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-rw-r--r--arch/arm/include/asm/cnt32_to_63.h78
-rw-r--r--arch/arm/kernel/kgdb.c2
-rw-r--r--arch/arm/mach-pxa/time.c2
-rw-r--r--arch/arm/mach-sa1100/generic.c2
-rw-r--r--arch/arm/mach-versatile/core.c2
-rw-r--r--arch/m32r/Kconfig10
-rw-r--r--arch/m32r/kernel/entry.S2
-rw-r--r--arch/m32r/kernel/head.S1
-rw-r--r--arch/m32r/kernel/irq.c6
-rw-r--r--arch/m32r/kernel/m32r_ksyms.c2
-rw-r--r--arch/m32r/kernel/process.c30
-rw-r--r--arch/m32r/kernel/smp.c4
-rw-r--r--arch/m32r/kernel/time.c5
-rw-r--r--arch/m32r/kernel/traps.c8
-rw-r--r--arch/m32r/lib/delay.c2
-rw-r--r--arch/mips/au1000/common/gpio.c6
-rw-r--r--arch/mips/kernel/kgdb.c3
-rw-r--r--arch/mips/pci/Makefile1
-rw-r--r--arch/mips/pci/pci-bcm47xx.c60
-rw-r--r--arch/mips/pci/pci-ip27.c40
-rw-r--r--arch/mn10300/kernel/time.c52
-rw-r--r--arch/powerpc/kernel/kgdb.c5
-rw-r--r--arch/x86/kernel/kgdb.c43
-rw-r--r--arch/x86/kernel/process_32.c1
24 files changed, 192 insertions, 175 deletions
diff --git a/arch/arm/include/asm/cnt32_to_63.h b/arch/arm/include/asm/cnt32_to_63.h
deleted file mode 100644
index 480c873fa74..00000000000
--- a/arch/arm/include/asm/cnt32_to_63.h
+++ /dev/null
@@ -1,78 +0,0 @@
-/*
- * include/asm/cnt32_to_63.h -- extend a 32-bit counter to 63 bits
- *
- * Author: Nicolas Pitre
- * Created: December 3, 2006
- * Copyright: MontaVista Software, Inc.
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License version 2
- * as published by the Free Software Foundation.
- */
-
-#ifndef __INCLUDE_CNT32_TO_63_H__
-#define __INCLUDE_CNT32_TO_63_H__
-
-#include <linux/compiler.h>
-#include <asm/types.h>
-#include <asm/byteorder.h>
-
-/*
- * Prototype: u64 cnt32_to_63(u32 cnt)
- * Many hardware clock counters are only 32 bits wide and therefore have
- * a relatively short period making wrap-arounds rather frequent. This
- * is a problem when implementing sched_clock() for example, where a 64-bit
- * non-wrapping monotonic value is expected to be returned.
- *
- * To overcome that limitation, let's extend a 32-bit counter to 63 bits
- * in a completely lock free fashion. Bits 0 to 31 of the clock are provided
- * by the hardware while bits 32 to 62 are stored in memory. The top bit in
- * memory is used to synchronize with the hardware clock half-period. When
- * the top bit of both counters (hardware and in memory) differ then the
- * memory is updated with a new value, incrementing it when the hardware
- * counter wraps around.
- *
- * Because a word store in memory is atomic then the incremented value will
- * always be in synch with the top bit indicating to any potential concurrent
- * reader if the value in memory is up to date or not with regards to the
- * needed increment. And any race in updating the value in memory is harmless
- * as the same value would simply be stored more than once.
- *
- * The only restriction for the algorithm to work properly is that this
- * code must be executed at least once per each half period of the 32-bit
- * counter to properly update the state bit in memory. This is usually not a
- * problem in practice, but if it is then a kernel timer could be scheduled
- * to manage for this code to be executed often enough.
- *
- * Note that the top bit (bit 63) in the returned value should be considered
- * as garbage. It is not cleared here because callers are likely to use a
- * multiplier on the returned value which can get rid of the top bit
- * implicitly by making the multiplier even, therefore saving on a runtime
- * clear-bit instruction. Otherwise caller must remember to clear the top
- * bit explicitly.
- */
-
-/* this is used only to give gcc a clue about good code generation */
-typedef union {
- struct {
-#if defined(__LITTLE_ENDIAN)
- u32 lo, hi;
-#elif defined(__BIG_ENDIAN)
- u32 hi, lo;
-#endif
- };
- u64 val;
-} cnt32_to_63_t;
-
-#define cnt32_to_63(cnt_lo) \
-({ \
- static volatile u32 __m_cnt_hi = 0; \
- cnt32_to_63_t __x; \
- __x.hi = __m_cnt_hi; \
- __x.lo = (cnt_lo); \
- if (unlikely((s32)(__x.hi ^ __x.lo) < 0)) \
- __m_cnt_hi = __x.hi = (__x.hi ^ 0x80000000) + (__x.hi >> 31); \
- __x.val; \
-})
-
-#endif
diff --git a/arch/arm/kernel/kgdb.c b/arch/arm/kernel/kgdb.c
index aaffaecffcd..ba8ccfede96 100644
--- a/arch/arm/kernel/kgdb.c
+++ b/arch/arm/kernel/kgdb.c
@@ -111,8 +111,6 @@ int kgdb_arch_handle_exception(int exception_vector, int signo,
case 'D':
case 'k':
case 'c':
- kgdb_contthread = NULL;
-
/*
* Try to read optional parameter, pc unchanged if no parm.
* If this was a compiled breakpoint, we need to move
diff --git a/arch/arm/mach-pxa/time.c b/arch/arm/mach-pxa/time.c
index 67e18509d7b..b0d6b32654c 100644
--- a/arch/arm/mach-pxa/time.c
+++ b/arch/arm/mach-pxa/time.c
@@ -17,9 +17,9 @@
#include <linux/interrupt.h>
#include <linux/clockchips.h>
#include <linux/sched.h>
+#include <linux/cnt32_to_63.h>
#include <asm/div64.h>
-#include <asm/cnt32_to_63.h>
#include <asm/mach/irq.h>
#include <asm/mach/time.h>
#include <mach/pxa-regs.h>
diff --git a/arch/arm/mach-sa1100/generic.c b/arch/arm/mach-sa1100/generic.c
index 1362994c78a..b422526f6d8 100644
--- a/arch/arm/mach-sa1100/generic.c
+++ b/arch/arm/mach-sa1100/generic.c
@@ -18,9 +18,9 @@
#include <linux/ioport.h>
#include <linux/sched.h> /* just for sched_clock() - funny that */
#include <linux/platform_device.h>
+#include <linux/cnt32_to_63.h>
#include <asm/div64.h>
-#include <asm/cnt32_to_63.h>
#include <mach/hardware.h>
#include <asm/system.h>
#include <asm/pgtable.h>
diff --git a/arch/arm/mach-versatile/core.c b/arch/arm/mach-versatile/core.c
index d75e795c893..b638f10411e 100644
--- a/arch/arm/mach-versatile/core.c
+++ b/arch/arm/mach-versatile/core.c
@@ -28,8 +28,8 @@
#include <linux/amba/clcd.h>
#include <linux/clocksource.h>
#include <linux/clockchips.h>
+#include <linux/cnt32_to_63.h>
-#include <asm/cnt32_to_63.h>
#include <asm/system.h>
#include <mach/hardware.h>
#include <asm/io.h>
diff --git a/arch/m32r/Kconfig b/arch/m32r/Kconfig
index a5f864c445b..f57113f1f89 100644
--- a/arch/m32r/Kconfig
+++ b/arch/m32r/Kconfig
@@ -216,10 +216,6 @@ config MEMORY_SIZE
default "01000000" if PLAT_M32104UT
default "00800000" if PLAT_OAKS32R
-config NOHIGHMEM
- bool
- default y
-
config ARCH_DISCONTIGMEM_ENABLE
bool "Internal RAM Support"
depends on CHIP_M32700 || CHIP_M32102 || CHIP_VDEC2 || CHIP_OPSP || CHIP_M32104
@@ -410,11 +406,7 @@ config PCI_DIRECT
source "drivers/pci/Kconfig"
config ISA
- bool "ISA support"
- help
- Find out whether you have ISA slots on your motherboard. ISA is the
- name of a bus system, i.e. the way the CPU talks to the other stuff
- inside your box. If you have ISA, say Y, otherwise N.
+ bool
source "drivers/pcmcia/Kconfig"
diff --git a/arch/m32r/kernel/entry.S b/arch/m32r/kernel/entry.S
index d4eaa2fd181..612d35b082a 100644
--- a/arch/m32r/kernel/entry.S
+++ b/arch/m32r/kernel/entry.S
@@ -143,7 +143,7 @@ ret_from_intr:
and3 r4, r4, #0x8000 ; check BSM bit
#endif
beqz r4, resume_kernel
-ENTRY(resume_userspace)
+resume_userspace:
DISABLE_INTERRUPTS(r4) ; make sure we don't miss an interrupt
; setting need_resched or sigpending
; between sampling and the iret
diff --git a/arch/m32r/kernel/head.S b/arch/m32r/kernel/head.S
index dab7436d7bb..40180778a5c 100644
--- a/arch/m32r/kernel/head.S
+++ b/arch/m32r/kernel/head.S
@@ -29,7 +29,6 @@ __INITDATA
.global _end
ENTRY(stext)
ENTRY(_stext)
-ENTRY(startup_32)
/* Setup up the stack pointer */
LDIMM (r0, spi_stack_top)
LDIMM (r1, spu_stack_top)
diff --git a/arch/m32r/kernel/irq.c b/arch/m32r/kernel/irq.c
index d0c5b0b7da2..2aeae467009 100644
--- a/arch/m32r/kernel/irq.c
+++ b/arch/m32r/kernel/irq.c
@@ -22,9 +22,6 @@
#include <linux/module.h>
#include <asm/uaccess.h>
-atomic_t irq_err_count;
-atomic_t irq_mis_count;
-
/*
* Generic, controller-independent functions:
*/
@@ -63,9 +60,6 @@ int show_interrupts(struct seq_file *p, void *v)
seq_putc(p, '\n');
skip:
spin_unlock_irqrestore(&irq_desc[i].lock, flags);
- } else if (i == NR_IRQS) {
- seq_printf(p, "ERR: %10u\n", atomic_read(&irq_err_count));
- seq_printf(p, "MIS: %10u\n", atomic_read(&irq_mis_count));
}
return 0;
}
diff --git a/arch/m32r/kernel/m32r_ksyms.c b/arch/m32r/kernel/m32r_ksyms.c
index 16bcb189a38..22624b51d4d 100644
--- a/arch/m32r/kernel/m32r_ksyms.c
+++ b/arch/m32r/kernel/m32r_ksyms.c
@@ -14,6 +14,7 @@
#include <asm/delay.h>
#include <asm/irq.h>
#include <asm/tlbflush.h>
+#include <asm/pgtable.h>
/* platform dependent support */
EXPORT_SYMBOL(boot_cpu_data);
@@ -65,6 +66,7 @@ EXPORT_SYMBOL(memset);
EXPORT_SYMBOL(copy_page);
EXPORT_SYMBOL(clear_page);
EXPORT_SYMBOL(strlen);
+EXPORT_SYMBOL(empty_zero_page);
EXPORT_SYMBOL(_inb);
EXPORT_SYMBOL(_inw);
diff --git a/arch/m32r/kernel/process.c b/arch/m32r/kernel/process.c
index a689e2978b6..5be4faaf5b1 100644
--- a/arch/m32r/kernel/process.c
+++ b/arch/m32r/kernel/process.c
@@ -35,8 +35,6 @@
#include <linux/err.h>
-static int hlt_counter=0;
-
/*
* Return saved PC of a blocked thread.
*/
@@ -48,31 +46,16 @@ unsigned long thread_saved_pc(struct task_struct *tsk)
/*
* Powermanagement idle function, if any..
*/
-void (*pm_idle)(void) = NULL;
-EXPORT_SYMBOL(pm_idle);
+static void (*pm_idle)(void) = NULL;
void (*pm_power_off)(void) = NULL;
EXPORT_SYMBOL(pm_power_off);
-void disable_hlt(void)
-{
- hlt_counter++;
-}
-
-EXPORT_SYMBOL(disable_hlt);
-
-void enable_hlt(void)
-{
- hlt_counter--;
-}
-
-EXPORT_SYMBOL(enable_hlt);
-
/*
* We use this is we don't have any better
* idle routine..
*/
-void default_idle(void)
+static void default_idle(void)
{
/* M32R_FIXME: Please use "cpu_sleep" mode. */
cpu_relax();
@@ -260,15 +243,6 @@ int copy_thread(int nr, unsigned long clone_flags, unsigned long spu,
return 0;
}
-/*
- * Capture the user space registers if the task is not running (in user space)
- */
-int dump_task_regs(struct task_struct *tsk, elf_gregset_t *regs)
-{
- /* M32R_FIXME */
- return 1;
-}
-
asmlinkage int sys_fork(unsigned long r0, unsigned long r1, unsigned long r2,
unsigned long r3, unsigned long r4, unsigned long r5, unsigned long r6,
struct pt_regs regs)
diff --git a/arch/m32r/kernel/smp.c b/arch/m32r/kernel/smp.c
index 7577f971ea4..929e5c9d3ad 100644
--- a/arch/m32r/kernel/smp.c
+++ b/arch/m32r/kernel/smp.c
@@ -84,7 +84,7 @@ void smp_send_timer(void);
void smp_ipi_timer_interrupt(struct pt_regs *);
void smp_local_timer_interrupt(void);
-void send_IPI_allbutself(int, int);
+static void send_IPI_allbutself(int, int);
static void send_IPI_mask(cpumask_t, int, int);
unsigned long send_IPI_mask_phys(cpumask_t, int, int);
@@ -722,7 +722,7 @@ void smp_local_timer_interrupt(void)
* ---------- --- --------------------------------------------------------
*
*==========================================================================*/
-void send_IPI_allbutself(int ipi_num, int try)
+static void send_IPI_allbutself(int ipi_num, int try)
{
cpumask_t cpumask;
diff --git a/arch/m32r/kernel/time.c b/arch/m32r/kernel/time.c
index 994cc155635..6ea017727cc 100644
--- a/arch/m32r/kernel/time.c
+++ b/arch/m32r/kernel/time.c
@@ -34,7 +34,6 @@
#include <asm/hw_irq.h>
#ifdef CONFIG_SMP
-extern void send_IPI_allbutself(int, int);
extern void smp_local_timer_interrupt(void);
#endif
@@ -188,7 +187,7 @@ static long last_rtc_update = 0;
* timer_interrupt() needs to keep up the real-time clock,
* as well as call the "do_timer()" routine every clocktick
*/
-irqreturn_t timer_interrupt(int irq, void *dev_id)
+static irqreturn_t timer_interrupt(int irq, void *dev_id)
{
#ifndef CONFIG_SMP
profile_tick(CPU_PROFILING);
@@ -228,7 +227,7 @@ irqreturn_t timer_interrupt(int irq, void *dev_id)
return IRQ_HANDLED;
}
-struct irqaction irq0 = {
+static struct irqaction irq0 = {
.handler = timer_interrupt,
.flags = IRQF_DISABLED,
.mask = CPU_MASK_NONE,
diff --git a/arch/m32r/kernel/traps.c b/arch/m32r/kernel/traps.c
index 46159a4e644..03b14e55cd8 100644
--- a/arch/m32r/kernel/traps.c
+++ b/arch/m32r/kernel/traps.c
@@ -61,7 +61,7 @@ extern unsigned long eit_vector[];
((unsigned long)func - (unsigned long)eit_vector - entry*4)/4 \
+ 0xff000000UL
-void set_eit_vector_entries(void)
+static void set_eit_vector_entries(void)
{
extern void default_eit_handler(void);
extern void system_call(void);
@@ -121,9 +121,9 @@ void __init trap_init(void)
cpu_init();
}
-int kstack_depth_to_print = 24;
+static int kstack_depth_to_print = 24;
-void show_trace(struct task_struct *task, unsigned long *stack)
+static void show_trace(struct task_struct *task, unsigned long *stack)
{
unsigned long addr;
@@ -224,7 +224,7 @@ bad:
printk("\n");
}
-DEFINE_SPINLOCK(die_lock);
+static DEFINE_SPINLOCK(die_lock);
void die(const char * str, struct pt_regs * regs, long err)
{
diff --git a/arch/m32r/lib/delay.c b/arch/m32r/lib/delay.c
index 59bfc34e0d9..ced549be80f 100644
--- a/arch/m32r/lib/delay.c
+++ b/arch/m32r/lib/delay.c
@@ -6,6 +6,7 @@
*/
#include <linux/param.h>
+#include <linux/module.h>
#ifdef CONFIG_SMP
#include <linux/sched.h>
#include <asm/current.h>
@@ -121,3 +122,4 @@ void __ndelay(unsigned long nsecs)
{
__const_udelay(nsecs * 0x00005); /* 2**32 / 1000000000 (rounded up) */
}
+EXPORT_SYMBOL(__ndelay);
diff --git a/arch/mips/au1000/common/gpio.c b/arch/mips/au1000/common/gpio.c
index b485d94ce8a..e660ddd611c 100644
--- a/arch/mips/au1000/common/gpio.c
+++ b/arch/mips/au1000/common/gpio.c
@@ -48,7 +48,7 @@ static void au1xxx_gpio2_write(unsigned gpio, int value)
{
gpio -= AU1XXX_GPIO_BASE;
- gpio2->output = (GPIO2_OUTPUT_ENABLE_MASK << gpio) | (value << gpio);
+ gpio2->output = (GPIO2_OUTPUT_ENABLE_MASK << gpio) | ((!!value) << gpio);
}
static int au1xxx_gpio2_direction_input(unsigned gpio)
@@ -61,7 +61,8 @@ static int au1xxx_gpio2_direction_input(unsigned gpio)
static int au1xxx_gpio2_direction_output(unsigned gpio, int value)
{
gpio -= AU1XXX_GPIO_BASE;
- gpio2->dir = (0x01 << gpio) | (value << gpio);
+ gpio2->dir |= 0x01 << gpio;
+ gpio2->output = (GPIO2_OUTPUT_ENABLE_MASK << gpio) | ((!!value) << gpio);
return 0;
}
@@ -90,6 +91,7 @@ static int au1xxx_gpio1_direction_input(unsigned gpio)
static int au1xxx_gpio1_direction_output(unsigned gpio, int value)
{
gpio1->trioutclr = (0x01 & gpio);
+ au1xxx_gpio1_write(gpio, value);
return 0;
}
diff --git a/arch/mips/kernel/kgdb.c b/arch/mips/kernel/kgdb.c
index 8f6d58ede33..6e152c80cd4 100644
--- a/arch/mips/kernel/kgdb.c
+++ b/arch/mips/kernel/kgdb.c
@@ -236,8 +236,7 @@ int kgdb_arch_handle_exception(int vector, int signo, int err_code,
atomic_set(&kgdb_cpu_doing_single_step, -1);
if (remcom_in_buffer[0] == 's')
- if (kgdb_contthread)
- atomic_set(&kgdb_cpu_doing_single_step, cpu);
+ atomic_set(&kgdb_cpu_doing_single_step, cpu);
return 0;
}
diff --git a/arch/mips/pci/Makefile b/arch/mips/pci/Makefile
index 15e01aec37f..c8c32f417b6 100644
--- a/arch/mips/pci/Makefile
+++ b/arch/mips/pci/Makefile
@@ -15,6 +15,7 @@ obj-$(CONFIG_SOC_TX3927) += ops-tx3927.o
obj-$(CONFIG_PCI_VR41XX) += ops-vr41xx.o pci-vr41xx.o
obj-$(CONFIG_MARKEINS) += ops-emma2rh.o pci-emma2rh.o fixup-emma2rh.o
obj-$(CONFIG_PCI_TX4927) += ops-tx4927.o
+obj-$(CONFIG_BCM47XX) += pci-bcm47xx.o
#
# These are still pretty much in the old state, watch, go blind.
diff --git a/arch/mips/pci/pci-bcm47xx.c b/arch/mips/pci/pci-bcm47xx.c
new file mode 100644
index 00000000000..bea9b6cdfdb
--- /dev/null
+++ b/arch/mips/pci/pci-bcm47xx.c
@@ -0,0 +1,60 @@
+/*
+ * Copyright (C) 2008 Aurelien Jarno <aurelien@aurel32.net>
+ *
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License as published by the
+ * Free Software Foundation; either version 2 of the License, or (at your
+ * option) any later version.
+ *
+ * THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESS OR IMPLIED
+ * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
+ * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN
+ * NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
+ * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
+ * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF
+ * USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON
+ * ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
+ * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ *
+ * You should have received a copy of the GNU General Public License along
+ * with this program; if not, write to the Free Software Foundation, Inc.,
+ * 675 Mass Ave, Cambridge, MA 02139, USA.
+ */
+
+#include <linux/types.h>
+#include <linux/pci.h>
+#include <linux/ssb/ssb.h>
+
+int __init pcibios_map_irq(const struct pci_dev *dev, u8 slot, u8 pin)
+{
+ return 0;
+}
+
+int pcibios_plat_dev_init(struct pci_dev *dev)
+{
+ int res;
+ u8 slot, pin;
+
+ res = ssb_pcibios_plat_dev_init(dev);
+ if (res < 0) {
+ printk(KERN_ALERT "PCI: Failed to init device %s\n",
+ pci_name(dev));
+ return res;
+ }
+
+ pci_read_config_byte(dev, PCI_INTERRUPT_PIN, &pin);
+ slot = PCI_SLOT(dev->devfn);
+ res = ssb_pcibios_map_irq(dev, slot, pin);
+
+ /* IRQ-0 and IRQ-1 are software interrupts. */
+ if (res < 2) {
+ printk(KERN_ALERT "PCI: Failed to map IRQ of device %s\n",
+ pci_name(dev));
+ return res;
+ }
+
+ dev->irq = res;
+ return 0;
+}
+
diff --git a/arch/mips/pci/pci-ip27.c b/arch/mips/pci/pci-ip27.c
index bd78368c82b..f97ab146101 100644
--- a/arch/mips/pci/pci-ip27.c
+++ b/arch/mips/pci/pci-ip27.c
@@ -143,25 +143,47 @@ int __cpuinit bridge_probe(nasid_t nasid, int widget_id, int masterwid)
*/
int __devinit pcibios_map_irq(const struct pci_dev *dev, u8 slot, u8 pin)
{
+ return 0;
+}
+
+/* Most MIPS systems have straight-forward swizzling needs. */
+static inline u8 bridge_swizzle(u8 pin, u8 slot)
+{
+ return (((pin - 1) + slot) % 4) + 1;
+}
+
+static inline struct pci_dev *bridge_root_dev(struct pci_dev *dev)
+{
+ while (dev->bus->parent) {
+ /* Move up the chain of bridges. */
+ dev = dev->bus->self;
+ }
+
+ return dev;
+}
+
+/* Do platform specific device initialization at pci_enable_device() time */
+int pcibios_plat_dev_init(struct pci_dev *dev)
+{
struct bridge_controller *bc = BRIDGE_CONTROLLER(dev->bus);
- int irq = bc->pci_int[slot];
+ struct pci_dev *rdev = bridge_root_dev(dev);
+ int slot = PCI_SLOT(rdev->devfn);
+ int irq;
+ irq = bc->pci_int[slot];
if (irq == -1) {
- irq = bc->pci_int[slot] = request_bridge_irq(bc);
+ irq = request_bridge_irq(bc);
if (irq < 0)
- panic("Can't allocate interrupt for PCI device %s\n",
- pci_name(dev));
+ return irq;
+
+ bc->pci_int[slot] = irq;
}
irq_to_bridge[irq] = bc;
irq_to_slot[irq] = slot;
- return irq;
-}
+ dev->irq = irq;
-/* Do platform specific device initialization at pci_enable_device() time */
-int pcibios_plat_dev_init(struct pci_dev *dev)
-{
return 0;
}
diff --git a/arch/mn10300/kernel/time.c b/arch/mn10300/kernel/time.c
index babb7c2ac37..e4606586f94 100644
--- a/arch/mn10300/kernel/time.c
+++ b/arch/mn10300/kernel/time.c
@@ -1,6 +1,6 @@
/* MN10300 Low level time management
*
- * Copyright (C) 2007 Red Hat, Inc. All Rights Reserved.
+ * Copyright (C) 2007-2008 Red Hat, Inc. All Rights Reserved.
* Written by David Howells (dhowells@redhat.com)
* - Derived from arch/i386/kernel/time.c
*
@@ -16,6 +16,7 @@
#include <linux/init.h>
#include <linux/smp.h>
#include <linux/profile.h>
+#include <linux/cnt32_to_63.h>
#include <asm/irq.h>
#include <asm/div64.h>
#include <asm/processor.h>
@@ -40,27 +41,54 @@ static struct irqaction timer_irq = {
.name = "timer",
};
+static unsigned long sched_clock_multiplier;
+
/*
* scheduler clock - returns current time in nanosec units.
*/
unsigned long long sched_clock(void)
{
union {
- unsigned long long l;
- u32 w[2];
- } quot;
+ unsigned long long ll;
+ unsigned l[2];
+ } tsc64, result;
+ unsigned long tsc, tmp;
+ unsigned product[3]; /* 96-bit intermediate value */
+
+ /* read the TSC value
+ */
+ tsc = 0 - get_cycles(); /* get_cycles() counts down */
- quot.w[0] = mn10300_last_tsc - get_cycles();
- quot.w[1] = 1000000000;
+ /* expand to 64-bits.
+ * - sched_clock() must be called once a minute or better or the
+ * following will go horribly wrong - see cnt32_to_63()
+ */
+ tsc64.ll = cnt32_to_63(tsc) & 0x7fffffffffffffffULL;
- asm("mulu %2,%3,%0,%1"
- : "=r"(quot.w[1]), "=r"(quot.w[0])
- : "0"(quot.w[1]), "1"(quot.w[0])
+ /* scale the 64-bit TSC value to a nanosecond value via a 96-bit
+ * intermediate
+ */
+ asm("mulu %2,%0,%3,%0 \n" /* LSW * mult -> 0:%3:%0 */
+ "mulu %2,%1,%2,%1 \n" /* MSW * mult -> %2:%1:0 */
+ "add %3,%1 \n"
+ "addc 0,%2 \n" /* result in %2:%1:%0 */
+ : "=r"(product[0]), "=r"(product[1]), "=r"(product[2]), "=r"(tmp)
+ : "0"(tsc64.l[0]), "1"(tsc64.l[1]), "2"(sched_clock_multiplier)
: "cc");
- do_div(quot.l, MN10300_TSCCLK);
+ result.l[0] = product[1] << 16 | product[0] >> 16;
+ result.l[1] = product[2] << 16 | product[1] >> 16;
- return quot.l;
+ return result.ll;
+}
+
+/*
+ * initialise the scheduler clock
+ */
+static void __init mn10300_sched_clock_init(void)
+{
+ sched_clock_multiplier =
+ __muldiv64u(NSEC_PER_SEC, 1 << 16, MN10300_TSCCLK);
}
/*
@@ -128,4 +156,6 @@ void __init time_init(void)
/* start the watchdog timer */
watchdog_go();
#endif
+
+ mn10300_sched_clock_init();
}
diff --git a/arch/powerpc/kernel/kgdb.c b/arch/powerpc/kernel/kgdb.c
index b4fdf2f2743..fe8f71dd0b3 100644
--- a/arch/powerpc/kernel/kgdb.c
+++ b/arch/powerpc/kernel/kgdb.c
@@ -347,9 +347,8 @@ int kgdb_arch_handle_exception(int vector, int signo, int err_code,
linux_regs->msr |= MSR_SE;
#endif
kgdb_single_step = 1;
- if (kgdb_contthread)
- atomic_set(&kgdb_cpu_doing_single_step,
- raw_smp_processor_id());
+ atomic_set(&kgdb_cpu_doing_single_step,
+ raw_smp_processor_id());
}
return 0;
}
diff --git a/arch/x86/kernel/kgdb.c b/arch/x86/kernel/kgdb.c
index f47f0eb886b..8282a213968 100644
--- a/arch/x86/kernel/kgdb.c
+++ b/arch/x86/kernel/kgdb.c
@@ -69,6 +69,9 @@ static int gdb_x86vector = -1;
*/
void pt_regs_to_gdb_regs(unsigned long *gdb_regs, struct pt_regs *regs)
{
+#ifndef CONFIG_X86_32
+ u32 *gdb_regs32 = (u32 *)gdb_regs;
+#endif
gdb_regs[GDB_AX] = regs->ax;
gdb_regs[GDB_BX] = regs->bx;
gdb_regs[GDB_CX] = regs->cx;
@@ -76,9 +79,9 @@ void pt_regs_to_gdb_regs(unsigned long *gdb_regs, struct pt_regs *regs)
gdb_regs[GDB_SI] = regs->si;
gdb_regs[GDB_DI] = regs->di;
gdb_regs[GDB_BP] = regs->bp;
- gdb_regs[GDB_PS] = regs->flags;
gdb_regs[GDB_PC] = regs->ip;
#ifdef CONFIG_X86_32
+ gdb_regs[GDB_PS] = regs->flags;
gdb_regs[GDB_DS] = regs->ds;
gdb_regs[GDB_ES] = regs->es;
gdb_regs[GDB_CS] = regs->cs;
@@ -94,6 +97,9 @@ void pt_regs_to_gdb_regs(unsigned long *gdb_regs, struct pt_regs *regs)
gdb_regs[GDB_R13] = regs->r13;
gdb_regs[GDB_R14] = regs->r14;
gdb_regs[GDB_R15] = regs->r15;
+ gdb_regs32[GDB_PS] = regs->flags;
+ gdb_regs32[GDB_CS] = regs->cs;
+ gdb_regs32[GDB_SS] = regs->ss;
#endif
gdb_regs[GDB_SP] = regs->sp;
}
@@ -112,6 +118,9 @@ void pt_regs_to_gdb_regs(unsigned long *gdb_regs, struct pt_regs *regs)
*/
void sleeping_thread_to_gdb_regs(unsigned long *gdb_regs, struct task_struct *p)
{
+#ifndef CONFIG_X86_32
+ u32 *gdb_regs32 = (u32 *)gdb_regs;
+#endif
gdb_regs[GDB_AX] = 0;
gdb_regs[GDB_BX] = 0;
gdb_regs[GDB_CX] = 0;
@@ -129,8 +138,10 @@ void sleeping_thread_to_gdb_regs(unsigned long *gdb_regs, struct task_struct *p)
gdb_regs[GDB_FS] = 0xFFFF;
gdb_regs[GDB_GS] = 0xFFFF;
#else
- gdb_regs[GDB_PS] = *(unsigned long *)(p->thread.sp + 8);
- gdb_regs[GDB_PC] = 0;
+ gdb_regs32[GDB_PS] = *(unsigned long *)(p->thread.sp + 8);
+ gdb_regs32[GDB_CS] = __KERNEL_CS;
+ gdb_regs32[GDB_SS] = __KERNEL_DS;
+ gdb_regs[GDB_PC] = p->thread.ip;
gdb_regs[GDB_R8] = 0;
gdb_regs[GDB_R9] = 0;
gdb_regs[GDB_R10] = 0;
@@ -153,6 +164,9 @@ void sleeping_thread_to_gdb_regs(unsigned long *gdb_regs, struct task_struct *p)
*/
void gdb_regs_to_pt_regs(unsigned long *gdb_regs, struct pt_regs *regs)
{
+#ifndef CONFIG_X86_32
+ u32 *gdb_regs32 = (u32 *)gdb_regs;
+#endif
regs->ax = gdb_regs[GDB_AX];
regs->bx = gdb_regs[GDB_BX];
regs->cx = gdb_regs[GDB_CX];
@@ -160,9 +174,9 @@ void gdb_regs_to_pt_regs(unsigned long *gdb_regs, struct pt_regs *regs)
regs->si = gdb_regs[GDB_SI];
regs->di = gdb_regs[GDB_DI];
regs->bp = gdb_regs[GDB_BP];
- regs->flags = gdb_regs[GDB_PS];
regs->ip = gdb_regs[GDB_PC];
#ifdef CONFIG_X86_32
+ regs->flags = gdb_regs[GDB_PS];
regs->ds = gdb_regs[GDB_DS];
regs->es = gdb_regs[GDB_ES];
regs->cs = gdb_regs[GDB_CS];
@@ -175,6 +189,9 @@ void gdb_regs_to_pt_regs(unsigned long *gdb_regs, struct pt_regs *regs)
regs->r13 = gdb_regs[GDB_R13];
regs->r14 = gdb_regs[GDB_R14];
regs->r15 = gdb_regs[GDB_R15];
+ regs->flags = gdb_regs32[GDB_PS];
+ regs->cs = gdb_regs32[GDB_CS];
+ regs->ss = gdb_regs32[GDB_SS];
#endif
}
@@ -378,10 +395,8 @@ int kgdb_arch_handle_exception(int e_vector, int signo, int err_code,
if (remcomInBuffer[0] == 's') {
linux_regs->flags |= X86_EFLAGS_TF;
kgdb_single_step = 1;
- if (kgdb_contthread) {
- atomic_set(&kgdb_cpu_doing_single_step,
- raw_smp_processor_id());
- }
+ atomic_set(&kgdb_cpu_doing_single_step,
+ raw_smp_processor_id());
}
get_debugreg(dr6, 6);
@@ -466,9 +481,15 @@ static int __kgdb_notify(struct die_args *args, unsigned long cmd)
case DIE_DEBUG:
if (atomic_read(&kgdb_cpu_doing_single_step) ==
- raw_smp_processor_id() &&
- user_mode(regs))
- return single_step_cont(regs, args);
+ raw_smp_processor_id()) {
+ if (user_mode(regs))
+ return single_step_cont(regs, args);
+ break;
+ } else if (test_thread_flag(TIF_SINGLESTEP))
+ /* This means a user thread is single stepping
+ * a system call which should be ignored
+ */
+ return NOTIFY_DONE;
/* fall through */
default:
if (user_mode(regs))
diff --git a/arch/x86/kernel/process_32.c b/arch/x86/kernel/process_32.c
index 4b3cfdf5421..31f40b24bf5 100644
--- a/arch/x86/kernel/process_32.c
+++ b/arch/x86/kernel/process_32.c
@@ -55,6 +55,7 @@
#include <asm/tlbflush.h>
#include <asm/cpu.h>
#include <asm/kdebug.h>
+#include <asm/idle.h>
asmlinkage void ret_from_fork(void) __asm__("ret_from_fork");
generated by cgit v1.2.3 (git 2.25.1) at 2024-06-19 05:25:24 +0000