Merge.

arch/sparc/kernel/entry.S

@@ -350,21 +350,15 @@ smp4m_ticker:
 	 * for cross calls.  That has a separate entry point below.
 	 */
 maybe_smp4m_msg:
-	GET_PROCESSOR_MID(o3)
+	GET_PROCESSOR4M_ID(o3)
 	set	sun4m_interrupts, %l5
 	ld	[%l5], %o5
-	sethi	%hi(0x60000000), %o4
+	sethi	%hi(0x40000000), %o2
 	sll	%o3, 12, %o3
 	ld	[%o5 + %o3], %o1
-	andcc	%o1, %o4, %g0
+	andcc	%o1, %o2, %g0
 	be,a	smp4m_ticker
 	 cmp	%l7, 14
-	sethi	%hi(0x40000000), %o2
-	add	%o5, %o3, %o5
-	andcc	%o1, %o2, %g0
-	be,a	1f
-	 sethi	%hi(0x20000000), %o2
-1:
 	st	%o2, [%o5 + 0x4]
 	WRITE_PAUSE
 	ld	[%o5], %g0
@@ -374,15 +368,9 @@ maybe_smp4m_msg:
 	WRITE_PAUSE
 	wr	%l4, PSR_ET, %psr
 	WRITE_PAUSE
-	srl	%o2, (16+14), %o2
-	tst	%o2
-	bne	2f
-	 nop
 	call	smp_reschedule_irq
-	 add	%o7, 8, %o7
-2:
-	call	smp_stop_cpu_irq
 	 nop
+
 	RESTORE_ALL
 
 	.align	4
@@ -390,7 +378,7 @@ maybe_smp4m_msg:
 linux_trap_ipi15_sun4m:
 	SAVE_ALL
 	sethi	%hi(0x80000000), %o2
-	GET_PROCESSOR_MID(o0)
+	GET_PROCESSOR4M_ID(o0)
 	set	sun4m_interrupts, %l5
 	ld	[%l5], %o5
 	sll	%o0, 12, %o0

arch/sparc/kernel/head.S

@@ -746,9 +746,6 @@ go_to_highmem:
 		jmpl	%g1, %g0
 		 nop
 
-	/* This is to align init_thread_union properly, be careful. -DaveM */
-	.align	8192
-
 /* The code above should be at beginning and we have to take care about
  * short jumps, as branching to .text.init section from .text is usually
  * impossible */

arch/sparc/kernel/init_task.c

@@ -21,5 +21,7 @@ EXPORT_SYMBOL(init_task);
  * If this is not aligned on a 8k boundry, then you should change code
  * in etrap.S which assumes it.
  */
-__asm__(".section \".text\",#alloc\n");
-union thread_union init_thread_union = { INIT_THREAD_INFO(init_task) };
+union thread_union init_thread_union
+	__attribute__((section (".text")))
+	__attribute__((aligned (THREAD_SIZE)))
+	= { INIT_THREAD_INFO(init_task) };

arch/sparc/kernel/sparc_ksyms.c

@@ -183,7 +183,7 @@ EXPORT_SYMBOL(io_remap_page_range);
 #ifndef CONFIG_SMP
 EXPORT_SYMBOL(BTFIXUP_CALL(___xchg32));
 #else
-EXPORT_SYMBOL(BTFIXUP_CALL(__smp_processor_id));
+EXPORT_SYMBOL(BTFIXUP_CALL(__hard_smp_processor_id));
 #endif
 EXPORT_SYMBOL(BTFIXUP_CALL(enable_irq));
 EXPORT_SYMBOL(BTFIXUP_CALL(disable_irq));

arch/sparc/lib/Makefile

@@ -7,5 +7,7 @@ EXTRA_AFLAGS := -ansi -DST_DIV0=0x02
 lib-y := mul.o rem.o sdiv.o udiv.o umul.o urem.o ashrdi3.o memcpy.o memset.o \
          strlen.o checksum.o blockops.o memscan.o memcmp.o strncmp.o \
 	 strncpy_from_user.o divdi3.o udivdi3.o strlen_user.o \
-	 copy_user.o locks.o atomic.o atomic32.o bitops.o debuglocks.o \
+	 copy_user.o locks.o atomic.o atomic32.o bitops.o \
 	 lshrdi3.o ashldi3.o rwsem.o muldi3.o bitext.o
+
+lib-$(CONFIG_DEBUG_SPINLOCK) +=	debuglocks.o

arch/sparc/lib/debuglocks.c

@@ -12,8 +12,7 @@
 #include <asm/psr.h>
 #include <asm/system.h>
 
-/* To enable this code, just define SPIN_LOCK_DEBUG in asm/spinlock.h */
-#ifdef SPIN_LOCK_DEBUG
+#ifdef CONFIG_SMP
 
 /* Some notes on how these debugging routines work.  When a lock is acquired
  * an extra debugging member lock->owner_pc is set to the caller of the lock
@@ -200,4 +199,4 @@ void _do_write_unlock(rwlock_t *rw)
 	rw->lock = 0;
 }
 
-#endif /* SPIN_LOCK_DEBUG */
+#endif /* SMP */

include/asm-sparc/asmmacro.h

@@ -18,17 +18,6 @@
 #define GET_PROCESSOR4D_ID(reg) \
 	lda	[%g0] ASI_M_VIKING_TMP1, %reg;
 
-/* Blackbox */
-#define GET_PROCESSOR_ID(reg) \
-	sethi	%hi(___b_smp_processor_id), %reg; \
-	sethi	%hi(boot_cpu_id), %reg; \
-	ldub	[%reg + %lo(boot_cpu_id)], %reg;
-
-#define GET_PROCESSOR_MID(reg) \
-	rd	%tbr, %reg; \
-	srl	%reg, 12, %reg; \
-	and	%reg, 3, %reg;
-
 /* All trap entry points _must_ begin with this macro or else you
  * lose.  It makes sure the kernel has a proper window so that
  * c-code can be called.

include/asm-sparc/smp.h

@@ -53,8 +53,8 @@ void smp_info(struct seq_file *);
 
 BTFIXUPDEF_CALL(void, smp_cross_call, smpfunc_t, unsigned long, unsigned long, unsigned long, unsigned long, unsigned long)
 BTFIXUPDEF_CALL(void, smp_message_pass, int, int, unsigned long, int)
-BTFIXUPDEF_CALL(int, __smp_processor_id, void)
-BTFIXUPDEF_BLACKBOX(smp_processor_id)
+BTFIXUPDEF_CALL(int, __hard_smp_processor_id, void)
+BTFIXUPDEF_BLACKBOX(hard_smp_processor_id)
 BTFIXUPDEF_BLACKBOX(load_current)
 
 #define smp_cross_call(func,arg1,arg2,arg3,arg4,arg5) BTFIXUP_CALL(smp_cross_call)(func,arg1,arg2,arg3,arg4,arg5)
@@ -129,7 +129,7 @@ extern __inline__ int hard_smp_processor_id(void)
 	   			     "=&r" (cpuid));
 	   See btfixup.h and btfixupprep.c to understand how a blackbox works.
 	 */
-	__asm__ __volatile__("sethi %%hi(___b_smp_processor_id), %0\n\t"
+	__asm__ __volatile__("sethi %%hi(___b_hard_smp_processor_id), %0\n\t"
 			     "sethi %%hi(boot_cpu_id), %0\n\t"
 			     "ldub [%0 + %%lo(boot_cpu_id)], %0\n\t" :
 			     "=&r" (cpuid));
@@ -141,7 +141,7 @@ extern __inline__ int hard_smp_processor_id(void)
 	int cpuid;
 	
 	__asm__ __volatile__("mov %%o7, %%g1\n\t"
-			     "call ___f___smp_processor_id\n\t"
+			     "call ___f___hard_smp_processor_id\n\t"
 			     " nop\n\t"
 			     "mov %%g2, %0\n\t" : "=r"(cpuid) : : "g1", "g2");
 	return cpuid;