[Xen-devel] [PATCH v4 11/15] tmem: cleanup: drop useless functions from head file

[Bob Liu <lliubbo@xxxxxxxxx>]

They are several one line functions in tmem_xen.h which are useless, this patch
embeded them into tmem.c directly.
Also modify void *tmem in struct domain to struct client *tmem_client in order
to make things more straightforward.

Signed-off-by: Bob Liu <bob.liu@xxxxxxxxxx>
---
 xen/common/domain.c        |    4 ++--
 xen/common/tmem.c          |   24 ++++++++++++------------
 xen/include/xen/sched.h    |    2 +-
 xen/include/xen/tmem_xen.h |   30 +-----------------------------
 4 files changed, 16 insertions(+), 44 deletions(-)

diff --git a/xen/common/domain.c b/xen/common/domain.c
index 2cbc489..2636fc9 100644
--- a/xen/common/domain.c
+++ b/xen/common/domain.c
@@ -528,9 +528,9 @@ int domain_kill(struct domain *d)
         spin_barrier(&d->domain_lock);
         evtchn_destroy(d);
         gnttab_release_mappings(d);
-        tmem_destroy(d->tmem);
+        tmem_destroy(d->tmem_client);
         domain_set_outstanding_pages(d, 0);
-        d->tmem = NULL;
+        d->tmem_client = NULL;
         /* fallthrough */
     case DOMDYING_dying:
         rc = domain_relinquish_resources(d);
diff --git a/xen/common/tmem.c b/xen/common/tmem.c
index 5bf5f04..2659651 100644
--- a/xen/common/tmem.c
+++ b/xen/common/tmem.c
@@ -1206,7 +1206,7 @@ static struct client *client_create(domid_t cli_id)
         goto fail;
     }
     if ( !d->is_dying ) {
-        d->tmem = client;
+        d->tmem_client = client;
        client->domain = d;
     }
     rcu_unlock_domain(d);
@@ -1324,7 +1324,7 @@ obj_unlock:
 
 static int tmem_evict(void)
 {
-    struct client *client = tmem_client_from_current();
+    struct client *client = current->domain->tmem_client;
     struct tmem_page_descriptor *pgp = NULL, *pgp2, *pgp_del;
     struct tmem_object_root *obj;
     struct tmem_pool *pool;
@@ -1761,7 +1761,7 @@ static int do_tmem_get(struct tmem_pool *pool, struct oid 
*oidp, uint32_t index,
             list_del(&pgp->us.client_eph_pages);
             
list_add_tail(&pgp->us.client_eph_pages,&client->ephemeral_page_list);
             spin_unlock(&eph_lists_spinlock);
-            obj->last_client = tmem_get_cli_id_from_current();
+            obj->last_client = current->domain->domain_id;
         }
     }
     if ( obj != NULL )
@@ -1836,7 +1836,7 @@ out:
 
 static int do_tmem_destroy_pool(uint32_t pool_id)
 {
-    struct client *client = tmem_client_from_current();
+    struct client *client = current->domain->tmem_client;
     struct tmem_pool *pool;
 
     if ( client->pools == NULL )
@@ -1867,7 +1867,7 @@ static int do_tmem_new_pool(domid_t this_cli_id,
     int i;
 
     if ( this_cli_id == TMEM_CLI_ID_NULL )
-        cli_id = tmem_get_cli_id_from_current();
+        cli_id = current->domain->domain_id;
     else
         cli_id = this_cli_id;
     tmem_client_info("tmem: allocating %s-%s tmem pool for %s=%d...",
@@ -1908,7 +1908,7 @@ static int do_tmem_new_pool(domid_t this_cli_id,
     }
     else
     {
-        client = tmem_client_from_current();
+        client = current->domain->tmem_client;
         ASSERT(client != NULL);
         for ( d_poolid = 0; d_poolid < MAX_POOLS_PER_DOMAIN; d_poolid++ )
             if ( client->pools[d_poolid] == NULL )
@@ -2511,7 +2511,7 @@ static int do_tmem_control(struct tmem_op *op)
     uint32_t subop = op->u.ctrl.subop;
     struct oid *oidp = (struct oid *)(&op->u.ctrl.oid[0]);
 
-    if (!tmem_current_is_privileged())
+    if ( xsm_tmem_control(XSM_PRIV) )
         return -EPERM;
 
     switch(subop)
@@ -2583,7 +2583,7 @@ static int do_tmem_control(struct tmem_op *op)
 long do_tmem_op(tmem_cli_op_t uops)
 {
     struct tmem_op op;
-    struct client *client = tmem_client_from_current();
+    struct client *client = current->domain->tmem_client;
     struct tmem_pool *pool = NULL;
     struct oid *oidp;
     int rc = 0;
@@ -2595,12 +2595,12 @@ long do_tmem_op(tmem_cli_op_t uops)
     if ( !tmem_initialized )
         return -ENODEV;
 
-    if ( !tmem_current_permitted() )
+    if ( xsm_tmem_op(XSM_HOOK) )
         return -EPERM;
 
     total_tmem_ops++;
 
-    if ( client != NULL && tmem_client_is_dying(client) )
+    if ( client != NULL && client->domain->is_dying )
     {
         rc = -ENODEV;
  simple_error:
@@ -2640,7 +2640,7 @@ long do_tmem_op(tmem_cli_op_t uops)
     {
         write_lock(&tmem_rwlock);
         write_lock_set = 1;
-        if ( (client = client_create(tmem_get_cli_id_from_current())) == NULL )
+        if ( (client = client_create(current->domain->domain_id)) == NULL )
         {
             tmem_client_err("tmem: can't create tmem structure for %s\n",
                            tmem_client_str);
@@ -2732,7 +2732,7 @@ void tmem_destroy(void *v)
     if ( client == NULL )
         return;
 
-    if ( !tmem_client_is_dying(client) )
+    if ( !client->domain->is_dying )
     {
         printk("tmem: tmem_destroy can only destroy dying client\n");
         return;
diff --git a/xen/include/xen/sched.h b/xen/include/xen/sched.h
index cbdf377..53ad32f 100644
--- a/xen/include/xen/sched.h
+++ b/xen/include/xen/sched.h
@@ -400,7 +400,7 @@ struct domain
     spinlock_t hypercall_deadlock_mutex;
 
     /* transcendent memory, auto-allocated on first tmem op by each domain */
-    void *tmem;
+    struct client *tmem_client;
 
     struct lock_profile_qhead profile_head;
 
diff --git a/xen/include/xen/tmem_xen.h b/xen/include/xen/tmem_xen.h
index 9cfa73f..11f4c2d 100644
--- a/xen/include/xen/tmem_xen.h
+++ b/xen/include/xen/tmem_xen.h
@@ -171,45 +171,17 @@ static inline unsigned long tmem_free_mb(void)
 
 /*  "Client" (==domain) abstraction */
 
-struct client;
 static inline struct client *tmem_client_from_cli_id(domid_t cli_id)
 {
     struct client *c;
     struct domain *d = rcu_lock_domain_by_id(cli_id);
     if (d == NULL)
         return NULL;
-    c = (struct client *)(d->tmem);
+    c = d->tmem_client;
     rcu_unlock_domain(d);
     return c;
 }
 
-static inline struct client *tmem_client_from_current(void)
-{
-    return (struct client *)(current->domain->tmem);
-}
-
-#define tmem_client_is_dying(_client) (!!_client->domain->is_dying)
-
-static inline domid_t tmem_get_cli_id_from_current(void)
-{
-    return current->domain->domain_id;
-}
-
-static inline struct domain *tmem_get_cli_ptr_from_current(void)
-{
-    return current->domain;
-}
-
-static inline bool_t tmem_current_permitted(void)
-{
-    return !xsm_tmem_op(XSM_HOOK);
-}
-
-static inline bool_t tmem_current_is_privileged(void)
-{
-    return !xsm_tmem_control(XSM_PRIV);
-}
-
 static inline uint8_t tmem_get_first_byte(struct page_info *pfp)
 {
     const uint8_t *p = __map_domain_page(pfp);
-- 
1.7.10.4


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