHSC
    s390/qdio: remove q->first_to_kick
    s390/qdio: fix up qdio_start_irq() kerneldoc
    s390: remove critical section cleanup from entry.S
    s390: add machine check SIGP
    s390/pci: ioremap() align with generic code
    s390/ap: introduce new ap function ap_get_qdev()
    Documentation/s390: Update / remove developerWorks web links
    ...

    Linus Torvalds
     

20 May, 2020

1 commit

  • d03756aa0   Documentation/s390: Update / remove developerWorks web links ... Browse Code »

    s390 documentation now lives in IBM Knowledge Center, so update the link
    in the zfcpdump documentation.

    Also, remove the old developerWorks links from the appldata source code.
    Those were not really documentation related, but rather a reminder to the
    developer that some documentation has to be adjusted when changing the
    record layout, which should still be pretty obvious from the remaining
    comment.

    Signed-off-by: Gerald Schaefer
    Signed-off-by: Vasily Gorbik

    Gerald Schaefer
     

27 Apr, 2020

1 commit

  • 32927393d   sysctl: pass kernel pointers to ->proc_handler ... Browse Code »

    Instead of having all the sysctl handlers deal with user pointers, which
    is rather hairy in terms of the BPF interaction, copy the input to and
    from userspace in common code. This also means that the strings are
    always NUL-terminated by the common code, making the API a little bit
    safer.

    As most handler just pass through the data to one of the common handlers
    a lot of the changes are mechnical.

    Signed-off-by: Christoph Hellwig
    Acked-by: Andrey Ignatov
    Signed-off-by: Al Viro

    Christoph Hellwig
     

27 Feb, 2020

1 commit

  • fa226f1d8   s390: Replace zero-length array with flexible-array member ... Browse Code »

    The current codebase makes use of the zero-length array language
    extension to the C90 standard, but the preferred mechanism to declare
    variable-length types such as these ones is a flexible array member[1][2],
    introduced in C99:

    struct foo {
    int stuff;
    struct boo array[];
    };

    By making use of the mechanism above, we will get a compiler warning
    in case the flexible array does not occur last in the structure, which
    will help us prevent some kind of undefined behavior bugs from being
    inadvertently introduced[3] to the codebase from now on.

    Also, notice that, dynamic memory allocations won't be affected by
    this change:

    "Flexible array members have incomplete type, and so the sizeof operator
    may not be applied. As a quirk of the original implementation of
    zero-length arrays, sizeof evaluates to zero."[1]

    This issue was found with the help of Coccinelle.

    [1] https://gcc.gnu.org/onlinedocs/gcc/Zero-Length.html
    [2] https://github.com/KSPP/linux/issues/21
    [3] commit 76497732932f ("cxgb3/l2t: Fix undefined behaviour")

    Link: https://lkml.kernel.org/r/20200221150612.GA9717@embeddedor
    Signed-off-by: Gustavo A. R. Silva
    Signed-off-by: Vasily Gorbik

    Gustavo A. R. Silva
     

19 Jul, 2019

1 commit

  • eec4844fa   proc/sysctl: add shared variables for range check ... Browse Code »

    In the sysctl code the proc_dointvec_minmax() function is often used to
    validate the user supplied value between an allowed range. This
    function uses the extra1 and extra2 members from struct ctl_table as
    minimum and maximum allowed value.

    On sysctl handler declaration, in every source file there are some
    readonly variables containing just an integer which address is assigned
    to the extra1 and extra2 members, so the sysctl range is enforced.

    The special values 0, 1 and INT_MAX are very often used as range
    boundary, leading duplication of variables like zero=0, one=1,
    int_max=INT_MAX in different source files:

    $ git grep -E '\.extra[12].*&(zero|one|int_max)' |wc -l
    248

    Add a const int array containing the most commonly used values, some
    macros to refer more easily to the correct array member, and use them
    instead of creating a local one for every object file.

    This is the bloat-o-meter output comparing the old and new binary
    compiled with the default Fedora config:

    # scripts/bloat-o-meter -d vmlinux.o.old vmlinux.o
    add/remove: 2/2 grow/shrink: 0/2 up/down: 24/-188 (-164)
    Data old new delta
    sysctl_vals - 12 +12
    __kstrtab_sysctl_vals - 12 +12
    max 14 10 -4
    int_max 16 - -16
    one 68 - -68
    zero 128 28 -100
    Total: Before=20583249, After=20583085, chg -0.00%

    [mcroce@redhat.com: tipc: remove two unused variables]
    Link: http://lkml.kernel.org/r/20190530091952.4108-1-mcroce@redhat.com
    [akpm@linux-foundation.org: fix net/ipv6/sysctl_net_ipv6.c]
    [arnd@arndb.de: proc/sysctl: make firmware loader table conditional]
    Link: http://lkml.kernel.org/r/20190617130014.1713870-1-arnd@arndb.de
    [akpm@linux-foundation.org: fix fs/eventpoll.c]
    Link: http://lkml.kernel.org/r/20190430180111.10688-1-mcroce@redhat.com
    Signed-off-by: Matteo Croce
    Signed-off-by: Arnd Bergmann
    Acked-by: Kees Cook
    Reviewed-by: Aaron Tomlin
    Cc: Matthew Wilcox
    Cc: Stephen Rothwell
    Signed-off-by: Andrew Morton
    Signed-off-by: Linus Torvalds

    Matteo Croce
     

27 Oct, 2018

1 commit

  • 8508cf3ff   sched: loadavg: consolidate LOAD_INT, LOAD_FRAC, CALC_LOAD ... Browse Code »

    There are several definitions of those functions/macros in places that
    mess with fixed-point load averages. Provide an official version.

    [akpm@linux-foundation.org: fix missed conversion in block/blk-iolatency.c]
    Link: http://lkml.kernel.org/r/20180828172258.3185-5-hannes@cmpxchg.org
    Signed-off-by: Johannes Weiner
    Acked-by: Peter Zijlstra (Intel)
    Tested-by: Suren Baghdasaryan
    Tested-by: Daniel Drake
    Cc: Christopher Lameter
    Cc: Ingo Molnar
    Cc: Johannes Weiner
    Cc: Mike Galbraith
    Cc: Peter Enderborg
    Cc: Randy Dunlap
    Cc: Shakeel Butt
    Cc: Tejun Heo
    Cc: Vinayak Menon
    Signed-off-by: Andrew Morton
    Signed-off-by: Linus Torvalds

    Johannes Weiner
     

09 Oct, 2018

2 commits

06 Jul, 2018

1 commit

02 Jul, 2018

1 commit

  • f6ea4d25e   s390: fix gcc 8 stringop-truncation warnings in proc handlers ... Browse Code »

    arch/s390/kernel/topology.c:591:3: warning: 'strncpy' output truncated
    before terminating nul copying 2 bytes from a string of the same length
    [-Wstringop-truncation]
    strncpy(buf, topology_is_enabled() ? "1\n" : "0\n", ARRAY_SIZE(buf));

    arch/s390/appldata/appldata_base.c:326:3: warning: 'strncpy' output truncated
    before terminating nul copying 2 bytes from a string of the same length
    [-Wstringop-truncation]
    strncpy(buf, ops->active ? "1\n" : "0\n", ARRAY_SIZE(buf));

    arch/s390/appldata/appldata_base.c:217:3: warning: 'strncpy' output truncated
    before terminating nul copying 2 bytes from a string of the same length
    [-Wstringop-truncation]
    strncpy(buf, appldata_timer_active ? "1\n" : "0\n", ARRAY_SIZE(buf));

    To avoid the warning, just reuse memcpy.

    Reviewed-by: Heiko Carstens
    Signed-off-by: Vasily Gorbik
    Signed-off-by: Martin Schwidefsky

    Vasily Gorbik
     

13 Jun, 2018

1 commit

  • 6396bb221   treewide: kzalloc() -> kcalloc() ... Browse Code »

    The kzalloc() function has a 2-factor argument form, kcalloc(). This
    patch replaces cases of:

    kzalloc(a * b, gfp)

    with:
    kcalloc(a * b, gfp)

    as well as handling cases of:

    kzalloc(a * b * c, gfp)

    with:

    kzalloc(array3_size(a, b, c), gfp)

    as it's slightly less ugly than:

    kzalloc_array(array_size(a, b), c, gfp)

    This does, however, attempt to ignore constant size factors like:

    kzalloc(4 * 1024, gfp)

    though any constants defined via macros get caught up in the conversion.

    Any factors with a sizeof() of "unsigned char", "char", and "u8" were
    dropped, since they're redundant.

    The Coccinelle script used for this was:

    // Fix redundant parens around sizeof().
    @@
    type TYPE;
    expression THING, E;
    @@

    (
    kzalloc(
    - (sizeof(TYPE)) * E
    + sizeof(TYPE) * E
    , ...)
    |
    kzalloc(
    - (sizeof(THING)) * E
    + sizeof(THING) * E
    , ...)
    )

    // Drop single-byte sizes and redundant parens.
    @@
    expression COUNT;
    typedef u8;
    typedef __u8;
    @@

    (
    kzalloc(
    - sizeof(u8) * (COUNT)
    + COUNT
    , ...)
    |
    kzalloc(
    - sizeof(__u8) * (COUNT)
    + COUNT
    , ...)
    |
    kzalloc(
    - sizeof(char) * (COUNT)
    + COUNT
    , ...)
    |
    kzalloc(
    - sizeof(unsigned char) * (COUNT)
    + COUNT
    , ...)
    |
    kzalloc(
    - sizeof(u8) * COUNT
    + COUNT
    , ...)
    |
    kzalloc(
    - sizeof(__u8) * COUNT
    + COUNT
    , ...)
    |
    kzalloc(
    - sizeof(char) * COUNT
    + COUNT
    , ...)
    |
    kzalloc(
    - sizeof(unsigned char) * COUNT
    + COUNT
    , ...)
    )

    // 2-factor product with sizeof(type/expression) and identifier or constant.
    @@
    type TYPE;
    expression THING;
    identifier COUNT_ID;
    constant COUNT_CONST;
    @@

    (
    - kzalloc
    + kcalloc
    (
    - sizeof(TYPE) * (COUNT_ID)
    + COUNT_ID, sizeof(TYPE)
    , ...)
    |
    - kzalloc
    + kcalloc
    (
    - sizeof(TYPE) * COUNT_ID
    + COUNT_ID, sizeof(TYPE)
    , ...)
    |
    - kzalloc
    + kcalloc
    (
    - sizeof(TYPE) * (COUNT_CONST)
    + COUNT_CONST, sizeof(TYPE)
    , ...)
    |
    - kzalloc
    + kcalloc
    (
    - sizeof(TYPE) * COUNT_CONST
    + COUNT_CONST, sizeof(TYPE)
    , ...)
    |
    - kzalloc
    + kcalloc
    (
    - sizeof(THING) * (COUNT_ID)
    + COUNT_ID, sizeof(THING)
    , ...)
    |
    - kzalloc
    + kcalloc
    (
    - sizeof(THING) * COUNT_ID
    + COUNT_ID, sizeof(THING)
    , ...)
    |
    - kzalloc
    + kcalloc
    (
    - sizeof(THING) * (COUNT_CONST)
    + COUNT_CONST, sizeof(THING)
    , ...)
    |
    - kzalloc
    + kcalloc
    (
    - sizeof(THING) * COUNT_CONST
    + COUNT_CONST, sizeof(THING)
    , ...)
    )

    // 2-factor product, only identifiers.
    @@
    identifier SIZE, COUNT;
    @@

    - kzalloc
    + kcalloc
    (
    - SIZE * COUNT
    + COUNT, SIZE
    , ...)

    // 3-factor product with 1 sizeof(type) or sizeof(expression), with
    // redundant parens removed.
    @@
    expression THING;
    identifier STRIDE, COUNT;
    type TYPE;
    @@

    (
    kzalloc(
    - sizeof(TYPE) * (COUNT) * (STRIDE)
    + array3_size(COUNT, STRIDE, sizeof(TYPE))
    , ...)
    |
    kzalloc(
    - sizeof(TYPE) * (COUNT) * STRIDE
    + array3_size(COUNT, STRIDE, sizeof(TYPE))
    , ...)
    |
    kzalloc(
    - sizeof(TYPE) * COUNT * (STRIDE)
    + array3_size(COUNT, STRIDE, sizeof(TYPE))
    , ...)
    |
    kzalloc(
    - sizeof(TYPE) * COUNT * STRIDE
    + array3_size(COUNT, STRIDE, sizeof(TYPE))
    , ...)
    |
    kzalloc(
    - sizeof(THING) * (COUNT) * (STRIDE)
    + array3_size(COUNT, STRIDE, sizeof(THING))
    , ...)
    |
    kzalloc(
    - sizeof(THING) * (COUNT) * STRIDE
    + array3_size(COUNT, STRIDE, sizeof(THING))
    , ...)
    |
    kzalloc(
    - sizeof(THING) * COUNT * (STRIDE)
    + array3_size(COUNT, STRIDE, sizeof(THING))
    , ...)
    |
    kzalloc(
    - sizeof(THING) * COUNT * STRIDE
    + array3_size(COUNT, STRIDE, sizeof(THING))
    , ...)
    )

    // 3-factor product with 2 sizeof(variable), with redundant parens removed.
    @@
    expression THING1, THING2;
    identifier COUNT;
    type TYPE1, TYPE2;
    @@

    (
    kzalloc(
    - sizeof(TYPE1) * sizeof(TYPE2) * COUNT
    + array3_size(COUNT, sizeof(TYPE1), sizeof(TYPE2))
    , ...)
    |
    kzalloc(
    - sizeof(TYPE1) * sizeof(THING2) * (COUNT)
    + array3_size(COUNT, sizeof(TYPE1), sizeof(TYPE2))
    , ...)
    |
    kzalloc(
    - sizeof(THING1) * sizeof(THING2) * COUNT
    + array3_size(COUNT, sizeof(THING1), sizeof(THING2))
    , ...)
    |
    kzalloc(
    - sizeof(THING1) * sizeof(THING2) * (COUNT)
    + array3_size(COUNT, sizeof(THING1), sizeof(THING2))
    , ...)
    |
    kzalloc(
    - sizeof(TYPE1) * sizeof(THING2) * COUNT
    + array3_size(COUNT, sizeof(TYPE1), sizeof(THING2))
    , ...)
    |
    kzalloc(
    - sizeof(TYPE1) * sizeof(THING2) * (COUNT)
    + array3_size(COUNT, sizeof(TYPE1), sizeof(THING2))
    , ...)
    )

    // 3-factor product, only identifiers, with redundant parens removed.
    @@
    identifier STRIDE, SIZE, COUNT;
    @@

    (
    kzalloc(
    - (COUNT) * STRIDE * SIZE
    + array3_size(COUNT, STRIDE, SIZE)
    , ...)
    |
    kzalloc(
    - COUNT * (STRIDE) * SIZE
    + array3_size(COUNT, STRIDE, SIZE)
    , ...)
    |
    kzalloc(
    - COUNT * STRIDE * (SIZE)
    + array3_size(COUNT, STRIDE, SIZE)
    , ...)
    |
    kzalloc(
    - (COUNT) * (STRIDE) * SIZE
    + array3_size(COUNT, STRIDE, SIZE)
    , ...)
    |
    kzalloc(
    - COUNT * (STRIDE) * (SIZE)
    + array3_size(COUNT, STRIDE, SIZE)
    , ...)
    |
    kzalloc(
    - (COUNT) * STRIDE * (SIZE)
    + array3_size(COUNT, STRIDE, SIZE)
    , ...)
    |
    kzalloc(
    - (COUNT) * (STRIDE) * (SIZE)
    + array3_size(COUNT, STRIDE, SIZE)
    , ...)
    |
    kzalloc(
    - COUNT * STRIDE * SIZE
    + array3_size(COUNT, STRIDE, SIZE)
    , ...)
    )

    // Any remaining multi-factor products, first at least 3-factor products,
    // when they're not all constants...
    @@
    expression E1, E2, E3;
    constant C1, C2, C3;
    @@

    (
    kzalloc(C1 * C2 * C3, ...)
    |
    kzalloc(
    - (E1) * E2 * E3
    + array3_size(E1, E2, E3)
    , ...)
    |
    kzalloc(
    - (E1) * (E2) * E3
    + array3_size(E1, E2, E3)
    , ...)
    |
    kzalloc(
    - (E1) * (E2) * (E3)
    + array3_size(E1, E2, E3)
    , ...)
    |
    kzalloc(
    - E1 * E2 * E3
    + array3_size(E1, E2, E3)
    , ...)
    )

    // And then all remaining 2 factors products when they're not all constants,
    // keeping sizeof() as the second factor argument.
    @@
    expression THING, E1, E2;
    type TYPE;
    constant C1, C2, C3;
    @@

    (
    kzalloc(sizeof(THING) * C2, ...)
    |
    kzalloc(sizeof(TYPE) * C2, ...)
    |
    kzalloc(C1 * C2 * C3, ...)
    |
    kzalloc(C1 * C2, ...)
    |
    - kzalloc
    + kcalloc
    (
    - sizeof(TYPE) * (E2)
    + E2, sizeof(TYPE)
    , ...)
    |
    - kzalloc
    + kcalloc
    (
    - sizeof(TYPE) * E2
    + E2, sizeof(TYPE)
    , ...)
    |
    - kzalloc
    + kcalloc
    (
    - sizeof(THING) * (E2)
    + E2, sizeof(THING)
    , ...)
    |
    - kzalloc
    + kcalloc
    (
    - sizeof(THING) * E2
    + E2, sizeof(THING)
    , ...)
    |
    - kzalloc
    + kcalloc
    (
    - (E1) * E2
    + E1, E2
    , ...)
    |
    - kzalloc
    + kcalloc
    (
    - (E1) * (E2)
    + E1, E2
    , ...)
    |
    - kzalloc
    + kcalloc
    (
    - E1 * E2
    + E1, E2
    , ...)
    )

    Signed-off-by: Kees Cook

    Kees Cook
     

05 Dec, 2017

1 commit

  • 9fa1db4c7   s390: add a few more SPDX identifiers ... Browse Code »

    Add the correct SPDX license to a few more files under arch/s390 and
    drivers/s390 which have been missed to far.
    The SPDX identifier is a legally binding shorthand, which can be used
    instead of the full boiler plate text.

    Signed-off-by: Martin Schwidefsky

    Martin Schwidefsky
     

24 Nov, 2017

1 commit

  • 0caa8cdf1   s390: appldata: add SPDX identifiers to the remaining files ... Browse Code »

    It's good to have SPDX identifiers in all files to make it easier to
    audit the kernel tree for correct licenses.

    Update the arch/s390/appldata/ files with the correct SPDX license
    identifier based on the license text in the file itself. The SPDX
    identifier is a legally binding shorthand, which can be used instead of
    the full boiler plate text.

    This work is based on a script and data from Thomas Gleixner, Philippe
    Ombredanne, and Kate Stewart.

    Cc: Martin Schwidefsky
    Cc: Heiko Carstens
    Cc: Thomas Gleixner
    Cc: Kate Stewart
    Cc: Philippe Ombredanne
    Signed-off-by: Greg Kroah-Hartman
    Signed-off-by: Martin Schwidefsky

    Greg Kroah-Hartman
     

02 Nov, 2017

1 commit

  • b24413180   License cleanup: add SPDX GPL-2.0 license identifier to files with no license ... Browse Code »

    Many source files in the tree are missing licensing information, which
    makes it harder for compliance tools to determine the correct license.

    By default all files without license information are under the default
    license of the kernel, which is GPL version 2.

    Update the files which contain no license information with the 'GPL-2.0'
    SPDX license identifier. The SPDX identifier is a legally binding
    shorthand, which can be used instead of the full boiler plate text.

    This patch is based on work done by Thomas Gleixner and Kate Stewart and
    Philippe Ombredanne.

    How this work was done:

    Patches were generated and checked against linux-4.14-rc6 for a subset of
    the use cases:
    - file had no licensing information it it.
    - file was a */uapi/* one with no licensing information in it,
    - file was a */uapi/* one with existing licensing information,

    Further patches will be generated in subsequent months to fix up cases
    where non-standard license headers were used, and references to license
    had to be inferred by heuristics based on keywords.

    The analysis to determine which SPDX License Identifier to be applied to
    a file was done in a spreadsheet of side by side results from of the
    output of two independent scanners (ScanCode & Windriver) producing SPDX
    tag:value files created by Philippe Ombredanne. Philippe prepared the
    base worksheet, and did an initial spot review of a few 1000 files.

    The 4.13 kernel was the starting point of the analysis with 60,537 files
    assessed. Kate Stewart did a file by file comparison of the scanner
    results in the spreadsheet to determine which SPDX license identifier(s)
    to be applied to the file. She confirmed any determination that was not
    immediately clear with lawyers working with the Linux Foundation.

    Criteria used to select files for SPDX license identifier tagging was:
    - Files considered eligible had to be source code files.
    - Make and config files were included as candidates if they contained >5
    lines of source
    - File already had some variant of a license header in it (even if
    Reviewed-by: Philippe Ombredanne
    Reviewed-by: Thomas Gleixner
    Signed-off-by: Greg Kroah-Hartman

    Greg Kroah-Hartman
     

03 Mar, 2017

1 commit

02 Mar, 2017

2 commits

01 Feb, 2017

1 commit

  • 7fb1327ee   sched/cputime: Convert kcpustat to nsecs ... Browse Code »

    Kernel CPU stats are stored in cputime_t which is an architecture
    defined type, and hence a bit opaque and requiring accessors and mutators
    for any operation.

    Converting them to nsecs simplifies the code and is one step toward
    the removal of cputime_t in the core code.

    Signed-off-by: Frederic Weisbecker
    Cc: Benjamin Herrenschmidt
    Cc: Paul Mackerras
    Cc: Michael Ellerman
    Cc: Heiko Carstens
    Cc: Martin Schwidefsky
    Cc: Tony Luck
    Cc: Fenghua Yu
    Cc: Peter Zijlstra
    Cc: Rik van Riel
    Cc: Stanislaw Gruszka
    Cc: Wanpeng Li
    Link: http://lkml.kernel.org/r/1485832191-26889-4-git-send-email-fweisbec@gmail.com
    Signed-off-by: Ingo Molnar

    Frederic Weisbecker
     

25 Dec, 2016

1 commit

06 Sep, 2016

1 commit

  • e68f1d4ca   s390: Remove deprecated create_singlethread_workqueue ... Browse Code »

    The workqueue "appldata_wq" has been replaced with an ordered dedicated
    workqueue.

    WQ_MEM_RECLAIM has not been set since the workqueue is not being used on
    a memory reclaim path.

    The adapter->work_queue queues multiple work items viz
    &adapter->scan_work, &port->rport_work, &adapter->ns_up_work,
    &adapter->stat_work, adapter->work_queue, &adapter->events.work,
    &port->gid_pn_work, &port->test_link_work. Hence, an ordered
    dedicated workqueue has been used.

    WQ_MEM_RECLAIM has been set to ensure forward progress under memory
    pressure.

    Signed-off-by: Bhaktipriya Shridhar
    Signed-off-by: Heiko Carstens
    Signed-off-by: Martin Schwidefsky

    Bhaktipriya Shridhar
     

29 Jul, 2016

1 commit

  • 11fb99898   mm: move most file-based accounting to the node ... Browse Code »

    There are now a number of accounting oddities such as mapped file pages
    being accounted for on the node while the total number of file pages are
    accounted on the zone. This can be coped with to some extent but it's
    confusing so this patch moves the relevant file-based accounted. Due to
    throttling logic in the page allocator for reliable OOM detection, it is
    still necessary to track dirty and writeback pages on a per-zone basis.

    [mgorman@techsingularity.net: fix NR_ZONE_WRITE_PENDING accounting]
    Link: http://lkml.kernel.org/r/1468404004-5085-5-git-send-email-mgorman@techsingularity.net
    Link: http://lkml.kernel.org/r/1467970510-21195-20-git-send-email-mgorman@techsingularity.net
    Signed-off-by: Mel Gorman
    Acked-by: Vlastimil Babka
    Acked-by: Michal Hocko
    Cc: Hillf Danton
    Acked-by: Johannes Weiner
    Cc: Joonsoo Kim
    Cc: Minchan Kim
    Cc: Rik van Riel
    Signed-off-by: Andrew Morton
    Signed-off-by: Linus Torvalds

    Mel Gorman
     

20 Oct, 2014

1 commit

20 May, 2014

1 commit

  • f1a858206   s390/appldata: add slab.h for kzalloc/kfree ... Browse Code »

    This fixes:
    arch/s390/appldata/appldata_mem.c:135:2: error: implicit declaration of function 'kzalloc' [-Werror=implicit-function-declaration]
    arch/s390/appldata/appldata_mem.c:141:3: error: implicit declaration of function 'kfree' [-Werror=implicit-function-declaration]

    Signed-off-by: Jeff Mahoney
    Signed-off-by: Heiko Carstens
    Signed-off-by: Martin Schwidefsky

    Jeff Mahoney
     

07 Mar, 2014

1 commit

  • 6967037ba   s390/appldata_os: fix cpu array size calculation ... Browse Code »

    The cpu array size calculation uses the NR_CPUS config option, which
    was recently increased from 64 to 256. With a value of 256, the cpu
    array will no longer fit into one APPLDATA record and loading the
    appldata_os module fails with the following error:
    could not insert 'appldata_os': Cannot allocate memory

    Use num_possible_cpus() instead of NR_CPUS. For z/VM, this will still
    result in a value of 64. This is not true for LPAR, but the appldata
    feature is not available for LPAR.

    Signed-off-by: Gerald Schaefer
    Signed-off-by: Martin Schwidefsky

    Gerald Schaefer
     

29 Jan, 2014

1 commit

28 Oct, 2013

1 commit

24 Oct, 2013

1 commit

  • 57f47ba0c   s390/appldata: make copy_from_user() invocations provably correct ... Browse Code »

    Just change the type of "len" to unsigned int so the compiler can prove
    that we don't have a buffer overflow (and generates less code).
    We get rid of these:

    In function 'copy_from_user',
    inlined from 'appldata_interval_handler' at
    arch/s390/appldata/appldata_base.c:265:
    uaccess.h:303: warning: call to 'copy_from_user_overflow' declared
    with attribute warning: copy_from_user() buffer size is not provably
    correct
    In function 'copy_from_user',
    inlined from 'appldata_timer_handler' at
    arch/s390/appldata/appldata_base.c:225:
    uaccess.h:303: warning: call to 'copy_from_user_overflow' declared
    with attribute warning: copy_from_user() buffer size is not provably
    correct
    In function 'copy_from_user',
    inlined from 'appldata_generic_handler' at
    arch/s390/appldata/appldata_base.c:333:
    uaccess.h:303: warning: call to 'copy_from_user_overflow' declared
    with attribute warning: copy_from_user() buffer size is not provably
    correct

    Signed-off-by: Heiko Carstens
    Signed-off-by: Martin Schwidefsky

    Heiko Carstens
     

27 Jun, 2013

2 commits

  • 2ab146192   s390/appldata_net_sum: do not use static data ... Browse Code »

    Using static data for fields which are accessed by HW will fail if
    the driver is build as a module (since this would be vmalloc'ed
    memory). This Bug was revealed via
    "s390: remove virt_to_phys implementation" - the old virt_to_phys
    implementation would have translated the address but it was not
    guaranteed that the memory was contiguous.

    Signed-off-by: Sebastian Ott
    Reviewed-by: Gerald Schaefer
    Signed-off-by: Martin Schwidefsky

    Sebastian Ott
     
  • a94f0fb1a   s390/appldata_mem: do not use static data ... Browse Code »

    Using static data for fields which are accessed by HW will fail if
    the driver is build as a module (since this would be vmalloc'ed
    memory). This Bug was revealed via
    "s390: remove virt_to_phys implementation" - the old virt_to_phys
    implementation would have translated the address but it was not
    guaranteed that the memory was contiguous.

    Signed-off-by: Sebastian Ott
    Reviewed-by: Gerald Schaefer
    Signed-off-by: Martin Schwidefsky

    Sebastian Ott
     

28 May, 2013

1 commit

14 Feb, 2013

1 commit

20 Jul, 2012

2 commits

  • 27f6b4166   s390/vtimer: rework virtual timer interface ... Browse Code »

    The current virtual timer interface is inherently per-cpu and hard to
    use. The sole user of the interface is appldata which uses it to execute
    a function after a specific amount of cputime has been used over all cpus.

    Rework the virtual timer interface to hook into the cputime accounting.
    This makes the interface independent from the CPU timer interrupts, and
    makes the virtual timers global as opposed to per-cpu.
    Overall the code is greatly simplified. The downside is that the accuracy
    is not as good as the original implementation, but it is still good enough
    for appldata.

    Reviewed-by: Jan Glauber
    Reviewed-by: Heiko Carstens
    Signed-off-by: Martin Schwidefsky

    Martin Schwidefsky
     
  • a53c8fab3   s390/comments: unify copyright messages and remove file names ... Browse Code »

    Remove the file name from the comment at top of many files. In most
    cases the file name was wrong anyway, so it's rather pointless.

    Also unify the IBM copyright statement. We did have a lot of sightly
    different statements and wanted to change them one after another
    whenever a file gets touched. However that never happened. Instead
    people start to take the old/"wrong" statements to use as a template
    for new files.
    So unify all of them in one go.

    Signed-off-by: Heiko Carstens

    Heiko Carstens
     

06 Dec, 2011

1 commit

  • 3292beb34   sched/accounting: Change cpustat fields to an array ... Browse Code »
    43

    This patch changes fields in cpustat from a structure, to an
    u64 array. Math gets easier, and the code is more flexible.

    Signed-off-by: Glauber Costa
    Reviewed-by: KAMEZAWA Hiroyuki
    Cc: Linus Torvalds
    Cc: Andrew Morton
    Cc: Paul Tuner
    Signed-off-by: Peter Zijlstra
    Link: http://lkml.kernel.org/r/1322498719-2255-2-git-send-email-glommer@parallels.com
    Signed-off-by: Ingo Molnar

    Glauber Costa
     

26 May, 2011

1 commit

23 May, 2011

1 commit

13 Aug, 2010

1 commit

  • e402e38c6   [S390] appldata: fix dev_get_stats 64 bit conversion ... Browse Code »

    Fix this warning:

    arch/s390/appldata/appldata_net_sum.c: In function 'appldata_get_net_sum_data':
    arch/s390/appldata/appldata_net_sum.c:89: warning: initialization from incompatible pointer type

    which was introduced with be1f3c2c027cc5ad735df6a45a542ed1db7ec48b
    "net: Enable 64-bit net device statistics on 32-bit architectures"

    Signed-off-by: Heiko Carstens
    Signed-off-by: Martin Schwidefsky

    Heiko Carstens
     

05 Aug, 2010

1 commit

  • 6ba74014c   Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-next-2.6 ... Browse Code »

    * git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-next-2.6: (1443 commits)
    phy/marvell: add 88ec048 support
    igb: Program MDICNFG register prior to PHY init
    e1000e: correct MAC-PHY interconnect register offset for 82579
    hso: Add new product ID
    can: Add driver for esd CAN-USB/2 device
    l2tp: fix export of header file for userspace
    can-raw: Fix skb_orphan_try handling
    Revert "net: remove zap_completion_queue"
    net: cleanup inclusion
    phy/marvell: add 88e1121 interface mode support
    u32: negative offset fix
    net: Fix a typo from "dev" to "ndev"
    igb: Use irq_synchronize per vector when using MSI-X
    ixgbevf: fix null pointer dereference due to filter being set for VLAN 0
    e1000e: Fix irq_synchronize in MSI-X case
    e1000e: register pm_qos request on hardware activation
    ip_fragment: fix subtracting PPPOE_SES_HLEN from mtu twice
    net: Add getsockopt support for TCP thin-streams
    cxgb4: update driver version
    cxgb4: add new PCI IDs
    ...

    Manually fix up conflicts in:
    - drivers/net/e1000e/netdev.c: due to pm_qos registration
    infrastructure changes
    - drivers/net/phy/marvell.c: conflict between adding 88ec048 support
    and cleaning up the IDs
    - drivers/net/wireless/ipw2x00/ipw2100.c: trivial ipw2100_pm_qos_req
    conflict (registration change vs marking it static)

    Linus Torvalds
     

08 Jul, 2010

1 commit

  • 28172739f   net: fix 64 bit counters on 32 bit arches ... Browse Code »

    There is a small possibility that a reader gets incorrect values on 32
    bit arches. SNMP applications could catch incorrect counters when a
    32bit high part is changed by another stats consumer/provider.

    One way to solve this is to add a rtnl_link_stats64 param to all
    ndo_get_stats64() methods, and also add such a parameter to
    dev_get_stats().

    Rule is that we are not allowed to use dev->stats64 as a temporary
    storage for 64bit stats, but a caller provided area (usually on stack)

    Old drivers (only providing get_stats() method) need no changes.

    Signed-off-by: Eric Dumazet
    Signed-off-by: David S. Miller

    Eric Dumazet