Move c_src dirs back to toplevel

[bcachefs-tools-debian] / c_src / linux / sched.c

diff --git a/c_src/linux/sched.c b/c_src/linux/sched.c
deleted file mode 100644 (file)
index 1c7198d..0000000
--- a/c_src/linux/sched.c
+++ /dev/null
@@ -1,133 +0,0 @@
-
-#include <stdio.h>
-#include <string.h>
-#include <sys/mman.h>
-#include <linux/futex.h>
-
-/* hack for mips: */
-#define CONFIG_RCU_HAVE_FUTEX 1
-#include <urcu/futex.h>
-
-#include <linux/rcupdate.h>
-#include <linux/sched.h>
-#include <linux/timer.h>
-
-__thread struct task_struct *current;
-
-void __put_task_struct(struct task_struct *t)
-{
-       pthread_join(t->thread, NULL);
-       free(t);
-}
-
-/* returns true if process was woken up, false if it was already running */
-int wake_up_process(struct task_struct *p)
-{
-       int ret = p->state != TASK_RUNNING;
-
-       p->state = TASK_RUNNING;
-       futex(&p->state, FUTEX_WAKE|FUTEX_PRIVATE_FLAG,
-             INT_MAX, NULL, NULL, 0);
-       return ret;
-}
-
-void schedule(void)
-{
-       int v;
-
-       rcu_quiescent_state();
-
-       while ((v = READ_ONCE(current->state)) != TASK_RUNNING)
-               futex(&current->state, FUTEX_WAIT|FUTEX_PRIVATE_FLAG,
-                     v, NULL, NULL, 0);
-}
-
-struct process_timer {
-       struct timer_list timer;
-       struct task_struct *task;
-};
-
-static void process_timeout(struct timer_list *t)
-{
-       struct process_timer *timeout =
-               container_of(t, struct process_timer, timer);
-
-       wake_up_process(timeout->task);
-}
-
-long schedule_timeout(long timeout)
-{
-       struct process_timer timer;
-       unsigned long expire;
-
-       switch (timeout)
-       {
-       case MAX_SCHEDULE_TIMEOUT:
-               /*
-                * These two special cases are useful to be comfortable
-                * in the caller. Nothing more. We could take
-                * MAX_SCHEDULE_TIMEOUT from one of the negative value
-                * but I' d like to return a valid offset (>=0) to allow
-                * the caller to do everything it want with the retval.
-                */
-               schedule();
-               goto out;
-       default:
-               /*
-                * Another bit of PARANOID. Note that the retval will be
-                * 0 since no piece of kernel is supposed to do a check
-                * for a negative retval of schedule_timeout() (since it
-                * should never happens anyway). You just have the printk()
-                * that will tell you if something is gone wrong and where.
-                */
-               if (timeout < 0) {
-                       fprintf(stderr, "schedule_timeout: wrong timeout "
-                               "value %lx\n", timeout);
-                       current->state = TASK_RUNNING;
-                       goto out;
-               }
-       }
-
-       expire = timeout + jiffies;
-
-       timer.task = current;
-       timer_setup_on_stack(&timer.timer, process_timeout, 0);
-       mod_timer(&timer.timer, expire);
-       schedule();
-       del_timer_sync(&timer.timer);
-
-       timeout = expire - jiffies;
-out:
-       return timeout < 0 ? 0 : timeout;
-}
-
-__attribute__((constructor(101)))
-static void sched_init(void)
-{
-       struct task_struct *p = malloc(sizeof(*p));
-
-       memset(p, 0, sizeof(*p));
-
-       p->state        = TASK_RUNNING;
-       atomic_set(&p->usage, 1);
-       init_completion(&p->exited);
-
-       current = p;
-
-       rcu_init();
-       rcu_register_thread();
-}
-
-#ifndef SYS_getrandom
-#include <fcntl.h>
-#include <sys/stat.h>
-#include <sys/types.h>
-int urandom_fd;
-
-__attribute__((constructor(101)))
-static void rand_init(void)
-{
-       urandom_fd = open("/dev/urandom", O_RDONLY);
-       BUG_ON(urandom_fd < 0);
-}
-#endif