Release 4.7 kernel/locking/lglock.c
/* See include/linux/lglock.h for description */
#include <linux/module.h>
#include <linux/lglock.h>
#include <linux/cpu.h>
#include <linux/string.h>
/*
* Note there is no uninit, so lglocks cannot be defined in
* modules (but it's fine to use them from there)
* Could be added though, just undo lg_lock_init
*/
void lg_lock_init(struct lglock *lg, char *name)
{
LOCKDEP_INIT_MAP(&lg->lock_dep_map, name, &lg->lock_key, 0);
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| andi kleen | andi kleen | 31 | 100.00% | 1 | 100.00% |
| Total | 31 | 100.00% | 1 | 100.00% |
EXPORT_SYMBOL(lg_lock_init);
void lg_local_lock(struct lglock *lg)
{
arch_spinlock_t *lock;
preempt_disable();
lock_acquire_shared(&lg->lock_dep_map, 0, 0, NULL, _RET_IP_);
lock = this_cpu_ptr(lg->lock);
arch_spin_lock(lock);
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| andi kleen | andi kleen | 44 | 93.62% | 1 | 50.00% |
| michel lespinasse | michel lespinasse | 3 | 6.38% | 1 | 50.00% |
| Total | 47 | 100.00% | 2 | 100.00% |
EXPORT_SYMBOL(lg_local_lock);
void lg_local_unlock(struct lglock *lg)
{
arch_spinlock_t *lock;
lock_release(&lg->lock_dep_map, 1, _RET_IP_);
lock = this_cpu_ptr(lg->lock);
arch_spin_unlock(lock);
preempt_enable();
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| andi kleen | andi kleen | 42 | 97.67% | 1 | 50.00% |
| michel lespinasse | michel lespinasse | 1 | 2.33% | 1 | 50.00% |
| Total | 43 | 100.00% | 2 | 100.00% |
EXPORT_SYMBOL(lg_local_unlock);
void lg_local_lock_cpu(struct lglock *lg, int cpu)
{
arch_spinlock_t *lock;
preempt_disable();
lock_acquire_shared(&lg->lock_dep_map, 0, 0, NULL, _RET_IP_);
lock = per_cpu_ptr(lg->lock, cpu);
arch_spin_lock(lock);
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| andi kleen | andi kleen | 49 | 94.23% | 1 | 50.00% |
| michel lespinasse | michel lespinasse | 3 | 5.77% | 1 | 50.00% |
| Total | 52 | 100.00% | 2 | 100.00% |
EXPORT_SYMBOL(lg_local_lock_cpu);
void lg_local_unlock_cpu(struct lglock *lg, int cpu)
{
arch_spinlock_t *lock;
lock_release(&lg->lock_dep_map, 1, _RET_IP_);
lock = per_cpu_ptr(lg->lock, cpu);
arch_spin_unlock(lock);
preempt_enable();
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| andi kleen | andi kleen | 47 | 97.92% | 1 | 50.00% |
| michel lespinasse | michel lespinasse | 1 | 2.08% | 1 | 50.00% |
| Total | 48 | 100.00% | 2 | 100.00% |
EXPORT_SYMBOL(lg_local_unlock_cpu);
void lg_double_lock(struct lglock *lg, int cpu1, int cpu2)
{
BUG_ON(cpu1 == cpu2);
/* lock in cpu order, just like lg_global_lock */
if (cpu2 < cpu1)
swap(cpu1, cpu2);
preempt_disable();
lock_acquire_shared(&lg->lock_dep_map, 0, 0, NULL, _RET_IP_);
arch_spin_lock(per_cpu_ptr(lg->lock, cpu1));
arch_spin_lock(per_cpu_ptr(lg->lock, cpu2));
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| peter zijlstra | peter zijlstra | 80 | 100.00% | 1 | 100.00% |
| Total | 80 | 100.00% | 1 | 100.00% |
void lg_double_unlock(struct lglock *lg, int cpu1, int cpu2)
{
lock_release(&lg->lock_dep_map, 1, _RET_IP_);
arch_spin_unlock(per_cpu_ptr(lg->lock, cpu1));
arch_spin_unlock(per_cpu_ptr(lg->lock, cpu2));
preempt_enable();
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| peter zijlstra | peter zijlstra | 55 | 100.00% | 1 | 100.00% |
| Total | 55 | 100.00% | 1 | 100.00% |
void lg_global_lock(struct lglock *lg)
{
int i;
preempt_disable();
lock_acquire_exclusive(&lg->lock_dep_map, 0, 0, NULL, _RET_IP_);
for_each_possible_cpu(i) {
arch_spinlock_t *lock;
lock = per_cpu_ptr(lg->lock, i);
arch_spin_lock(lock);
}
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| andi kleen | andi kleen | 55 | 94.83% | 1 | 50.00% |
| michel lespinasse | michel lespinasse | 3 | 5.17% | 1 | 50.00% |
| Total | 58 | 100.00% | 2 | 100.00% |
EXPORT_SYMBOL(lg_global_lock);
void lg_global_unlock(struct lglock *lg)
{
int i;
lock_release(&lg->lock_dep_map, 1, _RET_IP_);
for_each_possible_cpu(i) {
arch_spinlock_t *lock;
lock = per_cpu_ptr(lg->lock, i);
arch_spin_unlock(lock);
}
preempt_enable();
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| andi kleen | andi kleen | 53 | 98.15% | 1 | 50.00% |
| michel lespinasse | michel lespinasse | 1 | 1.85% | 1 | 50.00% |
| Total | 54 | 100.00% | 2 | 100.00% |
EXPORT_SYMBOL(lg_global_unlock);
Overall Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| andi kleen | andi kleen | 370 | 71.57% | 1 | 33.33% |
| peter zijlstra | peter zijlstra | 135 | 26.11% | 1 | 33.33% |
| michel lespinasse | michel lespinasse | 12 | 2.32% | 1 | 33.33% |
| Total | 517 | 100.00% | 3 | 100.00% |
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