From: Oleg Drokin Date: Tue, 29 Sep 2015 03:43:55 +0000 (-0400) Subject: staging/lustre/obdclass: Remove unused functions from genops.c X-Git-Tag: v5.15~14806^2~1397 X-Git-Url: http://review.tizen.org/git/?a=commitdiff_plain;h=f27355ba2f7b3f6916e9dd8e46a7a540a88eb564;p=platform%2Fkernel%2Flinux-starfive.git staging/lustre/obdclass: Remove unused functions from genops.c These functions are mostly used on the server. class_uuid2obd, get_devices_count, class_obd_list, class_conn2obd, class_conn2cliimp, class_connected_export, obd_exports_barrier, kuc_* (kernel-userspace communications). Reported-by: Arnd Bergmann Signed-off-by: Oleg Drokin Signed-off-by: Greg Kroah-Hartman --- diff --git a/drivers/staging/lustre/lustre/include/lustre_import.h b/drivers/staging/lustre/lustre/include/lustre_import.h index 079db52..660d290 100644 --- a/drivers/staging/lustre/lustre/include/lustre_import.h +++ b/drivers/staging/lustre/lustre/include/lustre_import.h @@ -374,7 +374,6 @@ extern unsigned int at_max; /* genops.c */ struct obd_export; struct obd_import *class_exp2cliimp(struct obd_export *); -struct obd_import *class_conn2cliimp(struct lustre_handle *); /** @} import */ diff --git a/drivers/staging/lustre/lustre/include/obd_class.h b/drivers/staging/lustre/lustre/include/obd_class.h index 8bfdc97..b323403 100644 --- a/drivers/staging/lustre/lustre/include/obd_class.h +++ b/drivers/staging/lustre/lustre/include/obd_class.h @@ -64,7 +64,6 @@ extern struct obd_device *obd_devs[MAX_OBD_DEVICES]; extern rwlock_t obd_dev_lock; /* OBD Operations Declarations */ -struct obd_device *class_conn2obd(struct lustre_handle *); struct obd_device *class_exp2obd(struct obd_export *); int class_handle_ioctl(unsigned int cmd, unsigned long arg); int lustre_get_jobid(char *jobid); @@ -84,15 +83,12 @@ void class_release_dev(struct obd_device *obd); int class_name2dev(const char *name); struct obd_device *class_name2obd(const char *name); int class_uuid2dev(struct obd_uuid *uuid); -struct obd_device *class_uuid2obd(struct obd_uuid *uuid); -void class_obd_list(void); struct obd_device *class_find_client_obd(struct obd_uuid *tgt_uuid, const char *typ_name, struct obd_uuid *grp_uuid); struct obd_device *class_devices_in_group(struct obd_uuid *grp_uuid, int *next); struct obd_device *class_num2obd(int num); -int get_devices_count(void); int class_notify_sptlrpc_conf(const char *fsname, int namelen); @@ -104,12 +100,6 @@ int obd_zombie_impexp_init(void); void obd_zombie_impexp_stop(void); void obd_zombie_impexp_cull(void); void obd_zombie_barrier(void); -void obd_exports_barrier(struct obd_device *obd); -int kuc_len(int payload_len); -struct kuc_hdr *kuc_ptr(void *p); -int kuc_ispayload(void *p); -void *kuc_alloc(int payload_len, int transport, int type); -void kuc_free(void *p, int payload_len); struct llog_handle; struct llog_rec_hdr; @@ -283,7 +273,6 @@ int class_connect(struct lustre_handle *conn, struct obd_device *obd, struct obd_uuid *cluuid); int class_disconnect(struct obd_export *exp); void class_fail_export(struct obd_export *exp); -int class_connected_export(struct obd_export *exp); int class_manual_cleanup(struct obd_device *obd); static inline enum obd_option exp_flags_from_obd(struct obd_device *obd) { diff --git a/drivers/staging/lustre/lustre/obdclass/genops.c b/drivers/staging/lustre/lustre/obdclass/genops.c index 059611b2..4467baa 100644 --- a/drivers/staging/lustre/lustre/obdclass/genops.c +++ b/drivers/staging/lustre/lustre/obdclass/genops.c @@ -439,16 +439,6 @@ int class_uuid2dev(struct obd_uuid *uuid) } EXPORT_SYMBOL(class_uuid2dev); -struct obd_device *class_uuid2obd(struct obd_uuid *uuid) -{ - int dev = class_uuid2dev(uuid); - - if (dev < 0) - return NULL; - return class_num2obd(dev); -} -EXPORT_SYMBOL(class_uuid2obd); - /** * Get obd device from ::obd_devs[] * @@ -478,55 +468,6 @@ struct obd_device *class_num2obd(int num) } EXPORT_SYMBOL(class_num2obd); -/** - * Get obd devices count. Device in any - * state are counted - * \retval obd device count - */ -int get_devices_count(void) -{ - int index, max_index = class_devno_max(), dev_count = 0; - - read_lock(&obd_dev_lock); - for (index = 0; index <= max_index; index++) { - struct obd_device *obd = class_num2obd(index); - - if (obd != NULL) - dev_count++; - } - read_unlock(&obd_dev_lock); - - return dev_count; -} -EXPORT_SYMBOL(get_devices_count); - -void class_obd_list(void) -{ - char *status; - int i; - - read_lock(&obd_dev_lock); - for (i = 0; i < class_devno_max(); i++) { - struct obd_device *obd = class_num2obd(i); - - if (!obd) - continue; - if (obd->obd_stopping) - status = "ST"; - else if (obd->obd_set_up) - status = "UP"; - else if (obd->obd_attached) - status = "AT"; - else - status = "--"; - LCONSOLE(D_CONFIG, "%3d %s %s %s %s %d\n", - i, status, obd->obd_type->typ_name, - obd->obd_name, obd->obd_uuid.uuid, - atomic_read(&obd->obd_refcount)); - } - read_unlock(&obd_dev_lock); -} - /* Search for a client OBD connected to tgt_uuid. If grp_uuid is specified, then only the client with that uuid is returned, otherwise any client connected to the tgt is returned. */ @@ -705,21 +646,6 @@ struct obd_device *class_exp2obd(struct obd_export *exp) } EXPORT_SYMBOL(class_exp2obd); -struct obd_device *class_conn2obd(struct lustre_handle *conn) -{ - struct obd_export *export; - - export = class_conn2export(conn); - if (export) { - struct obd_device *obd = export->exp_obd; - - class_export_put(export); - return obd; - } - return NULL; -} -EXPORT_SYMBOL(class_conn2obd); - struct obd_import *class_exp2cliimp(struct obd_export *exp) { struct obd_device *obd = exp->exp_obd; @@ -730,16 +656,6 @@ struct obd_import *class_exp2cliimp(struct obd_export *exp) } EXPORT_SYMBOL(class_exp2cliimp); -struct obd_import *class_conn2cliimp(struct lustre_handle *conn) -{ - struct obd_device *obd = class_conn2obd(conn); - - if (!obd) - return NULL; - return obd->u.cli.cl_import; -} -EXPORT_SYMBOL(class_conn2cliimp); - /* Export management functions */ static void class_export_destroy(struct obd_export *exp) { @@ -1208,21 +1124,6 @@ no_disconn: } EXPORT_SYMBOL(class_disconnect); -/* Return non-zero for a fully connected export */ -int class_connected_export(struct obd_export *exp) -{ - if (exp) { - int connected; - - spin_lock(&exp->exp_lock); - connected = exp->exp_conn_cnt > 0; - spin_unlock(&exp->exp_lock); - return connected; - } - return 0; -} -EXPORT_SYMBOL(class_connected_export); - void class_fail_export(struct obd_export *exp) { int rc, already_failed; @@ -1325,29 +1226,6 @@ void dump_exports(struct obd_device *obd, int locks) } EXPORT_SYMBOL(dump_exports); -void obd_exports_barrier(struct obd_device *obd) -{ - int waited = 2; - - LASSERT(list_empty(&obd->obd_exports)); - spin_lock(&obd->obd_dev_lock); - while (!list_empty(&obd->obd_unlinked_exports)) { - spin_unlock(&obd->obd_dev_lock); - set_current_state(TASK_UNINTERRUPTIBLE); - schedule_timeout(cfs_time_seconds(waited)); - if (waited > 5 && IS_PO2(waited)) { - LCONSOLE_WARN("%s is waiting for obd_unlinked_exports more than %d seconds. The obd refcount = %d. Is it stuck?\n", - obd->obd_name, waited, - atomic_read(&obd->obd_refcount)); - dump_exports(obd, 1); - } - waited *= 2; - spin_lock(&obd->obd_dev_lock); - } - spin_unlock(&obd->obd_dev_lock); -} -EXPORT_SYMBOL(obd_exports_barrier); - /* Total amount of zombies to be destroyed */ static int zombies_count; @@ -1558,70 +1436,3 @@ void obd_zombie_impexp_stop(void) obd_zombie_impexp_notify(); wait_for_completion(&obd_zombie_stop); } - -/***** Kernel-userspace comm helpers *******/ - -/* Get length of entire message, including header */ -int kuc_len(int payload_len) -{ - return sizeof(struct kuc_hdr) + payload_len; -} -EXPORT_SYMBOL(kuc_len); - -/* Get a pointer to kuc header, given a ptr to the payload - * @param p Pointer to payload area - * @returns Pointer to kuc header - */ -struct kuc_hdr *kuc_ptr(void *p) -{ - struct kuc_hdr *lh = ((struct kuc_hdr *)p) - 1; - - LASSERT(lh->kuc_magic == KUC_MAGIC); - return lh; -} -EXPORT_SYMBOL(kuc_ptr); - -/* Test if payload is part of kuc message - * @param p Pointer to payload area - * @returns boolean - */ -int kuc_ispayload(void *p) -{ - struct kuc_hdr *kh = ((struct kuc_hdr *)p) - 1; - - if (kh->kuc_magic == KUC_MAGIC) - return 1; - else - return 0; -} -EXPORT_SYMBOL(kuc_ispayload); - -/* Alloc space for a message, and fill in header - * @return Pointer to payload area - */ -void *kuc_alloc(int payload_len, int transport, int type) -{ - struct kuc_hdr *lh; - int len = kuc_len(payload_len); - - lh = kzalloc(len, GFP_NOFS); - if (!lh) - return ERR_PTR(-ENOMEM); - - lh->kuc_magic = KUC_MAGIC; - lh->kuc_transport = transport; - lh->kuc_msgtype = type; - lh->kuc_msglen = len; - - return (void *)(lh + 1); -} -EXPORT_SYMBOL(kuc_alloc); - -/* Takes pointer to payload area */ -inline void kuc_free(void *p, int payload_len) -{ - struct kuc_hdr *lh = kuc_ptr(p); - - kfree(lh); -} -EXPORT_SYMBOL(kuc_free);