Changeset 635 for trunk/kernel/fs/devfs.c

Timestamp:

Jun 26, 2019, 11:42:37 AM (5 years ago)

Author:

alain

Message:

This version is a major evolution: The physical memory allocators,
defined in the kmem.c, ppm.c, and kcm.c files have been modified
to support remote accesses. The RPCs that were previously user
to allocate physical memory in a remote cluster have been removed.
This has been done to cure a dead-lock in case of concurrent page-faults.

This version 2.2 has been tested on a (4 clusters / 2 cores per cluster)
TSAR architecture, for both the "sort" and the "fft" applications.

File:

• trunk/kernel/fs/devfs.c (modified) (2 diffs)

trunk/kernel/fs/devfs.c

@@ -58 +58 @@
     kmem_req_t    req;
 
-        req.type    = KMEM_DEVFS_CTX;
-        req.size    = sizeof(devfs_ctx_t);
+        req.type    = KMEM_KCM;
+        req.order   = bits_log2( sizeof(devfs_ctx_t) );
     req.flags   = AF_KERNEL | AF_ZERO;
 
-        return (devfs_ctx_t *)kmem_alloc( &req );
+        return kmem_alloc( &req );
 }
 
@@ -81 +81 @@
     kmem_req_t    req;
 
-    req.type = KMEM_DEVFS_CTX;
+    req.type = KMEM_KCM;
     req.ptr  = devfs_ctx;
     kmem_free( &req );