Changeset f76fed4 in mainline for generic/include

Timestamp:

2006-03-03T00:20:31Z (20 years ago)

Author:

Ondrej Palkovsky <ondrap@…>

Branches:

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

Children:

09c18f78

Parents:

ddcf365

Message:

Added lazy fpu context allocation.

• threads that don't use fpu, don't get allocated fpu context
• fpu context alignment on AMD64 nicely disappeared

Location:

generic/include

Files:

• fpu_context.h (modified) (1 diff)
• proc/thread.h (modified) (3 diffs)

generic/include/fpu_context.h

@@ -34 +34 @@
 #include <typedefs.h>
 
+#if defined(CONFIG_FPU_LAZY) && !defined(ARCH_HAS_FPU)
+# error "CONFIG_FPU_LAZY defined, but no ARCH_HAS_FPU"
+#endif
+
 extern void fpu_context_save(fpu_context_t *);
 extern void fpu_context_restore(fpu_context_t *);
-extern void fpu_init(fpu_context_t *);
+extern void fpu_init(void);
 extern void fpu_enable(void);
 extern void fpu_disable(void);

generic/include/proc/thread.h

@@ -40 +40 @@
 #include <config.h>
 #include <adt/list.h>
+#include <mm/slab.h>
 
 #define THREAD_STACK_SIZE       STACK_SIZE
@@ -83 +84 @@
         volatile int timeout_pending;           /**< Flag signalling sleep timeout in progress. */
 
-        fpu_context_t saved_fpu_context;
+        fpu_context_t *saved_fpu_context;
         int fpu_context_exists;
 
@@ -136 +137 @@
 extern void thread_destroy(thread_t *t);
 
+
+/* Fpu context slab cache */
+extern slab_cache_t *fpu_context_slab;
+
 #endif