linux-kernel - Re: [ANNOUNCE] 3.0-rt4

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Message-ID: <alpine.LFD.2.02.1107280004410.2660@ionos>
Date:	Thu, 28 Jul 2011 00:05:45 +0200 (CEST)
From:	Thomas Gleixner <tglx@...utronix.de>
To:	Frank Rowand <frank.rowand@...sony.com>
cc:	LKML <linux-kernel@...r.kernel.org>,
	linux-rt-users <linux-rt-users@...r.kernel.org>,
	Peter Zijlstra <peterz@...radead.org>,
	"Paul E. McKenney" <paulmck@...ux.vnet.ibm.com>,
	Steven Rostedt <rostedt@...dmis.org>,
	Jason Wessel <jason.wessel@...driver.com>
Subject: Re: [ANNOUNCE] 3.0-rt4

On Wed, 27 Jul 2011, Frank Rowand wrote:

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


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