LU-3963 libcfs: convert obdecho,obdclass code to atomics

[fs/lustre-release.git] / lustre / obdclass / class_obd.c

diff --git a/lustre/obdclass/class_obd.c b/lustre/obdclass/class_obd.c
index af29d35..71b479a 100644 (file)
--- a/lustre/obdclass/class_obd.c
+++ b/lustre/obdclass/class_obd.c
@@ -57,7 +57,7 @@
 
 #ifndef __KERNEL__
 /* liblustre workaround */
-cfs_atomic_t libcfs_kmemory = {0};
+atomic_t libcfs_kmemory = {0};
 #endif
 
 struct obd_device *obd_devs[MAX_OBD_DEVICES];
@@ -84,7 +84,9 @@ unsigned int obd_dump_on_eviction;
 EXPORT_SYMBOL(obd_dump_on_eviction);
 unsigned int obd_max_dirty_pages = 256;
 EXPORT_SYMBOL(obd_max_dirty_pages);
-cfs_atomic_t obd_dirty_pages;
+atomic_t obd_unstable_pages;
+EXPORT_SYMBOL(obd_unstable_pages);
+atomic_t obd_dirty_pages;
 EXPORT_SYMBOL(obd_dirty_pages);
 unsigned int obd_timeout = OBD_TIMEOUT_DEFAULT;   /* seconds */
 EXPORT_SYMBOL(obd_timeout);
@@ -106,12 +108,17 @@ EXPORT_SYMBOL(at_early_margin);
 int at_extra = 30;
 EXPORT_SYMBOL(at_extra);
 
-cfs_atomic_t obd_dirty_transit_pages;
+atomic_t obd_dirty_transit_pages;
 EXPORT_SYMBOL(obd_dirty_transit_pages);
 
 char obd_jobid_var[JOBSTATS_JOBID_VAR_MAX_LEN + 1] = JOBSTATS_DISABLE;
 EXPORT_SYMBOL(obd_jobid_var);
 
+#ifdef LPROCFS
+struct lprocfs_stats *obd_memory = NULL;
+EXPORT_SYMBOL(obd_memory);
+#endif
+
 /* Get jobid of current process by reading the environment variable
  * stored in between the "env_start" & "env_end" of task struct.
  *
@@ -138,7 +145,7 @@ int lustre_get_jobid(char *jobid)
        /* Use process name + fsuid as jobid */
        if (strcmp(obd_jobid_var, JOBSTATS_PROCNAME_UID) == 0) {
                snprintf(jobid, JOBSTATS_JOBID_SIZE, "%s.%u",
-                        cfs_curproc_comm(), cfs_curproc_fsuid());
+                        current_comm(), current_fsuid());
                RETURN(0);
        }
 
@@ -184,7 +191,7 @@ int obd_alloc_fail(const void *ptr, const char *name, const char *type,
                       obd_memory_sum(),
                       obd_pages_sum() << PAGE_CACHE_SHIFT,
                       obd_pages_sum(),
-                       cfs_atomic_read(&libcfs_kmemory));
+                       atomic_read(&libcfs_kmemory));
                return 1;
        }
        return 0;
@@ -385,7 +392,7 @@ int class_handle_ioctl(unsigned int cmd, unsigned long arg)
                 snprintf(str, len - sizeof(*data), "%3d %s %s %s %s %d",
                          (int)index, status, obd->obd_type->typ_name,
                          obd->obd_name, obd->obd_uuid.uuid,
-                         cfs_atomic_read(&obd->obd_refcount));
+                        atomic_read(&obd->obd_refcount));
                 err = obd_ioctl_popdata((void *)arg, data, len);
 
                 GOTO(out, err = 0);
@@ -448,9 +455,9 @@ int class_handle_ioctl(unsigned int cmd, unsigned long arg)
 } /* class_handle_ioctl */
 
 #ifdef __KERNEL__
-extern cfs_psdev_t obd_psdev;
+extern struct miscdevice obd_psdev;
 #else
-void *obd_psdev = NULL;
+struct miscdevice obd_psdev;
 #endif
 
 #define OBD_INIT_CHECK
@@ -575,11 +582,11 @@ int init_obdclass(void)
 
         CFS_INIT_LIST_HEAD(&obd_types);
 
-        err = cfs_psdev_register(&obd_psdev);
-        if (err) {
-                CERROR("cannot register %d err %d\n", OBD_DEV_MINOR, err);
-                return err;
-        }
+       err = misc_register(&obd_psdev);
+       if (err) {
+               CERROR("cannot register %d err %d\n", OBD_DEV_MINOR, err);
+               return err;
+       }
 
         /* This struct is already zeroed for us (static global) */
         for (i = 0; i < class_devno_max(); i++)
@@ -588,10 +595,10 @@ int init_obdclass(void)
         /* Default the dirty page cache cap to 1/2 of system memory.
          * For clients with less memory, a larger fraction is needed
          * for other purposes (mostly for BGL). */
-       if (num_physpages <= 512 << (20 - PAGE_CACHE_SHIFT))
-               obd_max_dirty_pages = num_physpages / 4;
+       if (totalram_pages <= 512 << (20 - PAGE_CACHE_SHIFT))
+               obd_max_dirty_pages = totalram_pages / 4;
        else
-               obd_max_dirty_pages = num_physpages / 2;
+               obd_max_dirty_pages = totalram_pages / 2;
 
         err = obd_init_caches();
         if (err)
@@ -690,16 +697,16 @@ static void cleanup_obdclass(void)
 
         lustre_unregister_fs();
 
-        cfs_psdev_deregister(&obd_psdev);
-        for (i = 0; i < class_devno_max(); i++) {
-                struct obd_device *obd = class_num2obd(i);
-                if (obd && obd->obd_set_up &&
-                    OBT(obd) && OBP(obd, detach)) {
-                        /* XXX should this call generic detach otherwise? */
-                        LASSERT(obd->obd_magic == OBD_DEVICE_MAGIC);
-                        OBP(obd, detach)(obd);
-                }
-        }
+       misc_deregister(&obd_psdev);
+       for (i = 0; i < class_devno_max(); i++) {
+               struct obd_device *obd = class_num2obd(i);
+               if (obd && obd->obd_set_up &&
+                   OBT(obd) && OBP(obd, detach)) {
+                       /* XXX should this call generic detach otherwise? */
+                       LASSERT(obd->obd_magic == OBD_DEVICE_MAGIC);
+                       OBP(obd, detach)(obd);
+               }
+       }
        llog_info_fini();
 #ifdef HAVE_SERVER_SUPPORT
        lu_ucred_global_fini();