*
* You should have received a copy of the GNU General Public License
* version 2 along with this program; If not, see
- * http://www.sun.com/software/products/lustre/docs/GPLv2.pdf
- *
- * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,
- * CA 95054 USA or visit www.sun.com if you need additional information or
- * have any questions.
+ * http://www.gnu.org/licenses/gpl-2.0.html
*
* GPL HEADER END
*/
*/
#define DEBUG_SUBSYSTEM S_LNET
+
+#include <linux/kallsyms.h>
#include <linux/module.h>
#include <linux/kernel.h>
-#include <linux/fs_struct.h>
+#include <linux/fs.h>
#include <linux/sched.h>
-
-#include <libcfs/libcfs.h>
+#ifdef HAVE_SCHED_HEADERS
+#include <linux/sched/mm.h>
+#endif
+#include <linux/uaccess.h>
#if defined(CONFIG_KGDB)
#include <asm/kgdb.h>
#endif
-void cfs_init_timer(struct timer_list *t)
-{
- init_timer(t);
-}
-EXPORT_SYMBOL(cfs_init_timer);
+#include <libcfs/linux/linux-time.h>
+#include <libcfs/linux/linux-wait.h>
-void cfs_timer_init(struct timer_list *t, cfs_timer_func_t *func, void *arg)
+#ifndef HAVE_KTIME_GET_TS64
+void ktime_get_ts64(struct timespec64 *ts)
{
- init_timer(t);
- t->function = func;
- t->data = (unsigned long)arg;
-}
-EXPORT_SYMBOL(cfs_timer_init);
+ struct timespec now;
-void cfs_timer_arm(struct timer_list *t, cfs_time_t deadline)
-{
- mod_timer(t, deadline);
+ ktime_get_ts(&now);
+ *ts = timespec_to_timespec64(now);
}
-EXPORT_SYMBOL(cfs_timer_arm);
+EXPORT_SYMBOL(ktime_get_ts64);
+#endif /* HAVE_KTIME_GET_TS64 */
-void cfs_timer_disarm(struct timer_list *t)
+#ifndef HAVE_KTIME_GET_REAL_TS64
+void ktime_get_real_ts64(struct timespec64 *ts)
{
- del_timer(t);
+ struct timespec now;
+
+ getnstimeofday(&now);
+ *ts = timespec_to_timespec64(now);
}
-EXPORT_SYMBOL(cfs_timer_disarm);
+EXPORT_SYMBOL(ktime_get_real_ts64);
+#endif /* HAVE_KTIME_GET_REAL_TS64 */
-int cfs_timer_is_armed(struct timer_list *t)
+#ifndef HAVE_KTIME_GET_REAL_SECONDS
+/*
+ * Get the seconds portion of CLOCK_REALTIME (wall clock).
+ * This is the clock that can be altered by NTP and is
+ * independent of a reboot.
+ */
+time64_t ktime_get_real_seconds(void)
{
- return timer_pending(t);
+ return (time64_t)get_seconds();
}
-EXPORT_SYMBOL(cfs_timer_is_armed);
+EXPORT_SYMBOL(ktime_get_real_seconds);
+#endif /* HAVE_KTIME_GET_REAL_SECONDS */
-cfs_time_t cfs_timer_deadline(struct timer_list *t)
+#ifndef HAVE_KTIME_GET_SECONDS
+/*
+ * Get the seconds portion of CLOCK_MONOTONIC
+ * This clock is immutable and is reset across
+ * reboots. For older platforms this is a
+ * wrapper around get_seconds which is valid
+ * until 2038. By that time this will be gone
+ * one would hope.
+ */
+time64_t ktime_get_seconds(void)
{
- return t->expires;
+ struct timespec64 now;
+
+ ktime_get_ts64(&now);
+ return now.tv_sec;
}
-EXPORT_SYMBOL(cfs_timer_deadline);
+EXPORT_SYMBOL(ktime_get_seconds);
+#endif /* HAVE_KTIME_GET_SECONDS */
-#ifndef HAVE_KTIME_GET_REAL_TS64
-void ktime_get_real_ts64(struct timespec64 *ts)
+static int (*cfs_apply_workqueue_attrs_t)(struct workqueue_struct *wq,
+ const struct workqueue_attrs *attrs);
+
+int cfs_apply_workqueue_attrs(struct workqueue_struct *wq,
+ const struct workqueue_attrs *attrs)
{
- *ts = timespec_to_timespec64(CURRENT_TIME);
+ if (cfs_apply_workqueue_attrs_t)
+ return cfs_apply_workqueue_attrs_t(wq, attrs);
+ return 0;
}
-EXPORT_SYMBOL(ktime_get_real_ts64);
-#endif /* HAVE_KTIME_GET_REAL_TS64 */
+EXPORT_SYMBOL_GPL(cfs_apply_workqueue_attrs);
-sigset_t
-cfs_block_allsigs(void)
+#ifndef HAVE_XARRAY_SUPPORT
+struct kmem_cache (*radix_tree_node_cachep);
+#endif
+
+void __init cfs_arch_init(void)
{
- unsigned long flags;
- sigset_t old;
-
- spin_lock_irqsave(¤t->sighand->siglock, flags);
- old = current->blocked;
- sigfillset(¤t->blocked);
- recalc_sigpending();
- spin_unlock_irqrestore(¤t->sighand->siglock, flags);
- return old;
+#ifndef HAVE_WAIT_VAR_EVENT
+ wait_bit_init();
+#endif
+ cfs_apply_workqueue_attrs_t =
+ (void *)kallsyms_lookup_name("apply_workqueue_attrs");
+#ifndef HAVE_XARRAY_SUPPORT
+ radix_tree_node_cachep =
+ (void *)kallsyms_lookup_name("radix_tree_node_cachep");
+#endif
}
-EXPORT_SYMBOL(cfs_block_allsigs);
-sigset_t cfs_block_sigs(unsigned long sigs)
+int cfs_kernel_write(struct file *filp, const void *buf, size_t count,
+ loff_t *pos)
{
- unsigned long flags;
- sigset_t old;
-
- spin_lock_irqsave(¤t->sighand->siglock, flags);
- old = current->blocked;
- sigaddsetmask(¤t->blocked, sigs);
- recalc_sigpending();
- spin_unlock_irqrestore(¤t->sighand->siglock, flags);
- return old;
+#ifdef HAVE_NEW_KERNEL_WRITE
+ return kernel_write(filp, buf, count, pos);
+#else
+ mm_segment_t __old_fs = get_fs();
+ int rc;
+
+ set_fs(KERNEL_DS);
+ rc = vfs_write(filp, (__force const char __user *)buf, count, pos);
+ set_fs(__old_fs);
+
+ return rc;
+#endif
}
-EXPORT_SYMBOL(cfs_block_sigs);
+EXPORT_SYMBOL(cfs_kernel_write);
-/* Block all signals except for the @sigs */
-sigset_t cfs_block_sigsinv(unsigned long sigs)
+ssize_t cfs_kernel_read(struct file *file, void *buf, size_t count, loff_t *pos)
{
- unsigned long flags;
- sigset_t old;
-
- spin_lock_irqsave(¤t->sighand->siglock, flags);
- old = current->blocked;
- sigaddsetmask(¤t->blocked, ~sigs);
- recalc_sigpending();
- spin_unlock_irqrestore(¤t->sighand->siglock, flags);
- return old;
+#ifdef HAVE_KERNEL_READ_LAST_POSP
+ return kernel_read(file, buf, count, pos);
+#else
+ ssize_t size = kernel_read(file, *pos, buf, count);
+
+ if (size > 0)
+ *pos += size;
+ return size;
+#endif
}
-EXPORT_SYMBOL(cfs_block_sigsinv);
+EXPORT_SYMBOL(cfs_kernel_read);
-void
-cfs_restore_sigs(sigset_t old)
+#ifndef HAVE_KSET_FIND_OBJ
+struct kobject *kset_find_obj(struct kset *kset, const char *name)
{
- unsigned long flags;
+ struct kobject *ret = NULL;
+ struct kobject *k;
- spin_lock_irqsave(¤t->sighand->siglock, flags);
- current->blocked = old;
- recalc_sigpending();
- spin_unlock_irqrestore(¤t->sighand->siglock, flags);
+ spin_lock(&kset->list_lock);
+
+ list_for_each_entry(k, &kset->list, entry) {
+ if (kobject_name(k) && !strcmp(kobject_name(k), name)) {
+ if (kref_get_unless_zero(&k->kref))
+ ret = k;
+ break;
+ }
+ }
+
+ spin_unlock(&kset->list_lock);
+ return ret;
}
-EXPORT_SYMBOL(cfs_restore_sigs);
+EXPORT_SYMBOL_GPL(kset_find_obj);
+#endif
-void
-cfs_clear_sigpending(void)
+#ifndef HAVE_KSTRTOBOOL_FROM_USER
+int kstrtobool_from_user(const char __user *s, size_t count, bool *res)
{
- unsigned long flags;
-
- spin_lock_irqsave(¤t->sighand->siglock, flags);
- clear_tsk_thread_flag(current, TIF_SIGPENDING);
- spin_unlock_irqrestore(¤t->sighand->siglock, flags);
+ /* Longest string needed to differentiate, newline, terminator */
+ char buf[4];
+
+ count = min(count, sizeof(buf) - 1);
+ if (copy_from_user(buf, s, count))
+ return -EFAULT;
+ buf[count] = '\0';
+ return strtobool(buf, res);
}
-EXPORT_SYMBOL(cfs_clear_sigpending);
+EXPORT_SYMBOL(kstrtobool_from_user);
+#endif /* !HAVE_KSTRTOBOOL_FROM_USER */
git://git.whamcloud.com / fs / lustre-release.git / blobdiff