Paul E. McKenney
6303b9c87d
rcu: Apply smp_mb__after_unlock_lock() to preserve grace periods ...
RCU must ensure that there is the equivalent of a full memory
barrier between any memory access preceding grace period and any
memory access following that same grace period, regardless of
which CPU(s) happen to execute the two memory accesses.
Therefore, downgrading UNLOCK+LOCK to no longer imply a full
memory barrier requires some adjustments to RCU.
This commit therefore adds smp_mb__after_unlock_lock()
invocations as needed after the RCU lock acquisitions that need
to be part of a full-memory-barrier UNLOCK+LOCK.
Signed-off-by: Paul E. McKenney <paulmck@linux.vnet.ibm.com>
Reviewed-by: Peter Zijlstra <a.p.zijlstra@chello.nl>
Cc: <linux-arch@vger.kernel.org>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Andrew Morton <akpm@linux-foundation.org>
Link: http://lkml.kernel.org/r/1386799151-2219-7-git-send-email-paulmck@linux.vnet.ibm.com
Signed-off-by: Ingo Molnar <mingo@kernel.org>
2013-12-16 11:36:16 +01:00
sched: Add NEED_RESCHED to the preempt_count
2013-09-25 14:07:49 +02:00
kdb: Add support for external NMI handler to call KGDB/KDB
2013-10-03 18:47:54 +02:00
list: introduce list_next_entry() and list_prev_entry()
2013-11-13 12:09:23 +09:00
gcov: reuse kbasename helper
2013-11-13 12:09:34 +09:00
Merge branch 'irq-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
2013-11-19 10:40:00 -08:00
lockdep: Be nice about building from userspace
2013-11-27 11:55:20 +01:00
Merge branch 'pm-sleep'
2013-11-07 19:26:55 +01:00
printk.c: comments should refer to /proc/vmcore instead of /proc/vmcoreinfo
2013-11-13 12:09:14 +09:00
rcu: Apply smp_mb__after_unlock_lock() to preserve grace periods
2013-12-16 11:36:16 +01:00
sched/fair: Avoid integer overflow
2013-11-13 13:33:55 +01:00
Merge branch 'timers-core-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
2013-11-12 10:36:00 +09:00
This batch of changes is mostly clean ups and small bug fixes.
2013-11-16 12:23:18 -08:00
audit: fix endless wait in audit_log_start()
2013-09-24 17:00:26 -07:00
audit: fix mq_open and mq_unlink to add the MQ root as a hidden parent audit_names record
2013-07-09 10:33:19 -07:00
kernel/audit_tree.c:audit_add_tree_rule(): protect `rule' from kill_rules()
2013-06-12 16:29:46 -07:00
audit: Fix decimal constant description
2013-07-09 10:33:19 -07:00
audit: fix mq_open and mq_unlink to add the MQ root as a hidden parent audit_names record
2013-07-09 10:33:19 -07:00
kernel/bounds: avoid circular dependencies in generated headers
2013-11-19 14:20:12 -08:00
xfs: update for v3.12-rc1
2013-09-09 11:19:09 -07:00
Merge branch 'for-3.13' of git://git.kernel.org/pub/scm/linux/kernel/git/tj/cgroup
2013-11-13 15:21:53 +09:00
cgroup: make css_for_each_descendant() and friends include the origin css in the iteration
2013-08-08 20:11:27 -04:00
Linux 3.12-rc4
2013-10-09 12:36:13 +02:00
Merge branch 'sched-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
2013-11-14 16:55:11 +09:00
Merge branch 'for-3.12' of git://git.kernel.org/pub/scm/linux/kernel/git/tj/cgroup
2013-09-03 18:25:03 -07:00
kernel/delayacct.c: remove redundant checking in __delayacct_add_tsk()
2013-11-13 12:09:12 +09:00
switch elf_core_write_extra_phdrs() to dump_emit()
2013-11-09 00:16:23 -05:00
ptrace: revert "Prepare to fix racy accesses on task breakpoints"
2013-07-09 10:33:26 -07:00
extable: skip sorting if the table is empty
2013-09-11 15:58:25 -07:00
mm: implement split page table lock for PMD level
2013-11-15 09:32:15 +09:00
freezer: set PF_SUSPEND_TASK flag on tasks that call freeze_processes
2013-07-30 14:05:06 +02:00
locking: Move the rtmutex code to kernel/locking/
2013-11-06 09:23:59 +01:00
userns: Kill nsown_capable it makes the wrong thing easy
2013-08-30 23:44:11 -07:00
kernel: delete __cpuinit usage from all core kernel files
2013-07-14 19:36:59 -04:00
Here are the 3.13 KVM changes. There was a lot of work on the PPC
2013-11-15 13:51:36 +09:00
static_key: WARN on usage before jump_label_init was called
2013-10-19 19:45:35 -04:00
kernel: remove CONFIG_USE_GENERIC_SMP_HELPERS
2013-11-15 09:32:22 +09:00
locking: Fix copy/paste errors of "ARCH_INLINE_*_UNLOCK_BH"
2013-05-28 08:50:00 +02:00
Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jikos/trivial
2013-11-15 16:47:22 -08:00
kernel/kmod.c: check for NULL in call_usermodehelper_exec()
2013-09-30 14:31:02 -07:00
kprobes: use KSYM_NAME_LEN to size identifier buffers
2013-11-13 12:09:26 +09:00
kernel: replace strict_strto*() with kstrto*()
2013-09-12 15:38:03 -07:00
kthread: make kthread_create() killable
2013-11-13 12:08:59 +09:00
Merge branch 'sched-core-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
2013-11-12 10:20:12 +09:00
kernel/modsign_pubkey.c: fix init const for module signing code
2013-09-11 15:58:21 -07:00
Mainly boring here, too. rmmod --wait finally removed, though.
2013-11-15 13:27:50 +09:00
Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/ebiederm/user-namespace
2013-09-07 14:35:32 -07:00
padata - Register hotcpu notifier after initialization
2013-08-29 14:37:59 +10:00
kernel/panic.c: reduce 1 byte usage for print tainted buffer
2013-11-13 12:09:35 +09:00
kernel/params: fix handling of signed integer types
2013-09-28 12:35:52 -07:00
pidns: fix free_pid() to handle the first fork failure
2013-09-30 14:31:03 -07:00
pid_namespace: make freeing struct pid_namespace rcu-delayed
2013-10-24 23:43:29 -04:00
posix_timers: fix racy timer delta caching on task exit
2013-07-03 16:54:42 +02:00
kernel: delete __cpuinit usage from all core kernel files
2013-07-14 19:36:59 -04:00
exec/ptrace: fix get_dumpable() incorrect tests
2013-11-13 12:09:33 +09:00
range: Do not add new blank slot with add_range_with_merge
2013-06-18 11:32:10 -05:00
kernel/reboot.c: re-enable the function of variable reboot_default
2013-09-24 17:00:26 -07:00
kernel: delete __cpuinit usage from all core kernel files
2013-07-14 19:36:59 -04:00
memcg: reduce function dereference
2013-09-12 15:38:02 -07:00
kernel/resource.c: remove the unneeded assignment in function __find_resource
2013-07-03 16:08:06 -07:00
constify copy_siginfo_to_user{,32}()
2013-11-09 00:16:29 -05:00
kernel: fix generic_exec_single indentation
2013-11-15 09:32:22 +09:00
kernel: delete __cpuinit usage from all core kernel files
2013-07-14 19:36:59 -04:00
lockdep: Simplify a bit hardirq <-> softirq transitions
2013-11-27 11:09:40 +01:00
stop_machine: Fix race between stop_two_cpus() and stop_cpus()
2013-11-11 12:43:38 +01:00
kernel/sys.c: remove obsolete #include <linux/kexec.h>
2013-11-13 12:09:13 +09:00
Merge branch 'core-locking-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
2013-11-14 16:30:30 +09:00
kernel/sysctl_binary.c: use scnprintf() instead of snprintf()
2013-11-13 12:09:33 +09:00
task_work: documentation
2013-09-11 15:58:27 -07:00
genetlink: only pass array to genl_register_family_with_ops()
2013-11-19 16:39:05 -05:00
sched: Rename sched.c as sched/core.c in comments and Documentation
2013-06-19 12:58:42 +02:00
sched: Introduce preempt_count accessor functions
2013-09-25 14:07:32 +02:00
userns: Kill nsown_capable it makes the wrong thing easy
2013-08-30 23:44:11 -07:00
kernel: provide a __smp_call_function_single stub for !CONFIG_SMP
2013-11-15 09:32:22 +09:00
userns: Better restrictions on when proc and sysfs can be mounted
2013-08-26 19:17:03 -07:00
Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/ebiederm/user-namespace
2013-09-07 14:35:32 -07:00
userns: Kill nsown_capable it makes the wrong thing easy
2013-08-30 23:44:11 -07:00
watchdog: update watchdog_thresh properly
2013-09-24 17:00:25 -07:00
Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jikos/trivial
2013-09-06 09:36:28 -07:00
sched: Rename sched.c as sched/core.c in comments and Documentation
2013-06-19 12:58:42 +02:00
6303b9c87d