int
lwt_init ()
{
int i;
int j;
for (i = 0; i < cfs_num_online_cpus(); i++)
if (lwt_cpus[i].lwtc_current_page != NULL)
return (-EALREADY);
LASSERT (!lwt_enabled);
/* NULL pointers, zero scalars */
memset (lwt_cpus, 0, sizeof (lwt_cpus));
lwt_pages_per_cpu =
LWT_MEMORY / (cfs_num_online_cpus() * PAGE_CACHE_SIZE);
for (i = 0; i < cfs_num_online_cpus(); i++)
for (j = 0; j < lwt_pages_per_cpu; j++) {
struct page *page = alloc_page(GFP_KERNEL);
lwt_page_t *lwtp;
if (page == NULL) {
CERROR ("Can't allocate page\n");
lwt_fini ();
return (-ENOMEM);
}
LIBCFS_ALLOC(lwtp, sizeof (*lwtp));
if (lwtp == NULL) {
CERROR ("Can't allocate lwtp\n");
__free_page(page);
lwt_fini ();
return (-ENOMEM);
}
lwtp->lwtp_page = page;
lwtp->lwtp_events = page_address(page);
memset(lwtp->lwtp_events, 0, PAGE_CACHE_SIZE);
if (j == 0) {
CFS_INIT_LIST_HEAD (&lwtp->lwtp_list);
lwt_cpus[i].lwtc_current_page = lwtp;
} else {
cfs_list_add (&lwtp->lwtp_list,
&lwt_cpus[i].lwtc_current_page->lwtp_list);
}
}
lwt_enabled = 1;
cfs_mb();
LWT_EVENT(0,0,0,0);
return (0);
}
int
lwt_control (int enable, int clear)
{
lwt_page_t *p;
int i;
int j;
if (!cfs_capable(CFS_CAP_SYS_ADMIN))
return (-EPERM);
if (!enable) {
LWT_EVENT(0,0,0,0);
lwt_enabled = 0;
cfs_mb();
/* give people some time to stop adding traces */
cfs_schedule_timeout(10);
}
for (i = 0; i < cfs_num_online_cpus(); i++) {
p = lwt_cpus[i].lwtc_current_page;
if (p == NULL)
return (-ENODATA);
if (!clear)
continue;
for (j = 0; j < lwt_pages_per_cpu; j++) {
memset(p->lwtp_events, 0, PAGE_CACHE_SIZE);
p = cfs_list_entry (p->lwtp_list.next,
lwt_page_t, lwtp_list);
}
}
if (enable) {
lwt_enabled = 1;
cfs_mb();
LWT_EVENT(0,0,0,0);
}
return (0);
}
void
cfs_trace_assertion_failed(const char *str,
const char *fn, const char *file, int line)
{
struct ptldebug_header hdr;
libcfs_panic_in_progress = 1;
libcfs_catastrophe = 1;
cfs_mb();
cfs_set_ptldebug_header(&hdr, DEBUG_SUBSYSTEM, D_EMERG, line,
CDEBUG_STACK());
cfs_print_to_console(&hdr, D_EMERG, str, strlen(str), file, fn);
LIBCFS_PANIC("Lustre debug assertion failure\n");
/* not reached */
}
/*
* Concurrency: shouldn't matter.
*/
int osd_object_init0(const struct lu_env *env, struct osd_object *obj)
{
struct osd_device *osd = osd_obj2dev(obj);
udmu_objset_t *uos = &osd->od_objset;
const struct lu_fid *fid = lu_object_fid(&obj->oo_dt.do_lu);
int rc = 0;
ENTRY;
if (obj->oo_db == NULL)
RETURN(0);
/* object exist */
rc = osd_object_sa_init(obj, uos);
if (rc)
RETURN(rc);
/* cache attrs in object */
rc = __osd_object_attr_get(env, &osd->od_objset,
obj, &obj->oo_attr);
if (rc)
RETURN(rc);
if (likely(!fid_is_acct(fid)))
/* no body operations for accounting objects */
obj->oo_dt.do_body_ops = &osd_body_ops;
/*
* initialize object before marking it existing
*/
obj->oo_dt.do_lu.lo_header->loh_attr |= obj->oo_attr.la_mode & S_IFMT;
cfs_mb();
obj->oo_dt.do_lu.lo_header->loh_attr |= LOHA_EXISTS;
RETURN(0);
}
