From b5fd066153c40a70a29caa1ea7987723ab687763 Mon Sep 17 00:00:00 2001
From: Kent Overstreet <kent.overstreet@linux.dev>
Date: Tue, 16 Jan 2024 17:00:02 -0500
Subject: Move c_src dirs back to toplevel

We just wanted c sourcefiles out of the top level, not c source
directories.

Signed-off-by: Kent Overstreet <kent.overstreet@linux.dev>
---
 c_src/linux/kthread.c | 139 --------------------------------------------------
 1 file changed, 139 deletions(-)
 delete mode 100644 c_src/linux/kthread.c

(limited to 'c_src/linux/kthread.c')

diff --git a/c_src/linux/kthread.c b/c_src/linux/kthread.c
deleted file mode 100644
index 17830e5f..00000000
--- a/c_src/linux/kthread.c
+++ /dev/null
@@ -1,139 +0,0 @@
-#include <pthread.h>
-#include <stdlib.h>
-#include <string.h>
-
-#include <linux/bitops.h>
-#include <linux/kthread.h>
-#include <linux/rcupdate.h>
-#include <linux/sched.h>
-
-#include "tools-util.h"
-
-enum KTHREAD_BITS {
-	KTHREAD_IS_PER_CPU = 0,
-	KTHREAD_SHOULD_STOP,
-	KTHREAD_SHOULD_PARK,
-	KTHREAD_IS_PARKED,
-};
-
-static void *kthread_start_fn(void *data)
-{
-	rcu_register_thread();
-
-	current = data;
-	schedule();
-	current->thread_fn(current->thread_data);
-
-	complete(&current->exited);
-	put_task_struct(current);
-	rcu_unregister_thread();
-	return NULL;
-}
-
-/**
- * kthread_create_on_node - create a kthread.
- * @threadfn: the function to run until signal_pending(current).
- * @data: data ptr for @threadfn.
- * @node: task and thread structures for the thread are allocated on this node
- * @namefmt: printf-style name for the thread.
- *
- * Description: This helper function creates and names a kernel
- * thread.  The thread will be stopped: use wake_up_process() to start
- * it.  See also kthread_run().  The new thread has SCHED_NORMAL policy and
- * is affine to all CPUs.
- *
- * If thread is going to be bound on a particular cpu, give its node
- * in @node, to get NUMA affinity for kthread stack, or else give NUMA_NO_NODE.
- * When woken, the thread will run @threadfn() with @data as its
- * argument. @threadfn() can either call do_exit() directly if it is a
- * standalone thread for which no one will call kthread_stop(), or
- * return when 'kthread_should_stop()' is true (which means
- * kthread_stop() has been called).  The return value should be zero
- * or a negative error number; it will be passed to kthread_stop().
- *
- * Returns a task_struct or ERR_PTR(-ENOMEM) or ERR_PTR(-EINTR).
- */
-struct task_struct *kthread_create(int (*thread_fn)(void *data),
-				   void *thread_data,
-				   const char namefmt[], ...)
-{
-	va_list args;
-	struct task_struct *p = malloc(sizeof(*p));
-	int ret;
-
-	memset(p, 0, sizeof(*p));
-
-	va_start(args, namefmt);
-	vsnprintf(p->comm, sizeof(p->comm), namefmt, args);
-	va_end(args);
-
-	p->flags	|= PF_KTHREAD;
-	p->thread_fn	= thread_fn;
-	p->thread_data	= thread_data;
-	p->state	= TASK_UNINTERRUPTIBLE;
-	p->signal	= &p->_signal;
-	atomic_set(&p->usage, 1);
-	init_completion(&p->exited);
-	init_rwsem(&p->_signal.exec_update_lock);
-
-	pthread_attr_t attr;
-	pthread_attr_init(&attr);
-	pthread_attr_setstacksize(&attr, 32 << 10);
-
-	for (unsigned i = 0; i < 10; i++) {
-		ret = pthread_create(&p->thread, &attr, kthread_start_fn, p);
-		if (!ret)
-			break;
-
-		run_shrinkers(GFP_KERNEL, true);
-	}
-	if (ret)
-		return ERR_PTR(-ret);
-	pthread_setname_np(p->thread, p->comm);
-	return p;
-}
-
-/**
- * kthread_should_stop - should this kthread return now?
- *
- * When someone calls kthread_stop() on your kthread, it will be woken
- * and this will return true.  You should then return, and your return
- * value will be passed through to kthread_stop().
- */
-bool kthread_should_stop(void)
-{
-	return test_bit(KTHREAD_SHOULD_STOP, &current->kthread_flags);
-}
-
-bool kthread_freezable_should_stop(bool *was_frozen)
-{
-	return test_bit(KTHREAD_SHOULD_STOP, &current->kthread_flags);
-}
-
-/**
- * kthread_stop - stop a thread created by kthread_create().
- * @k: thread created by kthread_create().
- *
- * Sets kthread_should_stop() for @k to return true, wakes it, and
- * waits for it to exit. This can also be called after kthread_create()
- * instead of calling wake_up_process(): the thread will exit without
- * calling threadfn().
- *
- * If threadfn() may call do_exit() itself, the caller must ensure
- * task_struct can't go away.
- *
- * Returns the result of threadfn(), or %-EINTR if wake_up_process()
- * was never called.
- */
-int kthread_stop(struct task_struct *p)
-{
-	get_task_struct(p);
-
-	set_bit(KTHREAD_SHOULD_STOP, &p->kthread_flags);
-	wake_up_process(p);
-	wait_for_completion(&p->exited);
-
-	put_task_struct(p);
-
-	return 0;
-}
-- 
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