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-rw-r--r--arch/arm/Kconfig4
-rw-r--r--arch/arm/boot/compressed/Makefile6
-rw-r--r--arch/arm/common/dmabounce.c22
-rw-r--r--arch/arm/common/locomo.c2
-rw-r--r--arch/arm/common/sa1111.c10
-rw-r--r--arch/arm/common/scoop.c2
-rw-r--r--arch/arm/kernel/Makefile6
-rw-r--r--arch/arm/kernel/armksyms.c5
-rw-r--r--arch/arm/kernel/ecard.c5
-rw-r--r--arch/arm/kernel/entry-common.S51
-rw-r--r--arch/arm/kernel/ftrace.c116
-rw-r--r--arch/arm/kernel/kgdb.c201
-rw-r--r--arch/arm/kernel/kprobes.c2
-rw-r--r--arch/arm/kernel/setup.c2
-rw-r--r--arch/arm/kernel/smp.c163
-rw-r--r--arch/arm/kernel/stacktrace.c1
-rw-r--r--arch/arm/kernel/time.c4
-rw-r--r--arch/arm/kernel/traps.c5
-rw-r--r--arch/arm/mach-integrator/impd1.c7
-rw-r--r--arch/arm/mach-integrator/lm.c6
-rw-r--r--arch/arm/oprofile/op_model_mpcore.c2
-rw-r--r--arch/arm/plat-omap/mailbox.c2
-rw-r--r--arch/arm/vfp/vfpmodule.c2
23 files changed, 446 insertions, 180 deletions
diff --git a/arch/arm/Kconfig b/arch/arm/Kconfig
index e57226e3afe..d048f6887d0 100644
--- a/arch/arm/Kconfig
+++ b/arch/arm/Kconfig
@@ -12,8 +12,11 @@ config ARM
select RTC_LIB
select SYS_SUPPORTS_APM_EMULATION
select HAVE_OPROFILE
+ select HAVE_ARCH_KGDB
select HAVE_KPROBES if (!XIP_KERNEL)
select HAVE_KRETPROBES if (HAVE_KPROBES)
+ select HAVE_FTRACE if (!XIP_KERNEL)
+ select HAVE_DYNAMIC_FTRACE if (HAVE_FTRACE)
help
The ARM series is a line of low-power-consumption RISC chip designs
licensed by ARM Ltd and targeted at embedded applications and
@@ -699,6 +702,7 @@ source "kernel/time/Kconfig"
config SMP
bool "Symmetric Multi-Processing (EXPERIMENTAL)"
depends on EXPERIMENTAL && (REALVIEW_EB_ARM11MP || MACH_REALVIEW_PB11MP)
+ select USE_GENERIC_SMP_HELPERS
help
This enables support for systems with more than one CPU. If you have
a system with only one CPU, like most personal computers, say N. If
diff --git a/arch/arm/boot/compressed/Makefile b/arch/arm/boot/compressed/Makefile
index de9d9ee5095..95baac4939e 100644
--- a/arch/arm/boot/compressed/Makefile
+++ b/arch/arm/boot/compressed/Makefile
@@ -69,6 +69,12 @@ SEDFLAGS = s/TEXT_START/$(ZTEXTADDR)/;s/BSS_START/$(ZBSSADDR)/
targets := vmlinux vmlinux.lds piggy.gz piggy.o font.o font.c \
head.o misc.o $(OBJS)
+
+ifeq ($(CONFIG_FTRACE),y)
+ORIG_CFLAGS := $(KBUILD_CFLAGS)
+KBUILD_CFLAGS = $(subst -pg, , $(ORIG_CFLAGS))
+endif
+
EXTRA_CFLAGS := -fpic -fno-builtin
EXTRA_AFLAGS :=
diff --git a/arch/arm/common/dmabounce.c b/arch/arm/common/dmabounce.c
index 2744673314b..dd294734260 100644
--- a/arch/arm/common/dmabounce.c
+++ b/arch/arm/common/dmabounce.c
@@ -554,9 +554,8 @@ dmabounce_register_dev(struct device *dev, unsigned long small_buffer_size,
device_info = kmalloc(sizeof(struct dmabounce_device_info), GFP_ATOMIC);
if (!device_info) {
- printk(KERN_ERR
- "Could not allocated dmabounce_device_info for %s",
- dev->bus_id);
+ dev_err(dev,
+ "Could not allocated dmabounce_device_info\n");
return -ENOMEM;
}
@@ -594,8 +593,7 @@ dmabounce_register_dev(struct device *dev, unsigned long small_buffer_size,
dev->archdata.dmabounce = device_info;
- printk(KERN_INFO "dmabounce: registered device %s on %s bus\n",
- dev->bus_id, dev->bus->name);
+ dev_info(dev, "dmabounce: registered device\n");
return 0;
@@ -614,16 +612,15 @@ dmabounce_unregister_dev(struct device *dev)
dev->archdata.dmabounce = NULL;
if (!device_info) {
- printk(KERN_WARNING
- "%s: Never registered with dmabounce but attempting" \
- "to unregister!\n", dev->bus_id);
+ dev_warn(dev,
+ "Never registered with dmabounce but attempting"
+ "to unregister!\n");
return;
}
if (!list_empty(&device_info->safe_buffers)) {
- printk(KERN_ERR
- "%s: Removing from dmabounce with pending buffers!\n",
- dev->bus_id);
+ dev_err(dev,
+ "Removing from dmabounce with pending buffers!\n");
BUG();
}
@@ -639,8 +636,7 @@ dmabounce_unregister_dev(struct device *dev)
kfree(device_info);
- printk(KERN_INFO "dmabounce: device %s on %s bus unregistered\n",
- dev->bus_id, dev->bus->name);
+ dev_info(dev, "dmabounce: device unregistered\n");
}
diff --git a/arch/arm/common/locomo.c b/arch/arm/common/locomo.c
index d973c986f72..c3c3a333904 100644
--- a/arch/arm/common/locomo.c
+++ b/arch/arm/common/locomo.c
@@ -543,7 +543,6 @@ locomo_init_one_child(struct locomo *lchip, struct locomo_dev_info *info)
goto out;
}
- strncpy(dev->dev.bus_id, info->name, sizeof(dev->dev.bus_id));
/*
* If the parent device has a DMA mask associated with it,
* propagate it down to the children.
@@ -553,6 +552,7 @@ locomo_init_one_child(struct locomo *lchip, struct locomo_dev_info *info)
dev->dev.dma_mask = &dev->dma_mask;
}
+ dev_set_name(&dev->dev, "%s", info->name);
dev->devid = info->devid;
dev->dev.parent = lchip->dev;
dev->dev.bus = &locomo_bus_type;
diff --git a/arch/arm/common/sa1111.c b/arch/arm/common/sa1111.c
index 79fa71d990b..0a8e1ff2af8 100644
--- a/arch/arm/common/sa1111.c
+++ b/arch/arm/common/sa1111.c
@@ -550,9 +550,7 @@ sa1111_init_one_child(struct sa1111 *sachip, struct resource *parent,
goto out;
}
- snprintf(dev->dev.bus_id, sizeof(dev->dev.bus_id),
- "%4.4lx", info->offset);
-
+ dev_set_name(&dev->dev, "%4.4lx", info->offset);
dev->devid = info->devid;
dev->dev.parent = sachip->dev;
dev->dev.bus = &sa1111_bus_type;
@@ -560,7 +558,7 @@ sa1111_init_one_child(struct sa1111 *sachip, struct resource *parent,
dev->dev.coherent_dma_mask = sachip->dev->coherent_dma_mask;
dev->res.start = sachip->phys + info->offset;
dev->res.end = dev->res.start + 511;
- dev->res.name = dev->dev.bus_id;
+ dev->res.name = dev_name(&dev->dev);
dev->res.flags = IORESOURCE_MEM;
dev->mapbase = sachip->base + info->offset;
dev->skpcr_mask = info->skpcr_mask;
@@ -570,6 +568,7 @@ sa1111_init_one_child(struct sa1111 *sachip, struct resource *parent,
if (ret) {
printk("SA1111: failed to allocate resource for %s\n",
dev->res.name);
+ dev_set_name(&dev->dev, NULL);
kfree(dev);
goto out;
}
@@ -593,7 +592,8 @@ sa1111_init_one_child(struct sa1111 *sachip, struct resource *parent,
if (dev->dma_mask != 0xffffffffUL) {
ret = dmabounce_register_dev(&dev->dev, 1024, 4096);
if (ret) {
- printk("SA1111: Failed to register %s with dmabounce", dev->dev.bus_id);
+ dev_err(&dev->dev, "SA1111: Failed to register"
+ " with dmabounce\n");
device_unregister(&dev->dev);
}
}
diff --git a/arch/arm/common/scoop.c b/arch/arm/common/scoop.c
index bc299b07a6f..ae39553589d 100644
--- a/arch/arm/common/scoop.c
+++ b/arch/arm/common/scoop.c
@@ -247,7 +247,7 @@ static int __devinit scoop_probe(struct platform_device *pdev)
devptr->gpio.base = -1;
if (inf->gpio_base != 0) {
- devptr->gpio.label = pdev->dev.bus_id;
+ devptr->gpio.label = dev_name(&pdev->dev);
devptr->gpio.base = inf->gpio_base;
devptr->gpio.ngpio = 12; /* PA11 = 0, PA12 = 1, etc. up to PA22 = 11 */
devptr->gpio.set = scoop_gpio_set;
diff --git a/arch/arm/kernel/Makefile b/arch/arm/kernel/Makefile
index ad455ff5aeb..1d296fc8494 100644
--- a/arch/arm/kernel/Makefile
+++ b/arch/arm/kernel/Makefile
@@ -4,6 +4,10 @@
AFLAGS_head.o := -DTEXT_OFFSET=$(TEXT_OFFSET)
+ifdef CONFIG_DYNAMIC_FTRACE
+CFLAGS_REMOVE_ftrace.o = -pg
+endif
+
# Object file lists.
obj-y := compat.o entry-armv.o entry-common.o irq.o \
@@ -18,11 +22,13 @@ obj-$(CONFIG_ARTHUR) += arthur.o
obj-$(CONFIG_ISA_DMA) += dma-isa.o
obj-$(CONFIG_PCI) += bios32.o isa.o
obj-$(CONFIG_SMP) += smp.o
+obj-$(CONFIG_DYNAMIC_FTRACE) += ftrace.o
obj-$(CONFIG_KEXEC) += machine_kexec.o relocate_kernel.o
obj-$(CONFIG_KPROBES) += kprobes.o kprobes-decode.o
obj-$(CONFIG_ATAGS_PROC) += atags.o
obj-$(CONFIG_OABI_COMPAT) += sys_oabi-compat.o
obj-$(CONFIG_ARM_THUMBEE) += thumbee.o
+obj-$(CONFIG_KGDB) += kgdb.o
obj-$(CONFIG_CRUNCH) += crunch.o crunch-bits.o
AFLAGS_crunch-bits.o := -Wa,-mcpu=ep9312
diff --git a/arch/arm/kernel/armksyms.c b/arch/arm/kernel/armksyms.c
index 688b7b1ee41..cc7b246e965 100644
--- a/arch/arm/kernel/armksyms.c
+++ b/arch/arm/kernel/armksyms.c
@@ -18,6 +18,7 @@
#include <asm/io.h>
#include <asm/system.h>
#include <asm/uaccess.h>
+#include <asm/ftrace.h>
/*
* libgcc functions - functions that are used internally by the
@@ -181,3 +182,7 @@ EXPORT_SYMBOL(_find_next_bit_be);
#endif
EXPORT_SYMBOL(copy_page);
+
+#ifdef CONFIG_FTRACE
+EXPORT_SYMBOL(mcount);
+#endif
diff --git a/arch/arm/kernel/ecard.c b/arch/arm/kernel/ecard.c
index 8bfd299bfe7..f5cfdabcb87 100644
--- a/arch/arm/kernel/ecard.c
+++ b/arch/arm/kernel/ecard.c
@@ -783,7 +783,7 @@ static void ecard_proc_init(void)
#define ec_set_resource(ec,nr,st,sz) \
do { \
- (ec)->resource[nr].name = ec->dev.bus_id; \
+ (ec)->resource[nr].name = dev_name(&ec->dev); \
(ec)->resource[nr].start = st; \
(ec)->resource[nr].end = (st) + (sz) - 1; \
(ec)->resource[nr].flags = IORESOURCE_MEM; \
@@ -853,8 +853,7 @@ static struct expansion_card *__init ecard_alloc_card(int type, int slot)
for (i = 0; i < ECARD_NUM_RESOURCES; i++) {
if (ec->resource[i].flags &&
request_resource(&iomem_resource, &ec->resource[i])) {
- printk(KERN_ERR "%s: resource(s) not available\n",
- ec->dev.bus_id);
+ dev_err(&ec->dev, "resource(s) not available\n");
ec->resource[i].end -= ec->resource[i].start;
ec->resource[i].start = 0;
ec->resource[i].flags = 0;
diff --git a/arch/arm/kernel/entry-common.S b/arch/arm/kernel/entry-common.S
index 597ed00a08d..84694e88b42 100644
--- a/arch/arm/kernel/entry-common.S
+++ b/arch/arm/kernel/entry-common.S
@@ -9,6 +9,7 @@
*/
#include <asm/unistd.h>
+#include <asm/ftrace.h>
#include <asm/arch/entry-macro.S>
#include "entry-header.S"
@@ -99,6 +100,56 @@ ENTRY(ret_from_fork)
#undef CALL
#define CALL(x) .long x
+#ifdef CONFIG_FTRACE
+#ifdef CONFIG_DYNAMIC_FTRACE
+ENTRY(mcount)
+ stmdb sp!, {r0-r3, lr}
+ mov r0, lr
+ sub r0, r0, #MCOUNT_INSN_SIZE
+
+ .globl mcount_call
+mcount_call:
+ bl ftrace_stub
+ ldmia sp!, {r0-r3, pc}
+
+ENTRY(ftrace_caller)
+ stmdb sp!, {r0-r3, lr}
+ ldr r1, [fp, #-4]
+ mov r0, lr
+ sub r0, r0, #MCOUNT_INSN_SIZE
+
+ .globl ftrace_call
+ftrace_call:
+ bl ftrace_stub
+ ldmia sp!, {r0-r3, pc}
+
+#else
+
+ENTRY(mcount)
+ stmdb sp!, {r0-r3, lr}
+ ldr r0, =ftrace_trace_function
+ ldr r2, [r0]
+ adr r0, ftrace_stub
+ cmp r0, r2
+ bne trace
+ ldmia sp!, {r0-r3, pc}
+
+trace:
+ ldr r1, [fp, #-4]
+ mov r0, lr
+ sub r0, r0, #MCOUNT_INSN_SIZE
+ mov lr, pc
+ mov pc, r2
+ ldmia sp!, {r0-r3, pc}
+
+#endif /* CONFIG_DYNAMIC_FTRACE */
+
+ .globl ftrace_stub
+ftrace_stub:
+ mov pc, lr
+
+#endif /* CONFIG_FTRACE */
+
/*=============================================================================
* SWI handler
*-----------------------------------------------------------------------------
diff --git a/arch/arm/kernel/ftrace.c b/arch/arm/kernel/ftrace.c
new file mode 100644
index 00000000000..76d50e6091b
--- /dev/null
+++ b/arch/arm/kernel/ftrace.c
@@ -0,0 +1,116 @@
+/*
+ * Dynamic function tracing support.
+ *
+ * Copyright (C) 2008 Abhishek Sagar <sagar.abhishek@gmail.com>
+ *
+ * For licencing details, see COPYING.
+ *
+ * Defines low-level handling of mcount calls when the kernel
+ * is compiled with the -pg flag. When using dynamic ftrace, the
+ * mcount call-sites get patched lazily with NOP till they are
+ * enabled. All code mutation routines here take effect atomically.
+ */
+
+#include <linux/ftrace.h>
+
+#include <asm/cacheflush.h>
+#include <asm/ftrace.h>
+
+#define PC_OFFSET 8
+#define BL_OPCODE 0xeb000000
+#define BL_OFFSET_MASK 0x00ffffff
+
+static unsigned long bl_insn;
+static const unsigned long NOP = 0xe1a00000; /* mov r0, r0 */
+
+unsigned char *ftrace_nop_replace(void)
+{
+ return (char *)&NOP;
+}
+
+/* construct a branch (BL) instruction to addr */
+unsigned char *ftrace_call_replace(unsigned long pc, unsigned long addr)
+{
+ long offset;
+
+ offset = (long)addr - (long)(pc + PC_OFFSET);
+ if (unlikely(offset < -33554432 || offset > 33554428)) {
+ /* Can't generate branches that far (from ARM ARM). Ftrace
+ * doesn't generate branches outside of kernel text.
+ */
+ WARN_ON_ONCE(1);
+ return NULL;
+ }
+ offset = (offset >> 2) & BL_OFFSET_MASK;
+ bl_insn = BL_OPCODE | offset;
+ return (unsigned char *)&bl_insn;
+}
+
+int ftrace_modify_code(unsigned long pc, unsigned char *old_code,
+ unsigned char *new_code)
+{
+ unsigned long err = 0, replaced = 0, old, new;
+
+ old = *(unsigned long *)old_code;
+ new = *(unsigned long *)new_code;
+
+ __asm__ __volatile__ (
+ "1: ldr %1, [%2] \n"
+ " cmp %1, %4 \n"
+ "2: streq %3, [%2] \n"
+ " cmpne %1, %3 \n"
+ " movne %0, #2 \n"
+ "3:\n"
+
+ ".section .fixup, \"ax\"\n"
+ "4: mov %0, #1 \n"
+ " b 3b \n"
+ ".previous\n"
+
+ ".section __ex_table, \"a\"\n"
+ " .long 1b, 4b \n"
+ " .long 2b, 4b \n"
+ ".previous\n"
+
+ : "=r"(err), "=r"(replaced)
+ : "r"(pc), "r"(new), "r"(old), "0"(err), "1"(replaced)
+ : "memory");
+
+ if (!err && (replaced == old))
+ flush_icache_range(pc, pc + MCOUNT_INSN_SIZE);
+
+ return err;
+}
+
+int ftrace_update_ftrace_func(ftrace_func_t func)
+{
+ int ret;
+ unsigned long pc, old;
+ unsigned char *new;
+
+ pc = (unsigned long)&ftrace_call;
+ memcpy(&old, &ftrace_call, MCOUNT_INSN_SIZE);
+ new = ftrace_call_replace(pc, (unsigned long)func);
+ ret = ftrace_modify_code(pc, (unsigned char *)&old, new);
+ return ret;
+}
+
+int ftrace_mcount_set(unsigned long *data)
+{
+ unsigned long pc, old;
+ unsigned long *addr = data;
+ unsigned char *new;
+
+ pc = (unsigned long)&mcount_call;
+ memcpy(&old, &mcount_call, MCOUNT_INSN_SIZE);
+ new = ftrace_call_replace(pc, *addr);
+ *addr = ftrace_modify_code(pc, (unsigned char *)&old, new);
+ return 0;
+}
+
+/* run from kstop_machine */
+int __init ftrace_dyn_arch_init(void *data)
+{
+ ftrace_mcount_set(data);
+ return 0;
+}
diff --git a/arch/arm/kernel/kgdb.c b/arch/arm/kernel/kgdb.c
new file mode 100644
index 00000000000..aaffaecffcd
--- /dev/null
+++ b/arch/arm/kernel/kgdb.c
@@ -0,0 +1,201 @@
+/*
+ * arch/arm/kernel/kgdb.c
+ *
+ * ARM KGDB support
+ *
+ * Copyright (c) 2002-2004 MontaVista Software, Inc
+ * Copyright (c) 2008 Wind River Systems, Inc.
+ *
+ * Authors: George Davis <davis_g@mvista.com>
+ * Deepak Saxena <dsaxena@plexity.net>
+ */
+#include <linux/kgdb.h>
+#include <asm/traps.h>
+
+/* Make a local copy of the registers passed into the handler (bletch) */
+void pt_regs_to_gdb_regs(unsigned long *gdb_regs, struct pt_regs *kernel_regs)
+{
+ int regno;
+
+ /* Initialize all to zero. */
+ for (regno = 0; regno < GDB_MAX_REGS; regno++)
+ gdb_regs[regno] = 0;
+
+ gdb_regs[_R0] = kernel_regs->ARM_r0;
+ gdb_regs[_R1] = kernel_regs->ARM_r1;
+ gdb_regs[_R2] = kernel_regs->ARM_r2;
+ gdb_regs[_R3] = kernel_regs->ARM_r3;
+ gdb_regs[_R4] = kernel_regs->ARM_r4;
+ gdb_regs[_R5] = kernel_regs->ARM_r5;
+ gdb_regs[_R6] = kernel_regs->ARM_r6;
+ gdb_regs[_R7] = kernel_regs->ARM_r7;
+ gdb_regs[_R8] = kernel_regs->ARM_r8;
+ gdb_regs[_R9] = kernel_regs->ARM_r9;
+ gdb_regs[_R10] = kernel_regs->ARM_r10;
+ gdb_regs[_FP] = kernel_regs->ARM_fp;
+ gdb_regs[_IP] = kernel_regs->ARM_ip;
+ gdb_regs[_SPT] = kernel_regs->ARM_sp;
+ gdb_regs[_LR] = kernel_regs->ARM_lr;
+ gdb_regs[_PC] = kernel_regs->ARM_pc;
+ gdb_regs[_CPSR] = kernel_regs->ARM_cpsr;
+}
+
+/* Copy local gdb registers back to kgdb regs, for later copy to kernel */
+void gdb_regs_to_pt_regs(unsigned long *gdb_regs, struct pt_regs *kernel_regs)
+{
+ kernel_regs->ARM_r0 = gdb_regs[_R0];
+ kernel_regs->ARM_r1 = gdb_regs[_R1];
+ kernel_regs->ARM_r2 = gdb_regs[_R2];
+ kernel_regs->ARM_r3 = gdb_regs[_R3];
+ kernel_regs->ARM_r4 = gdb_regs[_R4];
+ kernel_regs->ARM_r5 = gdb_regs[_R5];
+ kernel_regs->ARM_r6 = gdb_regs[_R6];
+ kernel_regs->ARM_r7 = gdb_regs[_R7];
+ kernel_regs->ARM_r8 = gdb_regs[_R8];
+ kernel_regs->ARM_r9 = gdb_regs[_R9];
+ kernel_regs->ARM_r10 = gdb_regs[_R10];
+ kernel_regs->ARM_fp = gdb_regs[_FP];
+ kernel_regs->ARM_ip = gdb_regs[_IP];
+ kernel_regs->ARM_sp = gdb_regs[_SPT];
+ kernel_regs->ARM_lr = gdb_regs[_LR];
+ kernel_regs->ARM_pc = gdb_regs[_PC];
+ kernel_regs->ARM_cpsr = gdb_regs[_CPSR];
+}
+
+void
+sleeping_thread_to_gdb_regs(unsigned long *gdb_regs, struct task_struct *task)
+{
+ struct pt_regs *thread_regs;
+ int regno;
+
+ /* Just making sure... */
+ if (task == NULL)
+ return;
+
+ /* Initialize to zero */
+ for (regno = 0; regno < GDB_MAX_REGS; regno++)
+ gdb_regs[regno] = 0;
+
+ /* Otherwise, we have only some registers from switch_to() */
+ thread_regs = task_pt_regs(task);
+ gdb_regs[_R0] = thread_regs->ARM_r0;
+ gdb_regs[_R1] = thread_regs->ARM_r1;
+ gdb_regs[_R2] = thread_regs->ARM_r2;
+ gdb_regs[_R3] = thread_regs->ARM_r3;
+ gdb_regs[_R4] = thread_regs->ARM_r4;
+ gdb_regs[_R5] = thread_regs->ARM_r5;
+ gdb_regs[_R6] = thread_regs->ARM_r6;
+ gdb_regs[_R7] = thread_regs->ARM_r7;
+ gdb_regs[_R8] = thread_regs->ARM_r8;
+ gdb_regs[_R9] = thread_regs->ARM_r9;
+ gdb_regs[_R10] = thread_regs->ARM_r10;
+ gdb_regs[_FP] = thread_regs->ARM_fp;
+ gdb_regs[_IP] = thread_regs->ARM_ip;
+ gdb_regs[_SPT] = thread_regs->ARM_sp;
+ gdb_regs[_LR] = thread_regs->ARM_lr;
+ gdb_regs[_PC] = thread_regs->ARM_pc;
+ gdb_regs[_CPSR] = thread_regs->ARM_cpsr;
+}
+
+static int compiled_break;
+
+int kgdb_arch_handle_exception(int exception_vector, int signo,
+ int err_code, char *remcom_in_buffer,
+ char *remcom_out_buffer,
+ struct pt_regs *linux_regs)
+{
+ unsigned long addr;
+ char *ptr;
+
+ switch (remcom_in_buffer[0]) {
+ 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
+ * to the next instruction or we will just breakpoint
+ * over and over again.
+ */
+ ptr = &remcom_in_buffer[1];
+ if (kgdb_hex2long(&ptr, &addr))
+ linux_regs->ARM_pc = addr;
+ else if (compiled_break == 1)
+ linux_regs->ARM_pc += 4;
+
+ compiled_break = 0;
+
+ return 0;
+ }
+
+ return -1;
+}
+
+static int kgdb_brk_fn(struct pt_regs *regs, unsigned int instr)
+{
+ kgdb_handle_exception(1, SIGTRAP, 0, regs);
+
+ return 0;
+}
+
+static int kgdb_compiled_brk_fn(struct pt_regs *regs, unsigned int instr)
+{
+ compiled_break = 1;
+ kgdb_handle_exception(1, SIGTRAP, 0, regs);
+
+ return 0;
+}
+
+static struct undef_hook kgdb_brkpt_hook = {
+ .instr_mask = 0xffffffff,
+ .instr_val = KGDB_BREAKINST,
+ .fn = kgdb_brk_fn
+};
+
+static struct undef_hook kgdb_compiled_brkpt_hook = {
+ .instr_mask = 0xffffffff,
+ .instr_val = KGDB_COMPILED_BREAK,
+ .fn = kgdb_compiled_brk_fn
+};
+
+/**
+ * kgdb_arch_init - Perform any architecture specific initalization.
+ *
+ * This function will handle the initalization of any architecture
+ * specific callbacks.
+ */
+int kgdb_arch_init(void)
+{
+ register_undef_hook(&kgdb_brkpt_hook);
+ register_undef_hook(&kgdb_compiled_brkpt_hook);
+
+ return 0;
+}
+
+/**
+ * kgdb_arch_exit - Perform any architecture specific uninitalization.
+ *
+ * This function will handle the uninitalization of any architecture
+ * specific callbacks, for dynamic registration and unregistration.
+ */
+void kgdb_arch_exit(void)
+{
+ unregister_undef_hook(&kgdb_brkpt_hook);
+ unregister_undef_hook(&kgdb_compiled_brkpt_hook);
+}
+
+/*
+ * Register our undef instruction hooks with ARM undef core.
+ * We regsiter a hook specifically looking for the KGB break inst
+ * and we handle the normal undef case within the do_undefinstr
+ * handler.
+ */
+struct kgdb_arch arch_kgdb_ops = {
+#ifndef __ARMEB__
+ .gdb_bpt_instr = {0xfe, 0xde, 0xff, 0xe7}
+#else /* ! __ARMEB__ */
+ .gdb_bpt_instr = {0xe7, 0xff, 0xde, 0xfe}
+#endif
+};
diff --git a/arch/arm/kernel/kprobes.c b/arch/arm/kernel/kprobes.c
index 5593dd20721..5ee39e10c8d 100644
--- a/arch/arm/kernel/kprobes.c
+++ b/arch/arm/kernel/kprobes.c
@@ -274,7 +274,7 @@ int __kprobes kprobe_exceptions_notify(struct notifier_block *self,
* for kretprobe handlers which should normally be interested in r0 only
* anyway.
*/
-static void __attribute__((naked)) __kprobes kretprobe_trampoline(void)
+void __naked __kprobes kretprobe_trampoline(void)
{
__asm__ __volatile__ (
"stmdb sp!, {r0 - r11} \n\t"
diff --git a/arch/arm/kernel/setup.c b/arch/arm/kernel/setup.c
index b7b0720bc1b..38f0e7940a1 100644
--- a/arch/arm/kernel/setup.c
+++ b/arch/arm/kernel/setup.c
@@ -36,6 +36,7 @@
#include <asm/mach/arch.h>
#include <asm/mach/irq.h>
#include <asm/mach/time.h>
+#include <asm/traps.h>
#include "compat.h"
#include "atags.h"
@@ -853,6 +854,7 @@ void __init setup_arch(char **cmdline_p)
conswitchp = &dummy_con;
#endif
#endif
+ early_trap_init();
}
diff --git a/arch/arm/kernel/smp.c b/arch/arm/kernel/smp.c
index eefae1de334..5a7c09564d1 100644
--- a/arch/arm/kernel/smp.c
+++ b/arch/arm/kernel/smp.c
@@ -68,20 +68,10 @@ enum ipi_msg_type {
IPI_TIMER,
IPI_RESCHEDULE,
IPI_CALL_FUNC,
+ IPI_CALL_FUNC_SINGLE,
IPI_CPU_STOP,
};
-struct smp_call_struct {
- void (*func)(void *info);
- void *info;
- int wait;
- cpumask_t pending;
- cpumask_t unfinished;
-};
-
-static struct smp_call_struct * volatile smp_call_function_data;
-static DEFINE_SPINLOCK(smp_call_function_lock);
-
int __cpuinit __cpu_up(unsigned int cpu)
{
struct cpuinfo_arm *ci = &per_cpu(cpu_data, cpu);
@@ -366,114 +356,15 @@ static void send_ipi_message(cpumask_t callmap, enum ipi_msg_type msg)
local_irq_restore(flags);
}
-/*
- * You must not call this function with disabled interrupts, from a
- * hardware interrupt handler, nor from a bottom half handler.
- */
-static int smp_call_function_on_cpu(void (*func)(void *info), void *info,
- int retry, int wait, cpumask_t callmap)
-{
- struct smp_call_struct data;
- unsigned long timeout;
- int ret = 0;
-
- data.func = func;
- data.info = info;
- data.wait = wait;
-
- cpu_clear(smp_processor_id(), callmap);
- if (cpus_empty(callmap))
- goto out;
-
- data.pending = callmap;
- if (wait)
- data.unfinished = callmap;
-
- /*
- * try to get the mutex on smp_call_function_data
- */
- spin_lock(&smp_call_function_lock);
- smp_call_function_data = &data;
-
- send_ipi_message(callmap, IPI_CALL_FUNC);
-
- timeout = jiffies + HZ;
- while (!cpus_empty(data.pending) && time_before(jiffies, timeout))
- barrier();
-
- /*
- * did we time out?
- */
- if (!cpus_empty(data.pending)) {
- /*
- * this may be causing our panic - report it
- */
- printk(KERN_CRIT
- "CPU%u: smp_call_function timeout for %p(%p)\n"
- " callmap %lx pending %lx, %swait\n",
- smp_processor_id(), func, info, *cpus_addr(callmap),
- *cpus_addr(data.pending), wait ? "" : "no ");
-
- /*
- * TRACE
- */
- timeout = jiffies + (5 * HZ);
- while (!cpus_empty(data.pending) && time_before(jiffies, timeout))
- barrier();
-
- if (cpus_empty(data.pending))
- printk(KERN_CRIT " RESOLVED\n");
- else
- printk(KERN_CRIT " STILL STUCK\n");
- }
-
- /*
- * whatever happened, we're done with the data, so release it
- */
- smp_call_function_data = NULL;
- spin_unlock(&smp_call_function_lock);
-
- if (!cpus_empty(data.pending)) {
- ret = -ETIMEDOUT;
- goto out;
- }
-
- if (wait)
- while (!cpus_empty(data.unfinished))
- barrier();
- out:
-
- return 0;
-}
-
-int smp_call_function(void (*func)(void *info), void *info, int retry,
- int wait)
+void arch_send_call_function_ipi(cpumask_t mask)
{
- return smp_call_function_on_cpu(func, info, retry, wait,
- cpu_online_map);
+ send_ipi_message(mask, IPI_CALL_FUNC);
}
-EXPORT_SYMBOL_GPL(smp_call_function);
-int smp_call_function_single(int cpu, void (*func)(void *info), void *info,
- int retry, int wait)
+void arch_send_call_function_single_ipi(int cpu)
{
- /* prevent preemption and reschedule on another processor */
- int current_cpu = get_cpu();
- int ret = 0;
-
- if (cpu == current_cpu) {
- local_irq_disable();
- func(info);
- local_irq_enable();
- } else
- ret = smp_call_function_on_cpu(func, info, retry, wait,
- cpumask_of_cpu(cpu));
-
- put_cpu();
-
- return ret;
+ send_ipi_message(cpumask_of_cpu(cpu), IPI_CALL_FUNC_SINGLE);
}
-EXPORT_SYMBOL_GPL(smp_call_function_single);
void show_ipi_list(struct seq_file *p)
{
@@ -521,27 +412,6 @@ asmlinkage void __exception do_local_timer(struct pt_regs *regs)
}
#endif
-/*
- * ipi_call_function - handle IPI from smp_call_function()
- *
- * Note that we copy data out of the cross-call structure and then
- * let the caller know that we're here and have done with their data
- */
-static void ipi_call_function(unsigned int cpu)
-{
- struct smp_call_struct *data = smp_call_function_data;
- void (*func)(void *info) = data->func;
- void *info = data->info;
- int wait = data->wait;
-
- cpu_clear(cpu, data->pending);
-
- func(info);
-
- if (wait)
- cpu_clear(cpu, data->unfinished);
-}
-
static DEFINE_SPINLOCK(stop_lock);
/*
@@ -611,7 +481,11 @@ asmlinkage void __exception do_IPI(struct pt_regs *regs)
break;
case IPI_CALL_FUNC:
- ipi_call_function(cpu);
+ generic_smp_call_function_interrupt();
+ break;
+
+ case IPI_CALL_FUNC_SINGLE:
+ generic_smp_call_function_single_interrupt();
break;
case IPI_CPU_STOP:
@@ -662,14 +536,13 @@ int setup_profiling_timer(unsigned int multiplier)
}
static int
-on_each_cpu_mask(void (*func)(void *), void *info, int retry, int wait,
- cpumask_t mask)
+on_each_cpu_mask(void (*func)(void *), void *info, int wait, cpumask_t mask)
{
int ret = 0;
preempt_disable();
- ret = smp_call_function_on_cpu(func, info, retry, wait, mask);
+ ret = smp_call_function_mask(mask, func, info, wait);
if (cpu_isset(smp_processor_id(), mask))
func(info);
@@ -731,14 +604,14 @@ static inline void ipi_flush_tlb_kernel_range(void *arg)
void flush_tlb_all(void)
{
- on_each_cpu(ipi_flush_tlb_all, NULL, 1, 1);
+ on_each_cpu(ipi_flush_tlb_all, NULL, 1);
}
void flush_tlb_mm(struct mm_struct *mm)
{
cpumask_t mask = mm->cpu_vm_mask;
- on_each_cpu_mask(ipi_flush_tlb_mm, mm, 1, 1, mask);
+ on_each_cpu_mask(ipi_flush_tlb_mm, mm, 1, mask);
}
void flush_tlb_page(struct vm_area_struct *vma, unsigned long uaddr)
@@ -749,7 +622,7 @@ void flush_tlb_page(struct vm_area_struct *vma, unsigned long uaddr)
ta.ta_vma = vma;
ta.ta_start = uaddr;
- on_each_cpu_mask(ipi_flush_tlb_page, &ta, 1, 1, mask);
+ on_each_cpu_mask(ipi_flush_tlb_page, &ta, 1, mask);
}
void flush_tlb_kernel_page(unsigned long kaddr)
@@ -758,7 +631,7 @@ void flush_tlb_kernel_page(unsigned long kaddr)
ta.ta_start = kaddr;
- on_each_cpu(ipi_flush_tlb_kernel_page, &ta, 1, 1);
+ on_each_cpu(ipi_flush_tlb_kernel_page, &ta, 1);
}
void flush_tlb_range(struct vm_area_struct *vma,
@@ -771,7 +644,7 @@ void flush_tlb_range(struct vm_area_struct *vma,
ta.ta_start = start;
ta.ta_end = end;
- on_each_cpu_mask(ipi_flush_tlb_range, &ta, 1, 1, mask);
+ on_each_cpu_mask(ipi_flush_tlb_range, &ta, 1, mask);
}
void flush_tlb_kernel_range(unsigned long start, unsigned long end)
@@ -781,5 +654,5 @@ void flush_tlb_kernel_range(unsigned long start, unsigned long end)
ta.ta_start = start;
ta.ta_end = end;
- on_each_cpu(ipi_flush_tlb_kernel_range, &ta, 1, 1);
+ on_each_cpu(ipi_flush_tlb_kernel_range, &ta, 1);
}
diff --git a/arch/arm/kernel/stacktrace.c b/arch/arm/kernel/stacktrace.c
index 90e0c35ae60..fc650f64df4 100644
--- a/arch/arm/kernel/stacktrace.c
+++ b/arch/arm/kernel/stacktrace.c
@@ -92,4 +92,5 @@ void save_stack_trace(struct stack_trace *trace)
{
save_stack_trace_tsk(current, trace);
}
+EXPORT_SYMBOL_GPL(save_stack_trace);
#endif
diff --git a/arch/arm/kernel/time.c b/arch/arm/kernel/time.c
index cc5145b28e7..368d171754c 100644
--- a/arch/arm/kernel/time.c
+++ b/arch/arm/kernel/time.c
@@ -130,7 +130,9 @@ static const struct leds_evt_name evt_names[] = {
{ "red", led_red_on, led_red_off },
};
-static ssize_t leds_store(struct sys_device *dev, const char *buf, size_t size)
+static ssize_t leds_store(struct sys_device *dev,
+ struct sysdev_attribute *attr,
+ const char *buf, size_t size)
{
int ret = -EINVAL, len = strcspn(buf, " ");
diff --git a/arch/arm/kernel/traps.c b/arch/arm/kernel/traps.c
index 5595fdd75e8..7277aef8309 100644
--- a/arch/arm/kernel/traps.c
+++ b/arch/arm/kernel/traps.c
@@ -708,6 +708,11 @@ EXPORT_SYMBOL(abort);
void __init trap_init(void)
{
+ return;
+}
+
+void __init early_trap_init(void)
+{
unsigned long vectors = CONFIG_VECTORS_BASE;
extern char __stubs_start[], __stubs_end[];
extern char __vectors_start[], __vectors_end[];
diff --git a/arch/arm/mach-integrator/impd1.c b/arch/arm/mach-integrator/impd1.c
index 62e653a3ea1..5a1588cf824 100644
--- a/arch/arm/mach-integrator/impd1.c
+++ b/arch/arm/mach-integrator/impd1.c
@@ -393,9 +393,7 @@ static int impd1_probe(struct lm_device *dev)
if (!d)
continue;
- snprintf(d->dev.bus_id, sizeof(d->dev.bus_id),
- "lm%x:%5.5lx", dev->id, idev->offset >> 12);
-
+ dev_set_name(&d->dev, "lm%x:%5.5lx", dev->id, idev->offset >> 12);
d->dev.parent = &dev->dev;
d->res.start = dev->resource.start + idev->offset;
d->res.end = d->res.start + SZ_4K - 1;
@@ -407,8 +405,7 @@ static int impd1_probe(struct lm_device *dev)
ret = amba_device_register(d, &dev->resource);
if (ret) {
- printk("unable to register device %s: %d\n",
- d->dev.bus_id, ret);
+ dev_err(&d->dev, "unable to register device: %d\n");
kfree(d);
}
}
diff --git a/arch/arm/mach-integrator/lm.c b/arch/arm/mach-integrator/lm.c
index 622cdc4212d..f939c509140 100644
--- a/arch/arm/mach-integrator/lm.c
+++ b/arch/arm/mach-integrator/lm.c
@@ -81,8 +81,10 @@ int lm_device_register(struct lm_device *dev)
dev->dev.release = lm_device_release;
dev->dev.bus = &lm_bustype;
- snprintf(dev->dev.bus_id, sizeof(dev->dev.bus_id), "lm%d", dev->id);
- dev->resource.name = dev->dev.bus_id;
+ ret = dev_set_name(&dev->dev, "lm%d", dev->id);
+ if (ret)
+ return ret;
+ dev->resource.name = dev_name(&dev->dev);
ret = request_resource(&iomem_resource, &dev->resource);
if (ret == 0) {
diff --git a/arch/arm/oprofile/op_model_mpcore.c b/arch/arm/oprofile/op_model_mpcore.c
index 74fae604565..4458705021e 100644
--- a/arch/arm/oprofile/op_model_mpcore.c
+++ b/arch/arm/oprofile/op_model_mpcore.c
@@ -201,7 +201,7 @@ static int em_call_function(int (*fn)(void))
data.ret = 0;
preempt_disable();
- smp_call_function(em_func, &data, 1, 1);
+ smp_call_function(em_func, &data, 1);
em_func(&data);
preempt_enable();
diff --git a/arch/arm/plat-omap/mailbox.c b/arch/arm/plat-omap/mailbox.c
index 6f33f58bca4..ff1413eae0b 100644
--- a/arch/arm/plat-omap/mailbox.c
+++ b/arch/arm/plat-omap/mailbox.c
@@ -334,7 +334,7 @@ static int omap_mbox_init(struct omap_mbox *mbox)
}
mbox->dev.class = &omap_mbox_class;
- strlcpy(mbox->dev.bus_id, mbox->name, KOBJ_NAME_LEN);
+ dev_set_name(&mbox->dev, "%s", mbox->name);
dev_set_drvdata(&mbox->dev, mbox);
ret = device_register(&mbox->dev);
diff --git a/arch/arm/vfp/vfpmodule.c b/arch/arm/vfp/vfpmodule.c
index 32455c633f1..c0d2c9bb952 100644
--- a/arch/arm/vfp/vfpmodule.c
+++ b/arch/arm/vfp/vfpmodule.c
@@ -352,7 +352,7 @@ static int __init vfp_init(void)
else if (vfpsid & FPSID_NODOUBLE) {
printk("no double precision support\n");
} else {
- smp_call_function(vfp_enable, NULL, 1, 1);
+ smp_call_function(vfp_enable, NULL, 1);
VFP_arch = (vfpsid & FPSID_ARCH_MASK) >> FPSID_ARCH_BIT; /* Extract the architecture version */
printk("implementor %02x architecture %d part %02x variant %x rev %x\n",
generated by cgit v1.2.3 (git 2.25.1) at 2024-07-13 18:53:43 +0000