kern/llsync: remove module

3 files changed, 0 insertions, 220 deletions

diff --git a/test/Kconfig b/test/Kconfig
index 6a6221bb..5c3072dc 100644
--- a/test/Kconfig
+++ b/test/Kconfig
@@ -9,9 +9,6 @@ if TEST_MODULE
 choice
 	prompt "Select test module"
 
-config TEST_MODULE_LLSYNC_DEFER
-	bool "llsync_defer"
-
 config TEST_MODULE_MUTEX
 	bool "mutex"
 	select MUTEX_DEBUG
diff --git a/test/Makefile b/test/Makefile
index b7ac3d7f..96541af4 100644
--- a/test/Makefile
+++ b/test/Makefile
@@ -1,4 +1,3 @@
-x15_SOURCES-$(CONFIG_TEST_MODULE_LLSYNC_DEFER)          += test/test_llsync_defer.c
 x15_SOURCES-$(CONFIG_TEST_MODULE_MUTEX)                 += test/test_mutex.c
 x15_SOURCES-$(CONFIG_TEST_MODULE_MUTEX_PI)              += test/test_mutex_pi.c
 x15_SOURCES-$(CONFIG_TEST_MODULE_PMAP_UPDATE_MP)        += test/test_pmap_update_mp.c
diff --git a/test/test_llsync_defer.c b/test/test_llsync_defer.c
deleted file mode 100644
index b57efc29..00000000
--- a/test/test_llsync_defer.c
+++ /dev/null
@@ -1,216 +0,0 @@
-/*
- * Copyright (c) 2014 Richard Braun.
- *
- * This program is free software: you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation, either version 3 of the License, or
- * (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program.  If not, see <http://www.gnu.org/licenses/>.
- *
- *
- * This test module is a stress test, expected to never terminate, of the
- * work deferring functionality of the llsync module. It creates three
- * threads, a producer, a consumer, and a "peeker". The producer allocates
- * a page and writes it. It then transfers the page to the consumer, using
- * the llsync interface to update the global page pointer. Once at the
- * consumer, the llsync interface is used to defer the release of the page.
- * Concurrently, the peeker accesses the page and checks its content when
- * available. These accesses are performed inside a read-side critical
- * section and should therefore never fail.
- *
- * Each thread regularly prints a string to report that it's making progress.
- */
-
-#include <stddef.h>
-#include <stdio.h>
-#include <string.h>
-
-#include <kern/condition.h>
-#include <kern/error.h>
-#include <kern/init.h>
-#include <kern/kmem.h>
-#include <kern/llsync.h>
-#include <kern/macros.h>
-#include <kern/mutex.h>
-#include <kern/panic.h>
-#include <kern/thread.h>
-#include <kern/work.h>
-#include <machine/page.h>
-#include <test/test.h>
-#include <vm/vm_kmem.h>
-
-#define TEST_LOOPS_PER_PRINT 100000
-
-struct test_pdsc {
-    struct work work;
-    void *addr;
-};
-
-#define TEST_VALIDATION_BYTE 0xab
-
-static struct mutex test_lock;
-static struct condition test_condition;
-static struct test_pdsc *test_pdsc;
-
-static struct kmem_cache test_pdsc_cache;
-
-static void
-test_alloc(void *arg)
-{
-    struct test_pdsc *pdsc;
-    unsigned long i;
-
-    (void)arg;
-
-    i = 0;
-
-    mutex_lock(&test_lock);
-
-    for (;;) {
-        while (test_pdsc != NULL) {
-            condition_wait(&test_condition, &test_lock);
-        }
-
-        pdsc = kmem_cache_alloc(&test_pdsc_cache);
-
-        if (pdsc != NULL) {
-            pdsc->addr = vm_kmem_alloc(PAGE_SIZE);
-
-            if (pdsc->addr != NULL) {
-                memset(pdsc->addr, TEST_VALIDATION_BYTE, PAGE_SIZE);
-            }
-        }
-
-        llsync_store_ptr(test_pdsc, pdsc);
-        condition_signal(&test_condition);
-
-        if ((i % TEST_LOOPS_PER_PRINT) == 0) {
-            printf("alloc ");
-        }
-
-        i++;
-    }
-}
-
-static void
-test_deferred_free(struct work *work)
-{
-    struct test_pdsc *pdsc;
-
-    pdsc = structof(work, struct test_pdsc, work);
-
-    if (pdsc->addr != NULL) {
-        vm_kmem_free(pdsc->addr, PAGE_SIZE);
-    }
-
-    kmem_cache_free(&test_pdsc_cache, pdsc);
-}
-
-static void
-test_free(void *arg)
-{
-    struct test_pdsc *pdsc;
-    unsigned long i;
-
-    (void)arg;
-
-    i = 0;
-
-    mutex_lock(&test_lock);
-
-    for (;;) {
-        while (test_pdsc == NULL) {
-            condition_wait(&test_condition, &test_lock);
-        }
-
-        pdsc = test_pdsc;
-        llsync_store_ptr(test_pdsc, NULL);
-
-        if (pdsc != NULL) {
-            work_init(&pdsc->work, test_deferred_free);
-            llsync_defer(&pdsc->work);
-        }
-
-        condition_signal(&test_condition);
-
-        if ((i % TEST_LOOPS_PER_PRINT) == 0) {
-            printf("free ");
-        }
-
-        i++;
-    }
-}
-
-static void
-test_read(void *arg)
-{
-    const struct test_pdsc *pdsc;
-    const unsigned char *s;
-    unsigned long i, j;
-
-    (void)arg;
-
-    i = 0;
-
-    for (;;) {
-        llsync_read_enter();
-
-        pdsc = llsync_load_ptr(test_pdsc);
-
-        if (pdsc != NULL) {
-            s = (const unsigned char *)pdsc->addr;
-
-            if (s != NULL) {
-                for (j = 0; j < PAGE_SIZE; j++) {
-                    if (s[j] != TEST_VALIDATION_BYTE) {
-                        panic("invalid content");
-                    }
-                }
-
-                if ((i % TEST_LOOPS_PER_PRINT) == 0) {
-                    printf("read ");
-                }
-
-                i++;
-            }
-        }
-
-        llsync_read_exit();
-    }
-}
-
-void __init
-test_setup(void)
-{
-    struct thread_attr attr;
-    struct thread *thread;
-    int error;
-
-    condition_init(&test_condition);
-    mutex_init(&test_lock);
-
-    kmem_cache_init(&test_pdsc_cache, "test_pdsc",
-                    sizeof(struct test_pdsc), 0, NULL, 0);
-
-    thread_attr_init(&attr, THREAD_KERNEL_PREFIX "test_alloc");
-    thread_attr_set_detached(&attr);
-    error = thread_create(&thread, &attr, test_alloc, NULL);
-    error_check(error, "thread_create");
-
-    thread_attr_init(&attr, THREAD_KERNEL_PREFIX "test_free");
-    thread_attr_set_detached(&attr);
-    error = thread_create(&thread, &attr, test_free, NULL);
-    error_check(error, "thread_create");
-
-    thread_attr_init(&attr, THREAD_KERNEL_PREFIX "test_read");
-    thread_attr_set_detached(&attr);
-    error = thread_create(&thread, &attr, test_read, NULL);
-    error_check(error, "thread_create");
-}