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authorLinus Torvalds <torvalds@linux-foundation.org>2014-10-15 07:48:18 +0200
committerLinus Torvalds <torvalds@linux-foundation.org>2014-10-15 07:48:18 +0200
commit0429fbc0bdc297d64188483ba029a23773ae07b0 (patch)
tree67de46978c90f37540dd6ded1db20eb53a569030 /kernel/sched
parent6929c358972facf2999f8768815c40dd88514fc2 (diff)
parent513d1a2884a49654f368b5fa25ef186e976bdada (diff)
downloadop-kernel-dev-0429fbc0bdc297d64188483ba029a23773ae07b0.zip
op-kernel-dev-0429fbc0bdc297d64188483ba029a23773ae07b0.tar.gz
Merge branch 'for-3.18-consistent-ops' of git://git.kernel.org/pub/scm/linux/kernel/git/tj/percpu
Pull percpu consistent-ops changes from Tejun Heo: "Way back, before the current percpu allocator was implemented, static and dynamic percpu memory areas were allocated and handled separately and had their own accessors. The distinction has been gone for many years now; however, the now duplicate two sets of accessors remained with the pointer based ones - this_cpu_*() - evolving various other operations over time. During the process, we also accumulated other inconsistent operations. This pull request contains Christoph's patches to clean up the duplicate accessor situation. __get_cpu_var() uses are replaced with with this_cpu_ptr() and __this_cpu_ptr() with raw_cpu_ptr(). Unfortunately, the former sometimes is tricky thanks to C being a bit messy with the distinction between lvalues and pointers, which led to a rather ugly solution for cpumask_var_t involving the introduction of this_cpu_cpumask_var_ptr(). This converts most of the uses but not all. Christoph will follow up with the remaining conversions in this merge window and hopefully remove the obsolete accessors" * 'for-3.18-consistent-ops' of git://git.kernel.org/pub/scm/linux/kernel/git/tj/percpu: (38 commits) irqchip: Properly fetch the per cpu offset percpu: Resolve ambiguities in __get_cpu_var/cpumask_var_t -fix ia64: sn_nodepda cannot be assigned to after this_cpu conversion. Use __this_cpu_write. percpu: Resolve ambiguities in __get_cpu_var/cpumask_var_t Revert "powerpc: Replace __get_cpu_var uses" percpu: Remove __this_cpu_ptr clocksource: Replace __this_cpu_ptr with raw_cpu_ptr sparc: Replace __get_cpu_var uses avr32: Replace __get_cpu_var with __this_cpu_write blackfin: Replace __get_cpu_var uses tile: Use this_cpu_ptr() for hardware counters tile: Replace __get_cpu_var uses powerpc: Replace __get_cpu_var uses alpha: Replace __get_cpu_var ia64: Replace __get_cpu_var uses s390: cio driver &__get_cpu_var replacements s390: Replace __get_cpu_var uses mips: Replace __get_cpu_var uses MIPS: Replace __get_cpu_var uses in FPU emulator. arm: Replace __this_cpu_ptr with raw_cpu_ptr ...
Diffstat (limited to 'kernel/sched')
-rw-r--r--kernel/sched/clock.c2
-rw-r--r--kernel/sched/deadline.c2
-rw-r--r--kernel/sched/fair.c2
-rw-r--r--kernel/sched/rt.c2
-rw-r--r--kernel/sched/sched.h4
5 files changed, 6 insertions, 6 deletions
diff --git a/kernel/sched/clock.c b/kernel/sched/clock.c
index 3ef6451..c27e4f8 100644
--- a/kernel/sched/clock.c
+++ b/kernel/sched/clock.c
@@ -134,7 +134,7 @@ static DEFINE_PER_CPU_SHARED_ALIGNED(struct sched_clock_data, sched_clock_data);
static inline struct sched_clock_data *this_scd(void)
{
- return &__get_cpu_var(sched_clock_data);
+ return this_cpu_ptr(&sched_clock_data);
}
static inline struct sched_clock_data *cpu_sdc(int cpu)
diff --git a/kernel/sched/deadline.c b/kernel/sched/deadline.c
index abfaf3d..256e577 100644
--- a/kernel/sched/deadline.c
+++ b/kernel/sched/deadline.c
@@ -1153,7 +1153,7 @@ static DEFINE_PER_CPU(cpumask_var_t, local_cpu_mask_dl);
static int find_later_rq(struct task_struct *task)
{
struct sched_domain *sd;
- struct cpumask *later_mask = __get_cpu_var(local_cpu_mask_dl);
+ struct cpumask *later_mask = this_cpu_cpumask_var_ptr(local_cpu_mask_dl);
int this_cpu = smp_processor_id();
int best_cpu, cpu = task_cpu(task);
diff --git a/kernel/sched/fair.c b/kernel/sched/fair.c
index b78280c..0b069bf 100644
--- a/kernel/sched/fair.c
+++ b/kernel/sched/fair.c
@@ -6615,7 +6615,7 @@ static int load_balance(int this_cpu, struct rq *this_rq,
struct sched_group *group;
struct rq *busiest;
unsigned long flags;
- struct cpumask *cpus = __get_cpu_var(load_balance_mask);
+ struct cpumask *cpus = this_cpu_cpumask_var_ptr(load_balance_mask);
struct lb_env env = {
.sd = sd,
diff --git a/kernel/sched/rt.c b/kernel/sched/rt.c
index 87ea5bf..d024e6c 100644
--- a/kernel/sched/rt.c
+++ b/kernel/sched/rt.c
@@ -1525,7 +1525,7 @@ static DEFINE_PER_CPU(cpumask_var_t, local_cpu_mask);
static int find_lowest_rq(struct task_struct *task)
{
struct sched_domain *sd;
- struct cpumask *lowest_mask = __get_cpu_var(local_cpu_mask);
+ struct cpumask *lowest_mask = this_cpu_cpumask_var_ptr(local_cpu_mask);
int this_cpu = smp_processor_id();
int cpu = task_cpu(task);
diff --git a/kernel/sched/sched.h b/kernel/sched/sched.h
index 6130251..24156c84 100644
--- a/kernel/sched/sched.h
+++ b/kernel/sched/sched.h
@@ -663,10 +663,10 @@ static inline int cpu_of(struct rq *rq)
DECLARE_PER_CPU_SHARED_ALIGNED(struct rq, runqueues);
#define cpu_rq(cpu) (&per_cpu(runqueues, (cpu)))
-#define this_rq() (&__get_cpu_var(runqueues))
+#define this_rq() this_cpu_ptr(&runqueues)
#define task_rq(p) cpu_rq(task_cpu(p))
#define cpu_curr(cpu) (cpu_rq(cpu)->curr)
-#define raw_rq() (&__raw_get_cpu_var(runqueues))
+#define raw_rq() raw_cpu_ptr(&runqueues)
static inline u64 rq_clock(struct rq *rq)
{
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