Changeset b0c2075 in mainline for kernel/test/mm/falloc1.c

Timestamp:

2013-09-10T17:48:57Z (11 years ago)

Author:

Martin Decky <martin@…>

Branches:

lfn, master, serial, ticket/834-toolchain-update, topic/msim-upgrade, topic/simplify-dev-export

Children:

85147f3

Parents:

86733f3

Message:

new physical memory allocator supporting physical address constrains
the buddy allocator framework is retired and replaced by a two-level bitmap
the allocator can allocate an arbitrary number of frames, not only a power-of-two count

Caution: Change of semantics
The physical memory allocator no longer allocates naturally aligned blocks. If you require an aligned block, specify it as the constraint.

File:

• kernel/test/mm/falloc1.c (modified) (3 diffs)

kernel/test/mm/falloc1.c

@@ -37 +37 @@
 #include <align.h>
 
-#define MAX_FRAMES  1024U
+#define MAX_FRAMES  1024
 #define MAX_ORDER   8
 #define TEST_RUNS   2
@@ -51 +51 @@
                 return "Unable to allocate frames";
         
-        unsigned int results[MAX_ORDER + 1];
+        unsigned int results[MAX_FRAMES + 1];
+        
         for (unsigned int run = 0; run < TEST_RUNS; run++) {
-                for (unsigned int order = 0; order <= MAX_ORDER; order++) {
-                        TPRINTF("Allocating %u frames blocks ... ", 1 << order);
+                for (size_t count = 1; count <= MAX_FRAMES; count++) {
+                        size_t bytes = FRAMES2SIZE(count);
+                        
+                        TPRINTF("Allocating %zu frames blocks (%zu bytes) ... ",
+                            count, bytes);
                         
                         unsigned int allocated = 0;
-                        for (unsigned int i = 0; i < (MAX_FRAMES >> order); i++) {
+                        for (unsigned int i = 0; i < (MAX_FRAMES / count); i++) {
                                 frames[allocated] =
-                                    PA2KA(frame_alloc(order, FRAME_ATOMIC, 0));
-                                
-                                if (ALIGN_UP(frames[allocated], FRAME_SIZE << order) !=
-                                    frames[allocated]) {
-                                        TPRINTF("Block at address %p (size %u) is not aligned\n",
-                                            (void *) frames[allocated], (FRAME_SIZE << order) >> 10);
-                                        return "Test failed";
-                                }
+                                    PA2KA(frame_alloc(count, FRAME_ATOMIC, 0));
                                 
                                 if (frames[allocated])
@@ -78 +75 @@
                         TPRINTF("%d blocks allocated.\n", allocated);
                         
-                        if (run) {
-                                if (results[order] != allocated)
+                        if (run > 0) {
+                                if (results[count] != allocated)
                                         return "Possible frame leak";
                         } else
-                                results[order] = allocated;
+                                results[count] = allocated;
                         
                         TPRINTF("Deallocating ... ");