user/sven/linux.git/kernel/notifier.c, branch v4.1.18

rcu: Make SRCU optional by using CONFIG_SRCU

2015-01-06T19:04:29Z

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. ]

kprobes, notifier: Use NOKPROBE_SYMBOL macro in notifier

2014-04-24T08:26:39Z

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

notifier: Substitute rcu_access_pointer() for rcu_dereference_raw()

2014-02-26T14:35:13Z

(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

kernel: Map most files to use export.h instead of module.h

2011-10-31T13:20:12Z

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

notifiers: sys: move reboot notifiers into reboot.h

2011-07-26T03:57:14Z

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

sched: Use lockdep-based checking on rcu_dereference()

2010-02-25T09:34:26Z

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: <1266887105-1528-6-git-send-email-paulmck@linux.vnet.ibm.com> [ -v2: fix allmodconfig missing symbol export build failure on x86 ] Signed-off-by: Ingo Molnar

kprobes: Fix to add __kprobes to notify_die

2009-08-30T01:08:26Z

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: <20090827172318.8246.53702.stgit@localhost.localdomain> Signed-off-by: Frederic Weisbecker

Merge branches 'core/debug', 'core/futexes', 'core/locking', 'core/rcu', 'core/signal', 'core/urgent' and 'core/xen' into core/core

2008-11-24T16:44:55Z

ftrace: ignore functions that cannot be kprobe-ed

2008-10-14T08:34:22Z

kprobes already has an extensive list of annotations for functions that should not be instrumented. Add notrace annotations to these functions as well. This is particularly useful for functions called by the NMI path. Signed-off-by: Ingo Molnar

debug: add notifier chain debugging, v2

2008-09-10T07:08:53Z

- 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