smsc/xpmem rcache: refactor to use tree find() instead of iterate()

opal/class/opal_interval_tree.c

@@ -424,6 +424,8 @@ static opal_interval_tree_node_t *opal_interval_tree_find_interval(opal_interval
 static opal_interval_tree_node_t *
 opal_interval_tree_find_node(opal_interval_tree_t *tree, uint64_t low, uint64_t high, void *data)
 {
+    printf("tree find low 0x%lx high 0x%lx\n", low, high);
+
     return opal_interval_tree_find_interval(tree, tree->root.left, low, high, data);
 }
 
@@ -664,6 +666,8 @@ static void opal_interval_tree_insert_node(opal_interval_tree_t *tree,
     opal_interval_tree_node_t *n = parent->left; /* the real root of the tree */
     opal_interval_tree_node_t *nill = &tree->nill;
 
+    printf("tree insert low 0x%lx high 0x%lx\n", node->low, node->high);
+
     /* set up initial values for the node */
     node->color = OPAL_INTERVAL_TREE_COLOR_RED;
     node->parent = NULL;

opal/mca/btl/sm/btl_sm_component.c

@@ -24,6 +24,8 @@
  * Copyright (c) 2019-2021 Google, Inc. All rights reserved.
  * Copyright (c) 2021      Nanook Consulting.  All rights reserved.
  * Copyright (c) 2022      IBM Corporation.  All rights reserved.
+ * Copyright (c) 2022      Computer Architecture and VLSI Systems (CARV)
+ *                         Laboratory, ICS Forth. All rights reserved.
  * $COPYRIGHT$
  *
  * Additional copyrights may follow
@@ -437,9 +439,9 @@ void mca_btl_sm_poll_handle_frag(mca_btl_sm_hdr_t *hdr, struct mca_btl_base_endp
                                               .cbdata = reg->cbdata};
 
     if (hdr->flags & MCA_BTL_SM_FLAG_SINGLE_COPY) {
-        void *ctx = MCA_SMSC_CALL(map_peer_region, endpoint->smsc_endpoint, /*flags=*/0,
-                                  hdr->sc_iov.iov_base, hdr->sc_iov.iov_len,
-                                  &segments[1].seg_addr.pval);
+        void *ctx = MCA_SMSC_CALL(map_peer_region, endpoint->smsc_endpoint,
+                                  MCA_RCACHE_FLAGS_PERSIST, hdr->sc_iov.iov_base,
+                                  hdr->sc_iov.iov_len, &segments[1].seg_addr.pval);
         assert(NULL != ctx);
 
         segments[1].seg_len = hdr->sc_iov.iov_len;

opal/mca/smsc/xpmem/smsc_xpmem_component.c

@@ -1,6 +1,8 @@
 /* -*- Mode: C; c-basic-offset:4 ; indent-tabs-mode:nil -*- */
 /*
  * Copyright (c) 2021      Google, Inc. All rights reserved.
+ * Copyright (c) 2022      Computer Architecture and VLSI Systems (CARV)
+ *                         Laboratory, ICS Forth. All rights reserved.
  * $COPYRIGHT$
  *
  * Additional copyrights may follow
@@ -76,10 +78,7 @@ static int mca_smsc_xpmem_component_open(void)
 
 static int mca_smsc_xpmem_component_close(void)
 {
-    if (mca_smsc_xpmem_module.vma_module) {
-        OBJ_RELEASE(mca_smsc_xpmem_module.vma_module);
-    }
-
+    /* nothing to do */
     return OPAL_SUCCESS;
 }
 
@@ -161,7 +160,5 @@ static mca_smsc_module_t *mca_smsc_xpmem_component_enable(void)
     mca_smsc_xpmem_component.log_attach_align
         = opal_min(opal_max(mca_smsc_xpmem_component.log_attach_align, 12), 25);
 
-    mca_smsc_xpmem_module.vma_module = mca_rcache_base_vma_module_alloc();
-
     return &mca_smsc_xpmem_module.super;
 }

opal/mca/smsc/xpmem/smsc_xpmem_internal.h

@@ -1,6 +1,8 @@
 /* -*- Mode: C; c-basic-offset:4 ; indent-tabs-mode:nil -*- */
 /*
  * Copyright (c) 2021      Google, Inc. All rights reserved.
+ * Copyright (c) 2022      Computer Architecture and VLSI Systems (CARV)
+ *                         Laboratory, ICS Forth. All rights reserved.
  * $COPYRIGHT$
  *
  * Additional copyrights may follow
@@ -42,6 +44,8 @@ struct mca_smsc_xpmem_endpoint_t {
     xpmem_apid_t apid;
     /** maximum address we can attach to on this peer */
     uintptr_t address_max;
+    /** cache of xpmem attachments created using this endpoint */
+    mca_rcache_base_vma_module_t *vma_module;
 };
 
 typedef struct mca_smsc_xpmem_endpoint_t mca_smsc_xpmem_endpoint_t;
@@ -67,10 +71,6 @@ typedef struct mca_smsc_xpmem_component_t mca_smsc_xpmem_component_t;
 
 struct mca_smsc_xpmem_module_t {
     mca_smsc_module_t super;
-
-    /** cache of xpmem attachments. this cache holds attachments for all peers. the registrations
-     * are differentiated by the alloc_base which is set to the endpoint. */
-    mca_rcache_base_vma_module_t *vma_module;
 };
 
 typedef struct mca_smsc_xpmem_module_t mca_smsc_xpmem_module_t;