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11bbb235c26f93b7c69e441452e44adbf6ed6996
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Paul E. McKenney 11bbb235c2 rcu: Use DEFINE_PER_CPU_SHARED_ALIGNED for rcu_data 
The rcu_data per-CPU variable has a number of fields that are atomically
manipulated, potentially by any CPU.  This situation can result in false
sharing with per-CPU variables that have the misfortune of being allocated
adjacent to rcu_data in memory.  This commit therefore changes the
DEFINE_PER_CPU() to DEFINE_PER_CPU_SHARED_ALIGNED() in order to avoid
this false sharing.

Reported-by: Christoph Lameter <cl@linux.com>
Signed-off-by: Paul E. McKenney <paulmck@linux.vnet.ibm.com>
Reviewed-by: Christoph Lameter <cl@linux.com>
Reviewed-by: Pranith Kumar <bobby.prani@gmail.com>
2014-11-03 19:20:03 -08:00
..
bpf
bpf: add search pruning optimization to verifier
2014-10-01 21:30:33 -04:00
configs
x86: Add "make tinyconfig" to configure the tiniest possible kernel
2014-08-08 16:30:24 -07:00
debug
kdb: replace strnicmp with strncasecmp
2014-10-14 02:18:25 +02:00
events
Merge branch 'for-3.18-consistent-ops' of git://git.kernel.org/pub/scm/linux/kernel/git/tj/percpu
2014-10-15 07:48:18 +02:00
gcov
ARM: 8153/1: Enable gcov support on the ARM architecture
2014-09-26 14:39:57 +01:00
irq
Merge branch 'for-3.18-consistent-ops' of git://git.kernel.org/pub/scm/linux/kernel/git/tj/percpu
2014-10-15 07:48:18 +02:00
locking
Merge branch 'locking-core-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
2014-10-13 15:51:40 +02:00
power
Merge branch 'pm-domains'
2014-10-07 01:18:12 +02:00
printk
Merge branch 'for-3.18-consistent-ops' of git://git.kernel.org/pub/scm/linux/kernel/git/tj/percpu
2014-10-15 07:48:18 +02:00
rcu
rcu: Use DEFINE_PER_CPU_SHARED_ALIGNED for rcu_data
2014-11-03 19:20:03 -08:00
sched
Merge branch 'for-3.18-consistent-ops' of git://git.kernel.org/pub/scm/linux/kernel/git/tj/percpu
2014-10-15 07:48:18 +02:00
time
Merge branch 'for-3.18-consistent-ops' of git://git.kernel.org/pub/scm/linux/kernel/git/tj/percpu
2014-10-15 07:48:18 +02:00
trace
Merge branch 'sched-core-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
2014-10-13 16:23:15 +02:00
.gitignore
Ignore generated file kernel/x509_certificate_list
2013-12-10 18:21:34 +00:00
acct.c
acct: eliminate compile warning
2014-10-09 22:26:04 -04:00
async.c
kernel/async.c: switch to pr_foo()
2014-10-09 22:26:04 -04:00
audit_tree.c
audit: rename audit_log_remove_rule to disambiguate for trees
2014-10-10 15:30:25 -04:00
audit_watch.c
audit: invalid op= values for rules
2014-09-23 16:37:53 -04:00
audit.c
Merge git://git.infradead.org/users/eparis/audit
2014-10-19 16:25:56 -07:00
audit.h
audit: reduce scope of audit_log_fcaps
2014-09-23 16:37:51 -04:00
auditfilter.c
Merge git://git.infradead.org/users/eparis/audit
2014-10-19 16:25:56 -07:00
auditsc.c
Merge git://git.infradead.org/users/eparis/audit
2014-10-19 16:25:56 -07:00
backtracetest.c
kernel/backtracetest.c: replace no level printk by pr_info()
2014-06-04 16:54:14 -07:00
bounds.c
page-cgroup: get rid of NR_PCG_FLAGS
2014-08-08 15:57:18 -07:00
capability.c
CAPABILITIES: remove undefined caps from all processes
2014-07-24 21:53:47 +10:00
cgroup_freezer.c
cgroup: rename cgroup_subsys->base_cftypes to ->legacy_cftypes
2014-07-15 11:05:09 -04:00
cgroup.c
Merge branch 'for-3.18' of git://git.kernel.org/pub/scm/linux/kernel/git/tj/percpu
2014-10-10 07:26:02 -04:00
compat.c
compat: nanosleep: Clarify error handling
2014-09-06 12:58:18 +02:00
configs.c
…
context_tracking.c
x86/kprobes: Fix build errors and blacklist context_track_user
2014-06-14 09:07:44 +02:00
cpu_pm.c
…
cpu.c
rcu: More on deadlock between CPU hotplug and expedited grace periods
2014-10-23 07:51:17 -07:00
cpuset.c
Merge branch 'for-3.18' of git://git.kernel.org/pub/scm/linux/kernel/git/tj/cgroup
2014-10-10 07:24:40 -04:00
crash_dump.c
crash_dump: Make is_kdump_kernel() accessible from modules
2014-08-25 15:42:19 -07:00
cred.c
…
delayacct.c
delayacct: Remove braindamaged type conversions
2014-07-23 10:18:06 -07:00
dma.c
…
elfcore.c
switch elf_core_write_extra_phdrs() to dump_emit()
2013-11-09 00:16:23 -05:00
exec_domain.c
kernel/exec_domain.c: code clean-up
2014-06-04 16:54:15 -07:00
exit.c
Merge branch 'sched-core-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
2014-10-13 16:23:15 +02:00
extable.c
asmlinkage: Make main_extable_sort_needed visible
2014-02-13 18:13:22 -08:00
fork.c
Merge branch 'sched-core-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
2014-10-13 16:23:15 +02:00
freezer.c
libata, freezer: avoid block device removal while system is frozen
2013-12-19 13:50:32 -05:00
futex_compat.c
compat: Get rid of (get|put)_compat_time(val|spec)
2014-02-02 14:09:12 -08:00
futex.c
futex: Ensure get_futex_key_refs() always implies a barrier
2014-10-18 09:28:51 -07:00
groups.c
kernel/groups.c: remove return value of set_groups
2014-04-03 16:21:05 -07:00
hung_task.c
kernel/hung_task.c: convert simple_strtoul to kstrtouint
2014-06-04 16:54:15 -07:00
irq_work.c
Merge branch 'for-3.18-consistent-ops' of git://git.kernel.org/pub/scm/linux/kernel/git/tj/percpu
2014-10-15 07:48:18 +02:00
jump_label.c
static_key: WARN on usage before jump_label_init was called
2013-10-19 19:45:35 -04:00
kallsyms.c
kernel/kallsyms.c: use __seq_open_private()
2014-10-14 02:18:16 +02:00
kcmp.c
kcmp: fix standard comparison bug
2014-09-10 15:42:12 -07:00
Kconfig.freezer
…
Kconfig.hz
kernel: remove CONFIG_USE_GENERIC_SMP_HELPERS
2013-11-15 09:32:22 +09:00
Kconfig.locks
locking/rwsem: Add CONFIG_RWSEM_SPIN_ON_OWNER
2014-07-16 14:57:13 +02:00
Kconfig.preempt
…
kexec.c
kexec: remove the unused function parameter
2014-10-14 02:18:21 +02:00
kmod.c
signals: change wait_for_helper() to use kernel_sigaction()
2014-06-06 16:08:12 -07:00
kprobes.c
kprobes: Skip kretprobe hit in NMI context to avoid deadlock
2014-08-08 10:38:04 +02:00
ksysfs.c
kobject: Make support for uevent_helper optional.
2014-04-25 12:00:49 -07:00
kthread.c
kernel/kthread.c: partial revert of 81c98869fa ("kthread: ensure locality of task_struct allocations")
2014-10-09 22:25:51 -04:00
latencytop.c
kernel/latencytop.c: convert seq_printf to seq_puts
2014-06-04 16:54:15 -07:00
Makefile
bin2c: move bin2c in scripts/basic
2014-08-08 15:57:32 -07:00
module_signing.c
keys: change asymmetric keys to use common hash definitions
2013-10-25 17:15:18 -04:00
module-internal.h
KEYS: Separate the kernel signature checking keyring from module signing
2013-09-25 17:17:01 +01:00
module.c
Merge tag 'modules-next-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/rusty/linux
2014-10-18 10:24:26 -07:00
notifier.c
kprobes, notifier: Use NOKPROBE_SYMBOL macro in notifier
2014-04-24 10:26:39 +02:00
nsproxy.c
namespaces: Use task_lock and not rcu to protect nsproxy
2014-07-29 18:08:50 -07:00
padata.c
padata: Fix wrong usage of rcu_dereference()
2013-12-05 21:28:42 +08:00
panic.c
panic: add TAINT_SOFTLOCKUP
2014-08-08 15:57:24 -07:00
params.c
kernel/param: consolidate __{start,stop}___param[] in <linux/moduleparam.h>
2014-10-14 02:18:28 +02:00
pid_namespace.c
pid_namespace: pidns_get() should check task_active_pid_ns() != NULL
2014-04-02 16:20:21 -07:00
pid.c
pidns: fix free_pid() to handle the first fork failure
2013-09-30 14:31:03 -07:00
profile.c
kernel/profile.c: use static const char instead of static char
2014-06-06 16:08:13 -07:00
ptrace.c
sched: Remove proliferation of wait_on_bit() action functions
2014-07-16 15:10:39 +02:00
range.c
…
reboot.c
kernel: add support for kernel restart handler call chain
2014-09-26 00:00:06 -07:00
relay.c
Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs
2014-04-12 14:49:50 -07:00
res_counter.c
kernel/res_counter.c: replace simple_strtoull by kstrtoull
2014-06-04 16:54:15 -07:00
resource.c
x86: optimize resource lookups for ioremap
2014-10-14 02:18:22 +02:00
seccomp.c
Merge branch 'x86-seccomp-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
2014-10-14 02:27:06 +02:00
signal.c
Merge branch 'signal-cleanup' of git://git.kernel.org/pub/scm/linux/kernel/git/rw/misc
2014-08-09 09:58:12 -07:00
smp.c
Merge branch 'for-3.18-consistent-ops' of git://git.kernel.org/pub/scm/linux/kernel/git/tj/percpu
2014-10-15 07:48:18 +02:00
smpboot.c
kernel: delete __cpuinit usage from all core kernel files
2013-07-14 19:36:59 -04:00
smpboot.h
…
softirq.c
Merge branch 'for-3.18-consistent-ops' of git://git.kernel.org/pub/scm/linux/kernel/git/tj/percpu
2014-10-15 07:48:18 +02:00
stacktrace.c
…
stop_machine.c
kernel/stop_machine.c: kernel-doc warning fix
2014-06-04 16:54:15 -07:00
sys_ni.c
Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-next
2014-10-08 21:40:54 -04:00
sys.c
Merge branch 'sched-core-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
2014-10-13 16:23:15 +02:00
sysctl_binary.c
Merge tag 'dmaengine-3.17' of git://git.kernel.org/pub/scm/linux/kernel/git/djbw/dmaengine
2014-10-07 20:39:25 -04:00
sysctl.c
Merge branch 'core-rcu-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
2014-10-13 15:44:12 +02:00
system_certificates.S
KEYS: correct alignment of system_certificate_list content in assembly file
2013-12-10 18:25:28 +00:00
system_keyring.c
KEYS: validate certificate trust only with builtin keys
2014-07-17 09:35:17 -04:00
task_work.c
task_work: documentation
2013-09-11 15:58:27 -07:00
taskstats.c
scheduler: Replace __get_cpu_var with this_cpu_ptr
2014-08-26 13:45:45 -04:00
test_kprobes.c
kernel/test_kprobes.c: use current logging functions
2014-08-08 15:57:18 -07:00
torture.c
torture: Address race in module cleanup
2014-09-16 13:41:06 -07:00
tracepoint.c
tracing: syscall_regfunc() should not skip kernel threads
2014-06-21 00:15:26 -04:00
tsacct.c
sched: Make task->start_time nanoseconds based
2014-07-23 10:18:05 -07:00
uid16.c
userns: Kill nsown_capable it makes the wrong thing easy
2013-08-30 23:44:11 -07:00
up.c
smp: Rename __smp_call_function_single() to smp_call_function_single_async()
2014-02-24 14:47:15 -08:00
user_namespace.c
proc: constify seq_operations
2014-08-08 15:57:22 -07:00
user-return-notifier.c
scheduler: Replace __get_cpu_var with this_cpu_ptr
2014-08-26 13:45:45 -04:00
user.c
kernel/user.c: drop unused field 'files' from user_struct
2014-06-04 16:54:16 -07:00
utsname_sysctl.c
sysctl: convert use of typedef ctl_table to struct ctl_table
2014-06-06 16:08:16 -07:00
utsname.c
namespaces: Use task_lock and not rcu to protect nsproxy
2014-07-29 18:08:50 -07:00
watchdog.c
Merge branch 'for-3.18-consistent-ops' of git://git.kernel.org/pub/scm/linux/kernel/git/tj/percpu
2014-10-15 07:48:18 +02:00
workqueue_internal.h
workqueue: rename manager_mutex to attach_mutex
2014-05-20 10:59:32 -04:00
workqueue.c
workqueue: Use cond_resched_rcu_qs macro
2014-10-06 05:58:26 -07:00