Changeset 41deb2a in mainline

Timestamp:

2011-12-30T19:27:15Z (13 years ago)

Author:

Jakub Jermar <jakub@…>

Branches:

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

Children:

efb48eb

Parents:

0fd9b35

Message:

Allocate ra_segment_t from a dedicated slab cache.

Location:

kernel/generic

Files:

• include/lib/ra.h (modified) (1 diff)
• src/lib/ra.c (modified) (4 diffs)
• src/main/main.c (modified) (2 diffs)

kernel/generic/include/lib/ra.h

@@ -77 +77 @@
 } ra_segment_t;
 
+extern void ra_init(void);
 extern ra_arena_t *ra_arena_create(void);
 extern bool ra_span_add(ra_arena_t *, uintptr_t, size_t);

kernel/generic/src/lib/ra.c

@@ -55 +55 @@
 #include <synch/spinlock.h>
 
+static slab_cache_t *ra_segment_cache;
+
 #define USED_BUCKETS    1024
 
@@ -90 +92 @@
         ra_segment_t *seg;
 
-        seg = (ra_segment_t *) malloc(sizeof(ra_segment_t), FRAME_ATOMIC);
+        seg = slab_alloc(ra_segment_cache, FRAME_ATOMIC);
         if (!seg)
                 return NULL;
@@ -105 +107 @@
 static void ra_segment_destroy(ra_segment_t *seg)
 {
-        free(seg);
+        slab_free(ra_segment_cache, seg);
 }
 
@@ -420 +422 @@
 }
 
+void ra_init(void)
+{
+        ra_segment_cache = slab_cache_create("segment_cache",
+            sizeof(ra_segment_t), 0, NULL, NULL, SLAB_CACHE_MAGDEFERRED);
+}
 
 /** @}

kernel/generic/src/main/main.c

@@ -87 +87 @@
 #include <sysinfo/sysinfo.h>
 #include <sysinfo/stats.h>
+#include <lib/ra.h>
 
 /** Global configuration structure. */
@@ -212 +213 @@
         km_identity_init();
         frame_init();
-        /* Initialize at least 1 memory segment big enough for slab to work. */
         slab_cache_init();
+        ra_init();      
         sysinfo_init();
         btree_init();