xenpaging: remove domain_id and mfn from struct xenpaging_victim

Remove unused member 'mfn' from struct xenpaging_victim.

xenpaging operates on a single guest, so it needs only a single
domain_id.  Remove domain_id from struct xenpaging_victim and use the
one from paging->mem_event where needed. Its not used in the policy.

This saves 4MB runtime data with a 1GB pagefile.

Signed-off-by: Olaf Hering <olaf@aepfle.de>

1 files changed, 3 insertions, 7 deletions

diff --git a/tools/xenpaging/policy_default.c b/tools/xenpaging/policy_default.c
index e1e727991d..2ab96b79c5 100644
--- a/tools/xenpaging/policy_default.c
+++ b/tools/xenpaging/policy_default.c
@@ -67,16 +67,12 @@ int policy_init(xenpaging_t *paging)
     return rc;
 }
 
-int policy_choose_victim(xenpaging_t *paging, domid_t domain_id,
-                         xenpaging_victim_t *victim)
+int policy_choose_victim(xenpaging_t *paging, xenpaging_victim_t *victim)
 {
     xc_interface *xch = paging->xc_handle;
     unsigned long wrap = current_gfn;
     ASSERT(victim != NULL);
 
-    /* Domain to pick on */
-    victim->domain_id = domain_id;
-
     do
     {
         current_gfn++;
@@ -96,13 +92,13 @@ int policy_choose_victim(xenpaging_t *paging, domid_t domain_id,
     return 0;
 }
 
-void policy_notify_paged_out(domid_t domain_id, unsigned long gfn)
+void policy_notify_paged_out(unsigned long gfn)
 {
     set_bit(gfn, bitmap);
     clear_bit(gfn, unconsumed);
 }
 
-void policy_notify_paged_in(domid_t domain_id, unsigned long gfn)
+void policy_notify_paged_in(unsigned long gfn)
 {
     unsigned long old_gfn = mru[i_mru & (MRU_SIZE - 1)];