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-rw-r--r--arch/arm/kernel/Makefile1
-rw-r--r--arch/arm/kernel/armksyms.c20
-rw-r--r--arch/arm/kernel/crunch.c2
-rw-r--r--arch/arm/kernel/debug.S20
-rw-r--r--arch/arm/kernel/dma-isa.c4
-rw-r--r--arch/arm/kernel/early_printk.c57
-rw-r--r--arch/arm/kernel/elf.c9
-rw-r--r--arch/arm/kernel/entry-armv.S4
-rw-r--r--arch/arm/kernel/irq.c12
-rw-r--r--arch/arm/kernel/process.c15
-rw-r--r--arch/arm/kernel/smp_twd.c1
-rw-r--r--arch/arm/kernel/vmlinux.lds.S13
-rw-r--r--arch/arm/kernel/xscale-cp0.c2
13 files changed, 105 insertions, 55 deletions
diff --git a/arch/arm/kernel/Makefile b/arch/arm/kernel/Makefile
index e7ccf7e697c..dd00f747e2a 100644
--- a/arch/arm/kernel/Makefile
+++ b/arch/arm/kernel/Makefile
@@ -54,5 +54,6 @@ endif
head-y := head$(MMUEXT).o
obj-$(CONFIG_DEBUG_LL) += debug.o
+obj-$(CONFIG_EARLY_PRINTK) += early_printk.o
extra-y := $(head-y) init_task.o vmlinux.lds
diff --git a/arch/arm/kernel/armksyms.c b/arch/arm/kernel/armksyms.c
index 0e627705f74..8214bfebfac 100644
--- a/arch/arm/kernel/armksyms.c
+++ b/arch/arm/kernel/armksyms.c
@@ -48,27 +48,7 @@ extern void __aeabi_uidivmod(void);
extern void __aeabi_ulcmp(void);
extern void fpundefinstr(void);
-extern void fp_enter(void);
-/*
- * This has a special calling convention; it doesn't
- * modify any of the usual registers, except for LR.
- */
-#define EXPORT_CRC_ALIAS(sym) __CRC_SYMBOL(sym, "")
-
-#define EXPORT_SYMBOL_ALIAS(sym,orig) \
- EXPORT_CRC_ALIAS(sym) \
- static const struct kernel_symbol __ksymtab_##sym \
- __used __attribute__((section("__ksymtab"))) = \
- { (unsigned long)&orig, #sym };
-
-/*
- * floating point math emulator support.
- * These symbols will never change their calling convention...
- */
-EXPORT_SYMBOL_ALIAS(kern_fp_enter,fp_enter);
-EXPORT_SYMBOL_ALIAS(fp_printk,printk);
-EXPORT_SYMBOL_ALIAS(fp_send_sig,send_sig);
EXPORT_SYMBOL(__backtrace);
diff --git a/arch/arm/kernel/crunch.c b/arch/arm/kernel/crunch.c
index 769abe15cf9..25ef223ba7f 100644
--- a/arch/arm/kernel/crunch.c
+++ b/arch/arm/kernel/crunch.c
@@ -51,7 +51,7 @@ static int crunch_do(struct notifier_block *self, unsigned long cmd, void *t)
* initialised state information on the first fault.
*/
- case THREAD_NOTIFY_RELEASE:
+ case THREAD_NOTIFY_EXIT:
crunch_task_release(thread);
break;
diff --git a/arch/arm/kernel/debug.S b/arch/arm/kernel/debug.S
index b121b6053cc..5c91addcaeb 100644
--- a/arch/arm/kernel/debug.S
+++ b/arch/arm/kernel/debug.S
@@ -49,6 +49,26 @@
1002:
.endm
+#elif defined(CONFIG_CPU_V7)
+
+ .macro addruart, rx
+ .endm
+
+ .macro senduart, rd, rx
+ mcr p14, 0, \rd, c0, c5, 0
+ .endm
+
+ .macro busyuart, rd, rx
+busy: mrc p14, 0, pc, c0, c1, 0
+ bcs busy
+ .endm
+
+ .macro waituart, rd, rx
+wait: mrc p14, 0, pc, c0, c1, 0
+ bcs wait
+
+ .endm
+
#elif defined(CONFIG_CPU_XSCALE)
.macro addruart, rx
diff --git a/arch/arm/kernel/dma-isa.c b/arch/arm/kernel/dma-isa.c
index 0e88e46fc73..360bb6d701f 100644
--- a/arch/arm/kernel/dma-isa.c
+++ b/arch/arm/kernel/dma-isa.c
@@ -207,8 +207,6 @@ void __init isa_init_dma(void)
outb(0x32, 0x4d6);
outb(0x33, 0x4d6);
- request_dma(DMA_ISA_CASCADE, "cascade");
-
for (i = 0; i < ARRAY_SIZE(dma_resources); i++)
request_resource(&ioport_resource, dma_resources + i);
@@ -218,5 +216,7 @@ void __init isa_init_dma(void)
printk(KERN_ERR "ISADMA%u: unable to register: %d\n",
chan, ret);
}
+
+ request_dma(DMA_ISA_CASCADE, "cascade");
}
}
diff --git a/arch/arm/kernel/early_printk.c b/arch/arm/kernel/early_printk.c
new file mode 100644
index 00000000000..85aa2b29269
--- /dev/null
+++ b/arch/arm/kernel/early_printk.c
@@ -0,0 +1,57 @@
+/*
+ * linux/arch/arm/kernel/early_printk.c
+ *
+ * Copyright (C) 2009 Sascha Hauer <s.hauer@pengutronix.de>
+ *
+ * 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.
+ */
+
+#include <linux/kernel.h>
+#include <linux/console.h>
+#include <linux/init.h>
+
+extern void printch(int);
+
+static void early_write(const char *s, unsigned n)
+{
+ while (n-- > 0) {
+ if (*s == '\n')
+ printch('\r');
+ printch(*s);
+ s++;
+ }
+}
+
+static void early_console_write(struct console *con, const char *s, unsigned n)
+{
+ early_write(s, n);
+}
+
+static struct console early_console = {
+ .name = "earlycon",
+ .write = early_console_write,
+ .flags = CON_PRINTBUFFER | CON_BOOT,
+ .index = -1,
+};
+
+asmlinkage void early_printk(const char *fmt, ...)
+{
+ char buf[512];
+ int n;
+ va_list ap;
+
+ va_start(ap, fmt);
+ n = vscnprintf(buf, sizeof(buf), fmt, ap);
+ early_write(buf, n);
+ va_end(ap);
+}
+
+static int __init setup_early_printk(char *buf)
+{
+ register_console(&early_console);
+ return 0;
+}
+
+early_param("earlyprintk", setup_early_printk);
diff --git a/arch/arm/kernel/elf.c b/arch/arm/kernel/elf.c
index 950391f194c..d4a0da1e48f 100644
--- a/arch/arm/kernel/elf.c
+++ b/arch/arm/kernel/elf.c
@@ -78,15 +78,6 @@ int arm_elf_read_implies_exec(const struct elf32_hdr *x, int executable_stack)
return 1;
if (cpu_architecture() < CPU_ARCH_ARMv6)
return 1;
-#if !defined(CONFIG_AEABI) || defined(CONFIG_OABI_COMPAT)
- /*
- * If we have support for OABI programs, we can never allow NX
- * support - our signal syscall restart mechanism relies upon
- * being able to execute code placed on the user stack.
- */
- return 1;
-#else
return 0;
-#endif
}
EXPORT_SYMBOL(arm_elf_read_implies_exec);
diff --git a/arch/arm/kernel/entry-armv.S b/arch/arm/kernel/entry-armv.S
index d2903e3bc86..6c5cf369183 100644
--- a/arch/arm/kernel/entry-armv.S
+++ b/arch/arm/kernel/entry-armv.S
@@ -957,9 +957,7 @@ kuser_cmpxchg_fixup:
#else
-#ifdef CONFIG_SMP
- mcr p15, 0, r0, c7, c10, 5 @ dmb
-#endif
+ smp_dmb
1: ldrex r3, [r2]
subs r3, r3, r0
strexeq r3, r1, [r2]
diff --git a/arch/arm/kernel/irq.c b/arch/arm/kernel/irq.c
index c9a8619f385..b7cb45bb91e 100644
--- a/arch/arm/kernel/irq.c
+++ b/arch/arm/kernel/irq.c
@@ -69,7 +69,7 @@ int show_interrupts(struct seq_file *p, void *v)
}
if (i < NR_IRQS) {
- spin_lock_irqsave(&irq_desc[i].lock, flags);
+ raw_spin_lock_irqsave(&irq_desc[i].lock, flags);
action = irq_desc[i].action;
if (!action)
goto unlock;
@@ -84,7 +84,7 @@ int show_interrupts(struct seq_file *p, void *v)
seq_putc(p, '\n');
unlock:
- spin_unlock_irqrestore(&irq_desc[i].lock, flags);
+ raw_spin_unlock_irqrestore(&irq_desc[i].lock, flags);
} else if (i == NR_IRQS) {
#ifdef CONFIG_FIQ
show_fiq_list(p, v);
@@ -139,7 +139,7 @@ void set_irq_flags(unsigned int irq, unsigned int iflags)
}
desc = irq_desc + irq;
- spin_lock_irqsave(&desc->lock, flags);
+ raw_spin_lock_irqsave(&desc->lock, flags);
desc->status |= IRQ_NOREQUEST | IRQ_NOPROBE | IRQ_NOAUTOEN;
if (iflags & IRQF_VALID)
desc->status &= ~IRQ_NOREQUEST;
@@ -147,7 +147,7 @@ void set_irq_flags(unsigned int irq, unsigned int iflags)
desc->status &= ~IRQ_NOPROBE;
if (!(iflags & IRQF_NOAUTOEN))
desc->status &= ~IRQ_NOAUTOEN;
- spin_unlock_irqrestore(&desc->lock, flags);
+ raw_spin_unlock_irqrestore(&desc->lock, flags);
}
void __init init_IRQ(void)
@@ -166,9 +166,9 @@ static void route_irq(struct irq_desc *desc, unsigned int irq, unsigned int cpu)
{
pr_debug("IRQ%u: moving from cpu%u to cpu%u\n", irq, desc->node, cpu);
- spin_lock_irq(&desc->lock);
+ raw_spin_lock_irq(&desc->lock);
desc->chip->set_affinity(irq, cpumask_of(cpu));
- spin_unlock_irq(&desc->lock);
+ raw_spin_unlock_irq(&desc->lock);
}
/*
diff --git a/arch/arm/kernel/process.c b/arch/arm/kernel/process.c
index 0d96d0171c0..ba2adefa53f 100644
--- a/arch/arm/kernel/process.c
+++ b/arch/arm/kernel/process.c
@@ -212,7 +212,8 @@ void __show_regs(struct pt_regs *regs)
char buf[64];
printk("CPU: %d %s (%s %.*s)\n",
- smp_processor_id(), print_tainted(), init_utsname()->release,
+ raw_smp_processor_id(), print_tainted(),
+ init_utsname()->release,
(int)strcspn(init_utsname()->version, " "),
init_utsname()->version);
print_symbol("PC is at %s\n", instruction_pointer(regs));
@@ -274,17 +275,18 @@ void show_regs(struct pt_regs * regs)
__backtrace();
}
+ATOMIC_NOTIFIER_HEAD(thread_notify_head);
+
+EXPORT_SYMBOL_GPL(thread_notify_head);
+
/*
* Free current thread data structures etc..
*/
void exit_thread(void)
{
+ thread_notify(THREAD_NOTIFY_EXIT, current_thread_info());
}
-ATOMIC_NOTIFIER_HEAD(thread_notify_head);
-
-EXPORT_SYMBOL_GPL(thread_notify_head);
-
void flush_thread(void)
{
struct thread_info *thread = current_thread_info();
@@ -299,9 +301,6 @@ void flush_thread(void)
void release_thread(struct task_struct *dead_task)
{
- struct thread_info *thread = task_thread_info(dead_task);
-
- thread_notify(THREAD_NOTIFY_RELEASE, thread);
}
asmlinkage void ret_from_fork(void) __asm__("ret_from_fork");
diff --git a/arch/arm/kernel/smp_twd.c b/arch/arm/kernel/smp_twd.c
index a73a34dccf2..ea02a7b1c24 100644
--- a/arch/arm/kernel/smp_twd.c
+++ b/arch/arm/kernel/smp_twd.c
@@ -160,6 +160,7 @@ void __cpuinit twd_timer_setup(struct clock_event_device *clk)
/* Make sure our local interrupt controller has this enabled */
local_irq_save(flags);
+ irq_to_desc(clk->irq)->status |= IRQ_NOPROBE;
get_irq_chip(clk->irq)->unmask(clk->irq);
local_irq_restore(flags);
diff --git a/arch/arm/kernel/vmlinux.lds.S b/arch/arm/kernel/vmlinux.lds.S
index 71151bd87a3..4957e13ef55 100644
--- a/arch/arm/kernel/vmlinux.lds.S
+++ b/arch/arm/kernel/vmlinux.lds.S
@@ -65,11 +65,11 @@ SECTIONS
__init_end = .;
#endif
- /DISCARD/ : { /* Exit code and data */
- EXIT_TEXT
- EXIT_DATA
- *(.exitcall.exit)
- *(.discard)
+ /*
+ * unwind exit sections must be discarded before the rest of the
+ * unwind sections get included.
+ */
+ /DISCARD/ : {
*(.ARM.exidx.exit.text)
*(.ARM.extab.exit.text)
#ifndef CONFIG_HOTPLUG_CPU
@@ -238,6 +238,9 @@ SECTIONS
STABS_DEBUG
.comment 0 : { *(.comment) }
+
+ /* Default discards */
+ DISCARDS
}
/*
diff --git a/arch/arm/kernel/xscale-cp0.c b/arch/arm/kernel/xscale-cp0.c
index 17127db906f..1796157e3dd 100644
--- a/arch/arm/kernel/xscale-cp0.c
+++ b/arch/arm/kernel/xscale-cp0.c
@@ -70,7 +70,7 @@ static int iwmmxt_do(struct notifier_block *self, unsigned long cmd, void *t)
* initialised state information on the first fault.
*/
- case THREAD_NOTIFY_RELEASE:
+ case THREAD_NOTIFY_EXIT:
iwmmxt_task_release(thread);
break;
generated by cgit v1.2.3-18-g5258 (git 2.32.0) at 2024-12-17 03:49:25 +0000