Merge ../torvalds-2.6/

18 files changed, 88 insertions, 47 deletions

diff --git a/arch/ppc/kernel/Makefile b/arch/ppc/kernel/Makefile
index b1457a8a9c0..1fb92f16acd 100644
--- a/arch/ppc/kernel/Makefile
+++ b/arch/ppc/kernel/Makefile
@@ -15,8 +15,9 @@ extra-y				+= vmlinux.lds
 obj-y				:= entry.o traps.o irq.o idle.o time.o misc.o \
 					process.o signal.o ptrace.o align.o \
 					semaphore.o syscalls.o setup.o \
-					cputable.o ppc_htab.o perfmon.o
+					cputable.o ppc_htab.o
 obj-$(CONFIG_6xx)		+= l2cr.o cpu_setup_6xx.o
+obj-$(CONFIG_E500)		+= perfmon.o
 obj-$(CONFIG_SOFTWARE_SUSPEND)	+= swsusp.o
 obj-$(CONFIG_POWER4)		+= cpu_setup_power4.o
 obj-$(CONFIG_MODULES)		+= module.o ppc_ksyms.o
diff --git a/arch/ppc/kernel/cpu_setup_6xx.S b/arch/ppc/kernel/cpu_setup_6xx.S
index bd037caa405..ba396438ede 100644
--- a/arch/ppc/kernel/cpu_setup_6xx.S
+++ b/arch/ppc/kernel/cpu_setup_6xx.S
@@ -12,10 +12,9 @@
 #include <linux/config.h>
 #include <asm/processor.h>
 #include <asm/page.h>
-#include <asm/ppc_asm.h>
 #include <asm/cputable.h>
 #include <asm/ppc_asm.h>
-#include <asm/offsets.h>
+#include <asm/asm-offsets.h>
 #include <asm/cache.h>
 
 _GLOBAL(__setup_cpu_601)
diff --git a/arch/ppc/kernel/cpu_setup_power4.S b/arch/ppc/kernel/cpu_setup_power4.S
index f2ea1a990f1..7e4fbb65372 100644
--- a/arch/ppc/kernel/cpu_setup_power4.S
+++ b/arch/ppc/kernel/cpu_setup_power4.S
@@ -14,8 +14,7 @@
 #include <asm/page.h>
 #include <asm/ppc_asm.h>
 #include <asm/cputable.h>
-#include <asm/ppc_asm.h>
-#include <asm/offsets.h>
+#include <asm/asm-offsets.h>
 #include <asm/cache.h>
 
 _GLOBAL(__970_cpu_preinit)
diff --git a/arch/ppc/kernel/dma-mapping.c b/arch/ppc/kernel/dma-mapping.c
index e0c631cf96b..b566d982806 100644
--- a/arch/ppc/kernel/dma-mapping.c
+++ b/arch/ppc/kernel/dma-mapping.c
@@ -393,7 +393,7 @@ EXPORT_SYMBOL(__dma_sync);
  * __dma_sync_page() implementation for systems using highmem.
  * In this case, each page of a buffer must be kmapped/kunmapped
  * in order to have a virtual address for __dma_sync(). This must
- * not sleep so kmap_atmomic()/kunmap_atomic() are used.
+ * not sleep so kmap_atomic()/kunmap_atomic() are used.
  *
  * Note: yes, it is possible and correct to have a buffer extend
  * beyond the first page.
diff --git a/arch/ppc/kernel/entry.S b/arch/ppc/kernel/entry.S
index cb83045e2ed..03d4886869f 100644
--- a/arch/ppc/kernel/entry.S
+++ b/arch/ppc/kernel/entry.S
@@ -29,7 +29,7 @@
 #include <asm/cputable.h>
 #include <asm/thread_info.h>
 #include <asm/ppc_asm.h>
-#include <asm/offsets.h>
+#include <asm/asm-offsets.h>
 #include <asm/unistd.h>
 
 #undef SHOW_SYSCALLS
diff --git a/arch/ppc/kernel/fpu.S b/arch/ppc/kernel/fpu.S
index 6189b26f640..665d7d34304 100644
--- a/arch/ppc/kernel/fpu.S
+++ b/arch/ppc/kernel/fpu.S
@@ -18,7 +18,7 @@
 #include <asm/cache.h>
 #include <asm/thread_info.h>
 #include <asm/ppc_asm.h>
-#include <asm/offsets.h>
+#include <asm/asm-offsets.h>
 
 /*
  * This task wants to use the FPU now.
diff --git a/arch/ppc/kernel/head.S b/arch/ppc/kernel/head.S
index a931d773715..1960fb8c259 100644
--- a/arch/ppc/kernel/head.S
+++ b/arch/ppc/kernel/head.S
@@ -31,7 +31,7 @@
 #include <asm/cache.h>
 #include <asm/thread_info.h>
 #include <asm/ppc_asm.h>
-#include <asm/offsets.h>
+#include <asm/asm-offsets.h>
 
 #ifdef CONFIG_APUS
 #include <asm/amigappc.h>
@@ -1023,23 +1023,21 @@ __secondary_start_gemini:
         andc    r4,r4,r3
         mtspr   SPRN_HID0,r4
         sync
-        bl      gemini_prom_init
         b       __secondary_start
 #endif /* CONFIG_GEMINI */
-	.globl	__secondary_start_psurge
-__secondary_start_psurge:
-	li	r24,1			/* cpu # */
-	b	__secondary_start_psurge99
-	.globl	__secondary_start_psurge2
-__secondary_start_psurge2:
-	li	r24,2			/* cpu # */
-	b	__secondary_start_psurge99
-	.globl	__secondary_start_psurge3
-__secondary_start_psurge3:
-	li	r24,3			/* cpu # */
-	b	__secondary_start_psurge99
-__secondary_start_psurge99:
-	/* we come in here with IR=0 and DR=1, and DBAT 0
+
+	.globl	__secondary_start_pmac_0
+__secondary_start_pmac_0:
+	/* NB the entries for cpus 0, 1, 2 must each occupy 8 bytes. */
+	li	r24,0
+	b	1f
+	li	r24,1
+	b	1f
+	li	r24,2
+	b	1f
+	li	r24,3
+1:
+	/* on powersurge, we come in here with IR=0 and DR=1, and DBAT 0
 	   set to map the 0xf0000000 - 0xffffffff region */
 	mfmsr	r0
 	rlwinm	r0,r0,0,28,26		/* clear DR (0x10) */
diff --git a/arch/ppc/kernel/head_44x.S b/arch/ppc/kernel/head_44x.S
index 9e68e32edb6..599245b0407 100644
--- a/arch/ppc/kernel/head_44x.S
+++ b/arch/ppc/kernel/head_44x.S
@@ -40,7 +40,7 @@
 #include <asm/cputable.h>
 #include <asm/thread_info.h>
 #include <asm/ppc_asm.h>
-#include <asm/offsets.h>
+#include <asm/asm-offsets.h>
 #include "head_booke.h"
 
 
diff --git a/arch/ppc/kernel/head_4xx.S b/arch/ppc/kernel/head_4xx.S
index ca9518b96c6..8562b807b37 100644
--- a/arch/ppc/kernel/head_4xx.S
+++ b/arch/ppc/kernel/head_4xx.S
@@ -40,7 +40,7 @@
 #include <asm/cputable.h>
 #include <asm/thread_info.h>
 #include <asm/ppc_asm.h>
-#include <asm/offsets.h>
+#include <asm/asm-offsets.h>
 
 /* As with the other PowerPC ports, it is expected that when code
  * execution begins here, the following registers contain valid, yet
diff --git a/arch/ppc/kernel/head_8xx.S b/arch/ppc/kernel/head_8xx.S
index eb18cadb375..cb1a3a54a02 100644
--- a/arch/ppc/kernel/head_8xx.S
+++ b/arch/ppc/kernel/head_8xx.S
@@ -30,7 +30,7 @@
 #include <asm/cputable.h>
 #include <asm/thread_info.h>
 #include <asm/ppc_asm.h>
-#include <asm/offsets.h>
+#include <asm/asm-offsets.h>
 
 /* Macro to make the code more readable. */
 #ifdef CONFIG_8xx_CPU6
diff --git a/arch/ppc/kernel/head_fsl_booke.S b/arch/ppc/kernel/head_fsl_booke.S
index 4028f4c7d97..8e52e840831 100644
--- a/arch/ppc/kernel/head_fsl_booke.S
+++ b/arch/ppc/kernel/head_fsl_booke.S
@@ -41,7 +41,7 @@
 #include <asm/cputable.h>
 #include <asm/thread_info.h>
 #include <asm/ppc_asm.h>
-#include <asm/offsets.h>
+#include <asm/asm-offsets.h>
 #include "head_booke.h"
 
 /* As with the other PowerPC ports, it is expected that when code
diff --git a/arch/ppc/kernel/idle.c b/arch/ppc/kernel/idle.c
index 53547b6de45..fba29c876b6 100644
--- a/arch/ppc/kernel/idle.c
+++ b/arch/ppc/kernel/idle.c
@@ -22,6 +22,7 @@
 #include <linux/ptrace.h>
 #include <linux/slab.h>
 #include <linux/sysctl.h>
+#include <linux/cpu.h>
 
 #include <asm/pgtable.h>
 #include <asm/uaccess.h>
@@ -35,6 +36,7 @@
 void default_idle(void)
 {
 	void (*powersave)(void);
+	int cpu = smp_processor_id();
 
 	powersave = ppc_md.power_save;
 
@@ -44,7 +46,7 @@ void default_idle(void)
 #ifdef CONFIG_SMP
 		else {
 			set_thread_flag(TIF_POLLING_NRFLAG);
-			while (!need_resched())
+			while (!need_resched() && !cpu_is_offline(cpu))
 				barrier();
 			clear_thread_flag(TIF_POLLING_NRFLAG);
 		}
@@ -52,6 +54,8 @@ void default_idle(void)
 	}
 	if (need_resched())
 		schedule();
+	if (cpu_is_offline(cpu) && system_state == SYSTEM_RUNNING)
+		cpu_die();
 }
 
 /*
diff --git a/arch/ppc/kernel/idle_6xx.S b/arch/ppc/kernel/idle_6xx.S
index 25d009c75f7..1a2194cf682 100644
--- a/arch/ppc/kernel/idle_6xx.S
+++ b/arch/ppc/kernel/idle_6xx.S
@@ -20,7 +20,7 @@
 #include <asm/cputable.h>
 #include <asm/thread_info.h>
 #include <asm/ppc_asm.h>
-#include <asm/offsets.h>
+#include <asm/asm-offsets.h>
 
 #undef DEBUG
 
diff --git a/arch/ppc/kernel/idle_power4.S b/arch/ppc/kernel/idle_power4.S
index 73a58ff0390..cc0d535365c 100644
--- a/arch/ppc/kernel/idle_power4.S
+++ b/arch/ppc/kernel/idle_power4.S
@@ -20,7 +20,7 @@
 #include <asm/cputable.h>
 #include <asm/thread_info.h>
 #include <asm/ppc_asm.h>
-#include <asm/offsets.h>
+#include <asm/asm-offsets.h>
 
 #undef DEBUG
 
diff --git a/arch/ppc/kernel/misc.S b/arch/ppc/kernel/misc.S
index ce71b4a0158..90d917d2e85 100644
--- a/arch/ppc/kernel/misc.S
+++ b/arch/ppc/kernel/misc.S
@@ -23,7 +23,7 @@
 #include <asm/mmu.h>
 #include <asm/ppc_asm.h>
 #include <asm/thread_info.h>
-#include <asm/offsets.h>
+#include <asm/asm-offsets.h>
 
 	.text
 
diff --git a/arch/ppc/kernel/smp.c b/arch/ppc/kernel/smp.c
index e70b587b9e5..726fe7ce174 100644
--- a/arch/ppc/kernel/smp.c
+++ b/arch/ppc/kernel/smp.c
@@ -45,6 +45,7 @@ cpumask_t cpu_online_map;
 cpumask_t cpu_possible_map;
 int smp_hw_index[NR_CPUS];
 struct thread_info *secondary_ti;
+static struct task_struct *idle_tasks[NR_CPUS];
 
 EXPORT_SYMBOL(cpu_online_map);
 EXPORT_SYMBOL(cpu_possible_map);
@@ -286,7 +287,8 @@ static void __devinit smp_store_cpu_info(int id)
 
 void __init smp_prepare_cpus(unsigned int max_cpus)
 {
-	int num_cpus, i;
+	int num_cpus, i, cpu;
+	struct task_struct *p;
 
 	/* Fixup boot cpu */
         smp_store_cpu_info(smp_processor_id());
@@ -308,6 +310,17 @@ void __init smp_prepare_cpus(unsigned int max_cpus)
 
 	if (smp_ops->space_timers)
 		smp_ops->space_timers(num_cpus);
+
+	for_each_cpu(cpu) {
+		if (cpu == smp_processor_id())
+			continue;
+		/* create a process for the processor */
+		p = fork_idle(cpu);
+		if (IS_ERR(p))
+			panic("failed fork for CPU %u: %li", cpu, PTR_ERR(p));
+		p->thread_info->cpu = cpu;
+		idle_tasks[cpu] = p;
+	}
 }
 
 void __devinit smp_prepare_boot_cpu(void)
@@ -334,12 +347,17 @@ int __devinit start_secondary(void *unused)
 	set_dec(tb_ticks_per_jiffy);
 	cpu_callin_map[cpu] = 1;
 
-	printk("CPU %i done callin...\n", cpu);
+	printk("CPU %d done callin...\n", cpu);
 	smp_ops->setup_cpu(cpu);
-	printk("CPU %i done setup...\n", cpu);
-	local_irq_enable();
+	printk("CPU %d done setup...\n", cpu);
 	smp_ops->take_timebase();
-	printk("CPU %i done timebase take...\n", cpu);
+	printk("CPU %d done timebase take...\n", cpu);
+
+	spin_lock(&call_lock);
+	cpu_set(cpu, cpu_online_map);
+	spin_unlock(&call_lock);
+
+	local_irq_enable();
 
 	cpu_idle();
 	return 0;
@@ -347,17 +365,11 @@ int __devinit start_secondary(void *unused)
 
 int __cpu_up(unsigned int cpu)
 {
-	struct task_struct *p;
 	char buf[32];
 	int c;
 
-	/* create a process for the processor */
-	/* only regs.msr is actually used, and 0 is OK for it */
-	p = fork_idle(cpu);
-	if (IS_ERR(p))
-		panic("failed fork for CPU %u: %li", cpu, PTR_ERR(p));
-	secondary_ti = p->thread_info;
-	p->thread_info->cpu = cpu;
+	secondary_ti = idle_tasks[cpu]->thread_info;
+	mb();
 
 	/*
 	 * There was a cache flush loop here to flush the cache
@@ -389,7 +401,11 @@ int __cpu_up(unsigned int cpu)
 	printk("Processor %d found.\n", cpu);
 
 	smp_ops->give_timebase();
-	cpu_set(cpu, cpu_online_map);
+
+	/* Wait until cpu puts itself in the online map */
+	while (!cpu_online(cpu))
+		cpu_relax();
+
 	return 0;
 }
 
diff --git a/arch/ppc/kernel/swsusp.S b/arch/ppc/kernel/swsusp.S
index 55148bb88d3..69773cc1a85 100644
--- a/arch/ppc/kernel/swsusp.S
+++ b/arch/ppc/kernel/swsusp.S
@@ -5,7 +5,7 @@
 #include <asm/cputable.h>
 #include <asm/thread_info.h>
 #include <asm/ppc_asm.h>
-#include <asm/offsets.h>
+#include <asm/asm-offsets.h>
 
 
 /*
diff --git a/arch/ppc/kernel/traps.c b/arch/ppc/kernel/traps.c
index d87423d1003..961ede87be7 100644
--- a/arch/ppc/kernel/traps.c
+++ b/arch/ppc/kernel/traps.c
@@ -118,6 +118,28 @@ void _exception(int signr, struct pt_regs *regs, int code, unsigned long addr)
 	info.si_code = code;
 	info.si_addr = (void __user *) addr;
 	force_sig_info(signr, &info, current);
+
+	/*
+	 * Init gets no signals that it doesn't have a handler for.
+	 * That's all very well, but if it has caused a synchronous
+	 * exception and we ignore the resulting signal, it will just
+	 * generate the same exception over and over again and we get
+	 * nowhere.  Better to kill it and let the kernel panic.
+	 */
+	if (current->pid == 1) {
+		__sighandler_t handler;
+
+		spin_lock_irq(&current->sighand->siglock);
+		handler = current->sighand->action[signr-1].sa.sa_handler;
+		spin_unlock_irq(&current->sighand->siglock);
+		if (handler == SIG_DFL) {
+			/* init has generated a synchronous exception
+			   and it doesn't have a handler for the signal */
+			printk(KERN_CRIT "init has generated signal %d "
+			       "but has no handler for it\n", signr);
+			do_exit(signr);
+		}
+	}
 }
 
 /*
@@ -849,10 +871,12 @@ void AltivecAssistException(struct pt_regs *regs)
 }
 #endif /* CONFIG_ALTIVEC */
 
+#ifdef CONFIG_E500
 void PerformanceMonitorException(struct pt_regs *regs)
 {
 	perf_irq(regs);
 }
+#endif
 
 #ifdef CONFIG_FSL_BOOKE
 void CacheLockingException(struct pt_regs *regs, unsigned long address,