A: This is what you would need in your kernel code to receive notifications.
#include <linux/cpu.h>
- static int __cpuinit foobar_cpu_callback(struct notifier_block *nfb,
- unsigned long action, void *hcpu)
+ static int foobar_cpu_callback(struct notifier_block *nfb,
+ unsigned long action, void *hcpu)
{
unsigned int cpu = (unsigned long)hcpu;
return NOTIFY_OK;
}
- static struct notifier_block __cpuinitdata foobar_cpu_notifer =
+ static struct notifier_block foobar_cpu_notifer =
{
.notifier_call = foobar_cpu_callback,
};
/* Need to know about CPUs going up/down? */
#if defined(CONFIG_HOTPLUG_CPU) || !defined(MODULE)
#define cpu_notifier(fn, pri) { \
- static struct notifier_block fn##_nb __cpuinitdata = \
+ static struct notifier_block fn##_nb = \
{ .notifier_call = fn, .priority = pri }; \
register_cpu_notifier(&fn##_nb); \
}
*/
#define perf_cpu_notifier(fn) \
do { \
- static struct notifier_block fn##_nb __cpuinitdata = \
+ static struct notifier_block fn##_nb = \
{ .notifier_call = fn, .priority = CPU_PRI_PERF }; \
unsigned long cpu = smp_processor_id(); \
unsigned long flags; \
#define DELAY_CALIBRATION_TICKS ((HZ < 100) ? 1 : (HZ/100))
#define MAX_DIRECT_CALIBRATION_RETRIES 5
-static unsigned long __cpuinit calibrate_delay_direct(void)
+static unsigned long calibrate_delay_direct(void)
{
unsigned long pre_start, start, post_start;
unsigned long pre_end, end, post_end;
return 0;
}
#else
-static unsigned long __cpuinit calibrate_delay_direct(void) {return 0;}
+static unsigned long calibrate_delay_direct(void)
+{
+ return 0;
+}
#endif
/*
*/
#define LPS_PREC 8
-static unsigned long __cpuinit calibrate_delay_converge(void)
+static unsigned long calibrate_delay_converge(void)
{
/* First stage - slowly accelerate to find initial bounds */
unsigned long lpj, lpj_base, ticks, loopadd, loopadd_base, chop_limit;
* Architectures should override this function if a faster calibration
* method is available.
*/
-unsigned long __attribute__((weak)) __cpuinit calibrate_delay_is_known(void)
+unsigned long __attribute__((weak)) calibrate_delay_is_known(void)
{
return 0;
}
-void __cpuinit calibrate_delay(void)
+void calibrate_delay(void)
{
unsigned long lpj;
static bool printed;
#endif /*CONFIG_HOTPLUG_CPU*/
/* Requires cpu_add_remove_lock to be held */
-static int __cpuinit _cpu_up(unsigned int cpu, int tasks_frozen)
+static int _cpu_up(unsigned int cpu, int tasks_frozen)
{
int ret, nr_calls = 0;
void *hcpu = (void *)(long)cpu;
return ret;
}
-int __cpuinit cpu_up(unsigned int cpu)
+int cpu_up(unsigned int cpu)
{
int err = 0;
* It must be called by the arch code on the new cpu, before the new cpu
* enables interrupts and before the "boot" cpu returns from __cpu_up().
*/
-void __cpuinit notify_cpu_starting(unsigned int cpu)
+void notify_cpu_starting(unsigned int cpu)
{
unsigned long val = CPU_STARTING;
}
}
-static void __cpuinit perf_event_init_cpu(int cpu)
+static void perf_event_init_cpu(int cpu)
{
struct swevent_htable *swhash = &per_cpu(swevent_htable, cpu);
.priority = INT_MIN,
};
-static int __cpuinit
+static int
perf_cpu_notify(struct notifier_block *self, unsigned long action, void *hcpu)
{
unsigned int cpu = (long)hcpu;
}
}
-struct task_struct * __cpuinit fork_idle(int cpu)
+struct task_struct *fork_idle(int cpu)
{
struct task_struct *task;
task = copy_process(CLONE_VM, 0, 0, NULL, &init_struct_pid, 0);
/*
* Functions related to boot-time initialization:
*/
-static void __cpuinit init_hrtimers_cpu(int cpu)
+static void init_hrtimers_cpu(int cpu)
{
struct hrtimer_cpu_base *cpu_base = &per_cpu(hrtimer_bases, cpu);
int i;
#endif /* CONFIG_HOTPLUG_CPU */
-static int __cpuinit hrtimer_cpu_notify(struct notifier_block *self,
+static int hrtimer_cpu_notify(struct notifier_block *self,
unsigned long action, void *hcpu)
{
int scpu = (long)hcpu;
return NOTIFY_OK;
}
-static struct notifier_block __cpuinitdata hrtimers_nb = {
+static struct notifier_block hrtimers_nb = {
.notifier_call = hrtimer_cpu_notify,
};
* called when a new CPU comes online (or fails to come up), and ensures
* that any such output gets printed.
*/
-static int __cpuinit console_cpu_notify(struct notifier_block *self,
+static int console_cpu_notify(struct notifier_block *self,
unsigned long action, void *hcpu)
{
switch (action) {
put_cpu();
}
-static int __cpuinit profile_cpu_callback(struct notifier_block *info,
+static int profile_cpu_callback(struct notifier_block *info,
unsigned long action, void *__cpu)
{
int node, cpu = (unsigned long)__cpu;
*
* Returns the success/failure of the operation. (%NOTIFY_OK, %NOTIFY_BAD)
*/
-static int __cpuinit relay_hotcpu_callback(struct notifier_block *nb,
+static int relay_hotcpu_callback(struct notifier_block *nb,
unsigned long action,
void *hcpu)
{
debug_show_all_locks();
}
-void __cpuinit init_idle_bootup_task(struct task_struct *idle)
+void init_idle_bootup_task(struct task_struct *idle)
{
idle->sched_class = &idle_sched_class;
}
* NOTE: this function does not set the idle thread's NEED_RESCHED
* flag, to make booting more robust.
*/
-void __cpuinit init_idle(struct task_struct *idle, int cpu)
+void init_idle(struct task_struct *idle, int cpu)
{
struct rq *rq = cpu_rq(cpu);
unsigned long flags;
* migration_call - callback that gets triggered when a CPU is added.
* Here we can start up the necessary migration thread for the new CPU.
*/
-static int __cpuinit
+static int
migration_call(struct notifier_block *nfb, unsigned long action, void *hcpu)
{
int cpu = (long)hcpu;
* happens before everything else. This has to be lower priority than
* the notifier in the perf_event subsystem, though.
*/
-static struct notifier_block __cpuinitdata migration_notifier = {
+static struct notifier_block migration_notifier = {
.notifier_call = migration_call,
.priority = CPU_PRI_MIGRATION,
};
-static int __cpuinit sched_cpu_active(struct notifier_block *nfb,
+static int sched_cpu_active(struct notifier_block *nfb,
unsigned long action, void *hcpu)
{
switch (action & ~CPU_TASKS_FROZEN) {
}
}
-static int __cpuinit sched_cpu_inactive(struct notifier_block *nfb,
+static int sched_cpu_inactive(struct notifier_block *nfb,
unsigned long action, void *hcpu)
{
switch (action & ~CPU_TASKS_FROZEN) {
set_bit(NOHZ_TICK_STOPPED, nohz_flags(cpu));
}
-static int __cpuinit sched_ilb_notifier(struct notifier_block *nfb,
+static int sched_ilb_notifier(struct notifier_block *nfb,
unsigned long action, void *hcpu)
{
switch (action & ~CPU_TASKS_FROZEN) {
return NOTIFY_OK;
}
-static struct notifier_block __cpuinitdata hotplug_cfd_notifier = {
+static struct notifier_block hotplug_cfd_notifier = {
.notifier_call = hotplug_cfd,
};
*/
static DEFINE_PER_CPU(struct task_struct *, idle_threads);
-struct task_struct * __cpuinit idle_thread_get(unsigned int cpu)
+struct task_struct *idle_thread_get(unsigned int cpu)
{
struct task_struct *tsk = per_cpu(idle_threads, cpu);
}
EXPORT_SYMBOL(send_remote_softirq);
-static int __cpuinit remote_softirq_cpu_notify(struct notifier_block *self,
+static int remote_softirq_cpu_notify(struct notifier_block *self,
unsigned long action, void *hcpu)
{
/*
return NOTIFY_OK;
}
-static struct notifier_block __cpuinitdata remote_softirq_cpu_notifier = {
+static struct notifier_block remote_softirq_cpu_notifier = {
.notifier_call = remote_softirq_cpu_notify,
};
}
#endif /* CONFIG_HOTPLUG_CPU */
-static int __cpuinit cpu_callback(struct notifier_block *nfb,
+static int cpu_callback(struct notifier_block *nfb,
unsigned long action,
void *hcpu)
{
return NOTIFY_OK;
}
-static struct notifier_block __cpuinitdata cpu_nfb = {
+static struct notifier_block cpu_nfb = {
.notifier_call = cpu_callback
};
}
__setup("nohz_full=", tick_nohz_full_setup);
-static int __cpuinit tick_nohz_cpu_down_callback(struct notifier_block *nfb,
+static int tick_nohz_cpu_down_callback(struct notifier_block *nfb,
unsigned long action,
void *hcpu)
{
}
EXPORT_SYMBOL(schedule_timeout_uninterruptible);
-static int __cpuinit init_timers_cpu(int cpu)
+static int init_timers_cpu(int cpu)
{
int j;
struct tvec_base *base;
- static char __cpuinitdata tvec_base_done[NR_CPUS];
+ static char tvec_base_done[NR_CPUS];
if (!tvec_base_done[cpu]) {
static char boot_done;
}
}
-static void __cpuinit migrate_timers(int cpu)
+static void migrate_timers(int cpu)
{
struct tvec_base *old_base;
struct tvec_base *new_base;
}
#endif /* CONFIG_HOTPLUG_CPU */
-static int __cpuinit timer_cpu_notify(struct notifier_block *self,
+static int timer_cpu_notify(struct notifier_block *self,
unsigned long action, void *hcpu)
{
long cpu = (long)hcpu;
return NOTIFY_OK;
}
-static struct notifier_block __cpuinitdata timers_nb = {
+static struct notifier_block timers_nb = {
.notifier_call = timer_cpu_notify,
};
* Workqueues should be brought up before normal priority CPU notifiers.
* This will be registered high priority CPU notifier.
*/
-static int __cpuinit workqueue_cpu_up_callback(struct notifier_block *nfb,
+static int workqueue_cpu_up_callback(struct notifier_block *nfb,
unsigned long action,
void *hcpu)
{
* Workqueues should be brought down after normal priority CPU notifiers.
* This will be registered as low priority CPU notifier.
*/
-static int __cpuinit workqueue_cpu_down_callback(struct notifier_block *nfb,
+static int workqueue_cpu_down_callback(struct notifier_block *nfb,
unsigned long action,
void *hcpu)
{
any use of code/data previously in these sections would
most likely result in an oops.
In the code, functions and variables are annotated with
- __init, __cpuinit, etc. (see the full list in include/linux/init.h),
+ __init,, etc. (see the full list in include/linux/init.h),
which results in the code/data being placed in specific sections.
The section mismatch analysis is always performed after a full
kernel build, and enabling this option causes the following
* the match returned an empty filename string.
*/
-struct cpio_data __cpuinit find_cpio_data(const char *path, void *data,
+struct cpio_data find_cpio_data(const char *path, void *data,
size_t len, long *offset)
{
const size_t cpio_header_len = 8*C_NFIELDS - 2;
percpu_counter_batch = max(32, nr*2);
}
-static int __cpuinit percpu_counter_hotcpu_callback(struct notifier_block *nb,
+static int percpu_counter_hotcpu_callback(struct notifier_block *nb,
unsigned long action, void *hcpu)
{
#ifdef CONFIG_HOTPLUG_CPU
spin_unlock(&memcg->pcp_counter_lock);
}
-static int __cpuinit memcg_cpu_hotplug_callback(struct notifier_block *nb,
+static int memcg_cpu_hotplug_callback(struct notifier_block *nb,
unsigned long action,
void *hcpu)
{
ratelimit_pages = 16;
}
-static int __cpuinit
+static int
ratelimit_handler(struct notifier_block *self, unsigned long action,
void *hcpu)
{
}
}
-static struct notifier_block __cpuinitdata ratelimit_nb = {
+static struct notifier_block ratelimit_nb = {
.notifier_call = ratelimit_handler,
.next = NULL,
};
* the CPUs getting into lockstep and contending for the global cache chain
* lock.
*/
-static void __cpuinit start_cpu_timer(int cpu)
+static void start_cpu_timer(int cpu)
{
struct delayed_work *reap_work = &per_cpu(slab_reap_work, cpu);
return (n->free_objects + cachep->num - 1) / cachep->num;
}
-static void __cpuinit cpuup_canceled(long cpu)
+static void cpuup_canceled(long cpu)
{
struct kmem_cache *cachep;
struct kmem_cache_node *n = NULL;
}
}
-static int __cpuinit cpuup_prepare(long cpu)
+static int cpuup_prepare(long cpu)
{
struct kmem_cache *cachep;
struct kmem_cache_node *n = NULL;
return -ENOMEM;
}
-static int __cpuinit cpuup_callback(struct notifier_block *nfb,
+static int cpuup_callback(struct notifier_block *nfb,
unsigned long action, void *hcpu)
{
long cpu = (long)hcpu;
return notifier_from_errno(err);
}
-static struct notifier_block __cpuinitdata cpucache_notifier = {
+static struct notifier_block cpucache_notifier = {
&cpuup_callback, NULL, 0
};
* Use the cpu notifier to insure that the cpu slabs are flushed when
* necessary.
*/
-static int __cpuinit slab_cpuup_callback(struct notifier_block *nfb,
+static int slab_cpuup_callback(struct notifier_block *nfb,
unsigned long action, void *hcpu)
{
long cpu = (long)hcpu;
return NOTIFY_OK;
}
-static struct notifier_block __cpuinitdata slab_notifier = {
+static struct notifier_block slab_notifier = {
.notifier_call = slab_cpuup_callback
};
round_jiffies_relative(sysctl_stat_interval));
}
-static void __cpuinit start_cpu_timer(int cpu)
+static void start_cpu_timer(int cpu)
{
struct delayed_work *work = &per_cpu(vmstat_work, cpu);
* Use the cpu notifier to insure that the thresholds are recalculated
* when necessary.
*/
-static int __cpuinit vmstat_cpuup_callback(struct notifier_block *nfb,
+static int vmstat_cpuup_callback(struct notifier_block *nfb,
unsigned long action,
void *hcpu)
{
return NOTIFY_OK;
}
-static struct notifier_block __cpuinitdata vmstat_notifier =
+static struct notifier_block vmstat_notifier =
{ &vmstat_cpuup_callback, NULL, 0 };
#endif