Eric Lee / smarc-fsl-linux-kernel

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
     

09 Sep, 2017

1 commit

  • 4c97a0c8f   arch: define CPU_BIG_ENDIAN for all fixed big endian archs ... Browse Code »

    Patch series "Define CPU_BIG_ENDIAN or warn for inconsistencies", v3.

    While working on enabling queued rwlock on SPARC, found this following
    code in include/asm-generic/qrwlock.h which uses CONFIG_CPU_BIG_ENDIAN to
    clear a byte.

    static inline u8 *__qrwlock_write_byte(struct qrwlock *lock)
    {
    return (u8 *)lock + 3 * IS_BUILTIN(CONFIG_CPU_BIG_ENDIAN);
    }

    Problem is many of the fixed big endian architectures don't define
    CPU_BIG_ENDIAN and clears the wrong byte.

    Define CPU_BIG_ENDIAN for all the fixed big endian architecture to fix it.

    Also found few more references of this config parameter in
    drivers/of/base.c
    drivers/of/fdt.c
    drivers/tty/serial/earlycon.c
    drivers/tty/serial/serial_core.c
    Be aware that this may cause regressions if someone has worked-around
    problems in the above code already. Remove the work-around.

    Here is our original discussion
    https://lkml.org/lkml/2017/5/24/620

    Link: http://lkml.kernel.org/r/1499358861-179979-2-git-send-email-babu.moger@oracle.com
    Signed-off-by: Babu Moger
    Suggested-by: Arnd Bergmann
    Acked-by: Geert Uytterhoeven
    Acked-by: David S. Miller
    Acked-by: Stafford Horne
    Cc: Yoshinori Sato
    Cc: Jonas Bonn
    Cc: Stefan Kristiansson
    Cc: "James E.J. Bottomley"
    Cc: Helge Deller
    Cc: Alexander Viro
    Cc: Michal Simek
    Cc: Michael Ellerman (powerpc)
    Cc: Peter Zijlstra
    Cc: Ingo Molnar
    Cc: Max Filippov
    Cc: Greg KH
    Signed-off-by: Andrew Morton
    Signed-off-by: Linus Torvalds

    Babu Moger
     

06 Feb, 2017

1 commit

12 Dec, 2016

2 commits

08 Jun, 2016

1 commit

21 May, 2016

1 commit

  • fff7fb0b2   lib/GCD.c: use binary GCD algorithm instead of Euclidean ... Browse Code »

    The binary GCD algorithm is based on the following facts:
    1. If a and b are all evens, then gcd(a,b) = 2 * gcd(a/2, b/2)
    2. If a is even and b is odd, then gcd(a,b) = gcd(a/2, b)
    3. If a and b are all odds, then gcd(a,b) = gcd((a-b)/2, b) = gcd((a+b)/2, b)

    Even on x86 machines with reasonable division hardware, the binary
    algorithm runs about 25% faster (80% the execution time) than the
    division-based Euclidian algorithm.

    On platforms like Alpha and ARMv6 where division is a function call to
    emulation code, it's even more significant.

    There are two variants of the code here, depending on whether a fast
    __ffs (find least significant set bit) instruction is available. This
    allows the unpredictable branches in the bit-at-a-time shifting loop to
    be eliminated.

    If fast __ffs is not available, the "even/odd" GCD variant is used.

    I use the following code to benchmark:

    #include
    #include
    #include
    #include
    #include
    #include

    #define swap(a, b) \
    do { \
    a ^= b; \
    b ^= a; \
    a ^= b; \
    } while (0)

    unsigned long gcd0(unsigned long a, unsigned long b)
    {
    unsigned long r;

    if (a < b) {
    swap(a, b);
    }

    if (b == 0)
    return a;

    while ((r = a % b) != 0) {
    a = b;
    b = r;
    }

    return b;
    }

    unsigned long gcd1(unsigned long a, unsigned long b)
    {
    unsigned long r = a | b;

    if (!a || !b)
    return r;

    b >>= __builtin_ctzl(b);

    for (;;) {
    a >>= __builtin_ctzl(a);
    if (a == b)
    return a << __builtin_ctzl(r);

    if (a < b)
    swap(a, b);
    a -= b;
    }
    }

    unsigned long gcd2(unsigned long a, unsigned long b)
    {
    unsigned long r = a | b;

    if (!a || !b)
    return r;

    r &= -r;

    while (!(b & r))
    b >>= 1;

    for (;;) {
    while (!(a & r))
    a >>= 1;
    if (a == b)
    return a;

    if (a < b)
    swap(a, b);
    a -= b;
    a >>= 1;
    if (a & r)
    a += b;
    a >>= 1;
    }
    }

    unsigned long gcd3(unsigned long a, unsigned long b)
    {
    unsigned long r = a | b;

    if (!a || !b)
    return r;

    b >>= __builtin_ctzl(b);
    if (b == 1)
    return r & -r;

    for (;;) {
    a >>= __builtin_ctzl(a);
    if (a == 1)
    return r & -r;
    if (a == b)
    return a << __builtin_ctzl(r);

    if (a < b)
    swap(a, b);
    a -= b;
    }
    }

    unsigned long gcd4(unsigned long a, unsigned long b)
    {
    unsigned long r = a | b;

    if (!a || !b)
    return r;

    r &= -r;

    while (!(b & r))
    b >>= 1;
    if (b == r)
    return r;

    for (;;) {
    while (!(a & r))
    a >>= 1;
    if (a == r)
    return r;
    if (a == b)
    return a;

    if (a < b)
    swap(a, b);
    a -= b;
    a >>= 1;
    if (a & r)
    a += b;
    a >>= 1;
    }
    }

    static unsigned long (*gcd_func[])(unsigned long a, unsigned long b) = {
    gcd0, gcd1, gcd2, gcd3, gcd4,
    };

    #define TEST_ENTRIES (sizeof(gcd_func) / sizeof(gcd_func[0]))

    #if defined(__x86_64__)

    #define rdtscll(val) do { \
    unsigned long __a,__d; \
    __asm__ __volatile__("rdtsc" : "=a" (__a), "=d" (__d)); \
    (val) = ((unsigned long long)__a) | (((unsigned long long)__d)<= start)
    ret = end - start;
    else
    ret = ~0ULL - start + 1 + end;

    *res = gcd_res;
    return ret;
    }

    #else

    static inline struct timespec read_time(void)
    {
    struct timespec time;
    clock_gettime(CLOCK_PROCESS_CPUTIME_ID, &time);
    return time;
    }

    static inline unsigned long long diff_time(struct timespec start, struct timespec end)
    {
    struct timespec temp;

    if ((end.tv_nsec - start.tv_nsec) < 0) {
    temp.tv_sec = end.tv_sec - start.tv_sec - 1;
    temp.tv_nsec = 1000000000ULL + end.tv_nsec - start.tv_nsec;
    } else {
    temp.tv_sec = end.tv_sec - start.tv_sec;
    temp.tv_nsec = end.tv_nsec - start.tv_nsec;
    }

    return temp.tv_sec * 1000000000ULL + temp.tv_nsec;
    }

    static unsigned long long benchmark_gcd_func(unsigned long (*gcd)(unsigned long, unsigned long),
    unsigned long a, unsigned long b, unsigned long *res)
    {
    struct timespec start, end;
    unsigned long gcd_res;

    start = read_time();
    gcd_res = gcd(a, b);
    end = read_time();

    *res = gcd_res;
    return diff_time(start, end);
    }

    #endif

    static inline unsigned long get_rand()
    {
    if (sizeof(long) == 8)
    return (unsigned long)rand() << 32 | rand();
    else
    return rand();
    }

    int main(int argc, char **argv)
    {
    unsigned int seed = time(0);
    int loops = 100;
    int repeats = 1000;
    unsigned long (*res)[TEST_ENTRIES];
    unsigned long long elapsed[TEST_ENTRIES];
    int i, j, k;

    for (;;) {
    int opt = getopt(argc, argv, "n:r:s:");
    /* End condition always first */
    if (opt == -1)
    break;

    switch (opt) {
    case 'n':
    loops = atoi(optarg);
    break;
    case 'r':
    repeats = atoi(optarg);
    break;
    case 's':
    seed = strtoul(optarg, NULL, 10);
    break;
    default:
    /* You won't actually get here. */
    break;
    }
    }

    res = malloc(sizeof(unsigned long) * TEST_ENTRIES * loops);
    memset(elapsed, 0, sizeof(elapsed));

    srand(seed);
    for (j = 0; j < loops; j++) {
    unsigned long a = get_rand();
    /* Do we have args? */
    unsigned long b = argc > optind ? strtoul(argv[optind], NULL, 10) : get_rand();
    unsigned long long min_elapsed[TEST_ENTRIES];
    for (k = 0; k < repeats; k++) {
    for (i = 0; i < TEST_ENTRIES; i++) {
    unsigned long long tmp = benchmark_gcd_func(gcd_func[i], a, b, &res[j][i]);
    if (k == 0 || min_elapsed[i] > tmp)
    min_elapsed[i] = tmp;
    }
    }
    for (i = 0; i < TEST_ENTRIES; i++)
    elapsed[i] += min_elapsed[i];
    }

    for (i = 0; i < TEST_ENTRIES; i++)
    printf("gcd%d: elapsed %llu\n", i, elapsed[i]);

    k = 0;
    srand(seed);
    for (j = 0; j < loops; j++) {
    unsigned long a = get_rand();
    unsigned long b = argc > optind ? strtoul(argv[optind], NULL, 10) : get_rand();
    for (i = 1; i < TEST_ENTRIES; i++) {
    if (res[j][i] != res[j][0])
    break;
    }
    if (i < TEST_ENTRIES) {
    if (k == 0) {
    k = 1;
    fprintf(stderr, "Error:\n");
    }
    fprintf(stderr, "gcd(%lu, %lu): ", a, b);
    for (i = 0; i < TEST_ENTRIES; i++)
    fprintf(stderr, "%ld%s", res[j][i], i < TEST_ENTRIES - 1 ? ", " : "\n");
    }
    }

    if (k == 0)
    fprintf(stderr, "PASS\n");

    free(res);

    return 0;
    }

    Compiled with "-O2", on "VirtualBox 4.4.0-22-generic #38-Ubuntu x86_64" got:

    zhaoxiuzeng@zhaoxiuzeng-VirtualBox:~/develop$ ./gcd -r 500000 -n 10
    gcd0: elapsed 10174
    gcd1: elapsed 2120
    gcd2: elapsed 2902
    gcd3: elapsed 2039
    gcd4: elapsed 2812
    PASS
    zhaoxiuzeng@zhaoxiuzeng-VirtualBox:~/develop$ ./gcd -r 500000 -n 10
    gcd0: elapsed 9309
    gcd1: elapsed 2280
    gcd2: elapsed 2822
    gcd3: elapsed 2217
    gcd4: elapsed 2710
    PASS
    zhaoxiuzeng@zhaoxiuzeng-VirtualBox:~/develop$ ./gcd -r 500000 -n 10
    gcd0: elapsed 9589
    gcd1: elapsed 2098
    gcd2: elapsed 2815
    gcd3: elapsed 2030
    gcd4: elapsed 2718
    PASS
    zhaoxiuzeng@zhaoxiuzeng-VirtualBox:~/develop$ ./gcd -r 500000 -n 10
    gcd0: elapsed 9914
    gcd1: elapsed 2309
    gcd2: elapsed 2779
    gcd3: elapsed 2228
    gcd4: elapsed 2709
    PASS

    [akpm@linux-foundation.org: avoid #defining a CONFIG_ variable]
    Signed-off-by: Zhaoxiu Zeng
    Signed-off-by: George Spelvin
    Signed-off-by: Andrew Morton
    Signed-off-by: Linus Torvalds

    Zhaoxiu Zeng
     

21 Jan, 2016

1 commit

  • e1c7e3245   dma-mapping: always provide the dma_map_ops based implementation ... Browse Code »

    Move the generic implementation to now that all
    architectures support it and remove the HAVE_DMA_ATTR Kconfig symbol now
    that everyone supports them.

    [valentinrothberg@gmail.com: remove leftovers in Kconfig]
    Signed-off-by: Christoph Hellwig
    Cc: "David S. Miller"
    Cc: Aurelien Jacquiot
    Cc: Chris Metcalf
    Cc: David Howells
    Cc: Geert Uytterhoeven
    Cc: Haavard Skinnemoen
    Cc: Hans-Christian Egtvedt
    Cc: Helge Deller
    Cc: James Hogan
    Cc: Jesper Nilsson
    Cc: Koichi Yasutake
    Cc: Ley Foon Tan
    Cc: Mark Salter
    Cc: Mikael Starvik
    Cc: Steven Miao
    Cc: Vineet Gupta
    Cc: Christian Borntraeger
    Cc: Joerg Roedel
    Cc: Sebastian Ott
    Signed-off-by: Valentin Rothberg
    Signed-off-by: Andrew Morton
    Signed-off-by: Linus Torvalds

    Christoph Hellwig
     

18 Jul, 2015

1 commit

  • 04ea1e91f   openrisc: fix CONFIG_UID16 setting ... Browse Code »

    openrisc-allnoconfig:

    kernel/uid16.c: In function 'SYSC_setgroups16':
    kernel/uid16.c:184:2: error: implicit declaration of function 'groups_alloc'
    kernel/uid16.c:184:13: warning: assignment makes pointer from integer without a cast

    openrisc shouldn't be setting CONFIG_UID16 when CONFIG_MULTIUSER=n.

    Fixes: 2813893f8b197a1 ("kernel: conditionally support non-root users, groups and capabilities")
    Reported-by: Fengguang Wu
    Cc: Iulia Manda
    Cc: Josh Triplett
    Signed-off-by: Andrew Morton
    Signed-off-by: Linus Torvalds

    Andrew Morton
     

03 Sep, 2014

1 commit

01 Jul, 2014

1 commit

  • 4db8e6d20   irqchip: or1k-pic: Migrate from arch/openrisc/ ... Browse Code »

    In addition to consolidating the or1k-pic with other interrupt
    controllers, this makes OpenRISC less tied to its on-cpu
    interrupt controller.

    All or1k-pic specific parts are moved out of irq.c and into
    drivers/irqchip/irq-or1k-pic.c

    In that transition, the functionality have been divided into
    three chip variants.
    One that handles level triggered interrupts, one that handles edge
    triggered interrupts and one that handles the interrupt
    controller that is present in the or1200 OpenRISC cpu
    implementation.

    Signed-off-by: Stefan Kristiansson
    Link: https://lkml.kernel.org/r/1401136302-27654-1-git-send-email-stefan.kristiansson@saunalahti.fi
    Acked-by: Jonas Bonn
    Signed-off-by: Jason Cooper

    Stefan Kristiansson
     

08 Apr, 2014

1 commit

  • ce816fa88   Kconfig: rename HAS_IOPORT to HAS_IOPORT_MAP ... Browse Code »

    If the renamed symbol is defined lib/iomap.c implements ioport_map and
    ioport_unmap and currently (nearly) all platforms define the port
    accessor functions outb/inb and friend unconditionally. So
    HAS_IOPORT_MAP is the better name for this.

    Consequently NO_IOPORT is renamed to NO_IOPORT_MAP.

    The motivation for this change is to reintroduce a symbol HAS_IOPORT
    that signals if outb/int et al are available. I will address that at
    least one merge window later though to keep surprises to a minimum and
    catch new introductions of (HAS|NO)_IOPORT.

    The changes in this commit were done using:

    $ git grep -l -E '(NO|HAS)_IOPORT' | xargs perl -p -i -e 's/\b((?:CONFIG_)?(?:NO|HAS)_IOPORT)\b/$1_MAP/'

    Signed-off-by: Uwe Kleine-König
    Acked-by: Arnd Bergmann
    Signed-off-by: Andrew Morton
    Signed-off-by: Linus Torvalds

    Uwe Kleine-König
     

13 Sep, 2013

1 commit

14 Aug, 2013

1 commit

  • 57a1a1976   arch: *: Kconfig: add "kernel/Kconfig.freezer" to "arch/*/Kconfig" ... Browse Code »

    All architectures include "kernel/Kconfig.freezer" except three left, so
    let them include it too, or 'allmodconfig' will report error.

    The related errors: (with allmodconfig for openrisc):

    CC kernel/cgroup_freezer.o
    kernel/cgroup_freezer.c: In function 'freezer_css_online':
    kernel/cgroup_freezer.c:133:15: error: 'system_freezing_cnt' undeclared (first use in this function)
    kernel/cgroup_freezer.c:133:15: note: each undeclared identifier is reported only once for each function it appears in
    kernel/cgroup_freezer.c: In function 'freezer_css_offline':
    kernel/cgroup_freezer.c:157:15: error: 'system_freezing_cnt' undeclared (first use in this function)
    kernel/cgroup_freezer.c: In function 'freezer_attach':
    kernel/cgroup_freezer.c:200:4: error: implicit declaration of function 'freeze_task'
    kernel/cgroup_freezer.c: In function 'freezer_apply_state':
    kernel/cgroup_freezer.c:371:16: error: 'system_freezing_cnt' undeclared (first use in this function)

    Signed-off-by: Chen Gang
    Cc: Richard Kuo
    Cc: Jonas Bonn
    Cc: Chen Liqin
    Cc: Lennox Wu
    Signed-off-by: Andrew Morton
    Signed-off-by: Linus Torvalds

    Chen Gang
     

05 Jul, 2013

1 commit

  • d1a1dc0be   consolidate per-arch stack overflow debugging options ... Browse Code »

    Original posting:

    http://lkml.kernel.org/r/20121214184202.F54094D9@kernel.stglabs.ibm.com

    Several architectures have similar stack debugging config options.
    They all pretty much do the same thing, some with slightly
    differing help text.

    This patch changes the architectures to instead enable a Kconfig
    boolean, and then use that boolean in the generic Kconfig.debug
    to present the actual menu option. This removes a bunch of
    duplication and adds consistency across arches.

    Signed-off-by: Dave Hansen
    Reviewed-by: H. Peter Anvin
    Reviewed-by: James Hogan
    Acked-by: Chris Metcalf [for tile]
    Signed-off-by: Dave Hansen
    Signed-off-by: Linus Torvalds

    Dave Hansen
     

10 May, 2013

1 commit

  • 5647ac0ad   Merge tag 'gpio-for-linus' of git://git.secretlab.ca/git/linux ... Browse Code »

    Pull removal of GENERIC_GPIO from Grant Likely:
    "GENERIC_GPIO now synonymous with GPIOLIB. There are no longer any
    valid cases for enableing GENERIC_GPIO without GPIOLIB, even though it
    is possible to do so which has been causing confusion and breakage.
    This branch does the work to completely eliminate GENERIC_GPIO."

    * tag 'gpio-for-linus' of git://git.secretlab.ca/git/linux:
    gpio: update gpio Chinese documentation
    Remove GENERIC_GPIO config option
    Convert selectors of GENERIC_GPIO to GPIOLIB
    blackfin: force use of gpiolib
    m68k: coldfire: use gpiolib
    mips: pnx833x: remove requirement for GENERIC_GPIO
    openrisc: default GENERIC_GPIO to false
    avr32: default GENERIC_GPIO to false
    xtensa: remove explicit selection of GENERIC_GPIO
    sh: replace CONFIG_GENERIC_GPIO by CONFIG_GPIOLIB
    powerpc: remove redundant GENERIC_GPIO selection
    unicore32: default GENERIC_GPIO to false
    unicore32: remove unneeded select GENERIC_GPIO
    arm: plat-orion: use GPIO driver on CONFIG_GPIOLIB
    arm: remove redundant GENERIC_GPIO selection
    mips: alchemy: require gpiolib
    mips: txx9: change GENERIC_GPIO to GPIOLIB
    mips: loongson: use GPIO driver on CONFIG_GPIOLIB
    mips: remove redundant GENERIC_GPIO select

    Linus Torvalds
     

01 May, 2013

1 commit

16 Apr, 2013

1 commit

  • 7fd2bf3d3   Remove GENERIC_GPIO config option ... Browse Code »

    GENERIC_GPIO has been made equivalent to GPIOLIB in architecture code
    and all driver code has been switch to depend on GPIOLIB. It is thus
    safe to have GENERIC_GPIO removed.

    Signed-off-by: Alexandre Courbot
    Acked-by: Linus Walleij
    Acked-by: Grant Likely

    Alexandre Courbot
     

20 Mar, 2013

1 commit

  • 5fa0a8cb4   openrisc: default GENERIC_GPIO to false ... Browse Code »

    This is one step towards the removal of the GENERIC_GPIO option.
    OpenRISC mandates the use of GPIOLIB, which enables GENERIC_GPIO anyway,
    so this patch should be a no-op.

    Signed-off-by: Alexandre Courbot
    Acked-by: Arnd Bergmann
    Acked-by: Linus Walleij
    Acked-by: Jonas Bonn

    Alexandre Courbot
     

13 Mar, 2013

3 commits

  • 6af609515   openrisc: remove HAVE_VIRT_TO_BUS ... Browse Code »

    The OpenRISC arch doesn't actually have the virt_to_bus methods

    Signed-off-by: Jonas Bonn

    Jonas Bonn
     
  • d4cb776f3   openrisc: require gpiolib ... Browse Code »

    The recent move to GPIO descriptors breaks the OpenRISC build. Requiring
    gpiolib resolves this; using gpiolib exclusively is also the recommended
    way forward for all arches by the developers working on these GPIO changes.
    The non-gpiolib implementation for OpenRISC never worked anyway...

    Signed-off-by: Jonas Bonn

    Jonas Bonn
     
  • 4febd95a8   Select VIRT_TO_BUS directly where needed ... Browse Code »

    In commit 887cbce0adea ("arch Kconfig: centralise ARCH_NO_VIRT_TO_BUS")
    I introduced the config sybmol HAVE_VIRT_TO_BUS and selected that where
    needed. I am not sure what I was thinking. Instead, just directly
    select VIRT_TO_BUS where it is needed.

    Signed-off-by: Stephen Rothwell
    Signed-off-by: Linus Torvalds

    Stephen Rothwell
     

28 Feb, 2013

1 commit

  • 887cbce0a   arch Kconfig: centralise CONFIG_ARCH_NO_VIRT_TO_BUS ... Browse Code »

    Change it to CONFIG_HAVE_VIRT_TO_BUS and set it in all architecures
    that already provide virt_to_bus().

    Signed-off-by: Stephen Rothwell
    Reviewed-by: James Hogan
    Cc: Bjorn Helgaas
    Cc: H Hartley Sweeten
    Cc: Benjamin Herrenschmidt
    Cc: Paul Mackerras
    Cc: "David S. Miller"
    Cc: Paul Mundt
    Cc: Vineet Gupta
    Cc: James Bottomley
    Cc:
    Signed-off-by: Andrew Morton
    Signed-off-by: Linus Torvalds

    Stephen Rothwell
     

11 Feb, 2013

1 commit

21 Dec, 2012

1 commit

  • 54d46ea99   Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/signal ... Browse Code »

    Pull signal handling cleanups from Al Viro:
    "sigaltstack infrastructure + conversion for x86, alpha and um,
    COMPAT_SYSCALL_DEFINE infrastructure.

    Note that there are several conflicts between "unify
    SS_ONSTACK/SS_DISABLE definitions" and UAPI patches in mainline;
    resolution is trivial - just remove definitions of SS_ONSTACK and
    SS_DISABLED from arch/*/uapi/asm/signal.h; they are all identical and
    include/uapi/linux/signal.h contains the unified variant."

    Fixed up conflicts as per Al.

    * 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/signal:
    alpha: switch to generic sigaltstack
    new helpers: __save_altstack/__compat_save_altstack, switch x86 and um to those
    generic compat_sys_sigaltstack()
    introduce generic sys_sigaltstack(), switch x86 and um to it
    new helper: compat_user_stack_pointer()
    new helper: restore_altstack()
    unify SS_ONSTACK/SS_DISABLE definitions
    new helper: current_user_stack_pointer()
    missing user_stack_pointer() instances
    Bury the conditionals from kernel_thread/kernel_execve series
    COMPAT_SYSCALL_DEFINE: infrastructure

    Linus Torvalds
     

20 Dec, 2012

1 commit

  • ae903caae   Bury the conditionals from kernel_thread/kernel_execve series ... Browse Code »

    All architectures have
    CONFIG_GENERIC_KERNEL_THREAD
    CONFIG_GENERIC_KERNEL_EXECVE
    __ARCH_WANT_SYS_EXECVE
    None of them have __ARCH_WANT_KERNEL_EXECVE and there are only two callers
    of kernel_execve() (which is a trivial wrapper for do_execve() now) left.
    Kill the conditionals and make both callers use do_execve().

    Signed-off-by: Al Viro

    Al Viro
     

14 Dec, 2012

1 commit

  • a2013a13e   Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jikos/trivial ... Browse Code »

    Pull trivial branch from Jiri Kosina:
    "Usual stuff -- comment/printk typo fixes, documentation updates, dead
    code elimination."

    * 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jikos/trivial: (39 commits)
    HOWTO: fix double words typo
    x86 mtrr: fix comment typo in mtrr_bp_init
    propagate name change to comments in kernel source
    doc: Update the name of profiling based on sysfs
    treewide: Fix typos in various drivers
    treewide: Fix typos in various Kconfig
    wireless: mwifiex: Fix typo in wireless/mwifiex driver
    messages: i2o: Fix typo in messages/i2o
    scripts/kernel-doc: check that non-void fcts describe their return value
    Kernel-doc: Convention: Use a "Return" section to describe return values
    radeon: Fix typo and copy/paste error in comments
    doc: Remove unnecessary declarations from Documentation/accounting/getdelays.c
    various: Fix spelling of "asynchronous" in comments.
    Fix misspellings of "whether" in comments.
    eisa: Fix spelling of "asynchronous".
    various: Fix spelling of "registered" in comments.
    doc: fix quite a few typos within Documentation
    target: iscsi: fix comment typos in target/iscsi drivers
    treewide: fix typo of "suport" in various comments and Kconfig
    treewide: fix typo of "suppport" in various comments
    ...

    Linus Torvalds
     

03 Dec, 2012

1 commit

20 Oct, 2012

1 commit

28 Sep, 2012

1 commit

  • 786d35d45   Make most arch asm/module.h files use asm-generic/module.h ... Browse Code »

    Use the mapping of Elf_[SPE]hdr, Elf_Addr, Elf_Sym, Elf_Dyn, Elf_Rel/Rela,
    ELF_R_TYPE() and ELF_R_SYM() to either the 32-bit version or the 64-bit version
    into asm-generic/module.h for all arches bar MIPS.

    Also, use the generic definition mod_arch_specific where possible.

    To this end, I've defined three new config bools:

    (*) HAVE_MOD_ARCH_SPECIFIC

    Arches define this if they don't want to use the empty generic
    mod_arch_specific struct.

    (*) MODULES_USE_ELF_RELA

    Arches define this if their modules can contain RELA records. This causes
    the Elf_Rela mapping to be emitted and allows apply_relocate_add() to be
    defined by the arch rather than have the core emit an error message.

    (*) MODULES_USE_ELF_REL

    Arches define this if their modules can contain REL records. This causes
    the Elf_Rel mapping to be emitted and allows apply_relocate() to be
    defined by the arch rather than have the core emit an error message.

    Note that it is possible to allow both REL and RELA records: m68k and mips are
    two arches that do this.

    With this, some arch asm/module.h files can be deleted entirely and replaced
    with a generic-y marker in the arch Kbuild file.

    Additionally, I have removed the bits from m32r and score that handle the
    unsupported type of relocation record as that's now handled centrally.

    Signed-off-by: David Howells
    Acked-by: Sam Ravnborg
    Signed-off-by: Rusty Russell

    David Howells
     

28 May, 2012

1 commit

25 May, 2012

2 commits

  • 603d6637a   openrisc: use generic strncpy_from_user ... Browse Code »

    As per commits 2922585b9329 ("lib: Sparc's strncpy_from_user is generic
    enough, move under lib/") and 92ae03f2ef99 ("x86: merge 32/64-bit
    versions of 'strncpy_from_user()' and speed it up"), and corresponding
    discussion on linux-arch.

    Signed-off-by: Jonas Bonn
    Signed-off-by: Linus Torvalds

    Jonas Bonn
     
  • c7523a7c8   Merge branch 'timers-core-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip ... Browse Code »

    Pull timer updates from Thomas Gleixner.

    Various trivial conflict fixups in arch Kconfig due to addition of
    unrelated entries nearby. And one slightly more subtle one for sparc32
    (new user of GENERIC_CLOCKEVENTS), fixed up as per Thomas.

    * 'timers-core-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: (31 commits)
    timekeeping: Fix a few minor newline issues.
    time: remove obsolete declaration
    ntp: Fix a stale comment and a few stray newlines.
    ntp: Correct TAI offset during leap second
    timers: Fixup the Kconfig consolidation fallout
    x86: Use generic time config
    unicore32: Use generic time config
    um: Use generic time config
    tile: Use generic time config
    sparc: Use: generic time config
    sh: Use generic time config
    score: Use generic time config
    s390: Use generic time config
    openrisc: Use generic time config
    powerpc: Use generic time config
    mn10300: Use generic time config
    mips: Use generic time config
    microblaze: Use generic time config
    m68k: Use generic time config
    m32r: Use generic time config
    ...

    Linus Torvalds
     

23 May, 2012

1 commit

  • e8650a082   Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jikos/trivial ... Browse Code »

    Pull trivial updates from Jiri Kosina:
    "As usual, it's mostly typo fixes, redundant code elimination and some
    documentation updates."

    * 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jikos/trivial: (57 commits)
    edac, mips: don't change code that has been removed in edac/mips tree
    xtensa: Change mail addresses of Hannes Weiner and Oskar Schirmer
    lib: Change mail address of Oskar Schirmer
    net: Change mail address of Oskar Schirmer
    arm/m68k: Change mail address of Sebastian Hess
    i2c: Change mail address of Oskar Schirmer
    net: Fix tcp_build_and_update_options comment in struct tcp_sock
    atomic64_32.h: fix parameter naming mismatch
    Kconfig: replace "--- help ---" with "---help---"
    c2port: fix bogus Kconfig "default no"
    edac: Fix spelling errors.
    qla1280: Remove redundant NULL check before release_firmware() call
    remoteproc: remove redundant NULL check before release_firmware()
    qla2xxx: Remove redundant NULL check before release_firmware() call.
    aic94xx: Get rid of redundant NULL check before release_firmware() call
    tehuti: delete redundant NULL check before release_firmware()
    qlogic: get rid of a redundant test for NULL before call to release_firmware()
    bna: remove redundant NULL test before release_firmware()
    tg3: remove redundant NULL test before release_firmware() call
    typhoon: get rid of redundant conditional before all to release_firmware()
    ...

    Linus Torvalds
     

22 May, 2012

1 commit

  • 764e0da14   timers: Fixup the Kconfig consolidation fallout ... Browse Code »

    Sigh, I missed to check which architecture Kconfig files actually
    include the core Kconfig file. There are a few which did not. So we
    broke them.

    Instead of adding the includes to those, we are better off to move the
    include to init/Kconfig like we did already with irqs and others.

    This does not change anything for the architectures using the old
    style periodic timer mode. It just solves the build wreckage there.

    For those architectures which use the clock events infrastructure it
    moves the include of the core Kconfig file to "General setup" which is
    a way more logical place than having it at random locations specified
    by the architecture specific Kconfigs.

    Reported-by: Ingo Molnar
    Cc: Anna-Maria Gleixner
    Signed-off-by: Thomas Gleixner

    Thomas Gleixner
     

21 May, 2012

1 commit

08 May, 2012

1 commit

  • b4c4c6ee9   openrisc: implement irqdomains ... Browse Code »

    This moves OpenRISC to using the irqdomain infrastructure. This doesn't
    fundamentally change anything other than that it will be easier to have
    multiple interrupt controllers in the future.

    Signed-off-by: Jonas Bonn

    Jonas Bonn
     

16 Apr, 2012

1 commit

06 Mar, 2012

1 commit

12 Jan, 2012

1 commit

  • 9f13a1fd4   cpu: Register a generic CPU device on architectures that currently do not ... Browse Code »
    43

    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 covered UML and suggested using
    per_cpu.

    Signed-off-by: Ben Hutchings
    Signed-off-by: Linus Torvalds

    Ben Hutchings