move Rust sources to top level, C sources into c_src

This moves the Rust sources out of rust_src/ and into the top level.
Running the bcachefs executable out of the development tree is now:

$ ./target/release/bcachefs command
or
$ cargo run --profile release -- command

instead of "./bcachefs command".

Building and installing is still:

$ make && make install

Signed-off-by: Thomas Bertschinger <tahbertschinger@gmail.com>
Signed-off-by: Kent Overstreet <kent.overstreet@linux.dev>

1 files changed, 0 insertions, 133 deletions

diff --git a/linux/sched.c b/linux/sched.c
deleted file mode 100644
index 1c7198d2..00000000
--- a/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