Merge bk://lia64.bkbits.net/to-linus-2.5/

into home.transmeta.com:/home/torvalds/v2.5/linux

arch/ia64/config.in

-mainmenu_name "Kernel configuration of Linux for IA-64 machines"
+mainmenu_name "IA-64 Linux Kernel Configuration"
 
 source init/Config.in
 
 mainmenu_option next_comment
-comment 'General setup'
+comment 'Processor type and features'
 
 define_bool CONFIG_IA64 y
 
@@ -14,13 +14,6 @@ define_bool CONFIG_SBUS n
 define_bool CONFIG_RWSEM_GENERIC_SPINLOCK y
 define_bool CONFIG_RWSEM_XCHGADD_ALGORITHM n
 
-if [ "$CONFIG_IA64_HP_SIM" = "n" ]; then
-  define_bool CONFIG_ACPI y
-  define_bool CONFIG_ACPI_EFI y
-  define_bool CONFIG_ACPI_INTERPRETER y
-  define_bool CONFIG_ACPI_KERNEL_CONFIG y
-fi
-
 choice 'IA-64 processor type' \
 	"Itanium			CONFIG_ITANIUM \
 	 McKinley			CONFIG_MCKINLEY" Itanium
@@ -38,6 +31,13 @@ choice 'Kernel page size'						\
 	 16KB			CONFIG_IA64_PAGE_SIZE_16KB		\
 	 64KB			CONFIG_IA64_PAGE_SIZE_64KB" 16KB
 
+if [ "$CONFIG_IA64_HP_SIM" = "n" ]; then
+  define_bool CONFIG_ACPI y
+  define_bool CONFIG_ACPI_EFI y
+  define_bool CONFIG_ACPI_INTERPRETER y
+  define_bool CONFIG_ACPI_KERNEL_CONFIG y
+fi
+
 if [ "$CONFIG_ITANIUM" = "y" ]; then
 	define_bool CONFIG_IA64_BRL_EMU y
 	bool '  Enable Itanium B-step specific code' CONFIG_ITANIUM_BSTEP_SPECIFIC
@@ -136,6 +136,17 @@ else
 fi
 endmenu
 
+else # ! HP_SIM
+mainmenu_option next_comment
+comment 'Block devices'
+tristate 'Loopback device support' CONFIG_BLK_DEV_LOOP
+dep_tristate 'Network block device support' CONFIG_BLK_DEV_NBD $CONFIG_NET
+
+tristate 'RAM disk support' CONFIG_BLK_DEV_RAM
+if [ "$CONFIG_BLK_DEV_RAM" = "y" -o "$CONFIG_BLK_DEV_RAM" = "m" ]; then
+   int '  Default RAM disk size' CONFIG_BLK_DEV_RAM_SIZE 4096
+fi
+endmenu
 fi # !HP_SIM
 
 mainmenu_option next_comment
@@ -228,15 +239,7 @@ fi
 fi # !HP_SIM
 
 if [ "$CONFIG_IA64_HP_SIM" != "n" -o "$CONFIG_IA64_GENERIC" != "n" ]; then
-  mainmenu_option next_comment
-  comment 'Simulated drivers'
-
-  bool 'Simulated Ethernet ' CONFIG_SIMETH
-  bool 'Simulated serial driver support' CONFIG_SIM_SERIAL
-  if [ "$CONFIG_SCSI" != "n" ]; then
-    bool 'Simulated SCSI disk' CONFIG_SCSI_SIM
-  fi
-  endmenu
+  source arch/ia64/hp/Config.in
 fi
 
 
@@ -258,15 +261,6 @@ if [ "$CONFIG_DEBUG_KERNEL" != "n" ]; then
    bool '  Spinlock debugging' CONFIG_DEBUG_SPINLOCK
    bool '  Turn on compare-and-exchange bug checking (slow!)' CONFIG_IA64_DEBUG_CMPXCHG
    bool '  Turn on irq debug checks (slow!)' CONFIG_IA64_DEBUG_IRQ
-   bool '  Built-in Kernel Debugger support' CONFIG_KDB
-   dep_tristate '    KDB modules' CONFIG_KDB_MODULES $CONFIG_KDB
-   if [ "$CONFIG_KDB" = "y" ]; then
-      bool '    KDB off by default' CONFIG_KDB_OFF
-      comment '  Load all symbols for debugging is required for KDB'
-      define_bool CONFIG_KALLSYMS y
-   else
-      bool '  Load all symbols for debugging' CONFIG_KALLSYMS
-   fi
 fi
 
 endmenu

arch/ia64/hp/Makefile

 #
 # ia64/platform/hp/Makefile
 #
+# Copyright (C) 2002 Hewlett-Packard Co.
+#	David Mosberger-Tang <davidm@hpl.hp.com>
 # Copyright (C) 1999 Silicon Graphics, Inc.
 # Copyright (C) Srinivasa Thirumalachar (sprasad@engr.sgi.com)
 #
@@ -12,6 +14,10 @@ O_TARGET := hp.a
 obj-y := hpsim_console.o hpsim_irq.o hpsim_setup.o
 obj-$(CONFIG_IA64_GENERIC) += hpsim_machvec.o
 
+obj-$(CONFIG_SIMETH)	+= simeth.o
+obj-$(CONFIG_SIM_SERIAL) += simserial.o
+obj-$(CONFIG_SCSI_SIM)	+= simscsi.o
+
 clean::
 
 include $(TOPDIR)/Rules.make

arch/ia64/hp/simscsi.c

+/*
+ * Simulated SCSI driver.
+ *
+ * Copyright (C) 1999, 2001-2002 Hewlett-Packard Co
+ *	David Mosberger-Tang <davidm@hpl.hp.com>
+ *	Stephane Eranian <eranian@hpl.hp.com>
+ *
+ * 02/01/15 David Mosberger	Updated for v2.5.1
+ * 99/12/18 David Mosberger	Added support for READ10/WRITE10 needed by linux v2.3.33
+ */
+#include <linux/config.h>
+#include <linux/blk.h>
+#include <linux/init.h>
+#include <linux/interrupt.h>
+#include <linux/kernel.h>
+#include <linux/timer.h>
+
+#include <scsi/scsi.h>
+
+#include <asm/irq.h>
+
+#include "../drivers/scsi/scsi.h"
+#include "../drivers/scsi/sd.h"
+#include "../drivers/scsi/hosts.h"
+#include "simscsi.h"
+
+#define DEBUG_SIMSCSI	1
+
+/* Simulator system calls: */
+
+#define SSC_OPEN			50
+#define SSC_CLOSE			51
+#define SSC_READ			52
+#define SSC_WRITE			53
+#define SSC_GET_COMPLETION		54
+#define SSC_WAIT_COMPLETION		55
+
+#define SSC_WRITE_ACCESS		2
+#define SSC_READ_ACCESS			1
+
+#if DEBUG_SIMSCSI
+  int simscsi_debug;
+# define DBG	simscsi_debug
+#else
+# define DBG	0
+#endif
+
+static struct Scsi_Host *host;
+
+static void simscsi_interrupt (unsigned long val);
+DECLARE_TASKLET(simscsi_tasklet, simscsi_interrupt, 0);
+
+struct disk_req {
+	unsigned long addr;
+	unsigned len;
+};
+
+struct disk_stat {
+	int fd;
+	unsigned count;
+};
+
+extern long ia64_ssc (long arg0, long arg1, long arg2, long arg3, int nr);
+
+static int desc[8] = { -1, -1, -1, -1, -1, -1, -1, -1 };
+
+static struct queue_entry {
+	Scsi_Cmnd *sc;
+} queue[SIMSCSI_REQ_QUEUE_LEN];
+
+static int rd, wr;
+static atomic_t num_reqs = ATOMIC_INIT(0);
+
+/* base name for default disks */
+static char *simscsi_root = DEFAULT_SIMSCSI_ROOT;
+
+#define MAX_ROOT_LEN	128
+
+/*
+ * used to setup a new base for disk images
+ * to use /foo/bar/disk[a-z] as disk images
+ * you have to specify simscsi=/foo/bar/disk on the command line
+ */
+static int __init
+simscsi_setup (char *s)
+{
+	/* XXX Fix me we may need to strcpy() ? */
+	if (strlen(s) > MAX_ROOT_LEN) {
+		printk("simscsi_setup: prefix too long---using default %s\n", simscsi_root);
+	}
+	simscsi_root = s;
+	return 1;
+}
+
+__setup("simscsi=", simscsi_setup);
+
+static void
+simscsi_interrupt (unsigned long val)
+{
+	Scsi_Cmnd *sc;
+
+	while ((sc = queue[rd].sc) != 0) {
+		atomic_dec(&num_reqs);
+		queue[rd].sc = 0;
+		if (DBG)
+			printk("simscsi_interrupt: done with %ld\n", sc->serial_number);
+		(*sc->scsi_done)(sc);
+		rd = (rd + 1) % SIMSCSI_REQ_QUEUE_LEN;
+	}
+}
+
+int
+simscsi_detect (Scsi_Host_Template *templ)
+{
+	templ->proc_name = "simscsi";
+	host = scsi_register(templ, 0);
+	return 1;	/* fake one SCSI host adapter */
+}
+
+int
+simscsi_release (struct Scsi_Host *host)
+{
+	return 0;	/* this is easy...  */
+}
+
+const char *
+simscsi_info (struct Scsi_Host *host)
+{
+	return "simulated SCSI host adapter";
+}
+
+int
+simscsi_abort (Scsi_Cmnd *cmd)
+{
+	printk ("simscsi_abort: unimplemented\n");
+	return SCSI_ABORT_SUCCESS;
+}
+
+int
+simscsi_reset (Scsi_Cmnd *cmd, unsigned int reset_flags)
+{
+	printk ("simscsi_reset: unimplemented\n");
+	return SCSI_RESET_SUCCESS;
+}
+
+int
+simscsi_biosparam (Disk *disk, kdev_t n, int ip[])
+{
+	int size = disk->capacity;
+
+	ip[0] = 64;
+	ip[1] = 32;
+	ip[2] = size >> 11;
+	return 0;
+}
+
+static void
+simscsi_readwrite (Scsi_Cmnd *sc, int mode, unsigned long offset, unsigned long len)
+{
+	struct disk_stat stat;
+	struct disk_req req;
+
+	req.addr = __pa(sc->request_buffer);
+	req.len  = len;			/* # of bytes to transfer */
+
+	if (sc->request_bufflen < req.len)
+		return;
+
+	stat.fd = desc[sc->target];
+	if (DBG)
+		printk("simscsi_%s @ %lx (off %lx)\n",
+		       mode == SSC_READ ? "read":"write", req.addr, offset);
+	ia64_ssc(stat.fd, 1, __pa(&req), offset, mode);
+	ia64_ssc(__pa(&stat), 0, 0, 0, SSC_WAIT_COMPLETION);
+
+	if (stat.count == req.len) {
+		sc->result = GOOD;
+	} else {
+		sc->result = DID_ERROR << 16;
+	}
+}
+
+static void
+simscsi_sg_readwrite (Scsi_Cmnd *sc, int mode, unsigned long offset)
+{
+	int list_len = sc->use_sg;
+	struct scatterlist *sl = (struct scatterlist *)sc->buffer;
+	struct disk_stat stat;
+	struct disk_req req;
+
+	stat.fd = desc[sc->target];
+
+	while (list_len) {
+		req.addr = __pa(page_address(sl->page) + sl->offset);
+		req.len  = sl->length;
+		if (DBG)
+			printk("simscsi_sg_%s @ %lx (off %lx) use_sg=%d len=%d\n",
+			       mode == SSC_READ ? "read":"write", req.addr, offset,
+			       list_len, sl->length);
+		ia64_ssc(stat.fd, 1, __pa(&req), offset, mode);
+		ia64_ssc(__pa(&stat), 0, 0, 0, SSC_WAIT_COMPLETION);
+
+		/* should not happen in our case */
+		if (stat.count != req.len) {
+			sc->result = DID_ERROR << 16;
+			return;
+		}
+		offset +=  sl->length;
+		sl++;
+		list_len--;
+	}
+	sc->result = GOOD;
+}
+
+/*
+ * function handling both READ_6/WRITE_6 (non-scatter/gather mode)
+ * commands.
+ * Added 02/26/99 S.Eranian
+ */
+static void
+simscsi_readwrite6 (Scsi_Cmnd *sc, int mode)
+{
+	unsigned long offset;
+
+	offset = (((sc->cmnd[1] & 0x1f) << 16) | (sc->cmnd[2] << 8) | sc->cmnd[3])*512;
+	if (sc->use_sg > 0)
+		simscsi_sg_readwrite(sc, mode, offset);
+	else
+		simscsi_readwrite(sc, mode, offset, sc->cmnd[4]*512);
+}
+
+
+static void
+simscsi_readwrite10 (Scsi_Cmnd *sc, int mode)
+{
+	unsigned long offset;
+
+	offset = (  (sc->cmnd[2] << 24) | (sc->cmnd[3] << 16)
+		  | (sc->cmnd[4] <<  8) | (sc->cmnd[5] <<  0))*512;
+	if (sc->use_sg > 0)
+		simscsi_sg_readwrite(sc, mode, offset);
+	else
+		simscsi_readwrite(sc, mode, offset, ((sc->cmnd[7] << 8) | sc->cmnd[8])*512);
+}
+
+int
+simscsi_queuecommand (Scsi_Cmnd *sc, void (*done)(Scsi_Cmnd *))
+{
+	char fname[MAX_ROOT_LEN+16];
+	char *buf;
+#if DEBUG_SIMSCSI
+	register long sp asm ("sp");
+
+	if (DBG)
+		printk("simscsi_queuecommand: target=%d,cmnd=%u,sc=%lu,sp=%lx,done=%p\n",
+		       sc->target, sc->cmnd[0], sc->serial_number, sp, done);
+#endif
+
+	sc->result = DID_BAD_TARGET << 16;
+	sc->scsi_done = done;
+	if (sc->target <= 7 && sc->lun == 0) {
+		switch (sc->cmnd[0]) {
+		      case INQUIRY:
+			if (sc->request_bufflen < 35) {
+				break;
+			}
+			sprintf (fname, "%s%c", simscsi_root, 'a' + sc->target);
+			desc[sc->target] = ia64_ssc (__pa(fname), SSC_READ_ACCESS|SSC_WRITE_ACCESS,
+						     0, 0, SSC_OPEN);
+			if (desc[sc->target] < 0) {
+				/* disk doesn't exist... */
+				break;
+			}
+			buf = sc->request_buffer;
+			buf[0] = 0;	/* magnetic disk */
+			buf[1] = 0;	/* not a removable medium */
+			buf[2] = 2;	/* SCSI-2 compliant device */
+			buf[3] = 2;	/* SCSI-2 response data format */
+			buf[4] = 31;	/* additional length (bytes) */
+			buf[5] = 0;	/* reserved */
+			buf[6] = 0;	/* reserved */
+			buf[7] = 0;	/* various flags */
+			memcpy(buf + 8, "HP      SIMULATED DISK  0.00",  28);
+			sc->result = GOOD;
+			break;
+
+		      case TEST_UNIT_READY:
+			sc->result = GOOD;
+			break;
+
+		      case READ_6:
+			if (desc[sc->target] < 0 )
+				break;
+			simscsi_readwrite6(sc, SSC_READ);
+			break;
+
+		      case READ_10:
+			if (desc[sc->target] < 0 )
+				break;
+			simscsi_readwrite10(sc, SSC_READ);
+			break;
+
+		      case WRITE_6:
+			if (desc[sc->target] < 0)
+				break;
+			simscsi_readwrite6(sc, SSC_WRITE);
+			break;
+
+		      case WRITE_10:
+			if (desc[sc->target] < 0)
+				break;
+			simscsi_readwrite10(sc, SSC_WRITE);
+			break;
+
+
+		      case READ_CAPACITY:
+			if (desc[sc->target] < 0 || sc->request_bufflen < 8) {
+				break;
+			}
+			buf = sc->request_buffer;
+
+			/* pretend to be a 1GB disk (partition table contains real stuff): */
+			buf[0] = 0x00;
+			buf[1] = 0x1f;
+			buf[2] = 0xff;
+			buf[3] = 0xff;
+			/* set block size of 512 bytes: */
+			buf[4] = 0;
+			buf[5] = 0;
+			buf[6] = 2;
+			buf[7] = 0;
+			sc->result = GOOD;
+			break;
+
+		      case MODE_SENSE:
+			printk("MODE_SENSE\n");
+			break;
+
+		      case START_STOP:
+			printk("START_STOP\n");
+			break;
+
+		      default:
+			panic("simscsi: unknown SCSI command %u\n", sc->cmnd[0]);
+		}
+	}
+	if (sc->result == DID_BAD_TARGET) {
+		sc->result |= DRIVER_SENSE << 24;
+		sc->sense_buffer[0] = 0x70;
+		sc->sense_buffer[2] = 0x00;
+	}
+	if (atomic_read(&num_reqs) >= SIMSCSI_REQ_QUEUE_LEN) {
+		panic("Attempt to queue command while command is pending!!");
+	}
+	atomic_inc(&num_reqs);
+	queue[wr].sc = sc;
+	wr = (wr + 1) % SIMSCSI_REQ_QUEUE_LEN;
+
+	tasklet_schedule(&simscsi_tasklet);
+	return 0;
+}
+
+
+static Scsi_Host_Template driver_template = SIMSCSI;
+
+#define __initcall(fn)	late_initcall(fn)
+
+#include "../drivers/scsi/scsi_module.c"

arch/ia64/hp/simscsi.h

+/*
+ * Simulated SCSI driver.
+ *
+ * Copyright (C) 1999 Hewlett-Packard Co
+ *	David Mosberger-Tang <davidm@hpl.hp.com>
+ */
+#ifndef SIMSCSI_H
+#define SIMSCSI_H
+
+#define SIMSCSI_REQ_QUEUE_LEN	64
+
+#define DEFAULT_SIMSCSI_ROOT	"/var/ski-disks/sd"
+
+extern int simscsi_detect (Scsi_Host_Template *);
+extern int simscsi_release (struct Scsi_Host *);
+extern const char *simscsi_info (struct Scsi_Host *);
+extern int simscsi_queuecommand (Scsi_Cmnd *, void (*done)(Scsi_Cmnd *));
+extern int simscsi_abort (Scsi_Cmnd *);
+extern int simscsi_reset (Scsi_Cmnd *, unsigned int);
+extern int simscsi_biosparam (Disk *, kdev_t, int[]);
+
+#define SIMSCSI {					\
+	detect:			simscsi_detect,		\
+	release:		simscsi_release,	\
+	info:			simscsi_info,		\
+	queuecommand:		simscsi_queuecommand,	\
+	abort:			simscsi_abort,		\
+	reset:			simscsi_reset,		\
+	bios_param:		simscsi_biosparam,	\
+	can_queue:		SIMSCSI_REQ_QUEUE_LEN,	\
+	this_id:		-1,			\
+	sg_tablesize:		SG_ALL,			\
+	cmd_per_lun:		SIMSCSI_REQ_QUEUE_LEN,	\
+	present:		0,			\
+	unchecked_isa_dma:	0,			\
+	use_clustering:		DISABLE_CLUSTERING	\
+}
+
+#endif /* SIMSCSI_H */

arch/ia64/ia32/ia32_entry.S

 #include <asm/asmmacro.h>
 #include <asm/offsets.h>
 #include <asm/signal.h>
+#include <asm/thread_info.h>
 
 #include "../kernel/minstate.h"
 
@@ -87,18 +88,21 @@ END(sys32_sigsuspend)
 
 GLOBAL_ENTRY(ia32_ret_from_clone)
 	PT_REGS_UNWIND_INFO(0)
+#if defined(CONFIG_SMP) || defined(CONFIG_PREEMPT)
 	/*
 	 * We need to call schedule_tail() to complete the scheduling process.
 	 * Called by ia64_switch_to after do_fork()->copy_thread().  r8 contains the
 	 * address of the previously executing task.
 	 */
 	br.call.sptk.many rp=ia64_invoke_schedule_tail
-.ret1:	adds r2=IA64_TASK_PTRACE_OFFSET,r13
+.ret1:
+#endif
+	adds r2=TI_FLAGS+IA64_TASK_SIZE,r13
 	;;
-	ld8 r2=[r2]
+	ld4 r2=[r2]
 	;;
 	mov r8=0
-	tbit.nz p6,p0=r2,PT_SYSCALLTRACE_BIT
+	tbit.nz p6,p0=r2,TIF_SYSCALL_TRACE
 (p6)	br.cond.spnt .ia32_strace_check_retval
 	;;					// prevent RAW on r8
 END(ia32_ret_from_clone)

arch/ia64/ia32/ia32_traps.c

@@ -20,7 +20,7 @@ ia32_intercept (struct pt_regs *regs, unsigned long isr)
 {
 	switch ((isr >> 16) & 0xff) {
 	      case 0:	/* Instruction intercept fault */
-	      case 3:	/* Locked Data reference fault */
+	      case 4:	/* Locked Data reference fault */
 	      case 1:	/* Gate intercept trap */
 		return -1;
 

arch/ia64/kernel/entry.S

@@ -486,6 +486,7 @@ END(ia64_trace_syscall)
 
 GLOBAL_ENTRY(ia64_ret_from_clone)
 	PT_REGS_UNWIND_INFO(0)
+#if defined(CONFIG_SMP) || defined(CONFIG_PREEMPT)
 	/*
 	 * We need to call schedule_tail() to complete the scheduling process.
 	 * Called by ia64_switch_to after do_fork()->copy_thread().  r8 contains the
@@ -493,6 +494,7 @@ GLOBAL_ENTRY(ia64_ret_from_clone)
 	 */
 	br.call.sptk.many rp=ia64_invoke_schedule_tail
 .ret8:
+#endif
 	adds r2=TI_FLAGS+IA64_TASK_SIZE,r13
 	;;
 	ld4 r2=[r2]
@@ -620,7 +622,7 @@ GLOBAL_ENTRY(ia64_leave_kernel)
 	shr.u r18=r19,16	// get byte size of existing "dirty" partition
 	;;
 	mov r16=ar.bsp		// get existing backing store pointer
-	movl r17=PERCPU_ADDR+IA64_CPU_PHYS_STACKED_SIZE_P8_OFFSET
+	movl r17=THIS_CPU(ia64_phys_stacked_size_p8)
 	;;
 	ld4 r17=[r17]		// r17 = cpu_data->phys_stacked_size_p8
 (pKern)	br.cond.dpnt skip_rbs_switch
@@ -756,6 +758,7 @@ ENTRY(handle_syscall_error)
 	br.cond.sptk ia64_leave_kernel
 END(handle_syscall_error)
 
+#ifdef CONFIG_SMP
 	/*
 	 * Invoke schedule_tail(task) while preserving in0-in7, which may be needed
 	 * in case a system call gets restarted.
@@ -772,6 +775,8 @@ GLOBAL_ENTRY(ia64_invoke_schedule_tail)
 	br.ret.sptk.many rp
 END(ia64_invoke_schedule_tail)
 
+#endif /* CONFIG_SMP */
+
 #if __GNUC__ < 3
 
 	/*

arch/ia64/kernel/ia64_ksyms.c

@@ -59,7 +59,7 @@ EXPORT_SYMBOL(clear_page);
 
 #include <asm/processor.h>
 # ifndef CONFIG_NUMA
-EXPORT_SYMBOL(_cpu_data);
+EXPORT_SYMBOL(cpu_info);
 # endif
 EXPORT_SYMBOL(kernel_thread);
 

arch/ia64/kernel/ivt.S

@@ -645,7 +645,6 @@ ENTRY(break_fault)
 
 	mov r3=255
 	adds r15=-1024,r15			// r15 contains the syscall number---subtract 1024
-	adds r2=IA64_TASK_PTRACE_OFFSET,r13	// r2 = &current->ptrace
 	;;
 	cmp.geu p6,p7=r3,r15		// (syscall > 0 && syscall <= 1024+255) ?
 	movl r16=sys_call_table

arch/ia64/kernel/process.c

@@ -193,7 +193,10 @@ ia64_save_extra (struct task_struct *task)
 	if ((task->thread.flags & IA64_THREAD_PM_VALID) != 0)
 		pfm_save_regs(task);
 
-	if (local_cpu_data->pfm_syst_wide) pfm_syst_wide_update_task(task, 0);
+# ifdef CONFIG_SMP
+	if (local_cpu_data->pfm_syst_wide)
+		pfm_syst_wide_update_task(task, 0);
+# endif
 #endif
 
 	if (IS_IA32_PROCESS(ia64_task_regs(task)))
@@ -210,7 +213,9 @@ ia64_load_extra (struct task_struct *task)
 	if ((task->thread.flags & IA64_THREAD_PM_VALID) != 0)
 		pfm_load_regs(task);
 
+# ifdef CONFIG_SMP
 	if (local_cpu_data->pfm_syst_wide) pfm_syst_wide_update_task(task, 1);
+# endif
 #endif
 
 	if (IS_IA32_PROCESS(ia64_task_regs(task)))

arch/ia64/kernel/setup.c

@@ -54,12 +54,10 @@
 
 extern char _end;
 
-#ifdef CONFIG_NUMA
- struct cpuinfo_ia64 *boot_cpu_data;
-#else
- struct cpuinfo_ia64 _cpu_data[NR_CPUS] __attribute__ ((section ("__special_page_section")));
-#endif
+unsigned long __per_cpu_offset[NR_CPUS];
+struct cpuinfo_ia64 cpu_info __per_cpu_data;
 
+unsigned long ia64_phys_stacked_size_p8;
 unsigned long ia64_cycles_per_usec;
 struct ia64_boot_param *ia64_boot_param;
 struct screen_info screen_info;
@@ -511,6 +509,12 @@ identify_cpu (struct cpuinfo_ia64 *c)
 	c->unimpl_pa_mask = ~((1L<<63) | ((1L << phys_addr_size) - 1));
 }
 
+void
+setup_per_cpu_areas (void)
+{
+	/* start_kernel() requires this... */
+}
+
 /*
  * cpu_init() initializes state that is per-CPU.  This function acts
  * as a 'CPU state barrier', nothing should get across.
@@ -518,46 +522,21 @@ identify_cpu (struct cpuinfo_ia64 *c)
 void
 cpu_init (void)
 {
+	extern char __per_cpu_start[], __phys_per_cpu_start[], __per_cpu_end[];
 	extern void __init ia64_mmu_init (void *);
 	unsigned long num_phys_stacked;
 	pal_vm_info_2_u_t vmi;
 	unsigned int max_ctx;
-	struct cpuinfo_ia64 *my_cpu_data;
-#ifdef CONFIG_NUMA
-	int cpu, order;
+	struct cpuinfo_ia64 *my_cpu_info;
+	void *my_cpu_data;
+	int cpu = smp_processor_id();
 
-	/*
-	 * If NUMA is configured, the cpu_data array is not preallocated. The boot cpu
-	 * allocates entries for every possible cpu. As the remaining cpus come online,
-	 * they reallocate a new cpu_data structure on their local node. This extra work
-	 * is required because some boot code references all cpu_data structures
-	 * before the cpus are actually started.
-	 */
-	if (!boot_cpu_data) {
-		my_cpu_data = alloc_bootmem_pages_node(NODE_DATA(numa_node_id()),
-						       sizeof(struct cpuinfo_ia64));
-		boot_cpu_data = my_cpu_data;
-		my_cpu_data->cpu_data[0] = my_cpu_data;
-		for (cpu = 1; cpu < NR_CPUS; ++cpu)
-			my_cpu_data->cpu_data[cpu]
-				= alloc_bootmem_pages_node(NODE_DATA(numa_node_id()),
-							   sizeof(struct cpuinfo_ia64));
-		for (cpu = 1; cpu < NR_CPUS; ++cpu)
-			memcpy(my_cpu_data->cpu_data[cpu]->cpu_data,
-			       my_cpu_data->cpu_data, sizeof(my_cpu_data->cpu_data));
-	} else {
-		order = get_order(sizeof(struct cpuinfo_ia64));
-		my_cpu_data = page_address(alloc_pages_node(numa_node_id(), GFP_KERNEL, order));
-		memcpy(my_cpu_data, boot_cpu_data->cpu_data[smp_processor_id()],
-		       sizeof(struct cpuinfo_ia64));
-		__free_pages(virt_to_page(boot_cpu_data->cpu_data[smp_processor_id()]),
-			     order);
-		for (cpu = 0; cpu < NR_CPUS; ++cpu)
-			boot_cpu_data->cpu_data[cpu]->cpu_data[smp_processor_id()] = my_cpu_data;
-	}
-#else
-	my_cpu_data = cpu_data(smp_processor_id());
-#endif
+	my_cpu_data = alloc_bootmem_pages(__per_cpu_end - __per_cpu_start);
+	memcpy(my_cpu_data, __phys_per_cpu_start, __per_cpu_end - __per_cpu_start);
+
+	__per_cpu_offset[cpu] = (char *) my_cpu_data - __per_cpu_start;
+
+	my_cpu_info = my_cpu_data + ((char *) &cpu_info - __per_cpu_start);
 
 	/*
 	 * We can't pass "local_cpu_data" to identify_cpu() because we haven't called
@@ -565,7 +544,7 @@ cpu_init (void)
 	 * depends on the data returned by identify_cpu().  We break the dependency by
 	 * accessing cpu_data() the old way, through identity mapped space.
 	 */
-	identify_cpu(my_cpu_data);
+	identify_cpu(my_cpu_info);
 
 	/* Clear the stack memory reserved for pt_regs: */
 	memset(ia64_task_regs(current), 0, sizeof(struct pt_regs));
@@ -626,7 +605,7 @@ cpu_init (void)
 		printk ("cpu_init: PAL RSE info failed, assuming 96 physical stacked regs\n");
 		num_phys_stacked = 96;
 	}
-	local_cpu_data->phys_stacked_size_p8 = num_phys_stacked*8 + 8;
-
+	/* size of physical stacked register partition plus 8 bytes: */
+	ia64_phys_stacked_size_p8 = num_phys_stacked*8 + 8;
 	platform_cpu_init();
 }

arch/ia64/kernel/smp.c

@@ -75,12 +75,11 @@ struct call_data_struct {
 
 static volatile struct call_data_struct *call_data;
 
-static spinlock_t migration_lock = SPIN_LOCK_UNLOCKED;
-static task_t *migrating_task;
-
 #define IPI_CALL_FUNC		0
 #define IPI_CPU_STOP		1
-#define IPI_MIGRATE_TASK	2
+
+/* This needs to be cacheline aligned because it is written to by *other* CPUs.  */
+static __u64 ipi_operation __per_cpu_data ____cacheline_aligned;
 
 static void
 stop_this_cpu (void)
@@ -99,7 +98,7 @@ void
 handle_IPI (int irq, void *dev_id, struct pt_regs *regs)
 {
 	int this_cpu = smp_processor_id();
-	unsigned long *pending_ipis = &local_cpu_data->ipi_operation;
+	unsigned long *pending_ipis = &this_cpu(ipi_operation);
 	unsigned long ops;
 
 	/* Count this now; we may make a call that never returns. */
@@ -143,14 +142,6 @@ handle_IPI (int irq, void *dev_id, struct pt_regs *regs)
 			      }
 			      break;
 
-			      case IPI_MIGRATE_TASK:
-			      {
-				      task_t *p = migrating_task;
-				      spin_unlock(&migration_lock);
-				      sched_task_migrated(p);
-			      }
-			      break;
-
 			      case IPI_CPU_STOP:
 				stop_this_cpu();
 				break;
@@ -167,7 +158,7 @@ handle_IPI (int irq, void *dev_id, struct pt_regs *regs)
 static inline void
 send_IPI_single (int dest_cpu, int op)
 {
-	set_bit(op, &cpu_data(dest_cpu)->ipi_operation);
+	set_bit(op, &per_cpu(ipi_operation, dest_cpu));
 	platform_send_ipi(dest_cpu, IA64_IPI_VECTOR, IA64_IPI_DM_INT, 0);
 }
 
@@ -350,15 +341,6 @@ smp_send_stop (void)
 	smp_num_cpus = 1;
 }
 
-void
-smp_migrate_task (int cpu, task_t *p)
-{
-	/* The target CPU will unlock the migration spinlock: */
-	spin_lock(&migration_lock);
-	migrating_task = p;
-	send_IPI_single(cpu, IPI_MIGRATE_TASK);
-}
-
 int __init
 setup_profiling_timer (unsigned int multiplier)
 {

arch/ia64/kernel/unaligned.c

@@ -1305,11 +1305,7 @@ ia64_handle_unaligned (unsigned long ifa, struct pt_regs *regs)
 	 * handler into reading an arbitrary kernel addresses...
 	 */
 	if (!user_mode(regs)) {
-#ifdef GAS_HAS_LOCAL_TAGS
-		fix = search_exception_table(regs->cr_iip + ia64_psr(regs)->ri);
-#else
-		fix = search_exception_table(regs->cr_iip);
-#endif
+		fix = SEARCH_EXCEPTION_TABLE(regs);
 	}
 	if (user_mode(regs) || fix.cont) {
 		if ((current->thread.flags & IA64_THREAD_UAC_SIGBUS) != 0)

arch/ia64/lib/clear_page.S

@@ -18,7 +18,7 @@
 # define PREFETCH_LINES	9	// magic number
 #else
 # define L3_LINE_SIZE	128	// McKinley L3 line size
-# define PREFETCH_LINES	7	// magic number
+# define PREFETCH_LINES	12	// magic number
 #endif
 
 #define saved_lc	r2

arch/ia64/mm/fault.c

@@ -49,7 +49,6 @@ ia64_do_page_fault (unsigned long address, unsigned long isr, struct pt_regs *re
 	int signal = SIGSEGV, code = SEGV_MAPERR;
 	struct vm_area_struct *vma, *prev_vma;
 	struct mm_struct *mm = current->mm;
-	struct exception_fixup fix;
 	struct siginfo si;
 	unsigned long mask;
 
@@ -167,15 +166,8 @@ ia64_do_page_fault (unsigned long address, unsigned long isr, struct pt_regs *re
 		return;
 	}
 
-#ifdef GAS_HAS_LOCAL_TAGS
-	fix = search_exception_table(regs->cr_iip + ia64_psr(regs)->ri);
-#else
-	fix = search_exception_table(regs->cr_iip);
-#endif
-	if (fix.cont) {
-		handle_exception(regs, fix);
+	if (done_with_exception(regs))
 		return;
-	}
 
 	/*
 	 * Oops. The kernel tried to access some bad page. We'll have to terminate things

arch/ia64/mm/init.c

@@ -103,12 +103,12 @@ free_initmem (void)
 		free_page(addr);
 		++totalram_pages;
 	}
-	printk ("Freeing unused kernel memory: %ldkB freed\n",
+	printk(KERN_INFO "Freeing unused kernel memory: %ldkB freed\n",
 	       (&__init_end - &__init_begin) >> 10);
 }
 
 void
-free_initrd_mem(unsigned long start, unsigned long end)
+free_initrd_mem (unsigned long start, unsigned long end)
 {
 	/*
 	 * EFI uses 4KB pages while the kernel can use 4KB  or bigger.
@@ -145,7 +145,7 @@ free_initrd_mem(unsigned long start, unsigned long end)
 	end = end & PAGE_MASK;
 
 	if (start < end)
-		printk ("Freeing initrd memory: %ldkB freed\n", (end - start) >> 10);
+		printk(KERN_INFO "Freeing initrd memory: %ldkB freed\n", (end - start) >> 10);
 
 	for (; start < end; start += PAGE_SIZE) {
 		if (!VALID_PAGE(virt_to_page(start)))

arch/ia64/tools/print_offsets.awk

@@ -7,12 +7,6 @@ BEGIN {
 	print " * This file was generated by arch/ia64/tools/print_offsets.awk."
 	print " *"
 	print " */"
-	#
-	# This is a cheesy hack.  Make sure that
-	# PT_PTRACED == 1<<PT_PTRACED_BIT.
-	#
-	print "#define PT_PTRACED_BIT		0"
-	print "#define PT_SYSCALLTRACE_BIT	1"
 }
 
 # look for .tab:

arch/ia64/tools/print_offsets.c

@@ -52,14 +52,7 @@ tab[] =
     { "SIGFRAME_SIZE",			sizeof (struct sigframe) },
     { "UNW_FRAME_INFO_SIZE",		sizeof (struct unw_frame_info) },
     { "", 0 },			/* spacer */
-    { "IA64_TASK_PTRACE_OFFSET",	offsetof (struct task_struct, ptrace) },
-    { "IA64_TASK_THREAD_OFFSET",	offsetof (struct task_struct, thread) },
     { "IA64_TASK_THREAD_KSP_OFFSET",	offsetof (struct task_struct, thread.ksp) },
-#ifdef CONFIG_PERFMON
-    { "IA64_TASK_PFM_OVFL_BLOCK_RESET_OFFSET",offsetof(struct task_struct, thread.pfm_ovfl_block_reset) },
-#endif
-    { "IA64_TASK_PID_OFFSET",		offsetof (struct task_struct, pid) },
-    { "IA64_TASK_MM_OFFSET",		offsetof (struct task_struct, mm) },
     { "IA64_PT_REGS_CR_IPSR_OFFSET",	offsetof (struct pt_regs, cr_ipsr) },
     { "IA64_PT_REGS_CR_IIP_OFFSET",	offsetof (struct pt_regs, cr_iip) },
     { "IA64_PT_REGS_CR_IFS_OFFSET",	offsetof (struct pt_regs, cr_ifs) },
@@ -169,9 +162,6 @@ tab[] =
     { "IA64_SIGFRAME_SIGCONTEXT_OFFSET",	offsetof (struct sigframe, sc) },
     { "IA64_CLONE_VFORK",		CLONE_VFORK },
     { "IA64_CLONE_VM",			CLONE_VM },
-    { "IA64_CPU_IRQ_COUNT_OFFSET",	offsetof (struct cpuinfo_ia64, irq_stat.f.irq_count) },
-    { "IA64_CPU_BH_COUNT_OFFSET",	offsetof (struct cpuinfo_ia64, irq_stat.f.bh_count) },
-    { "IA64_CPU_PHYS_STACKED_SIZE_P8_OFFSET",offsetof (struct cpuinfo_ia64, phys_stacked_size_p8)},
 };
 
 static const char *tabs = "\t\t\t\t\t\t\t\t\t\t";
@@ -189,16 +179,6 @@ main (int argc, char **argv)
   printf ("/*\n * DO NOT MODIFY\n *\n * This file was generated by "
 	  "arch/ia64/tools/print_offsets.\n *\n */\n\n");
 
-  /* This is stretching things a bit, but entry.S needs the bit number
-     for PT_PTRACED and it can't include <linux/sched.h> so this seems
-     like a reasonably solution.  At least the code won't break in
-     subtle ways should PT_PTRACED ever change.  Ditto for
-     PT_TRACESYS_BIT. */
-  printf ("#define PT_PTRACED_BIT\t\t\t%u\n", ffs (PT_PTRACED) - 1);
-#if 0
-  printf ("#define PT_SYSCALLTRACE_BIT\t\t\t%u\n\n", ffs (PT_SYSCALLTRACE) - 1);
-#endif
-
   for (i = 0; i < sizeof (tab) / sizeof (tab[0]); ++i)
     {
       if (tab[i].name[0] == '\0')

arch/ia64/vmlinux.lds.S

 #include <linux/config.h>
 
+#include <asm/cache.h>
 #include <asm/ptrace.h>
 #include <asm/system.h>
 
@@ -70,11 +71,6 @@ SECTIONS
 	{ *(__ksymtab) }
   __stop___ksymtab = .;
 
-  __start___kallsyms = .;	/* All kernel symbols for debugging */
-  __kallsyms : AT(ADDR(__kallsyms) - PAGE_OFFSET)
-	{ *(__kallsyms) }
-  __stop___kallsyms = .;
-
   /* Unwind info & table: */
   . = ALIGN(8);
   .IA_64.unwind_info : AT(ADDR(.IA_64.unwind_info) - PAGE_OFFSET)
@@ -124,10 +120,7 @@ SECTIONS
   .data.init_task : AT(ADDR(.data.init_task) - PAGE_OFFSET)
 	{ *(.data.init_task) }
 
-  .data.page_aligned : AT(ADDR(.data.page_aligned) - PAGE_OFFSET)
-        { *(.data.idt) }
-
-  . = ALIGN(64);
+  . = ALIGN(SMP_CACHE_BYTES);
   .data.cacheline_aligned : AT(ADDR(.data.cacheline_aligned) - PAGE_OFFSET)
         { *(.data.cacheline_aligned) }
 
@@ -135,6 +128,17 @@ SECTIONS
   .kstrtab : AT(ADDR(.kstrtab) - PAGE_OFFSET)
 	{ *(.kstrtab) }
 
+  /* Per-cpu data: */
+  . = ALIGN(PAGE_SIZE);
+  __phys_per_cpu_start = .;
+  .data.percpu PERCPU_ADDR : AT(__phys_per_cpu_start - PAGE_OFFSET)
+	{
+		__per_cpu_start = .;
+		*(.data.percpu)
+		__per_cpu_end = .;
+	}
+  . = __phys_per_cpu_start + 4096;	/* ensure percpu fits into smallest page size (4KB) */
+
   .data : AT(ADDR(.data) - PAGE_OFFSET)
 	{ *(.data) *(.gnu.linkonce.d*) CONSTRUCTORS }
 
@@ -151,7 +155,7 @@ SECTIONS
 	{ *(.sbss) *(.scommon) }
   .bss : AT(ADDR(.bss) - PAGE_OFFSET)
 	{ *(.bss) *(COMMON) }
-  . = ALIGN(64 / 8);
+
   _end = .;
 
   /* Stabs debugging sections.  */

include/asm-ia64/bitops.h

@@ -9,6 +9,8 @@
  *	    scheduler patch
  */
 
+#include <linux/types.h>
+
 #include <asm/system.h>
 
 /**
@@ -97,7 +99,7 @@ clear_bit (int nr, volatile void *addr)
 static __inline__ void
 __clear_bit (int nr, volatile void *addr)
 {
-	volatile __u32 *p = (__u32 *) addr + (nr >> 5);;
+	volatile __u32 *p = (__u32 *) addr + (nr >> 5);
 	__u32 m = 1 << (nr & 31);
 	*p &= ~m;
 }

include/asm-ia64/cache.h

@@ -5,7 +5,7 @@
 
 /*
  * Copyright (C) 1998-2000 Hewlett-Packard Co
- * Copyright (C) 1998-2000 David Mosberger-Tang <davidm@hpl.hp.com>
+ *	David Mosberger-Tang <davidm@hpl.hp.com>
  */
 
 /* Bytes per L1 (data) cache line.  */

include/asm-ia64/hardirq.h

@@ -2,8 +2,8 @@
 #define _ASM_IA64_HARDIRQ_H
 
 /*
- * Copyright (C) 1998-2001 Hewlett-Packard Co
- * Copyright (C) 1998-2001 David Mosberger-Tang <davidm@hpl.hp.com>
+ * Copyright (C) 1998-2002 Hewlett-Packard Co
+ *	David Mosberger-Tang <davidm@hpl.hp.com>
  */
 
 #include <linux/config.h>

include/asm-ia64/mman.h

@@ -9,6 +9,7 @@
 #define PROT_READ	0x1		/* page can be read */
 #define PROT_WRITE	0x2		/* page can be written */
 #define PROT_EXEC	0x4		/* page can be executed */
+#define PROT_SEM	0x8		/* page may be used for atomic ops */
 #define PROT_NONE	0x0		/* page can not be accessed */
 
 #define MAP_SHARED	0x01		/* Share changes */

include/asm-ia64/offsets.h

@@ -6,23 +6,16 @@
  * This file was generated by arch/ia64/tools/print_offsets.awk.
  *
  */
-#define PT_PTRACED_BIT		0
-#define PT_SYSCALLTRACE_BIT	1
 #define IA64_TASK_SIZE			3936	/* 0xf60 */
 #define IA64_THREAD_INFO_SIZE		24	/* 0x18 */
 #define IA64_PT_REGS_SIZE		400	/* 0x190 */
 #define IA64_SWITCH_STACK_SIZE		560	/* 0x230 */
 #define IA64_SIGINFO_SIZE		128	/* 0x80 */
-#define IA64_CPU_SIZE			16384	/* 0x4000 */
+#define IA64_CPU_SIZE			224	/* 0xe0 */
 #define SIGFRAME_SIZE			2816	/* 0xb00 */
 #define UNW_FRAME_INFO_SIZE		448	/* 0x1c0 */
 
-#define IA64_TASK_PTRACE_OFFSET		32	/* 0x20 */
-#define IA64_TASK_THREAD_OFFSET		1472	/* 0x5c0 */
 #define IA64_TASK_THREAD_KSP_OFFSET	1480	/* 0x5c8 */
-#define IA64_TASK_PFM_OVFL_BLOCK_RESET_OFFSET 2096	/* 0x830 */
-#define IA64_TASK_PID_OFFSET		212	/* 0xd4 */
-#define IA64_TASK_MM_OFFSET		136	/* 0x88 */
 #define IA64_PT_REGS_CR_IPSR_OFFSET	0	/* 0x0 */
 #define IA64_PT_REGS_CR_IIP_OFFSET	8	/* 0x8 */
 #define IA64_PT_REGS_CR_IFS_OFFSET	16	/* 0x10 */
@@ -132,8 +125,5 @@
 #define IA64_SIGFRAME_SIGCONTEXT_OFFSET	160	/* 0xa0 */
 #define IA64_CLONE_VFORK		16384	/* 0x4000 */
 #define IA64_CLONE_VM			256	/* 0x100 */
-#define IA64_CPU_IRQ_COUNT_OFFSET	0	/* 0x0 */
-#define IA64_CPU_BH_COUNT_OFFSET	4	/* 0x4 */
-#define IA64_CPU_PHYS_STACKED_SIZE_P8_OFFSET 12	/* 0xc */
 
 #endif /* _ASM_IA64_OFFSETS_H */

include/asm-ia64/processor.h

@@ -15,6 +15,8 @@
 
 #include <linux/config.h>
 
+#include <linux/compiler.h>
+
 #include <asm/ptrace.h>
 #include <asm/kregs.h>
 #include <asm/system.h>
@@ -184,6 +186,10 @@
  */
 #define IA64_USEC_PER_CYC_SHIFT	41
 
+#define __HAVE_ARCH_PER_CPU
+
+#define THIS_CPU(var)	(var)
+
 #ifndef __ASSEMBLY__
 
 #include <linux/threads.h>
@@ -196,6 +202,11 @@
 #include <asm/unwind.h>
 #include <asm/atomic.h>
 
+extern unsigned long __per_cpu_offset[NR_CPUS];
+
+#define per_cpu(var, cpu)	(*(__typeof__(&(var))) ((void *) &(var) + __per_cpu_offset[cpu]))
+#define this_cpu(var)		(var)
+
 /* like above but expressed as bitfields for more efficient access: */
 struct ia64_psr {
 	__u64 reserved0 : 1;
@@ -239,7 +250,7 @@ struct ia64_psr {
  * CPU type, hardware bug flags, and per-CPU state.  Frequently used
  * state comes earlier:
  */
-struct cpuinfo_ia64 {
+extern struct cpuinfo_ia64 {
 	/* irq_stat must be 64-bit aligned */
 	union {
 		struct {
@@ -249,7 +260,6 @@ struct cpuinfo_ia64 {
 		__u64 irq_and_bh_counts;
 	} irq_stat;
 	__u32 softirq_pending;
-	__u32 phys_stacked_size_p8;	/* size of physical stacked registers + 8 */
 	__u64 itm_delta;	/* # of clock cycles between clock ticks */
 	__u64 itm_next;		/* interval timer mask value to use for next clock tick */
 	__u64 *pgd_quick;
@@ -282,41 +292,15 @@ struct cpuinfo_ia64 {
 	__u64 prof_multiplier;
 	__u32 pfm_syst_wide;
 	__u32 pfm_dcr_pp;
-	/* this is written to by *other* CPUs: */
-	__u64 ipi_operation ____cacheline_aligned;
-#endif
-#ifdef CONFIG_NUMA
-	void *node_directory;
-	int numa_node_id;
-	struct cpuinfo_ia64 *cpu_data[NR_CPUS];
 #endif
-	/* Platform specific word.  MUST BE LAST IN STRUCT */
-	__u64 platform_specific;
-} __attribute__ ((aligned (PAGE_SIZE))) ;
+} cpu_info __per_cpu_data;
 
 /*
  * The "local" data pointer.  It points to the per-CPU data of the currently executing
  * CPU, much like "current" points to the per-task data of the currently executing task.
  */
-#define local_cpu_data		((struct cpuinfo_ia64 *) PERCPU_ADDR)
-
-/*
- * On NUMA systems, cpu_data for each cpu is allocated during cpu_init() & is allocated on
- * the node that contains the cpu. This minimizes off-node memory references.  cpu_data
- * for each cpu contains an array of pointers to the cpu_data structures of each of the
- * other cpus.
- *
- * On non-NUMA systems, cpu_data is a static array allocated at compile time.  References
- * to the cpu_data of another cpu is done by direct references to the appropriate entry of
- * the array.
- */
-#ifdef CONFIG_NUMA
-# define cpu_data(cpu)		local_cpu_data->cpu_data[cpu]
-# define numa_node_id()		(local_cpu_data->numa_node_id)
-#else
-  extern struct cpuinfo_ia64 _cpu_data[NR_CPUS];
-# define cpu_data(cpu)		(&_cpu_data[cpu])
-#endif
+#define local_cpu_data		(&this_cpu(cpu_info))
+#define cpu_data(cpu)		(&per_cpu(cpu_info, cpu))
 
 extern void identify_cpu (struct cpuinfo_ia64 *);
 extern void print_cpu_info (struct cpuinfo_ia64 *);

include/asm-ia64/siginfo.h

@@ -136,6 +136,7 @@ typedef struct siginfo {
 #define SI_ASYNCIO	(-4)		/* sent by AIO completion */
 #define SI_SIGIO	(-5)		/* sent by queued SIGIO */
 #define SI_TKILL	(-6)		/* sent by tkill system call */
+#define SI_DETHREAD	(-7)		/* sent by execve() killing subsidiary threads */
 
 #define SI_FROMUSER(siptr)	((siptr)->si_code <= 0)
 #define SI_FROMKERNEL(siptr)	((siptr)->si_code > 0)

include/asm-ia64/smplock.h

@@ -12,30 +12,36 @@
 
 extern spinlock_t kernel_flag;
 
-#define kernel_locked()		spin_is_locked(&kernel_flag)
+#ifdef CONFIG_SMP
+# define kernel_locked()	spin_is_locked(&kernel_flag)
+# define check_irq_holder(cpu)			\
+do {						\
+	if (global_irq_holder == (cpu))		\
+		BUG();				\
+} while (0)
+#else
+# define kernel_locked()	(1)
+#endif
 
 /*
  * Release global kernel lock and global interrupt lock
  */
-static __inline__ void
-release_kernel_lock(struct task_struct *task, int cpu)
-{
-	if (unlikely(task->lock_depth >= 0)) {
-		spin_unlock(&kernel_flag);
-		if (global_irq_holder == (cpu))	\
-			BUG();			\
-	}
-}
+#define release_kernel_lock(task, cpu)		\
+do {						\
+	if (unlikely(task->lock_depth >= 0)) {	\
+		spin_unlock(&kernel_flag);	\
+		check_irq_holder(cpu);		\
+	}					\
+} while (0)
 
 /*
  * Re-acquire the kernel lock
  */
-static __inline__ void
-reacquire_kernel_lock(struct task_struct *task)
-{
-	if (unlikely(task->lock_depth >= 0))
-		spin_lock(&kernel_flag);
-}
+#define reacquire_kernel_lock(task)		\
+do {						\
+	if (unlikely(task->lock_depth >= 0))	\
+		spin_lock(&kernel_flag);	\
+} while (0)
 
 /*
  * Getting the big kernel lock.

include/asm-ia64/system.h

@@ -397,7 +397,11 @@ extern void ia64_load_extra (struct task_struct *task);
 } while (0)
 
 #ifdef CONFIG_SMP
-  /*
+
+/* Return true if this CPU can call the console drivers in printk() */
+#define arch_consoles_callable() (cpu_online_map & (1UL << smp_processor_id()))
+
+/*
  * In the SMP case, we save the fph state when context-switching
  * away from a thread that modified fph.  This way, when the thread
  * gets scheduled on another CPU, the CPU can pick up the state from

include/asm-ia64/uaccess.h

@@ -320,4 +320,22 @@ struct exception_fixup {
 extern struct exception_fixup search_exception_table (unsigned long addr);
 extern void handle_exception (struct pt_regs *regs, struct exception_fixup fixup);
 
+#ifdef GAS_HAS_LOCAL_TAGS
+#define SEARCH_EXCEPTION_TABLE(regs) search_exception_table(regs->cr_iip + ia64_psr(regs)->ri);
+#else
+#define SEARCH_EXCEPTION_TABLE(regs) search_exception_table(regs->cr_iip);
+#endif
+
+static inline int
+done_with_exception (struct pt_regs *regs)
+{
+	struct exception_fixup fix;
+	fix = SEARCH_EXCEPTION_TABLE(regs);
+	if (fix.cont) {
+		handle_exception(regs, fix);
+		return 1;
+	}
+	return 0;
+}
+
 #endif /* _ASM_IA64_UACCESS_H */

kernel/sched.c

@@ -1452,8 +1452,10 @@ void __init init_idle(task_t *idle, int cpu)
 	set_tsk_need_resched(idle);
 	__restore_flags(flags);
 
+#ifdef CONFIG_PREEMPT
 	/* Set the preempt count _outside_ the spinlocks! */
 	idle->thread_info->preempt_count = (idle->lock_depth >= 0);
+#endif
 }
 
 extern void init_timervecs(void);