Eric Lee / smarc-fsl-linux-kernel

07 Jan, 2015

1 commit

  • 83fe27ea5   rcu: Make SRCU optional by using CONFIG_SRCU ... Browse Code »

    SRCU is not necessary to be compiled by default in all cases. For tinification
    efforts not compiling SRCU unless necessary is desirable.

    The current patch tries to make compiling SRCU optional by introducing a new
    Kconfig option CONFIG_SRCU which is selected when any of the components making
    use of SRCU are selected.

    If we do not select CONFIG_SRCU, srcu.o will not be compiled at all.

    text data bss dec hex filename
    2007 0 0 2007 7d7 kernel/rcu/srcu.o

    Size of arch/powerpc/boot/zImage changes from

    text data bss dec hex filename
    831552 64180 23944 919676 e087c arch/powerpc/boot/zImage : before
    829504 64180 23952 917636 e0084 arch/powerpc/boot/zImage : after

    so the savings are about ~2000 bytes.

    Signed-off-by: Pranith Kumar
    CC: Paul E. McKenney
    CC: Josh Triplett
    CC: Lai Jiangshan
    Signed-off-by: Paul E. McKenney
    [ paulmck: resolve conflict due to removal of arch/ia64/kvm/Kconfig. ]

    Pranith Kumar
     

24 Apr, 2014

1 commit

  • b40a2cb6e   kprobes, notifier: Use NOKPROBE_SYMBOL macro in notifier ... Browse Code »

    Use NOKPROBE_SYMBOL macro to protect functions from
    kprobes instead of __kprobes annotation in notifier.

    Signed-off-by: Masami Hiramatsu
    Reviewed-by: Steven Rostedt
    Reviewed-by: Josh Triplett
    Cc: Paul E. McKenney
    Link: http://lkml.kernel.org/r/20140417081835.26341.56128.stgit@ltc230.yrl.intra.hitachi.co.jp
    Signed-off-by: Ingo Molnar

    Masami Hiramatsu
     

26 Feb, 2014

1 commit

  • 8857563b8   notifier: Substitute rcu_access_pointer() for rcu_dereference_raw() ... Browse Code »

    (Trivial patch.)

    If the code is looking at the RCU-protected pointer itself, but not
    dereferencing it, the rcu_dereference() functions can be downgraded
    to rcu_access_pointer(). This commit makes this downgrade in
    __blocking_notifier_call_chain() which simply compares the RCU-protected
    pointer against NULL with no dereferencing.

    Signed-off-by: Paul E. McKenney
    Cc: Andrew Morton
    Cc: Linus Torvalds
    Reviewed-by: Josh Triplett

    Paul E. McKenney
     

31 Oct, 2011

1 commit

  • 9984de1a5   kernel: Map most files to use export.h instead of module.h ... Browse Code »

    The changed files were only including linux/module.h for the
    EXPORT_SYMBOL infrastructure, and nothing else. Revector them
    onto the isolated export header for faster compile times.

    Nothing to see here but a whole lot of instances of:

    -#include
    +#include

    This commit is only changing the kernel dir; next targets
    will probably be mm, fs, the arch dirs, etc.

    Signed-off-by: Paul Gortmaker

    Paul Gortmaker
     

26 Jul, 2011

1 commit

  • c5f41752f   notifiers: sys: move reboot notifiers into reboot.h ... Browse Code »

    It is not necessary to share the same notifier.h.

    This patch already moves register_reboot_notifier() and
    unregister_reboot_notifier() from kernel/notifier.c to kernel/sys.c.

    [amwang@redhat.com: make allyesconfig succeed on ppc64]
    Signed-off-by: WANG Cong
    Cc: David Miller
    Cc: "Rafael J. Wysocki"
    Cc: Greg KH
    Signed-off-by: WANG Cong
    Signed-off-by: Andrew Morton
    Signed-off-by: Linus Torvalds

    Amerigo Wang
     

25 Feb, 2010

1 commit

  • d11c563dd   sched: Use lockdep-based checking on rcu_dereference() ... Browse Code »

    Update the rcu_dereference() usages to take advantage of the new
    lockdep-based checking.

    Signed-off-by: Paul E. McKenney
    Cc: laijs@cn.fujitsu.com
    Cc: dipankar@in.ibm.com
    Cc: mathieu.desnoyers@polymtl.ca
    Cc: josh@joshtriplett.org
    Cc: dvhltc@us.ibm.com
    Cc: niv@us.ibm.com
    Cc: peterz@infradead.org
    Cc: rostedt@goodmis.org
    Cc: Valdis.Kletnieks@vt.edu
    Cc: dhowells@redhat.com
    LKML-Reference:
    [ -v2: fix allmodconfig missing symbol export build failure on x86 ]
    Signed-off-by: Ingo Molnar

    Paul E. McKenney
     

30 Aug, 2009

1 commit

  • 8f2700835   kprobes: Fix to add __kprobes to notify_die ... Browse Code »

    Add __kprobes to notify_die() because do_int3() calls notify_die()
    instead of atomic_notify_call_chain() which is already marked as
    __kprobes.

    Signed-off-by: Masami Hiramatsu
    Acked-by: Ananth N Mavinakayanahalli
    Cc: Ingo Molnar
    LKML-Reference:
    Signed-off-by: Frederic Weisbecker

    Masami Hiramatsu
     

25 Nov, 2008

1 commit

14 Oct, 2008

1 commit

10 Sep, 2008

2 commits

  • ab7476cf7   debug: add notifier chain debugging, v2 ... Browse Code »

    - unbreak ia64 (and powerpc) where function pointers dont
    point at code but at data (reported by Tony Luck)

    [ mingo@elte.hu: various cleanups ]

    Signed-off-by: Arjan van de Ven
    Signed-off-by: Ingo Molnar

    Arjan van de Ven
     
  • 1b2439dbb   debug: add notifier chain debugging ... Browse Code »

    during some development we suspected a case where we left something
    in a notifier chain that was from a module that was unloaded already...
    and that sort of thing is rather hard to track down.

    This patch adds a very simple sanity check (which isn't all that
    expensive) to make sure the notifier we're about to call is
    actually from either the kernel itself of from a still-loaded
    module, avoiding a hard-to-chase-down crash.

    Signed-off-by: Arjan van de Ven
    Signed-off-by: Ingo Molnar

    Arjan van de Ven
     

29 Apr, 2008

1 commit

  • 6546bc427   ipc: re-enable msgmni automatic recomputing msgmni if set to negative ... Browse Code »

    The enhancement as asked for by Yasunori: if msgmni is set to a negative
    value, register it back into the ipcns notifier chain.

    A new interface has been added to the notification mechanism:
    notifier_chain_cond_register() registers a notifier block only if not already
    registered. With that new interface we avoid taking care of the states
    changes in procfs.

    Signed-off-by: Nadia Derbey
    Cc: Yasunori Goto
    Cc: Matt Helsley
    Cc: Mingming Cao
    Cc: Pierre Peiffer
    Signed-off-by: Andrew Morton
    Signed-off-by: Linus Torvalds

    Nadia Derbey
     

07 Feb, 2008

1 commit

20 Oct, 2007

1 commit

  • fe9d4f576   Add kernel/notifier.c ... Browse Code »

    There is separate notifier header, but no separate notifier .c file.

    Extract notifier code out of kernel/sys.c which will remain for
    misc syscalls I hope. Merge kernel/die_notifier.c into kernel/notifier.c.

    [akpm@linux-foundation.org: coding-style fixes]
    Signed-off-by: Alexey Dobriyan
    Signed-off-by: Andrew Morton
    Signed-off-by: Linus Torvalds

    Alexey Dobriyan