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scheduler: Replace __get_cpu_var with this_cpu_ptr 

Convert all uses of __get_cpu_var for address calculation to use
this_cpu_ptr instead.

[Uses of __get_cpu_var with cpumask_var_t are no longer
handled by this patch]

Cc: Peter Zijlstra <peterz@infradead.org>
Acked-by: Ingo Molnar <mingo@kernel.org>
Signed-off-by: Christoph Lameter <cl@linux.com>
Signed-off-by: Tejun Heo <tj@kernel.org>
This commit is contained in:
Christoph Lameter 2014-08-17 12:30:27 -05:00 committed by Tejun Heo
parent dc5df73b3a
commit 4a32fea9d7
7 changed files with 23 additions and 23 deletions
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4
include/linux/kernel_stat.h
View File

@ -44,8 +44,8 @@ DECLARE_PER_CPU(struct kernel_stat, kstat);
DECLARE_PER_CPU(struct kernel_cpustat, kernel_cpustat);
/* Must have preemption disabled for this to be meaningful. */
#define kstat_this_cpu (&__get_cpu_var(kstat))
#define kcpustat_this_cpu (&__get_cpu_var(kernel_cpustat))
#define kstat_this_cpu this_cpu_ptr(&kstat)
#define kcpustat_this_cpu this_cpu_ptr(&kernel_cpustat)
#define kstat_cpu(cpu) per_cpu(kstat, cpu)
#define kcpustat_cpu(cpu) per_cpu(kernel_cpustat, cpu)

4
kernel/events/callchain.c
View File

@ -137,7 +137,7 @@ static struct perf_callchain_entry *get_callchain_entry(int *rctx)
int cpu;
struct callchain_cpus_entries *entries;
*rctx = get_recursion_context(__get_cpu_var(callchain_recursion));
*rctx = get_recursion_context(this_cpu_ptr(callchain_recursion));
if (*rctx == -1)
return NULL;
@ -153,7 +153,7 @@ static struct perf_callchain_entry *get_callchain_entry(int *rctx)
static void
put_callchain_entry(int rctx)
{
put_recursion_context(__get_cpu_var(callchain_recursion), rctx);
put_recursion_context(this_cpu_ptr(callchain_recursion), rctx);
}
struct perf_callchain_entry *

24
kernel/events/core.c
View File

@ -239,7 +239,7 @@ static void perf_duration_warn(struct irq_work *w)
u64 avg_local_sample_len;
u64 local_samples_len;
local_samples_len = __get_cpu_var(running_sample_length);
local_samples_len = __this_cpu_read(running_sample_length);
avg_local_sample_len = local_samples_len/NR_ACCUMULATED_SAMPLES;
printk_ratelimited(KERN_WARNING
@ -261,10 +261,10 @@ void perf_sample_event_took(u64 sample_len_ns)
return;
/* decay the counter by 1 average sample */
local_samples_len = __get_cpu_var(running_sample_length);
local_samples_len = __this_cpu_read(running_sample_length);
local_samples_len -= local_samples_len/NR_ACCUMULATED_SAMPLES;
local_samples_len += sample_len_ns;
__get_cpu_var(running_sample_length) = local_samples_len;
__this_cpu_write(running_sample_length, local_samples_len);
/*
* note: this will be biased artifically low until we have
@ -877,7 +877,7 @@ static DEFINE_PER_CPU(struct list_head, rotation_list);
static void perf_pmu_rotate_start(struct pmu *pmu)
{
struct perf_cpu_context *cpuctx = this_cpu_ptr(pmu->pmu_cpu_context);
struct list_head *head = &__get_cpu_var(rotation_list);
struct list_head *head = this_cpu_ptr(&rotation_list);
WARN_ON(!irqs_disabled());
@ -2389,7 +2389,7 @@ void __perf_event_task_sched_out(struct task_struct *task,
* to check if we have to switch out PMU state.
* cgroup event are system-wide mode only
*/
if (atomic_read(&__get_cpu_var(perf_cgroup_events)))
if (atomic_read(this_cpu_ptr(&perf_cgroup_events)))
perf_cgroup_sched_out(task, next);
}
@ -2632,11 +2632,11 @@ void __perf_event_task_sched_in(struct task_struct *prev,
* to check if we have to switch in PMU state.
* cgroup event are system-wide mode only
*/
if (atomic_read(&__get_cpu_var(perf_cgroup_events)))
if (atomic_read(this_cpu_ptr(&perf_cgroup_events)))
perf_cgroup_sched_in(prev, task);
/* check for system-wide branch_stack events */
if (atomic_read(&__get_cpu_var(perf_branch_stack_events)))
if (atomic_read(this_cpu_ptr(&perf_branch_stack_events)))
perf_branch_stack_sched_in(prev, task);
}
@ -2891,7 +2891,7 @@ bool perf_event_can_stop_tick(void)
void perf_event_task_tick(void)
{
struct list_head *head = &__get_cpu_var(rotation_list);
struct list_head *head = this_cpu_ptr(&rotation_list);
struct perf_cpu_context *cpuctx, *tmp;
struct perf_event_context *ctx;
int throttled;
@ -5671,7 +5671,7 @@ static void do_perf_sw_event(enum perf_type_id type, u32 event_id,
struct perf_sample_data *data,
struct pt_regs *regs)
{
struct swevent_htable *swhash = &__get_cpu_var(swevent_htable);
struct swevent_htable *swhash = this_cpu_ptr(&swevent_htable);
struct perf_event *event;
struct hlist_head *head;
@ -5690,7 +5690,7 @@ static void do_perf_sw_event(enum perf_type_id type, u32 event_id,
int perf_swevent_get_recursion_context(void)
{
struct swevent_htable *swhash = &__get_cpu_var(swevent_htable);
struct swevent_htable *swhash = this_cpu_ptr(&swevent_htable);
return get_recursion_context(swhash->recursion);
}
@ -5698,7 +5698,7 @@ EXPORT_SYMBOL_GPL(perf_swevent_get_recursion_context);
inline void perf_swevent_put_recursion_context(int rctx)
{
struct swevent_htable *swhash = &__get_cpu_var(swevent_htable);
struct swevent_htable *swhash = this_cpu_ptr(&swevent_htable);
put_recursion_context(swhash->recursion, rctx);
}
@ -5727,7 +5727,7 @@ static void perf_swevent_read(struct perf_event *event)
static int perf_swevent_add(struct perf_event *event, int flags)
{
struct swevent_htable *swhash = &__get_cpu_var(swevent_htable);
struct swevent_htable *swhash = this_cpu_ptr(&swevent_htable);
struct hw_perf_event *hwc = &event->hw;
struct hlist_head *head;

4
kernel/sched/sched.h
View File

@ -650,10 +650,10 @@ static inline int cpu_of(struct rq *rq)
DECLARE_PER_CPU(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)
{

2
kernel/taskstats.c
View File

@ -638,7 +638,7 @@ void taskstats_exit(struct task_struct *tsk, int group_dead)
fill_tgid_exit(tsk);
}
listeners = __this_cpu_ptr(&listener_array);
listeners = raw_cpu_ptr(&listener_array);
if (list_empty(&listeners->list))
return;

4
kernel/time/tick-sched.c
View File

@ -924,7 +924,7 @@ static void tick_nohz_account_idle_ticks(struct tick_sched *ts)
*/
void tick_nohz_idle_exit(void)
{
struct tick_sched *ts = &__get_cpu_var(tick_cpu_sched);
struct tick_sched *ts = this_cpu_ptr(&tick_cpu_sched);
ktime_t now;
local_irq_disable();
@ -1041,7 +1041,7 @@ static void tick_nohz_kick_tick(struct tick_sched *ts, ktime_t now)
static inline void tick_nohz_irq_enter(void)
{
struct tick_sched *ts = &__get_cpu_var(tick_cpu_sched);
struct tick_sched *ts = this_cpu_ptr(&tick_cpu_sched);
ktime_t now;
if (!ts->idle_active && !ts->tick_stopped)

4
kernel/user-return-notifier.c
View File

@ -14,7 +14,7 @@ static DEFINE_PER_CPU(struct hlist_head, return_notifier_list);
void user_return_notifier_register(struct user_return_notifier *urn)
{
set_tsk_thread_flag(current, TIF_USER_RETURN_NOTIFY);
hlist_add_head(&urn->link, &__get_cpu_var(return_notifier_list));
hlist_add_head(&urn->link, this_cpu_ptr(&return_notifier_list));
}
EXPORT_SYMBOL_GPL(user_return_notifier_register);
@ -25,7 +25,7 @@ EXPORT_SYMBOL_GPL(user_return_notifier_register);
void user_return_notifier_unregister(struct user_return_notifier *urn)
{
hlist_del(&urn->link);
if (hlist_empty(&__get_cpu_var(return_notifier_list)))
if (hlist_empty(this_cpu_ptr(&return_notifier_list)))
clear_tsk_thread_flag(current, TIF_USER_RETURN_NOTIFY);
}
EXPORT_SYMBOL_GPL(user_return_notifier_unregister);