On Wed, 27 Jul 2011, Frank Rowand wrote:

On 07/27/11 14:37, Thomas Gleixner wrote:

quoted

Dear RT Folks,

I'm pleased to announce the 3.0-rt4 release.

ARM panda board, PREEMPT_RT_FULL

-rt3 compiled OK.  -rt4 compile fails:


mm/init-mm.c:24: error: unknown field 'lock' specified in initializer
mm/init-mm.c:24: error: unknown field 'wait_lock' specified in initializer
mm/init-mm.c:24: error: incompatible types in initialization
mm/init-mm.c:24: error: unknown field 'save_state' specified in initializer
mm/init-mm.c:24: warning: excess elements in struct initializer
mm/init-mm.c:24: warning: (near initialization for 'init_mm.context.id_lock.raw_lock')

Bah, that's what I get for trying to vanish. Fix below.

--- linux-2.6.orig/arch/arm/include/asm/mmu.h
+++ linux-2.6/arch/arm/include/asm/mmu.h

@@ -16,7 +16,7 @@ typedef struct {
 
 /* init_mm.context.id_lock should be initialized. */
 #define INIT_MM_CONTEXT(name)                                                 \
-	.context.id_lock    = __SPIN_LOCK_UNLOCKED(name.context.id_lock),
+	.context.id_lock    = __RAW_SPIN_LOCK_UNLOCKED(name.context.id_lock),
 #else
 #define ASID(mm)	(0)
 #endif